EP0378826A2 - Device for drying inks on paper - Google Patents

Device for drying inks on paper Download PDF

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Publication number
EP0378826A2
EP0378826A2 EP89123367A EP89123367A EP0378826A2 EP 0378826 A2 EP0378826 A2 EP 0378826A2 EP 89123367 A EP89123367 A EP 89123367A EP 89123367 A EP89123367 A EP 89123367A EP 0378826 A2 EP0378826 A2 EP 0378826A2
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EP
European Patent Office
Prior art keywords
radiation
radiation source
paper
color
control device
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Granted
Application number
EP89123367A
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German (de)
French (fr)
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EP0378826A3 (en
EP0378826B1 (en
Inventor
Anton Rodi
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Heidelberger Druckmaschinen AG
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Heidelberger Druckmaschinen AG
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41FPRINTING MACHINES OR PRESSES
    • B41F23/00Devices for treating the surfaces of sheets, webs, or other articles in connection with printing
    • B41F23/04Devices for treating the surfaces of sheets, webs, or other articles in connection with printing by heat drying, by cooling, by applying powders
    • B41F23/044Drying sheets, e.g. between two printing stations
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41FPRINTING MACHINES OR PRESSES
    • B41F23/00Devices for treating the surfaces of sheets, webs, or other articles in connection with printing
    • B41F23/04Devices for treating the surfaces of sheets, webs, or other articles in connection with printing by heat drying, by cooling, by applying powders
    • B41F23/0486Particular types of dryers

Definitions

  • the invention relates to a device for drying paints on paper according to the preamble of the main claim.
  • a device which is used for drying printed sheets in an offset printing machine.
  • This device contains a UV dryer, which is arranged in the vicinity of a printing cylinder, the UV rays striking the freshly printed sheets.
  • the drying or curing of the colors due to UV radiation is caused by the crosslinking of liquid binder components.
  • a disadvantage of this known device is that a considerable heat loss is generated. This leads to an undesirable local heating of printing press parts. Such local heating in the printing press on the one hand impair the functionality of the precisely fitting bearings, on the other hand there is a risk that thermal expansion of certain mechanical parts will cause registration errors in the print image.
  • the object of the invention is therefore to create a device for drying inks on paper with as little effort and space as possible while avoiding negative influences on the printing press due to heat loss and reducing the generation of harmful side effects.
  • a major advantage of the solution according to the main claim is the fact that unnecessary heating in the printing machine is avoided by using a UV excimer lamp.
  • This type of radiation sources have a relatively high efficiency.
  • the conversion of electrical discharge energy into UV radiation is very efficient.
  • the radiation source can be arranged very close to the paper surface and can also be adapted to the course of the transport path of the paper. This means that, for example, the radiation source assumes a curved shape and can therefore be arranged above a sheet transfer drum or a printing cylinder in the printing press.
  • Another advantage of using such a radiation source is that the radiation can be switched on and off with a high switching frequency. It is therefore only possible to generate radiation if the paper printed with colors is below the radiation source.
  • the radiation direction can be precisely defined by the design of the radiation source.
  • a protective gas in particular nitrogen, is introduced to improve the drying effect in the space between the radiation source and the paper surface.
  • UV inks recently used in offset printing harden when exposed to UV light. Compared to solvent-based inks, these inks have the advantage that they can be dried without unnecessarily heating the printed copy. It is therefore expedient and according to a further development of the invention to generate UV radiation of different wavelengths for different types of printing inks. This can be done by providing a plurality of radiation sources which generate UV radiation of different wavelengths.
  • a division of the radiation source into a plurality of individual radiation sources which can be switched independently of one another is possible according to a development of the invention.
  • These radiation sources can be assigned to color zones, so that it is possible, depending on the amount of color in the individual color zones, to adapt the radiation energy to this amount of paint to be dried.
  • the entire device can be integrated into a control circuit for controlling the radiation energy to be supplied.
  • This control circuit is supplied with information about color-guiding or non-color-guiding areas on the printed product via sensors.
  • the sensors are aimed at the printed product in the same way as the radiation source and detect the ink application.
  • the signals generated by the sensors are fed to the control circuit, the control circuit switching the UV radiation on the basis of these signals.
  • an electronic memory can also be provided, which stores the structure of the printed product, i. H. the distribution of color and non-color areas is saved.
  • the UV radiation is controlled by a cyclical query of the memory content with the control circuit.
  • FIG. 1 shows a sheet-fed offset printing press with a sheet feeder 2, four printing units 3, 4, 5, 6 and a sheet delivery 7.
  • the printing press is driven by an electric motor 9.
  • the printed side of the sheet points outwards, so that there is the possibility of passing the freshly applied ink past a drying device.
  • a radiation source 14, 15, 16 is therefore arranged above each transfer drum.
  • These radiation sources are excimer emitters, as are described, for example, in EPA Newsletter No. 32, March 88, pages 34-36.
  • a radiation source 14 is shown in more detail in FIG. 2.
  • a printing sheet 13 is located on the transfer drum 10. This sheet is held at its front end by means of a gripper 20 and transported to the next printing unit.
  • a radiation device 21 in the form of a segment of a circle, which has a fastening part 22.
  • the radiation device is fastened, for example, to the side walls of the printing press via this fastening part.
  • All that is required to generate UV radiation is a high-frequency alternating current, which is connected to electrodes 24, 25 via the lines 23 Radiation source is laid.
  • This high-frequency alternating current is generated by an HF generator 29.
  • a sensor 28 senses the presence of a print sheet 13 and switches the HF generator 29 on or off via the line depending on its signal.
  • a gas filling 26 is located in a closed space between these electrodes.
  • the radiation source can be designed in any way so that an optimal adaptation of this radiation source to the structure of the surface to be irradiated is possible. This means that no reflectors or optical devices are required.
  • the space between the radiation source 14 and the printed sheet 13 can thus also be kept very small.
  • This intermediate space can also be sealed by suitable seals, such as rubber lips or the like, to prevent ozone formation, it is thus possible to allow a gas, for example nitrogen, to flow into this intermediate space.
  • the radiation source 14 is a single plate that extends over the entire arc width.

