WO2015154919A1

WO2015154919A1 - Printing unit with at least one printing head and at least one cleaning device, and method for cleaning at least one nozzle surface of at least one printing head

Info

Publication number: WO2015154919A1
Application number: PCT/EP2015/054511
Authority: WO
Inventors: Wolfgang Reder
Original assignee: Koenig & Bauer Aktiengesellschaft
Priority date: 2014-04-11
Filing date: 2015-03-04
Publication date: 2015-10-15
Also published as: DE102014206994B4; DE102014206994A1

Abstract

The invention relates to printing unit which has a printing head and a cleaning device with a cleaning module. The printing head and the cleaning module are arranged in a movable manner relative to each other in and/or against a cleaning direction, and the cleaning module has a contact element which can be brought into contact with a nozzle surface of the printing head by means of an adjusting drive. The cleaning module has a first cleaning agent dispensing device, which is oriented and/or can be oriented towards the printing head and towards the contact element, and/or the cleaning module has a gas outlet nozzle, which is oriented and/or can be oriented towards the printing head and towards the contact element. The invention also relates to a method for cleaning a nozzle surface of a printing head of a printing unit

Description

description

Printing unit with at least one print head and at least one cleaning device and a method for cleaning at least one nozzle surface of at least one

printhead

The invention relates to a printing unit with at least one print head and at least one cleaning module according to the preamble of claim 1 and a method for cleaning at least one nozzle surface of at least one print head.

Various printing methods are known which can be used in printing presses. One such printing method is ink jet printing or ink jet printing. In this case, individual coating agent drops are ejected from nozzles of printheads and transferred to a substrate that on the

Substrate yields a printed image. By individual control of a plurality of nozzles so different print images can be created. There is no fixed printing form and thus it is possible to design each individual print product individually. As a result, personalized printed products can be produced and / or due to the

Saving the printing forms small runs of printed products can be produced at low cost.

An exact match of a print image on the front and back of a printed substrate printed on both sides is called register (DIN 16500-2). in the

Multi-color printing is referred to as the Passer (DIN 16500-2), when individual print images of different colors are combined exactly to a picture. Also in the context of inkjet printing, appropriate measures must be taken to maintain register and / or register.

From DE 10 201 1 076 899 A1 a printing press is known, wherein the Printing machine having a first printing unit having a central cylinder and at least one inkjet printhead.

Inks and printing inks are preferably solutions or dispersions of at least one colorant in at least one solvent. Suitable solvents include, for example, water and / or organic solvents. Inks preferably have no binder or relatively little binder, while printing inks preferably contain a relatively large amount of binder and more preferably further auxiliaries. Colorants may be pigments and / or dyes, pigments being insoluble in the application medium, while dyes are soluble in the application medium. Nevertheless, in the

The following also colorless paints meant when talking about coating compositions and / or inks and / or printing inks.

In printing units, it comes again and again to contamination, for example, by dried on coating agent such as ink or ink or by parts of a printing material such as paper fibers or by dust or the like or by mixtures of the substances mentioned. As a result, for example nozzles of printing heads can be narrowed or blocked, which can lead to incorrect application of coating agent. Both within nozzles and on outer nozzle surfaces of printheads such contamination can have negative consequences. There are therefore different cleaning devices known.

By WO 2013/134737 A1 is a cleaning device with engageable

Contact elements known.

A printing unit is known from EP 2 233 294 B1 which has at least one print head and at least one cleaning device and wherein a cleaning module has a contact element which can be brought into contact with a nozzle surface of the print head by means of a positioning drive and wherein the contact element is at a first location a lever body is arranged on this lever body and wherein the lever body is mounted at a second location of this lever body on a support and wherein the Anstellantrieb is in contact with this lever body at a third location of the lever body.

By the US 2010/0079539 A1 a printing unit is known, the at least one

The printhead and at least one cleaning module and wherein the at least one printhead and the at least one cleaning module are arranged to be movable relative to one another and wherein the at least one cleaning module has at least one first discharge device for cleaning agent aligned and / or alignable with the at least one printhead.

By the US 201 1/0074869 A1 a cleaning device is known in which

Applied detergent and at the same time sucked off again.

US 2012/0186606 A1 and JP 2003 182 088 A and US 2006/0221 122 A1 each disclose a printhead and a cleaning device with a cleaning module, the printhead and the cleaning module being in and opposite to one another

Cleaning direction are arranged movable relative to each other and wherein the

Cleaning module has a alignable to the printhead first dispensing means for detergent and alignable on the printhead gas outlet nozzle and a contact element.

Further cleaning devices for printing heads are shown in WO 2012/089 182 A1 and DE 10 201 1 056 647 A1.

The invention has for its object to provide a printing unit with at least one printhead and at least one cleaning device and a method for cleaning at least one nozzle surface of at least one printhead. The object is achieved by the features of claim 1 and the features of claim 38.

A printing press has at least one printing unit. The printing unit preferably has at least one print head and at least one cleaning device with at least one cleaning module, wherein the at least one print head and the at least one cleaning module are arranged to be movable relative to one another in and / or opposite to a cleaning direction, and wherein the at least one cleaning module has at least one contact element, that is brought into contact with at least one Anstellantriebs with at least one nozzle surface of the at least one printhead, characterized in that the at least one cleaning module has at least one on the at least one printhead and on the at least one contact element aligned and / or alignable first dispensing means for detergent and or that the at least one cleaning module has at least one gas outlet nozzle aligned and / or orientable on the at least one print head and on the at least one contact element. One particular advantage is that the contact element can be cleaned and / or dried by means of the dispensing device and / or by means of the gas outlet nozzle. This allows an automated and space-saving design. For example, then this is at least one

Contact element arranged in a target area of the at least one dispensing device and / or in a target area of the at least one gas outlet nozzle. The cleaning direction is preferably orthogonal to that provided for a printing substrate

Direction of transport oriented and / or the cleaning direction is parallel to the

Oriented nozzle surface

An advantage of a printing unit which has at least one print head and at least one cleaning device with at least one cleaning module, wherein preferably at least one print head and the at least one cleaning module in and / or are arranged relative to each other movable relative to the cleaning direction and preferably wherein the at least one cleaning module at least one on the at least one print head, in particular on at least one nozzle surface of the at least one

Printhead aligned and / or alignable first dispenser for

Having cleaning agent and / or preferably wherein the at least one

Cleaning module has at least one on the at least one print head, in particular on the at least one nozzle surface of the at least one print head aligned and / or alignable gas outlet nozzle, has at least the advantage that a particularly gentle cleaning can be made. In addition, the possibility is created by separate application and removal of the cleaning agent to adjust a contact time of the cleaning agent to the given circumstances.

In particular, the at least one cleaning module is preferably arranged to be movable, in particular in the cleaning direction.

The at least one first dispensing device and an outlet opening of the at least one gas outlet nozzle are preferably arranged at a distance from one another, at least in the cleaning direction. This makes it possible, for example, to assign these two a common Einwirkbereich. If necessary, these can then act on a same part of the at least one nozzle surface. More preferably, the at least one contact element is arranged with respect to the cleaning direction between the at least one first dispensing device and the at least one outlet opening of the at least one gas outlet nozzle. This makes it possible, in particular, to arrange this at least one contact body in the common action region and to act on the at least one contact body both by means of the at least one dispensing device and by means of the at least one gas outlet nozzle. In this way, the at least one dispensing device and the at least one

Gas outlet for cleaning the at least one contact body can be used. The printing unit is preferably additionally or alternatively characterized in that the at least one contact element with respect to the cleaning direction between the at least a first dispensing device and an outlet opening of the at least one gas outlet nozzle is arranged

The printing unit is preferably additionally or alternatively characterized in that the at least one cleaning module has at least one carrier and together with the latter by means of at least one cleaning drive in and / or against one

Cleaning direction is arranged relative to the at least one print head movable. In particular, the at least one carrier is then preferably arranged to be movable in and / or counter to the cleaning direction by means of the at least one cleaning drive.

The printing unit is preferably additionally or alternatively characterized in that the at least one contact element is arranged at a first location of at least one lever body on this at least one lever body and that the at least one lever body is mounted at a second location of this at least one lever body on at least one carrier and that the at least one Anstellantrieb is at least temporarily in a third position of the at least one lever body with this at least one lever body in contact and / or can be brought. The printing unit is preferably additionally characterized in that along the at least one lever body, the third position between the first location and the second location is arranged. The printing unit is preferably additionally or alternatively characterized in that the at least one lever body and / or the at least one positioning drive is arranged with respect to the cleaning direction between the at least one first dispensing opening of the at least one first dispensing device and the at least one outlet opening of the at least one gas outlet nozzle.

An advantage of the printing unit, the at least one printhead and at least one

Cleaning device having at least one movable cleaning module, wherein the at least one cleaning module preferably at least one contact element has, by means of at least one Anstellantriebs, in particular from at least one spaced first relative position, with at least one nozzle surface of the at least one print head in contact, for example, in particular in a

contacting second relative position, and preferably wherein the at least one

Contact element at a first location of at least one lever body is arranged on this at least one lever body and the at least one lever body at a second location of this at least one lever body is mounted on at least one carrier and the at least one Anstellantrieb at least temporarily at a third location of the at least one lever body This at least one lever body is in contact and / or can be brought and wherein the third location between the first location and the second location is preferably arranged along the at least one lever body has at least the advantage that the cleaning module can be made particularly compact. In particular, in the context of printheads having, for example, because of their orientation to a central cylinder overlapping target areas, a compact design is particularly advantageous. Another advantage is that by this arrangement, the Anstellantrieb compared with the

Anstellweg the contact element requires only a relatively small stroke and therefore can be made very compact even in a Anstellrichtung.

The adjustment direction is preferably determined by the fact that the at least one

Contact element by means of the at least one Anstellantriebs in and / or against the Anstellrichtung on the at least one nozzle surface and / or from the at least one nozzle surface is movable away. Preferably, the at least one nozzle surface is a surface of the at least one print head having a plurality of nozzles, in particular nozzle openings, of nozzles of the at least one print head. Preferably, the at least one printhead is at least one inkjet printhead. The at least one carrier can also consist of several components which are arranged rigidly to one another. Nevertheless, a corresponding entirety of components should be considered as the at least one carrier. In particular, the third location between the first location and the second location is preferably arranged with respect to a direction pointing from the first location to the second location. Preferably, the at least one lever body is elastically formed, that is to say in particular reversibly deformable and having its own restoring force. Under elasticity is to be understood in particular the property of a body or material, to change its shape under the action of force and to return to the original form in the absence of the applied force. This can also malfunction of a Anstellantriebs and / or changed Anstellwegen

Damage, for example, of the contact element and / or the print head can be avoided, because the lever body permits evasive movements of the at least one contact element. The Anstellantrieb can thereby be particularly favorable than, for example, acting in one direction pneumatic actuator. Preferably, the at least one Anstellantrieb limits the at least one lever body only against the Anstellrichtung in the freedom of movement, while the at least one lever body is movable in at least one direction relative to each part of the Anstellantriebs. For example, the at least one Anstellantrieb and the at least one lever body at least temporarily spaced from each other and / or can be arranged.

A dimension of the at least one lever body in the adjusting direction is preferably less than any dimension of the at least one lever body in each of the

Setting direction orthogonal direction. This also allows a compact structure and favors its elastic properties. More preferably, the dimension of the at least one lever body in the setting direction is less than one-tenth of each dimension of the at least one lever body in each direction orthogonal to the Anstellrichtung. Preferably, therefore, the at least one lever body is designed as a restoring element which, at least when the actuating drive is activated, exerts a force acting counter to the actuating direction on the at least one actuating drive is arranged. The printing unit is preferably additionally or alternatively characterized in that the at least one lever body with respect to the Anstellrichtung between the at least one print head and the at least one Anstellantrieb is arranged.

Preferably, the at least one contact element is designed as at least one wiper, for example as at least one wiper blade. The wiper blade is, for example, as a profile of at least one elastomeric material, preferably as at least one

Rubber profile formed.

The at least one cleaning module preferably has at least one first dispensing device, which is aligned and / or orientable, in particular, with its dispensing opening on the at least one print head and / or on the at least one contact element

Cleaner on. The at least one cleaning module preferably has at least one aligned and / or alignable, in particular with its discharge opening, on the at least one print head and / or on the at least one contact element

Gas outlet nozzle on.

The printing unit is preferably additionally or alternatively characterized in that a plurality of print heads are arranged one behind the other in and / or with respect to the cleaning direction. Preferably, the at least one cleaning module with the at least one carrier by means of at least one cleaning drive in and / or against a cleaning direction relative to the at least one printhead and preferably arranged along several, for example at least three and preferably at least seven printheads movable. As a result, a number of cleaning modules to be used and / or contact elements and / or actuators is less than a number of printheads, which in particular reduces acquisition costs. Preferably, the cleaning direction is oriented parallel to the at least one nozzle surface of the at least one print head, so that a simple relative movement with simple means, such as a linear drive as a cleaning drive can be realized. Is preferred the cleaning direction orthogonal to one provided for a substrate

Transport direction oriented. This offers the particular advantage that a cleaning with only a few cleaning modules in a simple manner is possible even with such arrangements of printheads, in which not all print heads parallel to each other

Have ejection directions, such as in such cases in which printheads are arranged around a central cylinder around. The at least one print head is preferably designed as a printhead which is arranged stationarily in a printing operation.

The at least one positioning drive is preferably designed as at least one linear drive, for example as at least one cylinder with at least one

Cylinder piston, in particular as at least one fluid cylinder, for example, at least one hydraulic cylinder and preferably at least one pneumatic cylinder. Alternatively or additionally, other types of drives are possible, for example, electric and / or magnetic drives and / or drives having rotors and / or stators. If a cylinder is mentioned, then in particular a corresponding piston movable therein is meant. For example, at least one single-acting and / or double-acting drive, in particular cylinders is used. At least one component of the at least one positioning drive is preferably arranged in a stationary manner relative to the at least one carrier.

In addition to the at least one positioning drive and the at least one lever body, at least one guide element is arranged at least temporarily in contact with the at least one lever body and / or the at least one contact element, by which the setting direction of a setting path of the at least one contact element is predetermined. As a result, an optimized adjusting movement of the at least one contact element is made possible. Preferably, the at least one

Lever body at the second location in at least one compensation direction movably connected to the at least one carrier and mounted on the at least one carrier. This compensation direction has, for example, at least one component which is oriented orthogonal to the Anstellrichtung. As a result, it can be achieved that the at least one contact element follows the at least one guide element and not, for example, an arcuate movement which could occur with a fixed connection at the second location and at the same time a very large positioning travel. Alternatively, the at least one lever body at the second location is firmly connected to the at least one carrier, in particular when the Anstellweg is so small that the at least one contact body can easily follow the guide element, without causing difficulties due to any arcuate movements. Preferably, the at least one guide element is at least temporarily in contact with the at least one lever body and / or the at least one contact element at at least one fourth location, wherein more preferably the at least one fourth location of the first location is closer than the second location and more preferably also closer than the third digit. Preferably, the first location is located between the third location and the fourth location.