Abstract

The device is proposed for drying inks on paper, especially for drying printed sheets in an offset printing machine. For this purpose, a radiation source is required which produces essentially UV radiation. This radiation source is preferably a UV excimer radiator and is arranged directly on the surface of the paper. The shape of the radiation source is adapted to the course of the transport path of the paper. Additionally, the UV radiation is controlled in dependence on the presence of ink to be dried.

Description

Die Erfindung betrifft eine Einrichtung zum Trocknen von Farben auf Papier gemäß dem Oberbegriff des Hauptanspruchs. Aus der DE-OS 36 06 005 ist eine Einrichtung bekannt, die zum Trocknen von bedruckten Bogen in einer Offsetdruckmaschine angewendet wird. Diese Einrichtung enthält einen UV-Trockner, der in der Nähe eines Druckzylinders angeordnet ist, wobei die UV-Strahlen auf die frisch bedruckten Bogen auftreffen. Das Trocknen oder Aushärten der Farben aufgrund der UV-Bestrahlung wird durch die Vernetzung flüssiger Bindemittelbestandteile bewirkt.The invention relates to a device for drying paints on paper according to the preamble of the main claim. From DE-OS 36 06 005 a device is known which is used for drying printed sheets in an offset printing machine. This device contains a UV dryer, which is arranged in the vicinity of a printing cylinder, the UV rays striking the freshly printed sheets. The drying or curing of the colors due to UV radiation is caused by the crosslinking of liquid binder components.

Ein Nachteil dieser bekannten Einrichtung besteht darin, daß eine erhebliche Verlustwärme erzeugt wird. Dies führt zu einer unerwünschten örtlichen Erwärmung auch von Druckmaschinenteilen. Solche örtlichen Erwärmungen in der Druckmaschine beeinträchtigen einerseits die Funktionsfähigkeit der paßgenauen Lagerstellen, andererseits besteht die Gefahr, daß durch Wärmedehnung bestimmter mechanischer Teile, Passerfehler im Druckbild entstehen.A disadvantage of this known device is that a considerable heat loss is generated. This leads to an undesirable local heating of printing press parts. Such local heating in the printing press on the one hand impair the functionality of the precisely fitting bearings, on the other hand there is a risk that thermal expansion of certain mechanical parts will cause registration errors in the print image.

Es ist zwar aus der DE-OS 23 23 792 eine UV-Strahlungsquelle bekannt die teilweise mit einem Kühlmantel versehen ist, dieser Kühlmantel soll zumindest einen Teil der Verlustwärme abführen, ein Nachteil dieser Einrichtung ist jedoch der hohe Platzbedarf der einzelnen mit jeweils einem Kühlmantel umgebenen UV-Strahlern. Durch diesen Kühlmantel entsteht ein sehr großer Abstand zwischen dem UV-Strahler und den zu trocknenden Farben. Dieser Abstand führt zu einer verstärkten Ozonbildung, wobei das Ozon wegen seiner schädlichen Auswirkungen abgesaugt werden muß.Although it is known from DE-OS 23 23 792 a UV radiation source which is partly provided with a cooling jacket, this cooling jacket is intended to dissipate at least part of the heat loss, but a disadvantage of this device is the high space requirement of the individual, each surrounded by a cooling jacket UV lamps. This cooling jacket creates a very large distance between the UV lamp and the inks to be dried. This distance leads to increased ozone formation, the ozone having to be sucked off because of its harmful effects.

Ein weiterer Nachteil der bekannten Einrichtung ist darin zu sehen, daß eine Anpassung der Strahlungsleistung der UV-Strahler an den tatsächlichen Bedarf nicht oder nur mit sehr hohem Aufwand durchgeführt werden kann.Another disadvantage of the known device can be seen in the fact that the radiation power of the UV emitters cannot be adapted to the actual need or can only be carried out at very great expense.