Preferably, the at least one cleaning module has a plurality of

Contact elements, each with its own Anstellantrieb and its own

Lever body is assigned. This ensures that even printheads with different ejection directions can be cleaned by means of a common cleaning module. Thus, manufacturing costs and operating costs can be saved, especially because fewer cleaning drives are necessary. Preferably, the plurality of Anstellantrieben via at least one common in particular pneumatic supply line can be activated simultaneously and / or each cleaning module has exactly one first dispensing device. As a result, control devices such as valves can be saved. Preferably, the plurality of contact elements together with the at least one carrier in particular relative to the at least one print head in and / or arranged opposite to the cleaning direction movable.

Preferably, the at least one first dispensing device and / or the at least one Gas outlet nozzle and / or the at least one cleaning module arranged relative to a frame of the at least one printing unit and / or relative to the at least one print head movable. Preferably, the at least one first dispensing device and / or the at least one gas outlet nozzle on the one hand and the at least one

Printhead on the other hand arranged relative to each other movable. Preferably, the at least one contact element is arranged at least indirectly on the at least one carrier. The at least one first dispensing device and / or the at least one gas outlet nozzle are preferably arranged on the at least one carrier, in particular on the carrier on which the at least one positioning drive and / or the at least one lever body are arranged.

The at least one first dispensing device is preferably designed as at least one first spray nozzle. More preferably, a dispensing opening of the at least one first dispensing device, in particular spray opening with at least one component to the at least one outlet opening of the at least one gas outlet nozzle. More preferably, the discharge opening of the at least one dispensing device with at least one component to the at least one contact element. As a result, contactless cleaning agent can be applied at least to the at least one contact element.

Preferably, the printing unit is characterized in that the at least one

Cleaning module has at least one, in particular designed as a second spray nozzle second dispensing device for example, at least partially liquid detergent, which is further preferably with its discharge opening, in particular spray opening of the at least one print head facing away aligned and / or arranged alignable. Under at least partially liquid detergent is to be understood in particular completely liquid detergent. The printing group preferably has at least one collecting device, for example collecting trough. Further preferred is the at least one second dispensing device with its dispensing opening, in particular Spray opening preferably oriented from above on the at least one collecting device aligned and / or arranged alignable. Preferably, the at least one second dispensing device is arranged to be movable relative to the at least one collecting device. By this second dispensing device, it is possible in an advantageous manner to clean the catcher without an operator would have to intervene manually. As a result, the catcher can always be kept clean, without it being necessary to disassemble parts of the printing unit. Thus, the

Increased operational safety, because regular cleaning is possible without much effort.

The printing unit is preferably additionally or alternatively characterized in that at least one upper spray shield is stationary relative to the at least one

Receiving device is arranged.

Preferably, the at least one gas outlet nozzle is designed as at least one gas meter, in particular as an air knife. This allows a particularly effective removal of detergent and / or contamination can be made with low gas consumption. Preferably, at least one, for example, convexly curved guide surface is subsequently arranged in an outlet direction of the at least one gas outlet nozzle to at least one outlet opening of the at least one gas outlet nozzle. This allows the escaping gas to be particularly close to a desired one

Moving direction are brought to the corresponding nozzle surface. Preferably, a rectilinear connection of one of the at least one outlet opening of the at least one gas outlet nozzle facing the end of the curved Leifläche with a said at least one outlet opening facing away from the end of this guide surface in a direction having at least one component, based on the

Cleaning direction of this at least one gas outlet nozzle to the at least one first dispensing device has. This results in particularly advantageous

Flow conditions. Preferably, the incident on the at least one nozzle surface, originating from the at least one gas outlet nozzle gas stream at its Impact on the at least one nozzle surface on a central direction, whose parallel to the at least one nozzle surface oriented component is greater than its orthogonal to the at least one nozzle surface oriented component. This will

For example, reduces a risk or prevents dirt is transported by the gas flow in the nozzle openings.

Particularly advantageous is a method for cleaning the at least one nozzle surface of the at least one print head of the printing unit, wherein in an application process, the at least one arranged in particular on a carrier first dispensing device of the at least one cleaning module is moved in the cleaning direction relative to the at least one print head and at least an at least partially liquid cleaning agent is applied by means of the at least one first dispensing device to the at least one nozzle surface and wherein thereafter in a first

Removal process, the at least one arranged in particular on the carrier gas outlet nozzle in and / or opposite to the cleaning direction is moved relative to the at least one print head and in particular for removing at least the cleaning agent from the at least one nozzle surface of the at least one

Outlet opening of the at least one gas outlet nozzle at least one gas or

Gas mixture is ejected in particular in the form of at least one gas stream directed to the at least one nozzle surface of the at least one print head. This allows a completely contactless cleaning of the nozzle surface. In particular, this reduces the risk of clogging the nozzles of the print head. As a result, a cleaning of the nozzle itself is unnecessary or at least greatly simplified.

For example, in a discharge process, a coating agent, in particular ink, is dispensed from at least one nozzle of the at least one print head associated with the at least one nozzle surface. As a result, for example, dirt and / or dried coating agent can be conveyed out of the nozzle openings. Thereafter, in a peeling operation, the at least one is preferred in particular arranged on the at least one carrier contact element

For example, brought into contact with the nozzle surface and in particular thereafter with the at least one nozzle surface in contact relative to the at least one

Printhead moved in and / or opposite to the cleaning direction. Preferably, the coating agent delivered in the exit process is at least partially removed from the at least one nozzle surface. This still allows the nozzles of the printhead to be cleaned without it being necessary to move detergent through the nozzles in any direction.

Preferably, the method is additionally or alternatively characterized in that then in a maintenance process, a cleaning of the at least one

Contact element is made. Preferably, in a first sub-process of the maintenance process, the at least one cleaning module is preferably positioned with respect to the cleaning direction such that the at least one

Contact element is arranged in relation to the cleaning direction between the at least one first dispensing device and an upper spray shield. Preferably, the at least one first dispensing device is then activated, for example, in a further and / or second subprocess of the maintenance process, thereby applying cleaning agent to the at least one contact element and / or activating the at least one gas outlet nozzle in a further, for example, fourth subprocess of the maintenance process and thereby the at least one contact element, for example, from the at least one

Gas outlet nozzle exposed to escaping gas flow. Preferably, the method is additionally or alternatively characterized by the fact that, for example, between the second part process and the fourth part process in a further and / or third part of the maintenance process, the at least one cleaning module in the cleaning direction is moved so far that subsequently at least one

Contact element with respect to the cleaning direction between the at least one

Gas outlet nozzle and the upper spray shield is arranged. Preferably, the method is additionally or alternatively characterized in that the at least one print head is moved linearly from a printing position to a rest position before the application process. Preferably, the method is additionally or alternatively characterized in that prior to application of the cleaning agent on the at least one contact element, the at least one contact element is moved in a Anstellrichtung and / or that after deactivation of the at least one first

Dispensing device, the at least one contact element again against the

Anstellrichtung is moved. Preferably, the method is additionally or alternatively characterized in that prior to activating the at least one gas outlet nozzle and thus before the at least one contact element is exposed to the exiting gas stream, the at least one contact element is moved in the Anstellrichtung and / or that after deactivation of at least a gas outlet nozzle, the at least one contact element is again moved counter to the Anstellrichtung.

Preferably, the method is additionally or alternatively characterized in that

Preferably, the method is additionally or alternatively characterized in that in the stripping process, the coating agent delivered in the discharge process is at least partially removed from the at least one nozzle surface.

Preferably, the method is further distinguished by the fact that, in particular, in a rinsing process, the at least one second dispensing device of the at least one cleaning module is moved in and / or counter to the cleaning direction relative to the at least one print head and at least partially liquid cleaning agent from the at least one second

Dispensing device is delivered in particular directed in a direction away from the at least one nozzle surface direction on the preferably at least partially disposed below the at least one nozzle surface collecting device. Embodiments of the invention are illustrated in the drawings and will be described in more detail below.

Show it:

Fig. 1 is a schematic representation of a roll printing machine;

Figure 2 is a schematic representation of a roll printing machine with alternative web guide.

Fig. 2 is a schematic representation of a part of a printing unit with a

Double row of printheads;

Fig. 3 is a schematic representation of a printing unit having a plurality of nozzle bars, the print heads are arranged in printing positions;

4 shows a schematic representation of a printing unit with a plurality of nozzle bars, whose print heads are arranged in rest positions, in particular maintenance positions, wherein positioning drives are shown interrupted for the sake of clarity;

5 shows a schematic representation of a part of a cleaning device;

Fig. 6 is a schematic representation of a part of a cleaning device and a print head;

7 shows a schematic representation of a part of a cleaning device; Fig. 8 is a schematic representation of a cleaning device according to a Section along the line VIII in Fig. 5;

Fig. 9 is a schematic representation of an alternative trained

Cleaning device in a representation analogous to that of FIG. 8;

10a is a schematic representation of a printing unit with a plurality of nozzle bars and an alternative type of positioning devices;

10b shows a schematic representation of the printing unit according to FIG. 10a with a plurality of nozzle bars in positions which permit a cleaning of at least one nozzle area.

A printing press 01 has, for example, at least one printing material source 100, at least one first printing unit 200, preferably at least one first dryer 301, preferably at least one second printing unit 400 and preferably at least one second dryer 331 and preferably at least one post-processing device 500. The printing machine 01 is also preferably designed as an inkjet printing machine 01. Preferably, the printing machine 01 is designed as a roller printing machine 01, more preferably as a roller inkjet printing machine 01. Die

Printing machine 01 is formed, for example, as a rotary printing press 01, for example, as a rotary web press 01, in particular rotary-rotary inkjet printing machine 01. In the case of a roller printing machine 01 is the

Substrate 100, for example, designed as Rollenabspulvorrichtung 100. In the case of a sheet-fed press or sheet-fed rotary printing machine is the

Substrate 100 formed for example as a sheet feeder. In the

Substrate 100 is preferably at least one substrate 02 aligned, preferably with respect to at least one edge of this substrate 02. The substrate 02 is for example at least one web-shaped substrate 02, so a

Substrate web 02, for example a paper web 02 or a textile web 02 or a film 02, for example a plastic film 02 or a metal foil 02. An axial direction A is preferably a direction A, which is parallel to a rotation axis 1 1 1 of a Bedruckstoffrolle 101 and / or to a rotation axis 207; 407 at least one central cylinder 201; 401 and / or to an axis of rotation of one in the first

Pressure unit 200 arranged Bedruckstoffleitelements extending.

A transport path of the at least one printing substrate 02 and in particular the

Substrate web 02 runs after the at least one printing material source 100, preferably by the at least one first printing unit 200, where the printing substrate 02 and in particular the printing material web 02 preferably by means of at least one

Coating agent, in particular at least one ink and / or ink at least one side and preferably in conjunction with the at least one second

Printing unit 400 is preferably provided on two sides with at least one printed image.

After passing through the at least one first printing unit 200, the transport path of the printing substrate 02 and in particular of the printing material web 02, for example, passes through the at least one first dryer 301 in order to dry the applied ink and / or printing ink. Under ink and / or ink is in

Previous and generally below to understand a coating agent, in particular a paint. Preferably, the at least one first dryer 301 is part of a dryer unit 300.

Hereinafter, a roll printing machine 01 will be described in more detail. Corresponding details can, however, also be transferred to other printing machines 01, for example sheet-fed printing machines, provided that they do not contradict this.

Bedruckstoffrollen 101, which are preferably used in the Rollenabspulvorrichtung 100 used, preferably each have a sleeve on which the web-shaped substrate 02 is wound for use in the roller printing machine 01. The

Printing material web 02 preferably has a width of 700 mm to 2000 mm, but can also have an arbitrarily smaller or preferably larger width.

A working width of the printing machine 01 is a dimension that preferably extends orthogonally to the intended transport path of the printing substrate 02 through the at least one first printing unit 200, more preferably in the axial direction A. The working width of the printing press 01 preferably corresponds to a maximum width, the one Substrate 02 may have to still be processed with the printing press 01, so a maximum processable with the printing press 01 substrate width.

The first printing unit 200 is preferably downstream of the Rollenabspulvorrichtung 100 with respect to the transport path of the printing substrate 02. The first printing unit 200 has, for example, at least one first pressure center cylinder 201 or short center cylinder 201. If in the following a Zentraizylinder 201 is mentioned, then always a pressure center cylinder 201 is meant. The printing material web 02 preferably wraps around the first Zentraizylinder 201 at least partially in a printing operation. In this case, a wrap angle is preferably at least 180 ° and more preferably at least 270 °. The wrap angle is the angle measured in the circumferential direction of a cylinder jacket surface of the first central cylinder 201, along which the printing material 02 and in particular the printing material 02 is in contact with the first Zentraizylinder 201. The printing material web 02, for example, wraps around a part of a first one

Guide roller 203 and is deflected by this so that the transport path of the printing substrate 02 in a first intermediate space 204 is both tangential to the first guide roller 203 and tangent to the first Zentraizylinder 201.

Preferably, at least one first cylinder 206 designed as the first impression roller 206 is arranged in the first pressure unit 200. In a state applied to the first Zentraizylinder 201, the first impression roller 206 preferably forms together with the first Zentraizylinder 201 a first impression gap 209. The first Zentraizylinder 201 points preferably owns a, the first central cylinder 201 associated first

Drive motor 208, which is preferably designed as an electric motor 208 and is further preferably designed as a direct drive 208 and / or individual drive 208 of the first central cylinder 201.

On the first drive motor 208 of the first central cylinder 201 and / or on the first central cylinder 201 itself, a first rotation angle sensor is preferably arranged, which has a rotational angle position of the first drive motor 208 and / or the first

Central cylinder 201 itself measuring and / or measuring and sending to a higher-level machine control and / or is designed to transmit. The first

Rotation angle sensor is designed for example as a rotary encoder or absolute value encoder. With such a rotation angle sensor, a rotational position of the first drive motor 208 and / or preferably a rotational position of the first central cylinder 201 is preferably determined absolutely by means of the higher-level machine control.

Additionally or alternatively, the first drive motor 208 of the first central cylinder 201 is connected to the machine control such that the

Machine control due to from the machine control to the first

Drive motor 208 of the first central cylinder 201 predetermined target data to a rotational position of the first drive motor 208 at any time on the rotational position of the first drive motor 208 and thus at the same time the rotational position of the first central cylinder 201 is informed.

Within the first printing unit 200, at least one first printing unit 21 1

arranged. The at least one first printing unit 21 1 is preferably in the direction of rotation of the first central cylinder 201 and thus along the transport path of

Substrate web 02 after the first impression roller 206 preferably arranged on the at least one first central cylinder 201 acting and / or operative and / or arranged and / or alignable. The at least one first printing unit 21 1 is preferred is formed as a first ink-jet printing unit 21 1 and is also called first ink-jet printing unit 21 1. The at least one first printing unit 21 1 preferably has at least one nozzle bar 213 and more preferably a plurality of nozzle bars 213. The at least one first printing unit 21 1 and thus the at least one first printing unit 200 preferably has the at least one first printing head 212, which is preferably designed as an inkjet printing head 212. Preferably, the at least one

Nozzle bars 213 each have at least one print head 212 and preferably a plurality of print heads 212 each. Each print head 212 preferably has a plurality of nozzles from which coating agent drops, in particular ink droplets and / or

Ink drops are ejected and / or ejected. The nozzles preferably end in nozzle openings of a surface 232 of the respective at least one print head 212 formed as nozzle surface 232. A nozzle surface 232 is preferably a surface 232 of the at least one print head 212 having a plurality of nozzles, in particular nozzle openings.

In this case, a nozzle bar 213 is a component which preferably extends over at least 80% and more preferably at least 100% of the working width of the printing press 01 in the axial direction A and which serves as a carrier for the at least one print head 212. An axial length of a bale of the at least one first is preferred

Central cylinder 201 at least as large as the working width of the printing press 01st In this case, a single or several nozzle bars 213 per printing unit 21 1 are arranged. Each nozzle is preferably a clearly defined target area on the direction A of the width of the printing substrate 02 and preferably referred to the direction A, in particular the axis of rotation 207 of the at least one first central cylinder 201

assigned. Preferably, each target area of a nozzle, in particular with respect to the circumferential direction of the at least one first central cylinder 201, is clearly defined at least in the printing operation. In particular, a target region of a nozzle is that region of space which is in particular substantially rectilinear and which is located in one

Ejecting direction of this respective nozzle extends from this respective nozzle. The at least one first nozzle bar 213 preferably extends orthogonally to the intended transport path of the printing substrate 02, preferably over the working width of the printing press 01. The at least one nozzle bar 213 preferably has at least one row of nozzles. The at least one row of nozzles, as seen in the axial direction A, preferably has nozzle openings at intervals, for example, over the entire working width of the printing machine 01 and / or width of the bale of the at least one first central cylinder 201. In one embodiment, a single continuous print head 212 is arranged for this purpose, which extends in the axial direction A over the entire working width of the printing press 01 and / or the entire width of the bale of the at least one first central cylinder 201. In this case, the at least one row of nozzles is preferred as at least one linear, extending over the entire width of the printing substrate 02 in the axial direction A.

Sequence formed by individual nozzles. In another, preferred embodiment, a plurality of print heads 212 are arranged next to each other on the at least one nozzle bar 213 in the axial direction A. Since usually such individual print heads 212 are not provided with nozzles up to an edge of their housing, preferably at least two, and more preferably exactly two, rows of print heads 212 extending in the axial direction A are arranged offset relative to one another in the circumferential direction of the first central cylinder 201, preferably so in that in the axial direction A successive printheads 212 preferably belong alternately to one of the at least two rows of printheads 212, preferably always alternately a first and a second of two rows of printheads 212. Two such rows of printheads 212 form a double row of printheads 212. Each double row of print heads 212 has, for example, between five and twenty-five print heads 212, and more preferably seven or fourteen print heads 212. The at least one row of nozzles is preferably not as a single linear

Sequence of nozzles formed, but results in the sum of several individual, more preferably two, circumferentially offset from each other Sequences of nozzles.

If a print head 212 has a plurality of nozzles, then all target areas of the nozzles of this print head 212 together form a working area of this print head 212. Working areas of print heads 212 of a nozzle bar 213 and in particular a double row of print heads 212 adjoin one another and / or overlap in the axial direction A. seen in the axial direction A. In this way, even when the print head 212 is not continuous in the axial direction A, target areas of nozzles of the at least one nozzle bar 213 and / or in particular of each double row of print heads 212 are located at regular and preferably periodic intervals in the axial direction A. In any case, an entire working area of the at least one nozzle bar 213 preferably extends over at least 90% and more preferably 100% of the working width of the printing machine 01 and / or the entire width of the bale of the at least one first central cylinder 201 in the axial direction A. or both sides with respect to the axial direction A, a narrow portion of the

Substrate web 02 and / or the bale of the first central cylinder 201 may be present, which does not belong to the working area of the nozzle bar 213. An entire

Working range of the at least one nozzle bar 213 is preferably from all

Work areas of printheads 212 this at least one nozzle bar 213 composed and is preferably from all target areas of nozzles this

Printheads 212 this at least one nozzle bar 213 composed. Preferably, an entire working area of a double row of print heads 212 in the axial direction A corresponds to the working area of the at least one nozzle bar 213.

The at least one nozzle bar 213 preferably has a plurality of rows of nozzles in the circumferential direction with respect to the at least one first central cylinder 201 and / or in a transport direction B provided for the printing substrate 02. Preferably, each printhead 212 has a plurality of nozzles, more preferably in a matrix of multiple rows in the axial direction A and / or multiple columns, preferably in FIG Circumferential direction of the at least one first central cylinder 201 are arranged. Such columns are further preferably arranged running obliquely to the circumferential direction, for example, to increase a resolution of a printed image. Thus, in each case one row of nozzles and one column of nozzles preferably enclose an angle other than 90 °. Preferred are in a direction orthogonal to the axial direction A, in particular in the transport direction B along the provided

Transport path of the printing substrate 02 and / or in the circumferential direction relative to the at least one central cylinder 201 a plurality of rows of print heads 212, more preferably four double rows and even more preferably eight double rows of

Printheads 212 arranged one after another.

At least in the printing operation, the print heads 212 are preferably aligned such that the nozzles of each print head 212 point in the radial direction onto the cylinder jacket surface of the at least one first central cylinder 201. Deviations from radial directions within a tolerance range of preferably not more than 10 ° and more preferably not more than 5 ° are to be considered essentially radial directions. This means that the at least one print head 212 aligned with the lateral surface of the at least one first central cylinder 201 is aligned with the rotational surface 207 of the at least one first central cylinder 201 in a radial direction on the lateral surface of the at least one first central cylinder 201. In this case, this radial direction is a radial direction relative to the axis of rotation 207 of the at least one first central cylinder 201. Everyone

Double row of printheads 212 is preferably associated with and / or assignable to an ink and / or printing ink of a specific color, for example one of the colors black, cyan, yellow and magenta or a varnish, for example a clear varnish. The corresponding inkjet printing unit 21 1 is preferably formed as a multi-color printing unit 21 1, in particular four-color printing unit 21 1 and allows a one-sided multicolor, in particular four-color printing of the printing substrate 02. It is also possible, less or more different colors with a printing unit 21 1 print, for example, additional spot colors. In one embodiment, at least in the printing mode, a plurality of rows of printheads 212, more preferably four double rows, and more preferably eight double rows of printheads 212 are sequentially aligned on at least one surface of at least one transfer body, eg, at least one transfer cylinder and / or at least one transfer belt.

The at least one print head 212 preferably operates to produce coating agent drops according to the drop-on-demand method, in which coating agent drops are selectively produced as required, in particular in selectable drop size

(Amplitude modulation). Preferably, at least one piezoelectric element per nozzle is used, which upon application of a voltage and / or variation of an applied

Stress can reduce a filled with coating agent volume at high speed by a certain proportion. As a result, coating agent is displaced, which is ejected through a nozzle connected to the volume filled with coating agent and forms at least one coating agent drop. It is also possible to use at least one heating element per nozzle, which in one with

Coating agent filled volume at high speed by evaporation of coating agent generates a gas bubble. In the drop-on-demand process, it is possible, a target position of the respective coating agent drop on the moving printing material 02 with respect to the circumferential direction of the at least one first

Central cylinder 201 alone by an emission date of the respective

Coating agent drop and a rotational speed of the first

Central cylinder 201 and / or determined by the rotational position of the first central cylinder 201.

The nozzles of the at least one print head 212 are arranged such that a distance between the nozzles and the printing material web 02 arranged on the cylinder jacket surface of the at least one first central cylinder 201 at least in one Printing position arranged print head 212 is preferably between 0.5 mm and 5 mm and more preferably between 1 mm and 1, 5 mm. The high angular resolution and / or the high sampling frequency of the rotation angle sensor and / or the high accuracy of the predetermined by the machine control and processed by the first drive motor 208 of the first central cylinder 201 target data to the rotational position of the first

Drive motor 208 of the first central cylinder 201 allows a very accurate

Orientation and / or knowledge of the position of the printing material web 02 relative to the nozzles and their target areas. A drop flight time between the nozzles and the printing material web 02 is known, for example, by a teaching process and / or by the known distance between the nozzles and the printing material web 02 and a known drop speed. From the rotational angle position of the at least one first central cylinder 201 and / or the first drive 208 of the at least one first central cylinder 201, the rotational speed of the at least one first

Central cylinder 201 and the drop flight time is an ideal time to eject a respective drop determined, so that a passer-friendly and / or register-oriented imaging of the printing substrate 02 is achieved.

In a regular printing operation, all printheads 212 are stationary. This ensures a permanent passport-oriented and / or register-oriented alignment of all nozzles. There are different situations where a movement of the

Printheads 212 is necessary. A first such situation makes a flying

Roller change or generally a roll change with gluing process or generally a web feed with a thicker point of the web to be recovered. The at least one nozzle bar 213 is therefore in at least one direction and / or along at least one travel relative to the axis of rotation 207 of the at least one first

Central cylinder 201 and / or the intended transport path of the printing material 02 movable. In this way, the distance can be sufficiently increased, but must be subsequently reduced accordingly again. A second such situation arises, for example, during installation and / or maintenance and / or cleaning and / or an exchange of at least one of the print heads 212. The print heads 212 are preferably individually attached to the at least one nozzle bar 213 and individually detachable from the at least one nozzle bar 213. This allows individual printheads 212 to be maintained and / or cleaned and / or replaced.

The printing machine 01 preferably has at least one printing unit 200; 400, wherein the at least one printing unit 200; 400 at least one, preferably one

Ejection direction, as the ink jet print head 212; 412 formed print head 212; 412 and preferably a plurality, preferably each having an ejection direction, as ink jet print heads 212; 412 formed print heads 212; 412 and preferably at least one about a respective axis of rotation 207; 407 rotatable Bedruckstoffleitelement 201; 401, by means of which preferably at least one transport path provided for preferably web-shaped printing material 02 is at least partially fixed and / or fixable.

This is preferably at least one printing material guide element 201; 401 within the at least one printing unit 200; 400 arranged and / or that is at least one Bedruckstoffleitelement 201; 401 as at least one web guide roll and / or a guide roller 203; 312; 403 and / or as at least one pressure central cylinder 201; 401 and / or formed as at least one transmission body.

Preferably, the at least one printhead 212 is at least one

Positioning device 217; 218; 219; 221 connected and / or connectable. More preferably, the at least one print head 212 is permanently connected to the at least one positioning device 217; 218; 219; 221 connected and only for assembly and / or disassembly purposes and / or replacement of the at least one print head 212 of the at least one positioning device 217; 218; 219; 221 separable.

Preferably, at least one of at least two print heads 212 is further preferably at least either by means of a positioning device 217 assigned to it can be arranged in a printing position assigned to it or can be arranged in at least one rest position assigned to it.

Preferably, a printhead 212 arranged in its printing position is characterized in that at least one nozzle of the at least one printhead 212 is conveyed from an intended transport path for printing stock 02 and / or from the printing substrate 02 and / or from a transfer body and / or from the printing substrate guide element 201; 401 has a distance which is at most 5 mm and more preferably at most 1, 5 mm and / or is preferably at least 0.5 mm and more preferably at least 1 mm.

The at least one print head 212 is preferably in particular by means of the at least one positioning device 217; 218; 219; 221 in at least one rest position and more preferably in at least two different rest positions can be arranged. The at least one rest position is formed, for example, as at least one maintenance position and / or as at least one mounting position. A maintenance position is preferably a position in which the at least one print head 212 can be maintained, for example, cleaned and / or aligned and / or stored in a particular secured against contamination and / or drying, especially without the at least one print head 212nd from the printing machine 01 and / or the at least one printing unit 200; 400 to remove. A

Mounting position is preferably a position in which the at least one print head 212 from the printing machine 01 and / or the at least one printing unit 200; 400 and / or taken from the at least one nozzle bar 213 and / or in the

Printing machine 01 and / or the at least one printing unit 200; 400 and / or the at least one nozzle bar 213 can be used. In particular, more space is preferably available in the mounting position of an operator to access the at least one print head 212, while in the maintenance position preferably only enough space is available to internal, especially automatically to be able to carry out ongoing operations within the printing press 01, for example a cleaning of a nozzle surface 232 of at least one print head 212.

Preferably, respective maintenance positions of the printheads 212 are characterized by the fact that different printheads 212 arranged in their respective maintenance positions have different distances from one another than in their respective printing positions and / or in their respective mounting positions.

In one embodiment, the at least one positioning device 217; 218, 219; 221 at least one positioning guide 224 and more preferably several

Positioning guides 224 and more preferably each have a positioning guide 224 per movable nozzle bar 213 and / or per movable printhead 212 on. In a preferred embodiment of the at least one positioning device 217; 218, 219; 221, the at least one positioning device 217; 218, 219; 221 at least one linear, preferably designed as a rail 224 positioning guide 224 and more preferably several, in particular four preferably designed as rails 224th

Positioning guides 224 and more preferably each at least one preferably designed as rail 224 positioning guide 224 per movable nozzle bar 213 and / or per movable printhead 212 on. Further preferably, each nozzle bar 213 two arranged as a rail 224 positioning guides 224 are arranged, in particular one rail 224 each axial end of the at least one Bedruckstoffleitelements 201; 401, ie a total of at least eight rails 224 per printing unit 200; 400. Preferably and in particular if the at least one positioning guide 224 is designed as at least one rail 224, the travel of the at least one print head 212; 412 formed linear.