Der Erfindung liegt deshalb die Aufgabe zugrunde, mit möglichst geringem Aufwand und geringem Platzbedarf eine Einrichtung zum Trocknen von Farben auf Papier zu schaffen bei gleichzeitiger Vermeidung negativer Einflüsse auf die Druckmaschine aufgrund von Verlustwärme und unter Reduzierung der Erzeugung schädlicher Nebenwirkungen.The object of the invention is therefore to create a device for drying inks on paper with as little effort and space as possible while avoiding negative influences on the printing press due to heat loss and reducing the generation of harmful side effects.

Diese Aufgabe wird ausgehend von den gattungsgemäßen Merkmalen des Hauptanspruchs durch dessen Kennzeichen gelöst.This object is achieved on the basis of the generic features of the main claim by its characteristics.

Ein wesentlicher Vorteil der Lösung gemäß dem Hauptanspruch ist darin zu sehen, daß eine unnötige Erwärmung in der Druckmaschine durch die Anwendung eines UV-Excimerstrahlers vermieden wird. Diese Art der Strahlungsquellen haben einen relativ hohen Wirkungsgrad. Die Umsetzung von elektrischer Entladungsenergie in UV-Strahlung erfolgt sehr effizient. Damit entsteht ein weiterer Vorteil, die Strahlungsquelle kann sehr nahe an der Papieroberfläche angeordnet werden und auch an den Verlauf des Transportweges des Papiers angepaßt werden. Dies bedeutet, daß beispielsweise die Strahlungsquelle eine gekrümmte Form einnimmt und damit oberhalb einer Bogenumführtrommel oder eines Druckzylinders in der Druckmaschine angeordnet werden kann.A major advantage of the solution according to the main claim is the fact that unnecessary heating in the printing machine is avoided by using a UV excimer lamp. This type of radiation sources have a relatively high efficiency. The conversion of electrical discharge energy into UV radiation is very efficient. This creates a further advantage: the radiation source can be arranged very close to the paper surface and can also be adapted to the course of the transport path of the paper. This means that, for example, the radiation source assumes a curved shape and can therefore be arranged above a sheet transfer drum or a printing cylinder in the printing press.

Ein weiterer Vorteil bei der Anwendung einer solchen Strahlungsquelle besteht darin, daß die Strahlung mit einer hohen Schaltfrequenz ein- und ausschaltbar ist. Somit besteht die Möglichkeit nur dann Strahlung zu erzeugen, wenn das mit Farben bedruckte Papier sich unterhalb der Strahlungsquelle befindet. Durch die Anordnung der Strahlungsquelle nahe der Papieroberfläche und durch das Regeln der Strahlungsquelle in Abhängigkeit von dem Erfordernis der Farbtrocknung, sowie der Wahl geeigneter Strahlungsfrequenzen, kann die Ozonbildung vollständig vermieden werden. Außerdem kann durch die konstruktive Gestaltung der Strahlungsquelle die Strahlungsrichtung genau definiert werden.Another advantage of using such a radiation source is that the radiation can be switched on and off with a high switching frequency. It is therefore only possible to generate radiation if the paper printed with colors is below the radiation source. By arranging the radiation source near the paper surface and by regulating the radiation source in Depending on the need for ink drying and the choice of suitable radiation frequencies, ozone formation can be completely avoided. In addition, the radiation direction can be precisely defined by the design of the radiation source.

In einer Weiterbildung der Erfindung wird vorgeschlagen zur Verbesserung der Trocknungswirkung in den Zwischenraum zwischen der Strahlungsquelle und der Papieroberfläche ein Schutzgas, insbesondere Stickstoff, einzuleiten.In a further development of the invention, a protective gas, in particular nitrogen, is introduced to improve the drying effect in the space between the radiation source and the paper surface.

Die im Offsetdruck neuerdings verwendeten UV-Farben härten bei Einwirkung von UV-Licht aus. Gegenüber lösungsmittelhaltigen Farben haben diese Farben den Vorteil, daß die Trocknung ohne eine unnötige Erwärmung des Druckexemplars erfolgen kann. Es ist deshalb zweckmäßig und gemäß einer Weiterbildung der Erfindung vorgesehen, bei unterschiedlichen Arten von Druckfarben UV-Strahlung unterschiedlicher Wellenlänge zu erzeugen. Dies kann dadurch erfolgen, daß mehrere Strahlungsquellen, welche UV-Strahlung unterschiedlicher Wellenlänge erzeugen, vorgesehen sind.The UV inks recently used in offset printing harden when exposed to UV light. Compared to solvent-based inks, these inks have the advantage that they can be dried without unnecessarily heating the printed copy. It is therefore expedient and according to a further development of the invention to generate UV radiation of different wavelengths for different types of printing inks. This can be done by providing a plurality of radiation sources which generate UV radiation of different wavelengths.

Es besteht aber auch die Möglichkeit durch Austausch des in einer Strahlungsquelle befindlichen Gases UV-Strahlung unterschiedlicher Wellenlänge zu erzeugen.However, there is also the possibility of generating UV radiation of different wavelengths by exchanging the gas in a radiation source.

Um die Strahlungsenergie in Bezug auf die zu trocknende Farbe noch weiter zu optimieren, ist gemäß einer Weiterbildung der Erfindung eine Aufteilung der Strahlungsquelle in mehrere einzelne, unabhängig voneinander schaltbare Strahlungsquellen möglich. Diese Strahlungsquellen können Farbzonen zugeordnet sein, damit besteht die Möglichkeit je nach Menge der Farbe in den einzelnen Farbzonen die Strahlungsenergie dieser zu trocknenden Farbmenge anzupassen.In order to further optimize the radiation energy in relation to the paint to be dried, a division of the radiation source into a plurality of individual radiation sources which can be switched independently of one another is possible according to a development of the invention. These radiation sources can be assigned to color zones, so that it is possible, depending on the amount of color in the individual color zones, to adapt the radiation energy to this amount of paint to be dried.

Die gesamte Vorrichtung kann in einen Steuerkreis zur Steuerung der zuzuführenden Strahlungsenergie eingebunden sein. Diesem Steuerkreis wird über Sensoren Information über farbführende bzw. nicht farbführende Flächen auf dem Druckprodukt zugeführt. Die Sensoren sind beispielsweise in gleicher Weise wie die Strahlungsquelle auf das Druckprodukt gerichtet und erfassen den Farbauftrag. Die von den Sensoren erzeugten Signale werden dem Steuerkreis zugeführt, wobei der Steuerkreis anhand dieser Signale die UV-Strahlung schaltet.The entire device can be integrated into a control circuit for controlling the radiation energy to be supplied. This control circuit is supplied with information about color-guiding or non-color-guiding areas on the printed product via sensors. For example, the sensors are aimed at the printed product in the same way as the radiation source and detect the ink application. The signals generated by the sensors are fed to the control circuit, the control circuit switching the UV radiation on the basis of these signals.

In einer Weiterbildung der Erfindung kann anstelle einer solchen Sensoranordnung auch ein elektronischer Speicher vorgesehen sein, welchem die Struktur des Druckprodukts, d. h. die Verteilung von farbführenden und nicht-farbführenden Flächen abgespeichert ist. Über eine zyklische Abfrage des Speicherinhaltes mit dem Steuerkreis wird die UV-Strahlung gesteuert.In a development of the invention, instead of such a sensor arrangement, an electronic memory can also be provided, which stores the structure of the printed product, i. H. the distribution of color and non-color areas is saved. The UV radiation is controlled by a cyclical query of the memory content with the control circuit.

Die Erfindung wird nachfolgend anhand eines Ausführungsbeispiels näher erläutert. Alle in den Zeichnungen und der Beschreibung erwähnten neuen Merkmale sind erfindungswesentlich auch wenn sie nicht in den Ansprüchen enthalten sind.The invention is explained in more detail below using an exemplary embodiment. All the new features mentioned in the drawings and the description are essential to the invention, even if they are not included in the claims.

Es zeigt:

  • Fig. 1 eine Bogendruckmaschine mit einer Trocknungseinrichtung
  • Fig. 2 die Anordnung einer UV-Strahlungsquelle oberhalb eines zu trocknenden Druckproduktes
It shows:
  • Fig. 1 is a sheet printing machine with a drying device
  • Fig. 2 shows the arrangement of a UV radiation source above a print product to be dried

Fig. 1 zeigt eine Bogenoffsetdruckmaschine mit einem Bogenanleger 2, vier Druckwerken 3, 4 ,5, 6 und einem Bogenausleger 7. Der Antrieb der Druckmaschine erfolgt über einen Elektromotor 9. Zwischen den einzelnen Druckwerken befinden sich jeweils Umführtrommeln 10, 11, 12, welche die Bögen von einem zum nächsten Druckwerk befördern. Während des Transports eines Druckbogens 13 durch die Umführtrommeln zeigt die bedruckte Seite des Bogens nach außen, so daß hier die Möglichkeit besteht, die frisch aufgebrachte Farbe an einer Trocknungseinrichtung vorbeizuführen. In der Figur ist daher oberhalb jeder Umführtrommel jeweils eine Strahlungsquelle 14, 15, 16 angeordnet. Diese Strahlungsquellen sind Excimerstrahler, wie sie beispielsweise in der Literaturstelle EPA Newsletter Nr. 32, März 88, Seite 34-36 beschrieben sind.1 shows a sheet-fed offset printing press with a sheet feeder 2, four printing units 3, 4, 5, 6 and a sheet delivery 7. The printing press is driven by an electric motor 9. There are transfer drums 10, 11, 12 between the individual printing units, which convey the sheets from one printing unit to the next. During the transport of a printing sheet 13 through the transfer drums, the printed side of the sheet points outwards, so that there is the possibility of passing the freshly applied ink past a drying device. In the figure, a radiation source 14, 15, 16 is therefore arranged above each transfer drum. These radiation sources are excimer emitters, as are described, for example, in EPA Newsletter No. 32, March 88, pages 34-36.