Thus, preferably, a printing press 01, which is at least one printing unit 200; 400 having at least two, more preferably at least three, and even more preferably at least four printheads 412, 212 and at least one about an axis of rotation 207; 407 rotatable printing material guide element 201; 401, wherein each of the at least two, preferably at least three and more preferably at least four print heads 212; 412 by means of a respective, at least this print head 212; 412 assigned

Positioning device 217; 218; 219; 221 is movably arranged along a respective linear travel. More preferably, the linear travel paths in respective directions of adjustment, in pairs by at least 10 °, more preferably at least 15 ° and independent of the lower limit by at most 150 °, more preferably at most 120 °, even more preferably at most 90 ° and even further preferably not more than 60 °. Preferably, all positioning directions differed from

Positioning devices 217; 218; 219; 221 of a same printing unit 200; 400 in all possible pairwise comparisons of at least 10 °, more preferably at least 15 ° and independent of the lower limit of at most 150 °, more preferably at most 120 °, even more preferably at most 90 ° and even more preferably at most 60 °. Positioning directions of printheads 212 preferably differ; 412, the

adjacent positioning devices 217; 218, 219; 221 are at least 10 °, more preferably at least 15 ° and independent of the lower limit of at most 60 °, more preferably at most 45 °, even more preferably at most 30 ° and even more preferably at most 20 °. It is preferably ensured that movements of the at least one print head 212 and / or nozzle bar 213 take place only in a plane which is defined by a surface normal, which is parallel to the axial

Direction A is arranged, in particular in the axial projection plane.

Preferably, each of the at least two, preferably at least three, and more preferably at least four printheads 212; 412 by means of the respective positioning device 217; 218; 219; 221 can be arranged optionally at least either in a printing position assigned to it and at least one maintenance position assigned to it, wherein in the at least one maintenance position of a first print head 212; 412 the at least two, preferably at least three and more preferably at least four print heads 212; 412 at least one cleaning device 222 at least a first nozzle of the at least one first Printhead 212; 412 is assigned and / or can be assigned. The one described in the foregoing and hereinafter with regard to the at least one cleaning device 222 preferably applies to each cleaning device 222, in particular also in the case of two, three or four or more cleaning devices per printing unit 200; 400. The at least one cleaning device 222 is preferably along at least one

Provision path between at least one parking position and at least one

Insert position movably arranged, in particular by means of at least one

Feeding device 223. In the case of several cleaning devices 222, each cleaning device 222 is preferably assigned its own provision path, its own parking position and its own insertion position. An optional component of the respective provision path of the at least one cleaning device 222 in a through the rotation axis 207; 407 of the at least one rotatable

Printing material guide element 201; 401 fixed axial direction A is preferably at most 50% of a measured in the axial direction A width of a working area of the at least one printhead 212 having nozzle beam 213 and / or at most 50% defined by a maximum processable with the printing press 01 width of the printing machine 01 ,

The actuating directions of the linear travel paths are preferably respectively orthogonal and in particular radial to the axis of rotation 207; 407 of the at least one rotatable Bedruckstoffleitelements 201; 401 aligned. Preferably, all printheads 212; 412 in their print positions and their rest positions, in particular

Maintenance positions and / or mounting positions arranged such that their respective nozzles always have a respective same orientation with respect to the ejection direction. Preferably, the print heads 212; 412 linear travel paths.

The at least one positioning device 217; 218, 219; 221 preferably has at least one positioning drive 226 and more preferably a plurality of positioning drives 226 and even more preferably one positioning drive 226 per movable nozzle bar 213 on. For example, each positioning guide 224 is assigned a positioning drive 226 in each case. The at least one positioning drive 226 is designed, for example, as at least one electric motor 226 and / or as at least one hydraulic cylinder 226 and / or preferably as at least one pneumatic cylinder 226. Preferably, the at least one positioning drive 226 is arranged such that it can selectively move the at least one print head 212 into its printing position or its maintenance position or its mounting position and more preferably also can hold it there. The at least one positioning drive 226 is preferably designed as at least one electric motor 226, for example as at least one stepping motor 226, and / or with at least one

Threaded spindle connected. The at least one threaded spindle is preferably in engagement with at least one spindle nut, which is connected to the respective nozzle bar 213.

Preferably, at least four positioning devices are arranged, by means of which in each case at least one nozzle bar 213 and / or in particular in each case a plurality of print heads 212 assigned to one and the same ink are designed to be movable together.

In particular, configurations can thereby be provided in which the print heads 212 of at least one nozzle bar 213 and / or at least one printing ink are arranged in their printing position, while the printing heads 212 of at least one other nozzle bar 213 and / or another printing ink are in a rest position,

For example, a maintenance position are arranged. This can be done

For example, all printheads 212 of an ink, such as black, activate while all the printheads 212 of other inks are maintained in a maintenance position where they are protected and / or cleaned from drying out, for example, by suitable means.

At least one first locking element is preferably arranged, for example at least one pressure stop. By means of the at least one first locking element, the at least one print head 212 is preferably detectable in its printing position, for example by the at least one positioning drive 226, in particular pneumatic cylinder 226, pulls and / or presses the at least one print head 212 and / or the nozzle bar 213 having the at least one print head 212 against the at least one pressure stop. This ensures that the printing position is reproducible and precisely defined.

Preferably, at least one second locking element is arranged, for example at least one maintenance stop. By means of the at least one locking element, the at least one print head 212 can preferably be detected in its maintenance position, for example by the at least one positioning drive 226, in particular

Pneumatic cylinder 226, the at least one print head 212 and / or the at least one print head 212 having nozzle bar 213 pulls against the at least one maintenance stop and / or pressed. This ensures that the

Maintenance position is reproducible and precisely defined.

At least one locking element, preferably at least one maintenance stop, is preferably designed to be movable in order to enable movements between extreme positions of a travel path of the at least one print head 212 and / or the at least one nozzle bar 213, in particular between the printing position and the mounting position. At least one preferably designed as a cleaning device 222 is preferred

Maintenance device 222 as at least one movable stop, in particular designed as a maintenance stop.

In the at least one maintenance position is preferably at least one

Cleaning device 222 of at least one nozzle of the at least one print head 212; 412 assigned and / or assignable and is more preferably at least one

Cleaning device 222 of at least one nozzle of the at least one print head 212; 412 arranged at least partially opposite to a respective ejection direction of the at least one nozzle and / or arranged. Preferably, a position of these respective at least one nozzle with the printhead 212 arranged in the at least one printing position and a position of the respective at least one nozzle differ with the printhead 212 arranged in the at least one maintenance position and / or mounting position and by the rotation axis 207; 407 of the at least one, preferably designed as a central cylinder 201

Printing material guide element 201; 401 fixed axial direction A at most 50%, more preferably at most 20% and even more preferably at most 10% and even more preferably at most 2% of a measured in the axial direction A width of a working area of the at least one print head 212; 412 having nozzle bar 213 and / or at most 50% and more preferably at most 20% and even more preferably at most 10% and even more preferably at most 2% of defined by a maximum processable with the printing machine 01 substrate width of the printing machine 01. In an alternative embodiment For this purpose, the at least one print head 212 is moved at least parallel to the axial direction A and the position of these respective at least one nozzle differ with the print head 212 arranged in the at least one print position and the position of these respective at least one nozzle in the at least one maintenance position and / or or mounting position arranged printhead 212 on the through the rotation axis 207; 407 of the at least one, preferably designed as a central cylinder 201

Printing material guide element 201; 401 fixed axial direction A related to at least 100% of the measured in the axial direction A width of the working area of the at least one print head 212; 412 having nozzle bar 213 and / or at least 100% of the maximum width of the printing machine 01 processable substrate width of the printing machine 01.

In the case of a printhead 212 arranged in the at least one maintenance position, at least one cleaning device 222 is preferably arranged between at least one nozzle of the at least one printhead 212; 412 and one of these at least one nozzle next At least one cleaning device 222 can be arranged between at least one nozzle of the at least one print head 212 and a region of a transfer body closest to this at least one nozzle when the print head 212 is arranged in the at least one maintenance position 212 and / or arranged.

The at least one cleaning device 222 preferably has an extent in each spatial direction that is greater than 10 cm, more preferably greater than 15 cm.

Preferably, the at least one cleaning device 222 in the axial direction A has an extent that is at least as large as the working range of the at least one nozzle bar 213 in the axial direction A. Preferably, the at least one cleaning device 222 in a transport direction of the printing material 02 a

Expansion, which is at least as large as the working range of the at least one nozzle bar 213 in the transport direction of the printing substrate 02. As a result, preferably all the nozzles of all print heads 212 of the at least one

Nozzle bar 213 be cleaned in one operation. In an alternative

Embodiment, the at least one cleaning device 222 in the

Transport direction of the substrate 02 to an extent that is at least as large as all working areas of all nozzle bars 213 of the printing unit 21 1 taken together in the transport direction of the substrate 02. As a result, all the nozzles of all the print heads 212 of the at least one printing unit 21 1 can then be cleaned in one operation.

The at least one nozzle bar 213 is preferably completely independent of those components of the printing press 01 movable, the printing material 02 touching and / or the intended transport path of the printing material 02 are arranged tangentially. Thus, cleaning and / or maintenance can be carried out without affecting the printing material web 02 and in particular without having to remove the printing material web 02 from the printing press 01. Preferably, the at least one cleaning device 222 is at least orthogonal to the axial direction A movable. Preferably, a provision path of the at least one cleaning device 222 is determined by at least one feed device 223.

Preferably, the at least one feed device 223 is at least one

Guide system 223 formed. Preferably, the at least one cleaning device 222 is along at least one provision path between at least one

Parking position and arranged at least one use position movable. Preferably, the further preferably determined by the at least one feed device 223

Provision path of the at least one cleaning device 222, no component in the axial direction A, which is greater than at most 50%, more preferably at most 20%, even more preferably at most 10% and even more preferably at most 2% of the measured width in the axial direction A. the working range of the nozzle bar 213 having the at least one print head 212 and / or at most 50%, more preferably at most 20%, even more preferably at most 10% and even more preferably at most 2% of the maximum with the printing press 01

Processable substrate width defined working width of the printing machine 01.

Preferably, a distance of the axial movement of the at least one

Cleaning device 222 at most 50%, more preferably at most 20%, even more preferably at most 10% and even more preferably at most 2% of the measured in the axial direction A width of the working area of the at least one print head 212; 412 having nozzle bar 213 and / or at most 50%, more preferably at most 20%, even more preferably at most 10% and even more preferably at most 2% of the maximum with the printing press 01

Processable substrate width defined working width of the printing machine 01. More preferably, the at least one cleaning device 222 is exclusively orthogonal to the axial direction A movable. In an alternative embodiment, the at least one cleaning device 222 is in the axial direction along the at least one provision path between the at least one parking position and the at least one Insert position movably arranged.

Preferably, a position of the at least one cleaning device 222 relative to the axial direction A in its parking position differs from an intended position of the at least one relative to the axial direction A.

Cleaning device 222 in its use position by at most 50%, more preferably at most 20%, even more preferably at most 10% and even more preferably at most 2% of a measured in the axial direction A width of a working area of the at least one printhead 212 having nozzle bar 213 and / or at most 50%, more preferably at most 20%, even more preferably at most 10% and even more preferably at most 2% of a working width of the printing press 01 determined by a maximum print substrate width processable by the printing machine 01.

The at least one feed device 223 preferably has at least one feed drive 229 and / or at least one traction means 228 and / or thrust means 228. In one embodiment, the at least one feed drive 229 is stationary on a frame 331 of the at least one printing unit 200; 400 arranged and the at least one traction means 228 and / or pushing means 228 is connected to the at least one cleaning device 222 and relative to the frame 231 of the at least one printing unit 200; 400 formed movable, for example as a chain 228th In an alternative

Embodiment, the at least one feed drive 229, in particular arranged to be movable together with the at least one cleaning device 222 and the at least one traction means 228 and / or thrust means 228 arranged stationary and formed, for example, as at least one rail 228 and / or rack 228. The at least one feed drive 229 preferably has at least one stepper motor.

Preferably, the at least one printhead 212 and more preferably each printhead 212 is assigned a unique maintenance position. If the at least one Cleaning device 222 is arranged in its use position, it preferably serves as a locking element, for example in the form of at least one maintenance stop. The corresponding printhead 212 having nozzle bar 213 is at in his

Maintenance position arranged printhead 212 preferably by applying a force by means of the at least one positioning drive 226 and / or by gravity, in particular when the positioning drive 226 against the

Cleaning device pulled and / or pressed. This clearly defines the maintenance position. In this way, a positioning drive 226 and a suffice

Feed drive 229 to the printheads 212 reproducible and precise in their

Order printing positions, maintenance positions and mounting positions.

Preferably, each maintenance position of at least one print head 212 is assigned a unique insertion position of at least one cleaning device 222. Preferably, the at least one cleaning device 222 is formed as at least one protective cover 222, more preferably by means of the together with the at least one print head 212; 412 a closed volume is limited. A total of four nozzle bars 213 of a printing unit 200 are preferred; 400 four cleaning devices 222 arranged, each having at least one serving as a protective cover and / or usable area, which also serves as a cleaning area.

When at least one print head 212 is arranged in the print position, at least one nozzle of this at least one print head 212 is preferably below the print head 212

Provision path is arranged, along which the at least one

Cleaning device 222 preferably by means of the at least one feed device 223 preferably between the at least one parking position and the at least one

Insert position is arranged movable. In the case of at least one print head 212 arranged in the rest position, this at least one nozzle is preferably arranged above this provision path. A travel path of at least one print head 212 is preferably an example predetermined path along which the at least one print head 212 is movable, in particular to move the at least one print head 212 between its print position and its rest position, for example, maintenance position and / or mounting position. Preferably, the travel of the at least one printhead 212 has no component in the axial direction A that is greater than at most 50%, more preferably at most 20%, still more preferably 10% and even more preferably at most 2% in the axial direction A. measured width of the working range of the at least one print head 212 having nozzle beam 213 and / or at most 50%, more preferably at most 20%, even more preferably at most 10% and even more preferably at most 2% of the maximum with the

Printing machine 01 processable width of substrate defined working width of the printing press 01.

For cleaning the at least one nozzle surface of the at least one print head 212, the at least one cleaning device 222 is provided. The at least one

Cleaning device 222 preferably has at least one cleaning module 150 and preferably at least one collecting device 161, in particular collecting pan 161. Preferably, the at least one cleaning module 150 is arranged to be movable relative to the at least one collecting trough 161. Preferably, the at least one

Cleaning device 222 as a whole arranged to be movable relative to the at least one print head 212, in particular while the cleaning device 222 is arranged and remains in the maintenance position. This is preferably at least one

Cleaning module 150 thus in particular at least one cleaning module 150 for cleaning the at least one nozzle surface 232 of the at least one print head 212. The at least one cleaning module 150 is preferably permanently formed as part of the first printing unit 21 1 and / or at least one second printing unit 41 1. The at least one printing unit 21 1; 41 1 has at least one print head 212; 412 and the at least one cleaning device 222 with the at least one cleaning module 150 on.