Ferner sind im Bereich eines Kettenauslegers 17 zwei weitere Strahlungsquellen 18, 19 angeordnet. Hier erfolgt eine abschließende beidseitige Trocknung der auf dem Druckprodukt aufgebrachten Farbe. Außerdem erfolgt hier die Trocknung der von dem Druckwerk 6 aufgebrachten Farbe bzw. Lackschicht. Selbstverständlich besteht auch die Möglichkeit nur im Bereich dieser Kettenauslage Strahlungsquellen anzuordnen und auf die Strahlungsquellen in den Druckwerken zu verzichten. Da jedoch nur ein geringer Raumbedarf für die Strahlungsquellen erforderlich ist, läßt sich der Einbau dieser Strahlungsquellen in den Druckwerken ohne großen Aufwand realisieren. In Fig. 2 ist eine Strahlungsquelle 14 näher dargestellt. Auf der Umführtrommel 10 befindet sich ein Druckbogen 13. Dieser wird mittels Greifer 20 an seinem Vorderende festgehalten und zu dem nächsten Druckwerk transportiert. Oberhalb der Umführtrommel 10 befindet sich eine kreissegmentförmig ausgebildete Strahlungseinrichtung 21, die ein Befestigungsteil 22 aufweist. Über dieses Befestigungsteil wird die Strahlungseinrichtung beispielsweise an den Seitenwänden der Druckmaschine befestigt. Zur Erzeugung von UV-Strahlung ist lediglich ein hochfrequenter Wechselstrom erforderlich, der über die Leitungen 23 an Elektroden 24, 25 der Strahlungsquelle gelegt ist. Dieser hochfrequente Wechselstrom wird von einem HF-Generator 29 erzeugt. Ein Sensor 28 sensiert das Vorhandensein eines Druckbogens 13 und schaltet den HF-Generator 29 über die Leitung in Abhängigkeit seines Signals ein bzw. aus. Zwischen diesen Elektroden befindet sich in einem abgeschlossenen Raum eine Gasfüllung 26. Bei Anlegen einer elektrischen Spannung erzeugt diese Gasfüllung UV-Strahlung, die unmittelbar an der Elektrode 25 in Richtung der Pfeile 27 austritt und auf die auf der Papieroberfläche befindlichen frischen Druckfarben einwirkt. Wie schon erwähnt, kann die Strahlungsquelle beliebig gestaltet sein, so daß eine optimale Anpassung dieser Strahlungsquelle an die Struktur der zu bestrahlenden Oberfläche möglich ist. Damit sind keine Reflektoren oder optische Einrichtungen erforderlich. Der Zwischenraum zwischen der Strahlungsquelle 14 und dem Druckbogen 13 kann damit auch sehr gering gehalten werden. Dieser Zwischenraum kann auch durch geeignete Abdichtungen, wie beispielsweise Gummilippen oder ähnliches, abgedichtet werden, zur Verhinderung von Ozonbildung besteht damit die Möglichkeit ein Gas, beispielsweise Stickstoff, in diesen Zwischenraum einströmen zu lassen. Die Strahlungsquelle 14 ist, wie in Fig. 2 gezeigt, eine einzige sich über die gesamte Bogenbreite erstreckende Platte. Es ist auch möglich diese in einzelne Strahlungsquellen, die sowohl längs der Zylinderachse verlaufend als auch quer zur Zylinderachse verlaufend angeordnet sind, zu unterteilen. In der Fig. 2 ist die Aufteilung der Strahlungsquelle durch die gestrichelten Linien dargestellt. Eine solche Unterteilung eröffnet die Möglichkeit, die einzelnen Strahlungsquellen unterschiedlich je nach Bedarf anzusteuern oder auch mit verschiedenen Gasfüllungen zu versehen, die unterschiedliche Wellenlängen erzeugen.Furthermore, two further radiation sources 18, 19 are arranged in the area of a chain arm 17. The ink applied to the printed product is then dried on both sides. In addition, the ink or coating layer applied by the printing unit 6 is dried here. Of course, it is also possible to arrange radiation sources only in the area of this chain delivery and to dispense with the radiation sources in the printing units. However, since only a small space requirement for the radiation sources is required, the installation of these radiation sources in the printing units can be implemented without great effort. A radiation source 14 is shown in more detail in FIG. 2. A printing sheet 13 is located on the transfer drum 10. This sheet is held at its front end by means of a gripper 20 and transported to the next printing unit. Above the transfer drum 10 there is a radiation device 21 in the form of a segment of a circle, which has a fastening part 22. The radiation device is fastened, for example, to the side walls of the printing press via this fastening part. All that is required to generate UV radiation is a high-frequency alternating current, which is connected to electrodes 24, 25 via the lines 23 Radiation source is laid. This high-frequency alternating current is generated by an HF generator 29. A sensor 28 senses the presence of a print sheet 13 and switches the HF generator 29 on or off via the line depending on its signal. A gas filling 26 is located in a closed space between these electrodes. When an electrical voltage is applied, this gas filling generates UV radiation, which emerges directly at the electrode 25 in the direction of the arrows 27 and acts on the fresh printing inks located on the paper surface. As already mentioned, the radiation source can be designed in any way so that an optimal adaptation of this radiation source to the structure of the surface to be irradiated is possible. This means that no reflectors or optical devices are required. The space between the radiation source 14 and the printed sheet 13 can thus also be kept very small. This intermediate space can also be sealed by suitable seals, such as rubber lips or the like, to prevent ozone formation, it is thus possible to allow a gas, for example nitrogen, to flow into this intermediate space. As shown in FIG. 2, the radiation source 14 is a single plate that extends over the entire arc width. It is also possible to subdivide these into individual radiation sources which are arranged both along the cylinder axis and also transversely to the cylinder axis. 2 shows the division of the radiation source by the dashed lines. Such a subdivision opens up the possibility of controlling the individual radiation sources differently as required or of providing them with different gas fillings which generate different wavelengths.

BEZUGSZEICHENLISTEREFERENCE SIGN LIST

  • 1 Druckmaschine1 printing press
  • 2 Bogenanleger2 sheet feeders
  • 3 Druckwerk3 printing unit
  • 4 Druckwerk4 printing unit
  • 5 Druckwerk5 printing unit
  • 6 Druckwerk6 printing unit
  • 7 Bogenausleger7 sheet arms
  • 9 Elektromotor9 electric motor
  • 10 Umführtrommel10 transfer drum
  • 11 Umführtrommel11 transfer drum
  • 12 Umführtrommel12 transfer drum
  • 13 Druckbogen13 printed sheets
  • 14 Strahlungsquelle14 radiation source
  • 15 Strahlungsquelle15 radiation source
  • 16 Strahlungsquelle16 radiation source
  • 17 Kettenausleger17 chain brackets
  • 18 Strahlungsquelle18 radiation source
  • 19 Strahlungsquelle19 radiation source
  • 20 Greifer20 grippers
  • 21 Strahlungseinrichtung21 radiation device
  • 22 Befestigungsteil22 fastening part
  • 23 Leitungen23 lines
  • 24 Elektrode24 electrode
  • 25 Elektrode25 electrode
  • 26 Gas26 gas
  • 27 Pfeile27 arrows
  • 28 Sensor28 sensor
  • 29 HF-Generator29 HF generator
  • 30 Leitung30 line

Claims (7)

1. Einrichtung zum Trocknen von Farben auf Papier, insbesondere zum Trocknen von bedruckten Bogen in einer Offsetdruckmaschine, mit einer Strahlungsquelle welche im wesentlichen UV-Strahlung erzeugt,
dadurch gekennzeichnet,
daß die Strahlungsquelle ein UV-Excimerstrahler ist und daß die UV-Strahlung in Abhängigkeit von dem Vorhandensein von zu trocknender Farbe schaltbar ist.
1. Device for drying colors on paper, in particular for drying printed sheets in an offset printing machine, with a radiation source which essentially generates UV radiation,
characterized by
that the radiation source is a UV excimer lamp and that the UV radiation can be switched depending on the presence of paint to be dried.
2. Einrichtung nach Anspruch 1,
dadurch gekennzeichnet,
daß diese Strahlungsquelle unmittelbar an der Papieroberfläche angeordnet ist und die Form der Strahlungsquelle dem Verlauf des Transportweges des Papiers angepaßt ist.
2. Device according to claim 1,
characterized by
that this radiation source is arranged directly on the paper surface and the shape of the radiation source is adapted to the course of the transport path of the paper.
3. Einrichtung nach Anspruch 2,
dadurch gekennzeichnet,
daß der Zwischenraum zwischen der Strahlungsquelle und der Papieroberfläche mit einem Schutzgas, insbesondere Stickstoff, zur Verhinderung von Ozonbildung gefüllt ist.
3. Device according to claim 2,
characterized by
that the space between the radiation source and the paper surface is filled with a protective gas, in particular nitrogen, to prevent ozone formation.
4. Einrichtung nach Anspruch 1, 2 oder 3,
dadurch gekennzeichnet,
daß mehrere Strahlungsquellen, welche UV-Strahlung unterschiedlicher Wellenlänge erzeugen, vorgesehen sind und die Strahlung entsprechend der zu trocknenden Farbe auswählbar ist.
4. Device according to claim 1, 2 or 3,
characterized by
that several radiation sources, which generate UV radiation of different wavelengths, are provided and the radiation can be selected according to the color to be dried.
5. Einrichtung nach einem oder mehreren der vorherigen Ansprüche,
dadurch gekennzeichnet,
daß mehrere Strahlungsquellen gleicher Wellenlänge vorgesehen sind, wobei jede Strahlungsquelle einer oder mehreren Farbzonen zugeordnet ist.
5. Device according to one or more of the preceding claims,
characterized by
that several radiation sources of the same wavelength are provided, each radiation source being assigned to one or more color zones.
6. Einrichtung nach einem oder mehreren der vorherigen Ansprüche,
dadurch gekennzeichnet,
daß eine Sensoranordnung vorgesehen ist, welche den Farbauftrag auf dem Papier erfaßt und eine Steuereinrichtung vorgesehen ist, welcher die sensierten Signale zugeführt werden und die Steuereinrichtung die Strahlung entsprechend dem Farbauftrag steuert.
6. Device according to one or more of the preceding claims,
characterized by
that a sensor arrangement is provided which detects the color application on the paper and a control device is provided to which the sensed signals are supplied and the control device controls the radiation in accordance with the color application.
7. Vorrichtung nach einem oder mehreren der vorherigen Ansprüche 1 bis 4,
dadurch gekennzeichnet,
daß ein elektronischer Speicher vorgesehen ist, in welchem die Struktur des Farbauftrages abgespeichert ist und eine Steuereinrichtung vorgesehen ist, welcher die Speicherwerte zugeführt werden und die Steuereinrichtung die Strahlung entsprechend der abgespeicherten Farbauftragsstruktur steuert.
7. The device according to one or more of the preceding claims 1 to 4,
characterized by
that an electronic memory is provided in which the structure of the paint application is stored and a control device is provided to which the stored values are supplied and the control device controls the radiation according to the stored paint application structure.
EP89123367A 1989-01-17 1989-12-18 Device for drying inks on paper Expired - Lifetime EP0378826B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3901165 1989-01-17
DE3901165A DE3901165A1 (en) 1989-01-17 1989-01-17 DEVICE FOR DRYING COLORS ON PAPER