The at least one cleaning module 150 preferably has at least one contact element 151, which by means of at least one Anstellantriebs 152 in particular from at least one spaced first relative position with the at least one nozzle surface 232 of the at least one print head 212; 412 can be brought into contact, in particular in a contacting second relative position. The at least one contact element 151 is preferably designed as at least one wiper 151 or puller 151, for example as at least one wiper blade 151. A wiper 151 or puller 151 is in this case a component which serves to remove material from this surface through a movement which maintains a contact between this component and a surface, for example by pushing away and / or removing and / or absorbing. One

Wiper blade 151 preferably extends in at least one direction over a length of several centimeters, for example 20 mm (twenty millimeters) to 30 mm (thirty millimeters), and more preferably over an entire extent of surface 232 to be cleaned by respective wiper blade 151 in that direction ,

Preferably, the at least one contact element 151 is arranged such that it can be brought into and out of contact with the at least one nozzle surface 232 of the at least one print head 212. This is preferably done by means of the at least one Anstellantriebs 152 and / or in and / or against a Anstellrichtung E. Die

Adjustment direction E is preferably a direction in and / or counter to which the at least one positioning drive 152 is capable of exerting a force and / or in and / or against which the at least one contact element 151 is movably arranged. In particular, the at least one contact element 151 can be moved in and / or counter to the setting direction E by means of the at least one positioning drive 152. A vertical component of the respective setting direction E is preferably larger than an optional horizontal component of the respective setting direction E. Preferably, the respective setting direction E deviates by less than 45 °, more preferably less than 30 ° and even more preferably less than 20 ° from a vertical direction. With respect to a mobility in and / or against a certain direction, for example the setting direction E, it should be noted that the variant defined by the word "and" is applicable at least in those cases in which the corresponding component is not in any end position of its possible setting path. In particular, it is possible that end positions or

Center positions allow movements in one or two directions or that one

Bias may be present in one direction and a corresponding drive in the other direction or just does not apply bias, but at least a two-way drive.

Preferably, the at least one cleaning module 150 has at least one lever body 153 and more preferably exactly one lever body 153 per positioning drive 152 and / or exactly one lever body 153 per contact element 151. The at least one adjusting drive 152 preferably does not interact directly with the at least one contact element 151, but indirectly via the at least one lever body 153. The at least one

Lever body 153 is preferably also referred to as wiper carrier 153. Preferably, the at least one lever body 153 is arranged with respect to the setting direction E between the at least one print head 212 and the at least one positioning drive 152. Preferably, the at least one contact element 151 is arranged at a first location of the at least one lever body 153 on this at least one lever body 153, more preferably attached. Preferably, the at least one lever body 153 is mounted at a second location of this at least one lever body 153 on at least one carrier 154 of the at least one cleaning module 150. If, in the foregoing and in the following, at least one carrier 154 is mentioned, then so is one

Assembly of rigid relative to each other arranged carrier elements meant, which together form the at least one carrier 154. Preferably, the at least one Anstellantrieb 152 at least temporarily at a third location of the at least one lever body 153 with this at least one lever body 153 in contact and / or is at least one Anstellantrieb 152 at least temporarily at the third point of the at least one lever body 153 can be brought into contact with this at least one lever body 153. The third location is preferably arranged along the at least one lever body 153 between the first location and the second location. In particular, therefore, a contact between Anstellantrieb 152 and lever body 153 between the

Connection of the at least one lever body 153 with the at least one

Contact element 151 on the one hand and the connection of the at least one lever body

153 with the at least one carrier 154 on the other.

The at least one lever body 153 is preferably made of at least one elastic material. In particular, the at least one lever body 153 is preferably reversibly deformable and the at least one lever body 153 preferably has its own

Restoring force. Preferably, the at least one lever body 153 is designed as at least one spring plate 153. For example, a dimension of the at least one lever body 153 in the setting direction E is less than each dimension of the at least one lever body 153 in each direction orthogonal to the setting direction E.

Preferably, based on a direction pointing from the first location to the second location, the third location is located between the first location and the second location.

At least one component of the at least one positioning drive 152, for example a housing and / or a cylinder, is preferably arranged in a stationary manner relative to the at least one carrier 154. More preferably, at least one other component of the at least one positioning drive 152 is movable relative to the at least one carrier

154, for example at least one rotor and / or at least one rotor and / or at least one piston.

The at least one positioning drive 152 is preferably designed as at least one linear drive 152, for example as at least one cylinder 152 with at least one

Cylinder piston, in particular as at least one fluid cylinder 152, for example as at least one hydraulic cylinder 152 and preferably as at least one pneumatic cylinder 152. Alternatively or additionally, other drives come into question, for example at least one electric and / or magnetic linear drives and / or at least one camshaft. In this context, a cylinder is to be understood as meaning a hollow body in which a piston is movably arranged, irrespective of whether it is a circular cross-sectional shape or not. There are single-acting Anstellantriebe with bias or twice, so in opposite directions acting actuators into consideration, especially single-acting cylinder or double-acting cylinder.

For example, the at least one lever body 153 is formed as a restoring element 153, which is preferably at least when activated Anstellantrieb 152 acting against the Anstellrichtung E force on the at least one Anstellantrieb 152 exercising arranged. Preferably, the at least one Anstellantrieb 152 and the at least one lever body 153 at least temporarily spaced from each other and / or can be arranged. For example, the at least one restricts

Anstellantrieb 152 the at least one lever body 153 only against the Anstellrichtung E in the freedom of movement. In particular, the at least one lever body 153 is movable in at least one direction, in particular the setting direction E, relative to each part of the adjusting drive 152. Thus, when the positioning drive is deactivated, a low level of decency between the positioning drive 152 and the lever body 153 is preferably present.

In addition to the at least one adjusting drive 152 and the at least one lever body 153, at least one guide element 156, which is in contact at least temporarily with the at least one lever body 153 and / or the at least one contact element 151, is preferably arranged, through which the setting direction E of a setting path of the at least one Contact element 151 is predetermined. The at least one guide element 156 is preferably in contact, at least temporarily, with the at least one lever body 153 and / or the at least one contact element 151 at at least one fourth location and is the at least one fourth location of the first location is closer than the second location and more preferably also closer than the third location. More preferably, the first location is located between the third location and the fourth location. The at least one guide element 156 is formed, for example, as at least one screw 156 which is arranged on the at least one carrier 154 and extends through a recess of the at least one lever body 153 and / or the at least one contact element 151.

In one embodiment of a connection, the at least one lever body 153 is movably connected to the at least one carrier 154 at the second location in at least one compensation direction F and mounted on the at least one carrier 154. For example, this compensation direction F has at least one component that is oriented orthogonally to the adjustment direction E. As a result, that end of the at least one lever body 153, on which the at least one contact element 151 is arranged, can be moved almost completely or completely linearly, for example also if, due to large positioning paths of the at least one contact element 151, otherwise due to a

Pivoting a wedging in the at least one guide element 156 would be feared. For example, the at least one lever body 153 has at least one elongated shaped hole which cooperates with at least one screw arranged on the at least one support 154. However, the preferred is

Anstellweg the at least one contact element 151 so short that such problems do not occur, but the movement of the at least one contact element 151 is substantially or at least approximately linear. Preferably, the adjustable by the at least one Anstellantrieb 152 Anstellweg of at least one

Kotaktelements 151 a length of 2 mm to 3 mm. More preferably, however, this Anstellweg is not fully utilized during a cleaning operation of the at least one nozzle surface 232, because previously a contact between nozzle surface 232 and contact element 151 occurs. In an alternative embodiment, the at least one lever body 153 is fixedly connected to the at least one carrier 154 at the second location, in particular then the at least lever body 153 is connected to one End rigidly arranged relative to at least one part of the at least one Anstellantriebs 152.

For example, after the at least one contact element 151 has been set against the at least one nozzle surface 232, a wiping movement or

Peeling motion. For this purpose, at least one cleaning drive 157 and at least one cleaning guide 168 are preferably arranged. The at least one contact element 151 and the at least one print head 212 are preferably arranged so as to be movable relative to each other, in particular by means of the at least one cleaning drive 157 in and / or counter to a cleaning direction G. Preferably, the at least one carrier 154 and the at least one print head 212; 412, in particular by means of the at least one cleaning drive 157 arranged in and / or opposite to the cleaning direction G movable relative to each other, in particular for cleaning the at least one nozzle surface 232. Such a relative movement is preferably made possible by the fact that the at least one cleaning module 150 with the at least one carrier 154 by means of at least one cleaning drive 157 in and / or against the

Cleaning direction G is arranged movable. Preferably, the at least one cleaning drive 157 is designed as at least one belt drive 157. Alternatively or additionally, the at least one cleaning drive is designed as at least one spindle drive 157. The at least one cleaning drive 157 preferably has at least one servomotor. The cleaning direction G is preferably oriented parallel to the at least one nozzle surface 232 of the at least one print head 212. The cleaning direction G is preferably orthogonal to one provided for the printing substrate 02

Transport direction B oriented. Preferably, the cleaning direction G is oriented parallel to the axial direction A. Preferably, the cleaning direction deviates from a horizontal direction by at most 30 ° and more preferred is the

Cleaning direction G aligned horizontally.

In particular, a plurality of nozzle surfaces 232 of the at least one printhead 212 and If it is preferable to be able to simultaneously clean a plurality of nozzle surfaces 232 of adjacent print heads 212, the at least one cleaning device 222 preferably has a plurality of cleaning modules 150. Additionally preferably, additionally or alternatively, at least one cleaning module 150 or each cleaning module 150 preferably has a plurality of contact elements 151, to which a separate actuating drive 152 and / or a separate lever body 153 is preferably associated. For example, this has at least one cleaning module 150 in the printing material 02

provided transport direction B a plurality of contact elements 151 in a row, which are additionally arranged offset in the axial direction A and / or the cleaning direction G partially offset from each other, for example, for reasons of space and / or because the print heads 212 are arranged offset even correspondingly. Preferably, a total number of contact elements 151 of the at least one cleaning module 150 corresponds to a total number of print heads 212 or rows of print heads 212 arranged in succession in the transport direction B provided for the printing substrate 02.

A plurality of print heads 212 arranged one behind the other in the axial direction A and / or the cleaning direction G is preferably cleaned by means of a common contact element 151. Depending on whether the Anstellrichtung E relative to the nozzle surfaces 232 of these successively arranged printheads 212 are the at least one cleaning module 150 and in particular the respective contact element 151 next components of the printheads 212 or not, the Anstellantrieb 152 for multiple printheads 212 in a same position When moving the respective contact element 151 from one nozzle surface 232 to the next, it is also necessary to actively leave the contact element 151 from the one nozzle surface 232 and to set it after the next nozzle surface 232. Therefore, in each printhead 212, the nozzle surface 232 is preferably the component of the respective printhead 212 which is disposed closest to the at least one cleaning module 150, and preferably to the printing substrate 02 in the printing operation. Usually, a single activation of contact elements 151 is not necessary, but a cleaning process usually affects all print heads 212 of the corresponding printing unit 21 1. Therefore, preferably, the plurality of contact elements 151 together with the at least one carrier 154 in and / or opposite to

Cleaning direction G arranged movable, in particular relative to the at least one print head 212. More preferably, the plurality of actuators 152 via at least one, and preferably exactly one common supply line,

in particular pneumatic supply line can be activated simultaneously. Alternatively, however, it is also conceivable to be able to make each contact element 151 individually, for example by each Anstellantrieb 152 is formed individually activated. Regardless of the common or separate activatability of the adjusting drives 152, in a direction orthogonal to the cleaning direction G, adjacent actuating drives 152 preferably have adjusting directions E which differ from each other by preferably at least 2 ° and preferably at most 10 °. As a result, the adjustment directions E are adapted to the orientations of the nozzle surfaces 232 of adjacent print heads 212, if, for example, they are arranged around the central cylinder 201 as described.

The at least one collecting device 161 preferably has at least one bottom 176, at least one side wall 177 and preferably at least one, more preferably at least two lateral shields 178. The side shields 178 are preferably used to shield components that should not possibly come into contact with cleaning agent and / or coating agent, for example, the cleaning drive 157. The at least one cleaning drive 157 is preferably disposed within the at least one collecting device 161 and thereby, for example against

mechanical damage protected. Preferably, the at least one

Catching device 161 in the cleaning direction G to a dimension which is greater than the working range of the at least one nozzle bar 213. Thus, in particular within the at least one collecting device 161 enough space for at least one maintenance position and / or at least a basic position of the at least one Cleaning module 150. In this area is preferably one which at least one

Tray 161 upwardly delimiting cover 173 arranged.

The at least one cleaning module 150 preferably has at least one possibility of applying a cleaning agent to the at least one nozzle surface of at least one print head 212 and removing it again. Alternatively or preferably additionally in addition to the at least one contact element 151, at least one non-contact variant is preferably provided to remove in particular the cleaning agent and / or impurities such as coating agent. The at least one cleaning module 150 preferably has at least one first aligned and / or alignable, in particular, with its discharge opening 166 on the at least one print head 212

Dispenser 158 for cleaning agents on. Preferably, the at least one cleaning module 150 has at least one on the at least one print head 212; 412 aligned and / or alignable gas outlet nozzle 159. The at least one first dispensing device 158 is preferably designed as at least one spray nozzle 158. A spray cone of the at least one first spray nozzle 158 has, for example, an opening angle between 80 ° and 60 ° and preferably between 100 ° and 140 °.

Preferably, at least one first dispensing opening 166, in particular first spray opening 166 of the at least one first dispensing device 158, is arranged to face the at least one outlet opening 162 of the at least one gas outlet nozzle 159 in one direction with at least one component. The cleaning agent is preferably designed as at least partially liquid cleaning agent.

The at least one gas outlet nozzle 159 is preferably designed as at least one gas meter 159, in particular as at least one air meter 159. A gas meter 159 is preferably a gas outlet nozzle 159, the outlet opening 162 or entirety of outlet openings 162 in a first longitudinal direction of the outlet opening 162 designated first direction substantially, for example at least ten times, preferably at least fifty times greater than in one to the first direction orthogonal, referred to as the transverse direction of the outlet opening 162 second direction. The at least one outlet opening 162 of the at least one gas outlet nozzle 159 has in its longitudinal direction for example a dimension of at least 2 cm (two centimeters), more preferably at least 5 cm (five centimeters) and even more preferably at least 10 cm (ten centimeters). The at least one outlet opening 162 of the at least one gas outlet nozzle 159 has in its transverse direction, for example, a dimension of between 0.01 mm and 1 mm, more preferably between 0.1 mm and 0.9 mm and even more preferably between 0.5 mm and 0 , 8 mm up. By the gas meter 159, in particular air knife 159 is a gas flow, in particular

Air flow generated, which is preferably laminar and similar, for example, a blade. The gas stream extends substantially while maintaining its dimensions orthogonal to the flow direction, for example, even up to a distance of several centimeters from the outlet opening.

Preferably, the at least one outlet opening 162 of the at least one

Gas outlet nozzle 159 connected to at least one supply line 174. One

The flow cross-section of the at least one outlet opening 162 of the at least one gas outlet nozzle 159 is preferably smaller than a flow cross-section of the feed line 174. For example, a gas or gas mixture, in particular air, is supplied to the at least one feed line 174 by means of at least one blower. The fan in the supply line 174 generates, for example, a pressure of less than 6 bar. Preferably, at least one in particular convexly curved guide surface 167 is arranged, further preferably in an exit direction directly to the at least one outlet opening 162 of the at least one gas outlet nozzle 159. Preferably, a straight-line connection of one of the at least one outlet opening 162 of the at least one

Gas outlet nozzle 159 facing the end of the at least one curved Leifläche 167 with an at least one outlet opening 162 facing away from this end of at least one guide surface 167 in a direction having at least one component, based on the cleaning direction G of this at least one Gas outlet nozzle 159 to the at least one first dispenser 158 has. A distance of the at least one guide surface 167 from the at least one nozzle surface is preferably at least 2 mm at all times. Preferably, the at least one baffle 167 is associated with a plurality of nozzle surfaces 232 of different, non-parallel print heads 212, and therefore the distance from print head 212 to print head 212 varies.

By means of this at least one curved guide surface 167, a deflection of the exiting gas flow is preferably effected along the at least one curved guide surface 167. This diversion is also known as the Coanda effect. As a result, in particular, a flow direction of the gas flow along the at least one nozzle surface 232 of the at least one print head 212; 412, more preferably one nearly or actually parallel to the at least one nozzle surface 232

Flow direction of the gas flow. The at least one guide surface 167 has

For example, a radius of curvature of preferably between 5 mm and 30 mm over an angular range of preferably between 20 ° and 100 ° and more preferably between 85 ° and 95 °. As a result, a corresponding gas flow can be almost or completely parallel to this at least one nozzle surface 232 of the print head 212; 412 and thereby particularly close to the at least one nozzle surface 232 of the print head 212; 412, in particular because no component directing the flow of gas between the gas flow and the at least one nozzle surface 232 of the print head 212; 412 is necessary. One of the at least one outlet opening 162 of the at least one gas outlet nozzle 159 facing the end of the at least one guide surface 167 preferably has a tangent surface whose surface normal an angle of preferably between 70 ° and 1 10 ° with a surface normal of at least one

Nozzle surface 232 of the at least one printhead 212 has. One of the at least one outlet opening 162 of the at least one gas outlet nozzle 159 facing away from the end of the at least one guide surface 167 preferably has a tangent surface, whose

Surface normal an angle of at most 20 ° with the surface normal of at least a nozzle surface 232 of the at least one printhead 212; 412 has.

An effective exit direction of the at least one gas outlet nozzle 159 is preferably a direction in which the at least one gas flow moves freely. When the at least one curved guide surface 167 is arranged, this effective exit direction is the direction in which the gas flow deflected by the at least one guide surface 167 flows, after having moved the at least curved guide surface 167 in its direction

Movement direction has left. Without the arrangement of the at least one curved guide surface 167, the effective exit direction is the at least one

Gas outlet nozzle 159 has a direction in which the at least one gas outlet nozzle 159 with its outlet opening 162 points. Preferably, the effective exit direction with at least one component parallel to the at least one nozzle surface 232 and more preferably with a lower component on the at least one print head 212; 412 too. On the other hand, the outlet opening 162 of the at least one gas outlet nozzle 159 preferably has with one component the at least one print head 212; 412, which is larger than a component with which it is aligned parallel to the at least one nozzle surface 232.

Thus, the at least one printing unit 21 1 preferably has at least one print head 212 and at least one cleaning device 222 with at least one cleaning module 150, wherein the at least one print head 212 and the at least one print head 212

Cleaning module 150 in and / or opposite to the cleaning direction G are arranged to be movable relative to each other and wherein the at least one cleaning module 150, the at least one in particular with its discharge opening 166 in one direction with at least one component on the at least one print head 212; 412 oriented and / or alignable first dispenser 158, in particular spray nozzle 158 for preferably at least partially liquid detergent and the at least one in particular with its outlet opening 162 in one direction with at least one

Component on the at least one printhead 212; 412 aligned and / or alignable gas outlet nozzle 159 has.

Preferably, the at least one first dispensing opening 166 of the at least one first dispensing device 158 and the outlet opening 162 of the at least one

Gas outlet nozzle 159 spaced apart at least in the cleaning direction G. Such a distance is preferably at least 5 cm and more preferably at least 10 cm and even more preferably at least 15 cm. This makes it possible, the at least one contact element 151 and / or the at least one lever body 153 and / or the at least one Anstellantrieb 152 between the at least one first dispensing opening 166 of the at least one first dispenser 158 and

Exit opening 162 of the at least one gas outlet nozzle 159 to arrange. Preferably, at least the at least one contact element 151 is arranged with respect to the cleaning direction G between the at least one first dispensing opening 166 of the at least one first dispensing device 158 and the at least one outlet opening 162 of the at least one gas dispensing nozzle 159. More preferably, the at least one

Lever body 153 and / or the at least one Anstellantrieb 152 with respect to the

Cleaning direction G between the at least one first discharge opening 166 of the at least one first dispenser 158 and the at least one outlet opening 162 of the at least one gas outlet nozzle 159 arranged.

An outlet direction of the at least one first dispensing device 158 with respect to the cleaning direction G preferably has a component which points towards the at least one contact element 151. An outlet direction of the at least one gas outlet nozzle 159 and / or a direction of flow deflected by the at least one curved guide surface 167 preferably comprises gas flowing out of the at least one gas outlet nozzle 159 and / or the effective outlet direction of the at least one

Gas outlet nozzle 159 with respect to the cleaning direction G to a component which faces the at least one contact element 151 to. Preferably, the at least one contact element 151 is located in a target area of the at least one dispensing device 158 and / or in a target region of the at least one gas outlet nozzle 159. Preferably, at least one upper spray shield 172 is stationary relative to the at least one

Collecting device 161 and / or arranged relative to the at least one cleaning module 150.

Preferably, the at least one first dispensing device 158 and / or the at least one gas outlet nozzle 159 on the one hand and the at least one print head 212 on the other hand, in particular by means of at least one drive, in particular by means of at least one cleaning drive 157 in and / or against the cleaning direction G relative

arranged movable relative to each other. More preferably, the at least one first dispensing device 158 and / or the at least one gas outlet nozzle 159 and / or the at least one cleaning module 150 is arranged to be movable relative to a frame 231 of the at least one printing unit 21 1 and relative to the at least one print head 212. Such a relative movement is preferably realized by an absolute movement of the at least one cleaning module 150, for example by the fact that the at least one cleaning module 150 is arranged to be movable, in particular in the cleaning direction G.

Preferably, the at least one first dispensing device 158 and the at least one gas outlet nozzle 159 on the at least one carrier 154 of the at least one

Cleaning module 150 arranged, more preferably on the same support 154 as the at least one Anstellantrieb 152 and the at least one lever body 153rd

In particular, the at least one lever body 153 and / or indirectly the at least one contact element 151 and / or the at least one first dispensing device 158 and / or the at least one gas outlet nozzle 159 and / or the at least one positioning drive 152 and / or at least one second dispensing device 163 are preferred and / or at least one lower spray shield 169; 171 arranged on the at least one and in particular on a common carrier 154 and individually or preferably together in and / or opposite to the cleaning direction G relative to the at least one print head 212 and relative to the frame 231 of the at least one printing unit 21 1 movably arranged, for example by means of at least one cleaning drive 157. Such relative movement is preferably made possible in that the at least one support 154 by means of at least one cleaning drive 157 in and / or against Cleaning direction G is arranged movable.

Preferably, the at least one printing unit 21 1 four cleaning devices 222, each having a collecting device 161 and a cleaning module 150, each cleaning module 150 four contact elements 151, four Anstellantriebe 152, four lever body 153, a first dispenser 158, a gas outlet nozzle 159 and two second dispensers 163.

The at least one cleaning module 150 preferably has at least one second dispensing device 163, for example at least partially liquid detergent, designed, for example, as a second spray nozzle 163. A spray cone of the at least one second spray nozzle 163 has, for example, an opening angle between 80 ° and 60 ° and preferably between 100 ° and 140 °. The at least one second dispensing device 163 is preferably with its, for example, as the second spray opening 164

formed second dispensing opening 164 is aligned in one direction with at least one of the at least one print head 212 facing away component and / or arranged alignable. More preferably, the at least one second

Dispensing device 163 with its second discharge opening 164, in particular spray opening 164, for example, at least partially from above on the at least one

Receiving device 161, in particular collecting tray 161 aligned and / or arranged aligning. Preferably, the at least one second delivery device 163 is arranged to be movable relative to the at least one collecting device 161 and / or arranged on the at least one carrier 154.

The at least one cleaning module 150 preferably has the at least one lower one Spray shield 169; 171 and further preferably at least a first lower spray shield 169 and at least a second lower spray shield 171 on. The at least one lower spray shield 169; 171 is preferably used to limit an area of action of the at least one second dispenser 163 in and / or opposite to the cleaning direction G. In particular, the at least one first lower spray plate 169 preferably serves to limit the area of action of the at least one second dispenser 163 in the cleaning direction G, and preferably the at least one second lower spray plate 171 serves to control the area of action of the at least one second

Delivery device 163 against the cleaning direction G to limit. In this way, other components of the at least one cleaning module 150 are discharged from the second dispenser 163 detergent and in the

Related thereto preferably fully shielded from the at least one catcher 161 rebounding detergent and / or coating agent.

Preferably, this is at least one lower spray shield 169; 171 arranged on the at least one support 154 of the at least one cleaning module 1590 and movable together with this. An ejection direction of the at least one second dispenser 163 preferably has at least one vertically downward pointing

Component and at least one horizontal opposite or preferred in the

Cleaning direction G pointing component. For example, the at least one second dispensing opening 164 is arranged aligned with respect to the cleaning direction G to the at least one gas outlet nozzle 159.

Preferably, the at least one cleaning module 150 is, for example, within the at least one cleaning device 222 relative to the at least one

Cleaning device 222 and / or the at least one cleaning module 150 movable and in different positions, in particular relative to the at least one collecting device 161 can be arranged. Preferably, one of these positions is a basic position. Preferably, the at least one cleaning module 150 is at least during a printing operation and / or at least during the at least one Cleaning module 150 is not used is arranged in the home position. Preferably, at least one of these positions is a first working position or a second one

Working position, which in each case is characterized, for example, in that individual components of the at least one cleaning module 150 are activated or deactivated at this position, for example the at least one first dispensing device 158 and / or the at least one gas outlet nozzle 159 and / or the at least one

Actuator 152 and / or the at least one second dispenser 163. Preferably, at least one such position is at least one maintenance position. The at least one maintenance position is preferably a position in which a temporary cleaning of the at least one contact element 151 is performed. Preferably, at least one maintenance position is almost or completely identical to the basic position.

In the following, a preferred embodiment of a method for cleaning the at least one nozzle surface 232 of the at least one print head 212 of the at least one printing unit 21 1 will be described. Preferably, the at least one print head 212 is first removed from a printing substrate 02 and / or from a printing material guide element 201 and / or in particular by means of the at least one positioning device 217; 218; 219; 221 arranged from at least one printing position in at least one rest position, in particular maintenance position, for example by a distance between the at least one print head 212 and provided for the substrate 02 transport path is increased. After that, at least one is preferred

Cleaning device 222 moves along the Bereitstellungswegs and between at least one nozzle of the at least one printhead 212 and one of these at least one nozzle next portion of the substrate provided for the substrate 02 transport path and / or between at least one nozzle of the at least one printhead 212 and one of these at least one nozzle next Area of a transmission body, in particular central cylinder 201 arranged. Preferably, the at least one

Cleaning device 222 for at least orthogonal to the axial direction A and / or the cleaning direction G moves. Preferably, the at least one Cleaning device 222 for at least orthogonal to the Anstellrichtung E moves. For this purpose, the at least one cleaning device 222 is preferably moved at least parallel to the transport direction B provided for the printing substrate 02. In an alternative embodiment, the at least one cleaning device 222 is moved at least parallel to the axial direction A and / or the cleaning direction G for this purpose. Preferably, the at least one cleaning device 222 along the at least one provision path from the at least one parking position of

Cleaning device 222 in the at least one use position of

Cleaning device 222 moves.

Subsequently, in a preferred embodiment, the at least one print head 212 is moved relative to the at least one cleaning device 222. For example, the at least one print head 212 is moved counter to the adjustment direction E, in particular lowered. This optionally performed movement is preferably of such a small extent that the position of the at least one print head 212 should then continue to count as the at least one rest position, in particular the maintenance position. In this way, for example, a sealing of a cleaning space can take place, which is limited, for example, at least by the at least one print head 212 and the at least one collecting device 161 and is preferably hermetically sealed.

In an activation process preferably carried out thereafter, the at least one cleaning module 150 is preferably within the at least one

Cleaning device 222 moves from its home position to the first working position, preferably in the cleaning direction G. In the first working position, a application process is preferably started.

In the application process, the at least one first dispensing device 158 of the at least one arranged on the at least one carrier 154 is preferred

Cleaning module 150 of at least one cleaning device 222 is activated, whereby the at least partially liquid cleaning agent is applied to the at least one nozzle surface 232 by means of the at least one first dispensing device 158.

Preferably, the at least one cleaning module 150 is thereby moved in the cleaning direction G. As a result, the at least one first dispensing device 158 of the at least one cleaning module 150 in the cleaning direction G is also moved relative to the at least one print head 212 and at least the at least partially liquid cleaning agent by means of the at least one first dispenser 158 preferably at least half and more preferably applied to the entire at least one nozzle surface 232. Preferably, the application process ends as soon as the at least one cleaning module has reached the second working position.