Publications (3)

Publication Number Publication Date
EP0378826A2 true EP0378826A2 (en) 1990-07-25
EP0378826A3 EP0378826A3 (en) 1991-04-17
EP0378826B1 EP0378826B1 (en) 1996-04-10

Family

ID=6372200

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89123367A Expired - Lifetime EP0378826B1 (en) 1989-01-17 1989-12-18 Device for drying inks on paper

Country Status (3)

Country Link
EP (1) EP0378826B1 (en)
JP (1) JPH0686119B2 (en)
DE (2) DE3901165A1 (en)

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DE4342643A1 (en) * 1993-09-13 1995-03-16 Fraunhofer Ges Forschung Photochemical fixation by means of a UV radiator
WO1997004962A1 (en) * 1995-07-25 1997-02-13 Joseph Thomas Burgio Apparatus and method for drying a discontinuous or continuous substrate fed along a feed path of an offset press
DE29710251U1 (en) * 1997-06-12 1997-08-14 Roland Man Druckmasch Device for drying sheet-shaped substrates on a printing machine
EP0819521A2 (en) * 1996-07-20 1998-01-21 Heidelberger Druckmaschinen Aktiengesellschaft Rotary printing press having a device for treating the surface of sheets
US5727472A (en) * 1995-07-25 1998-03-17 Burgio; Joseph Thomas Apparatus and method for drying sheets printed on a multi-stand press
EP1199165A1 (en) * 2000-10-11 2002-04-24 MAN Roland Druckmaschinen AG Device for acting upon printing supports within a printing machine
EP1424197A1 (en) * 2002-11-26 2004-06-02 MAN Roland Druckmaschinen AG Sheet printing machine
EP1426182A1 (en) 2002-12-06 2004-06-09 MAN Roland Druckmaschinen AG Excimer radiator for the drier of a printing press
EP1428669A2 (en) * 2002-12-12 2004-06-16 Konica Minolta Holdings, Inc. Ink jet printer
EP1591246A1 (en) * 2004-04-27 2005-11-02 Heidelberger Druckmaschinen Aktiengesellschaft Apparatus for supplying radiation energy onto printing material
EP1743767A3 (en) * 2005-07-14 2010-11-10 Komori Corporation Printing/coating machine
EP2258553A1 (en) * 2009-06-05 2010-12-08 WIFAG Maschinenfabrik AG Device and method for drying paint on a printed substrate
CN102632700A (en) * 2012-04-18 2012-08-15 广东新优威印刷装备科技有限公司 Printer