Thereafter, in at least a first removal process, the

Detergents and / or dissolved contaminants, such as

Coating agent residues and / or printing material at least partially and preferably completely removed again from the at least one nozzle surface 232. For this purpose, the at least one gas outlet nozzle 159 is preferably activated. It is thus preferred to start emitting gas or a gas mixture from the at least one gas outlet nozzle 159. The beginning of this ejection is preferably carried out while the at least one cleaning module 150 is in the second working position. It is also possible to move the at least one cleaning module 150 initially in or counter to the cleaning direction G to another position and to start there with the expulsion of the gas or gas mixture. In the first removal operation, the at least one gas outlet nozzle 159 arranged on the support 154 is in and / or preferably opposite to the cleaning direction G relative to the at least one print head 212; 412 moves. In this case, to remove at least the cleaning agent and / or the dissolved contaminants from the at least one nozzle surface 232 from at least one outlet opening 162 of the at least one gas outlet nozzle 159, at least one gas or gas mixture is preferred in one direction with at least one at least one nozzle surface 232 of the at least one printhead 212; 412 directed component ejected and preferably at least partially deflected by the at least one guide surface 167. By the gas flow that is at least one

Detergent and / or the dissolved contaminants from the at least one nozzle surface 232 away. A part of the cleaning agent can, for example, evaporate and be sucked off. The at least one cleaning agent and / or the dissolved soils are and / or are preferably at least partially entrained by the gas stream and conveyed into the at least one catcher 161 where it is collected and / or preferably flows to a drain. The first

Removal process is terminated, for example, when the at least one

Cleaning module 150 is again in or near the first working position.

Through the application process and the first removal process, the at least one nozzle surface 232 is preferably freed from contamination, wherein the direction of the gas stream preferably largely prevents the transport of cleaning agents and / or dirt and / or ink from the outside into the nozzles of the at least one print head 212 ,

Preferably, cleaning of at least one nozzle and / or nozzle opening of the at least one print head 212 is preferably carried out. For this purpose, a coating agent, in particular ink or ink, is preferably initially dispensed from at least one nozzle of the at least one print head 212 assigned to at least one nozzle surface 232 in an exit process , more preferably from all the nozzles of the at least one printhead 212. This coating agent pushes out dirt and / or cleaning agents that might have entered the nozzles. Also possibly dried coating agent within the nozzles is preferably pressed outward. A quantity of dispensed coating agent is preferably kept as low as possible, for example by only so much coating agent being dispensed that on each nozzle results in an outwardly arched drop, the however, does not detach itself from the nozzle by itself. If, however, more coating agent is dispensed so that drops detach, they are preferably collected by the collecting device 161.

A second removal process, which is also called a removal process, is then preferably carried out in order to remove the dispensed coating agent. For this purpose, the at least one positioning drive 152 is preferably first activated and / or the at least one contact element 151 fastened in particular to the at least one carrier 154 is first brought into contact with the at least one nozzle surface 232 and then in contact with the at least one nozzle surface 232 relative to the one at least one printhead 212; 412 against and / or preferably in the cleaning direction G moves. In this case, the coating agent, for example ink, discharged in the discharge process is at least partially removed from the at least one nozzle surface 232. Preferably, the movement in the cleaning direction G for several and more preferably all contact elements 151 of the at least one cleaning module 150 and more preferably the at least one cleaning device 222 simultaneously, in particular while these multiple or preferably all contact elements 151 with the respectively corresponding at least one nozzle surface 232 in contact stand. After in this way at least one nozzle surface 232 and preferably all in the cleaning direction G successively arranged nozzle surfaces 232 have been treated, the at least one contact element 151 is preferably removed again from the at least one nozzle surface 232, for example by deactivating the at least one Anstellantriebs 152 in conjunction with the Restoring force, for example, of the at least one lever body 153 and / or by reverse activation of the at least one Anstellantriebs 152nd

Preferably, the at least one cleaning module 150 is then counter to

Cleaning direction G in its basic position within the at least one

Cleaning device 222 moved back.

For example, in a rinsing process, the at least one is preferred preferably arranged on the support 154 of the at least one cleaning module 150 second dispenser 163 of the at least one cleaning module 150 in and / or opposite to the cleaning direction G relative to the at least one print head 212; 412 moves, for example, in turn, the cleaning module 150 is moved in accordance with in and / or opposite to the cleaning direction G. In this case, in particular, at least partially liquid cleaning agent from the at least one second dispensing device 163 is preferably dispensed directed onto the at least one collecting device 161, in particular in a direction pointing away from the at least one nozzle surface 232. The at least one collecting device 161 is preferably arranged at least partially below the at least one nozzle surface 232 at this point in time. By the at least one horizontally opposite or preferably in the cleaning direction G facing component of the ejection direction of the at least one second dispenser 163 and / or by a slope of a bottom surface of the at least one catcher 161 and / or by a corresponding movement of the cleaning module 150 is liquid detergent and / / or coating agent and / or dissolved contaminants along the

Receiving device 161 preferably conveyed to at least one outflow. Preferably, the at least one cleaning module 150 is then moved back counter to the cleaning direction G to its basic position within the at least one cleaning device 222. Alternatively, the rinsing process is carried out during the movement with which the at least one cleaning module 150 returns to the basic position after the second removal process and / or against the

Cleaning direction G is moved.

For example, when cleaning module 150 is arranged in the at least one maintenance position, the at least one contact element 151 is preferably subsequently cleaned. Preferably, first in a first

Partial operation of a maintenance operation, the at least one cleaning module 150 with respect to the cleaning direction G in a first maintenance position positioned such that the at least one contact element 151 is arranged in relation to the cleaning direction G between the at least one first dispensing device 158 and the at least one upper spray plate 172. Optionally and preferably, the at least one contact element 151 is moved in the adjustment direction E, for example in order to move further into a target region of the at least one first delivery device 158 and to improve a shielding. Thereafter, in a second sub-process of the maintenance process, the at least one first is preferred

Dispenser 158 activated. As a result, cleaning agent is applied to the at least one contact element 151. After a deactivation of the at least one first dispensing device 158, the at least one contact element 151 is preferably moved again counter to the setting direction E.

Thereafter, in a third sub-operation of the maintenance process, the at least one cleaning module 150 is preferably moved in the cleaning direction G, for example by at least 2 mm and at most 20 mm, preferably at least 5 mm and at most 10 mm, but in particular so far that subsequently at least a contact element 151 is arranged with respect to the cleaning direction G between the at least one gas outlet nozzle 159 and the at least one upper spray plate 172. For example, the at least one cleaning module 150 is then arranged in a second maintenance position. Optionally and preferably, the at least one contact element 151 is moved in the setting direction E, for example in order to pass further into a target region of the at least one gas outlet nozzle 159 and around one

Improve shielding. Alternatively or preferably thereafter is in a

in particular further, for example, the fourth sub-process of the maintenance process activates the at least one gas outlet nozzle 159. As a result, the at least one contact element 151 is exposed to the gas flow, in particular air flow, escaping in particular from the at least one gas outlet nozzle. Part of the

Cleaning agent can, for example, evaporate and be sucked off. The at least one cleaning agent and / or the dissolved contaminants will and / or become however, preferably at least partially entrained in the gas stream and conveyed into the at least one catcher 161 where it is collected and / or preferably flows to a drain. After deactivating the at least one

Gas outlet nozzle 159, the at least one contact element 151 is preferably moved back against the Anstellrichtung E. Thereafter, the at least one cleaning module 150 is preferred again against the cleaning direction G in the first

Maintenance item or home position moves.

Preferably, an operator can influence which processes of the method are carried out and which are not and whether, if appropriate, individual operations are to be carried out. The maintenance process is preferably performed in each case.

Preferably, the at least one first dispensing device 158 and / or the at least one contact element 151 and / or the at least one gas outlet nozzle 159 and / or the at least one carrier 154 and / or the at least one cleaning module 150 are altogether in the at least one, in particular at least the first Maintenance position with respect to the cleaning direction G of the at least one print head 212

spaced apart. Preferably, the at least one cleaning module 150 is covered in the at least one maintenance position with respect to the setting direction E of the at least one cover 173, for example, to be protected against drying and / or contamination and / or damage.

After the printing substrate 02 has passed the at least one first printing unit 200, the printing material web 02 is transported further along its transport path and preferably fed to the at least one first dryer 301 of the at least one dryer unit 300. The at least one first dryer 301 is preferably as a

Flow dryer 301 and / or radiation dryer 301 and / or hot air dryer 301 and / or infrared radiation dryer 301 formed. Along the transport path of the printing material web 02, at least one second printing unit 400 is preferably arranged. The transport path of the printing material web 02 through the at least one second printing unit 400 is analogous to the transport path through the at least one first printing unit 200. Within the second printing unit 400 is preferably at least a second, as ink jet printing unit 41 1 or ink-jet printing unit 41 1 formed printing unit 41 1 arranged aligned with the second central cylinder 401. The at least one second printing unit 41 1 of the at least one second printing unit 400 is preferably constructed identically to the at least one first printing group 21 1 of the at least one first printing unit 200, in particular with respect to at least one nozzle bar 413, at least one printhead 412 formed as an inkjet printhead 412 and the same Arrangement in double rows, the execution and resolution of the printing process, the arrangement, alignment and control of the nozzles, the mobility and adjustability of the at least one nozzle bar 413 and the at least one printhead 412 means of at least one adjustment mechanism with a corresponding electric motor and the cleaning device 222. It is preferred at least one second printing unit 41 1 as a multi-color printing unit 41 1, in particular four-color printing unit 41 1 is formed. Regarding the transport route of

Substrate web 02, at least one second dryer 331 of the at least one dryer unit 300 is arranged after the at least one second printing unit 400. The construction of the at least one second dryer 331 preferably resembles the structure of the at least one first dryer 301.

In at least one variant of the printing press, the printing press 01 is designed as a rotary-type rotary inkjet printing machine 01 and is at least one

Transmission body with the at least one first pressure central cylinder 201 forming a transmission gap. Then, preferably, the at least one print head 212 is aligned with the at least one transfer body. The central pressure cylinder 201 is preferably designed as a counter-pressure cylinder in this case. The at least one first central pressure cylinder 201 is preferably a motor-driven rotary body 201 serving to support a printing material web 02 in a first transfer region, in particular a first transfer region for coating agent. The at least one second central pressure cylinder 401 is preferably a motor-driven rotary body 401 serving to support a printing material web 02 in a second transfer region, in particular a second transfer region for coating agent. Preferably, the first and / or the second transfer region is an area which is provided for a contact between printing material 02 and

Coating means, for example a target area of at least one nozzle of at least one printhead 212 arranged in a printing position and / or at least one working area of at least one printhead 212 arranged in a printing position and / or an entire working area of at least one nozzle bar 213 and / or a gap which differs from the one respective central pressure cylinders 201; 401 is formed with an optionally arranged transfer body.

LIST OF REFERENCE NUMBERS

01 Printing Machine, Inkjet Printing Machine, Rolling Printing Machine, Rolling Inkjet Printing Machine, Rotary Printing Machine, Web Rolling Rotary Printing Machine, Rolling Rotary Inkjet Printing Machine

02 substrate, substrate web, paper web, textile web, film, plastic film, metal foil

100 substrate source, roll-off device, reel splicer

101 substrate roll

1 1 1 rotation axis (101, 103)

150 cleaning module (222)

151 Contact element, wiper, puller, wiper blade

152 Actuator

153 lever body, spring plate, wiper carrier, return element

154 carriers

155 -

156 Guide element, screw

157 Cleaning drive, belt drive, spindle drive

158 dispenser, spray nozzle, first

159 Gas outlet nozzle, gas meter, air knife

160 -

161 Collecting device, drip tray

162 outlet opening (159)

163 dispenser, spray nozzle, second

164 discharge opening, spray opening, second (163)

165 -

166 discharge opening, spray opening, first (158) baffle

cleaning guide

Spray shield, lower, first

- Spray shield, lower, second

Spray shield, upper

cover

supply

- Ground

Side wall

Shield printing unit, first

Printing material guide, central pressure cylinder, central cylinder, first;

body of revolution

- Roller, guide roller

Gap (201; 203)

- Cylinder, impression roller, first

Rotation axis (201)

Drive motor, electric motor, direct drive, single drive, synchronous motor impression gap, first

- Printing unit, inkjet printing unit, inkjet printing unit, multi-color printing unit, four-color printing unit, first

Printhead, inkjet printhead, first

Nozzle bar, first - - - Positioning device, first

Positioning device, second

Positioning device, third

- Positioning device, fourth

Cleaning device, maintenance device

Feeding device, guidance system

Positioning guide, rail

- Positioning drive, electric motor, hydraulic cylinder, pneumatic cylinder

- traction means, pushing means, chain, rail, rack

feed drive

- frame (200, 400)

Nozzle surface, surface (212) Dryer unit

Dryer, infrared radiation dryer, radiation dryer, flow dryer, UV radiation dryer, hot air dryer, first

Dryer, infrared radiation dryer, flow dryer, radiation dryer, hot air dryer, UV radiation dryer, second printing unit, second

Printing material guide, central pressure cylinder, central cylinder, second;

body of revolution 407 axis of rotation (401)

408 Drive motor, direct drive, electric motor, single drive, synchronous motor

409 -

410 -

41 1 printing unit, inkjet printing unit, inkjet printing unit, multi-color printing unit,

Four-color printing unit, second

412 printhead, inkjet printhead, second

413 nozzle bars, second

500 post-processing device, folding device, take-up device,

Bow trimmer, planned delivery

A direction, axial

B Transport direction

E setting direction

F compensation direction

G cleaning direction

Claims

claims

1 . Printing unit (21 1, 41 1), wherein the printing unit (21 1; 41 1) at least one printhead (212; 412) and at least one cleaning device (222) with at least one cleaning module (150) and wherein the at least one printhead (212 412) and the at least one cleaning module (150) are arranged to be movable relative to one another in and / or opposite to a cleaning direction (G) and wherein the at least one cleaning module (150) has at least one contact element (151) which is secured by means of at least one positioning drive (152 ) is contactable with at least one nozzle surface (232) of the at least one print head (212; 412), characterized in that the at least one cleaning module (150) at least one on the at least one print head (212; 412) and on the at least one Contact element (151) oriented and / or alignable first dispensing means (158) for cleaning agent and / or that the at least one cleaning module (150) at least one on the lower a printhead

(212; 412) and on the at least one contact element (151) aligned and / or alignable gas outlet nozzle (159).

2. Printing unit according to claim 1, characterized in that the at least one contact element (151) with respect to the cleaning direction (G) between the at least one first dispensing means (158) and an outlet opening (162) of the at least one gas outlet nozzle (159) is arranged.

3. Printing unit according to claim 1 or 2, characterized in that the at least one first discharge means (158) and an outlet opening (162) of the at least one gas outlet nozzle (159) at least in the cleaning direction (G) are arranged spaced from each other.

4. Printing unit according to claim 1 or 2 or 3, characterized in that the at least one first dispensing device (158) on the one hand and the at least one print head (212; 412) on the other hand are arranged so as to be movable relative to one another.

5. Printing unit according to claim 1 or 2 or 3 or 4, characterized in that the at least one gas outlet nozzle (159) on the one hand and the at least one print head (212; 412) on the other hand are arranged relative to each other movable.

6. Printing unit according to claim 1 or 2 or 3 or 4 or 5, characterized in that the printing unit (201; 401) has at least one collecting device (161).

7. Printing unit according to claim 1 or 2 or 3 or 4 or 5 or 6, characterized

in that the at least one cleaning module (150) has at least one second cleaning agent dispenser (163), which is provided with its detergent

Dispensing opening (164) of the at least one print head (212; 412) facing away aligned and / or arranged alignable.

8. Printing unit according to claims 6 and 7, characterized in that the

at least one second dispensing device (163) with its dispensing opening (164) aligned with the at least one collecting device (161) and / or aligned.

9. Printing unit according to claims 6 and 7 or claim 8, characterized

in that the at least one second dispensing device (163) is arranged to be movable relative to the at least one collecting device (161).

10. Printing unit according to claims 6 and 7 or according to claim 8 or after

Claim 9, characterized in that at least one upper spray shield (172) is arranged stationary relative to the at least one collecting device (161).

1 1. Printing unit according to claim 1 or 2 or 3 or 4 or 5 or 6 or 7 or 8 or 9 or 10, characterized in that the at least one cleaning module (150) at least one carrier (154) and together with this by means of at least a cleaning drive (157) in and / or against one

Cleaning direction (G) is arranged relative to the at least one print head (212; 412) movable.

12. Printing unit according to claim 1 or 2 or 3 or 4 or 5 or 6 or 7 or 8 or 9 or 10 or 1 1, characterized in that the at least one

Contact element (151) at a first location of at least one lever body (153) on this at least one lever body (153) is arranged and that the at least one lever body (153) at a second location this at least one

Lever body (153) is mounted on at least one carrier (154) and that the at least one Anstellantrieb (152) at least temporarily at a third location of the at least one lever body (153) with this at least one lever body (153) is in contact and / or brought is.

13. Printing unit according to claim 12, characterized in that along the

at least one lever body (153), the third location between the first location and the second location is arranged.

14. Printing unit according to claim 12 or 13, characterized in that the

at least one lever body (153) and / or the at least one adjusting drive (152) with respect to the cleaning direction (G) between at least one first

Dispensing opening (166) of the at least one first dispensing means (158) and at least one outlet opening (162) of the at least one gas outlet nozzle (159) is arranged.

15. Printing unit according to claim 12 or 13 or 14 or 15, characterized in that the at least one lever body (153) is elastic.

16. Printing unit according to claim 12 or 13 or 14 or 15, characterized in that a dimension of the at least one lever body (153) in one

Anstellrichtung (E) is less than each dimension of the at least one

Lever body (153) in each orthogonal to the Anstellrichtung (E) direction.

17. Printing unit according to claim 12 or 13 or 14 or 15 or 16, characterized

characterized in that the at least one lever body (153) with respect to the

Adjustment direction (E) between the at least one print head (212) and the at least one Anstellantrieb (152) is arranged.

18. Printing unit according to claim 12 or 13 or 14 or 15 or 16 or 17, characterized in that in addition to the at least one Anstellantrieb (152) and the at least one lever body (153) at least one at least temporarily with the at least one lever body (153) and / or the at least one contact element

(151) is arranged in contact guide element (156) through which the setting direction (E) of a Anstellwegs the at least one contact element (151) is predetermined.

19. Printing unit according to claim 12 or 13 or 14 or 15 or 16 or 17 or 18, characterized in that the at least one lever body (153) as a return element (153) is formed, at least when activated Anstellantrieb

(152) a force acting counter to the adjustment direction (E) is arranged to exert a force on the at least one positioning drive (152).

20. Printing unit according to claim 12 or 13 or 14 or 15 or 16 or 17 or 18 or 19, characterized in that the at least one cleaning module (150) has a plurality of contact elements (151), each having its own Anstellantrieb (152) and a separate lever body (153) is assigned.

21. Printing unit according to claim 20, characterized in that the plurality of Anstellantrieben (152) via at least one common supply line is activated simultaneously.

22. Printing unit according to claim 20 or 21, characterized in that the plurality of contact elements (151) together with the at least one carrier (154) in and / or opposite to the cleaning direction (G) is arranged to be movable.

23. A printing unit according to claim 1 1 or 12 or 13 or 14 or 15 or 16 or 17 or 18 or 19 or 20 or 21 or 22, characterized in that the at least one first dispenser (158) on the at least one carrier (154) is arranged.

24. Printing unit according to claim 1 1 or 12 or 13 or 14 or 15 or 16 or 17 or 18 or 19 or 20 or 21 or 22 or 23, characterized in that the at least one contact element (151) on the at least one carrier (154 ) is arranged.

25. Printing unit according to claim 1 1 or 12 or 13 or 14 or 15 or 16 or 17 or 18 or 19 or 20 or 21 or 22 or 23 or 24, characterized in that the at least one gas outlet nozzle (159) on the at least one carrier (154) is arranged.

26. Printing unit according to claim 1 or 2 or 3 or 4 or 5 or 6 or 7 or 8 or 9 or 10 or 1 1 or 12 or 13 or 14 or 15 or 16 or 17 or 18 or 19 or 20 or 21 or 22 or 23 or 24 or 25, characterized in that the at least one first dispensing device (158) as at least a first Spray nozzle (158) is formed.

27. Printing unit according to claim 1 or 2 or 3 or 4 or 5 or 6 or 7 or 8 or 9 or 10 or 1 1 or 12 or 13 or 14 or 15 or 16 or 17 or 18 or 19 or 20 or 21 or 22 or 23 or 24 or 25 or 26, characterized in that the at least one gas outlet nozzle (159) as at least one gas meter (159) is formed.

28. Printing unit according to claim 1 or 2 or 3 or 4 or 5 or 6 or 7 or 8 or 9 or 10 or 1 1 or 12 or 13 or 14 or 15 or 16 or 17 or 18 or 19 or 20 or 21 or 22 or 23 or 24 or 25 or 26 or 27, characterized in that at least one curved guide surface (167) in a

Exit direction of the at least one gas outlet nozzle (159) to at least one outlet opening (162) of the at least one gas outlet nozzle (159) is subsequently arranged.

29. Printing unit according to claim 1 or 2 or 3 or 4 or 5 or 6 or 7 or 8 or 9 or 10 or 1 1 or 12 or 13 or 14 or 15 or 16 or 17 or 18 or 19 or 20 or 21 or 22 or 23 or 24 or 25 or 26 or 27 or 28, characterized in that a plurality of print heads (212; 412) in the cleaning direction (G) are arranged one behind the other.

30. Printing unit according to claim 1 or 2 or 3 or 4 or 5 or 6 or 7 or 8 or 9 or 10 or 1 1 or 12 or 13 or 14 or 15 or 16 or 17 or 18 or 19 or 20 or 21 or 22 or 23 or 24 or 25 or 26 or 27 or 28 or 29, characterized in that the at least one print head (212; 412) is designed as a printhead (212; 412) fixedly arranged in a printing operation.

31. Printing unit according to claim 1 or 2 or 3 or 4 or 5 or 6 or 7 or 8 or 9 or 10 or 1 1 or 12 or 13 or 14 or 15 or 16 or 17 or 18 or 19 or 20 or 21 or 22 or 23 or 24 or 25 or 26 or 27 or 28 or 29 or 30, characterized in that the at least one cleaning module (150) is movably arranged.

32. Printing unit according to claim 1 or 2 or 3 or 4 or 5 or 6 or 7 or 8 or 9 or 10 or 1 1 or 12 or 13 or 14 or 15 or 16 or 17 or 18 or 19 or 20 or 21 or 22 or 23 or 24 or 25 or 26 or 27 or 28 or 29 or 30 or 31, characterized in that a discharge opening of the at least one first discharge device (158) with at least one component on at least one outlet opening (162) of the at least one gas outlet nozzle (159) to assign.

33. Printing unit according to claim 1 1 or 12 or 13 or 14 or 15 or 16 or 17 or 18 or 19 or 20 or 21 or 22 or 23 or 24 or 25 or 26 or 27 or 28 or 29 or 30 or 31 or 32, characterized in that the at least one support (154) is movably arranged in and / or counter to the cleaning direction (G) by means of the at least one cleaning drive (157).

34. Printing unit according to claim 1 or 2 or 3 or 4 or 5 or 6 or 7 or 8 or 9 or 10 or 1 1 or 12 or 13 or 14 or 15 or 16 or 17 or 18 or 19 or 20 or 21 or 22 or 23 or 24 or 25 or 26 or 27 or 28 or 29 or 30 or 31 or 32 or 33, characterized in that the

Cleaning direction (G) orthogonal to one for a substrate (02)

provided transport direction (B) is oriented.

35. Printing unit according to claim 1 or 2 or 3 or 4 or 5 or 6 or 7 or 8 or 9 or 10 or 1 1 or 12 or 13 or 14 or 15 or 16 or 17 or 18 or 19 or 20 or 21 or 22 or 23 or 24 or 25 or 26 or 27 or 28 or 29 or 30 or 31 or 32 or 33 or 34, characterized in that the cleaning direction (G) is oriented parallel to the nozzle surface (232).

36. Printing unit according to claim 1 or 2 or 3 or 4 or 5 or 6 or 7 or 8 or 9 or 10 or 1 1 or 12 or 13 or 14 or 15 or 16 or 17 or 18 or 19 or 20 or 21 or 22 or 23 or 24 or 25 or 26 or 27 or 28 or 29 or 30 or 31 or 32 or 33 or 34 or 35, characterized in that the at least one contact element (151) by means of at least one

Anstellantriebs (152) in and / or against a Anstellrichtung (E) on the at least one nozzle surface (232) and / or of the at least one

Nozzle surface (232) is movable away.

37. Printing unit according to claim 1 or 2 or 3 or 4 or 5 or 6 or 7 or 8 or 9 or 10 or 1 1 or 12 or 13 or 14 or 15 or 16 or 17 or 18 or 19 or 20 or 21 or 22 or 23 or 24 or 25 or 26 or 27 or 28 or 29 or 30 or 31 or 32 or 33 or 34 or 35 or 36, characterized in that the at least one contact element (151) as at least one wiper (151) is formed.

38. Method for cleaning at least one nozzle surface (232) of at least one

Printhead (212; 412) of a printing unit (21 1; 41 1), wherein in one

Application process at least a first dispensing device (158) of at least one cleaning module (150) in a cleaning direction (G) relative to the at least one print head (212; 412) is moved and at least one cleaning agent by means of the at least one dispenser (158) on the at least one Nozzle surface (232) is applied and wherein thereafter in a first

Removal process at least one gas outlet nozzle (159) in and / or opposite to the cleaning direction (G) relative to the at least one print head (212; 412) is moved and at least one outlet opening (162) of at least a gas outlet nozzle (159) at least one gas or gas mixture is ejected onto the at least one nozzle surface (232) of the at least one print head (212; 412), and then at least one contact element (151) with the at least one nozzle surface (232) is removed in a peeling operation. is moved in contact relative to the at least one print head (212; 412) in and / or opposite to the cleaning direction (G).

39. The method according to claim 38, characterized in that thereafter in a

Maintenance process, a cleaning of the at least one contact element (151) is made and that in a partial operation of the

Maintenance process, the at least one first dispensing device (158) activated and thereby cleaning agent is applied to the at least one contact element (151) and / or activated in a partial operation of the maintenance process, the at least one gas outlet nozzle (159) and thereby the at least one contact element (151) an exiting Gas stream is exposed.

40. The method according to claim 39, characterized in that first in a first sub-operation of the maintenance process, the at least one

Cleaning module (150) with respect to the cleaning direction (G) is positioned such that the at least one contact element (151) in the cleaning direction (G) between the at least one first dispenser (158) and an upper spray shield (172) is arranged.

41. The method according to claim 39 or 40, characterized in that thereafter in a further sub-operation of the maintenance process, the at least one cleaning module (150) in the cleaning direction (G) is moved so far that subsequently the at least one contact element (151) with respect

Cleaning direction (G) between the at least one gas outlet nozzle (159) and the upper spray shield (172) is arranged.

42. The method according to claim 38 or 39 or 40 or 41, characterized in that in a rinsing process, at least one second dispensing device (163) of the at least one cleaning module (150) in and / or against

Cleaning direction (G) relative to the at least one print head (212; 412) is moved while cleaning agent from the at least one second

Dispensing device (163) directed to a collecting device (161) is discharged.

43. The method of claim 38 or 39 or 40 or 41 or 42, characterized

characterized in that the at least one printhead (212; 412) is located in front of the

Application process is moved linearly from a print position to a rest position.

44. The method of claim 38 or 39 or 40 or 41 or 42 or 43, characterized in that prior to application of the cleaning agent on the at least one contact element (151), the at least one contact element (151) in a Anstellrichtung (E) is moved.

45. The method of claim 38 or 39 or 40 or 41 or 42 or 43 or 44, characterized in that after deactivation of the at least one first dispensing device (158), the at least one contact element (151) is again moved against the Anstellrichtung (E) ,

46. The method of claim 38 or 39 or 40 or 41 or 42 or 43 or 44 or 45, characterized in that before activating the at least one

Gas outlet nozzle (159) and thus before the at least one contact element (151) is exposed to the exiting gas stream, the at least one contact element (151) in the direction of adjustment (E) is moved.

47. The method of claim 38 or 39 or 40 or 41 or 42 or 43 or 44 or 45 or 46, characterized in that after deactivation of the at least one gas outlet nozzle (159), the at least one contact element (151) again against the Anstellrichtung (E ) is moved.

48. The method of claim 38 or 39 or 40 or 41 or 42 or 43 or 44 or 45 or 46 or 47, characterized in that the at least one first dispenser (158) on a support (154) of the at least one

Cleaning module (150) is arranged and that the at least one

Gas outlet nozzle (159) on the support (154) is arranged and that the at least one contact element (151) on the support (154) is arranged.

49. The method according to claim 38 or 39 or 40 or 41 or 42 or 43 or 44 or 45 or 46 or 47 or 48, characterized in that in the stripping process the coating agent delivered in the outlet process is at least partially separated from the at least one nozzle surface (232). Will get removed.

50. The method of claim 38 or 39 or 40 or 41 or 42 or 43 or 44 or 45 or 46 or 47 or 48 or 49, characterized in that on the at least one nozzle surface (232) impinges, from the at least one

Gas outlet nozzle (159) originating gas stream when impinging on the at least one nozzle surface (232) has a central direction whose parallel to the at least one nozzle surface (232) oriented component is greater than its orthogonal to the at least one nozzle surface (232) oriented component.

51. The method of claim 38 or 39 or 40 or 41 or 42 or 43 or 44 or 45 or 46 or 47 or 48 or 49 or 50, characterized in that before the stripping operation in a discharge operation, a coating agent at least one of the at least one nozzle surface (232) associated nozzle of the at least one printhead (212; 412) is discharged.