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DE4010191C2 (en) * 1990-03-30 1994-10-13 Heidelberger Druckmasch Ag Emitter device for drying and / or curing ink and / or lacquer layers on print media
DE19704284A1 (en) * 1997-02-05 1998-10-01 Saechsisches Inst Fuer Die Dru Print setting system
DE10138863A1 (en) * 2001-08-08 2003-02-27 Koenig & Bauer Ag Method for manufacturing a blister pack e.g. for small product items, uses low-wax or wax-free color system
DE10234076A1 (en) * 2001-10-10 2003-04-24 Heidelberger Druckmasch Ag Device and method for supplying radiation energy to a printing material in a planographic printing press
JP2008142983A (en) * 2006-12-08 2008-06-26 Tohoku Ricoh Co Ltd Stencil printing equipment and ultraviolet fixation device
EP1992486B1 (en) * 2007-05-15 2012-10-03 Komori Corporation Liquid curing apparatus for liquid transfer device
DE102007052767A1 (en) 2007-11-06 2009-05-07 Manroland Ag Color and lacquer processing method for sheet-fed printing machine, involves protecting components of machine from UV radiation of artificial or natural light, before application of UV-color and/or UV-lacquer on printing substrate
DE102007058957A1 (en) 2007-12-07 2009-06-10 Heidelberger Druckmaschinen Ag Process for drying printed material
JP2009184221A (en) * 2008-02-06 2009-08-20 Ryobi Ltd Printing method of printing machine and printing machine
JP2009184211A (en) * 2008-02-06 2009-08-20 Ryobi Ltd Dryer for printing machine
JP2009208463A (en) * 2008-02-06 2009-09-17 Ryobi Ltd Printing method of printing machine, and printing machine
DE102008045433B4 (en) * 2008-09-02 2020-06-25 Koenig & Bauer Ag Sheet guide cylinder in a sheet processing machine, in particular printing machine, with a dryer device assigned to the sheet guide cylinder

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GB1581998A (en) * 1977-09-27 1980-12-31 Applied Photophysics Ltd Ultraviolet curing systems
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EP0089327A1 (en) * 1982-03-17 1983-09-21 Svecia Silkscreen Maskiner AB Drier intended to dry print on a material
EP0254111B1 (en) * 1986-07-22 1992-01-02 BBC Brown Boveri AG Ultraviolett radiation device

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4342643A1 (en) * 1993-09-13 1995-03-16 Fraunhofer Ges Forschung Photochemical fixation by means of a UV radiator
DE4342643C2 (en) * 1993-09-13 1999-04-29 Fraunhofer Ges Forschung Low-temperature fixation with barrier discharge in inkjet printers
WO1997004962A1 (en) * 1995-07-25 1997-02-13 Joseph Thomas Burgio Apparatus and method for drying a discontinuous or continuous substrate fed along a feed path of an offset press
US5727472A (en) * 1995-07-25 1998-03-17 Burgio; Joseph Thomas Apparatus and method for drying sheets printed on a multi-stand press
US5832833A (en) * 1995-07-25 1998-11-10 Burgio; Joseph Thomas Apparatus and method for drying a substrate printed on a multi-stand offset press
EP0819521A2 (en) * 1996-07-20 1998-01-21 Heidelberger Druckmaschinen Aktiengesellschaft Rotary printing press having a device for treating the surface of sheets
EP0819521A3 (en) * 1996-07-20 1998-09-23 Heidelberger Druckmaschinen Aktiengesellschaft Rotary printing press having a device for treating the surface of sheets
US5873309A (en) * 1996-07-20 1999-02-23 Heidelberger Druckmaschinen Aktiengesellschaft Rotary printing machine with a device for treating the surface of sheets
DE29710251U1 (en) * 1997-06-12 1997-08-14 Roland Man Druckmasch Device for drying sheet-shaped substrates on a printing machine
EP1199165A1 (en) * 2000-10-11 2002-04-24 MAN Roland Druckmaschinen AG Device for acting upon printing supports within a printing machine
EP1424197A1 (en) * 2002-11-26 2004-06-02 MAN Roland Druckmaschinen AG Sheet printing machine
EP1426182A1 (en) 2002-12-06 2004-06-09 MAN Roland Druckmaschinen AG Excimer radiator for the drier of a printing press
EP1428669A2 (en) * 2002-12-12 2004-06-16 Konica Minolta Holdings, Inc. Ink jet printer
EP1428669A3 (en) * 2002-12-12 2005-06-01 Konica Minolta Holdings, Inc. Ink jet printer
US7488065B2 (en) 2002-12-12 2009-02-10 Konica Minolta Holdings, Inc. Ink jet printer
EP1591246A1 (en) * 2004-04-27 2005-11-02 Heidelberger Druckmaschinen Aktiengesellschaft Apparatus for supplying radiation energy onto printing material
US8820236B2 (en) 2004-04-27 2014-09-02 Heidelberger Druckmaschinen Ag Device for supplying radiant energy onto a printing substrate
EP1743767A3 (en) * 2005-07-14 2010-11-10 Komori Corporation Printing/coating machine
EP2258553A1 (en) * 2009-06-05 2010-12-08 WIFAG Maschinenfabrik AG Device and method for drying paint on a printed substrate
CN102632700A (en) * 2012-04-18 2012-08-15 广东新优威印刷装备科技有限公司 Printer

Also Published As

Publication number Publication date
EP0378826A3 (en) 1991-04-17
JPH0686119B2 (en) 1994-11-02
EP0378826B1 (en) 1996-04-10
DE3901165A1 (en) 1990-08-02
JPH02229045A (en) 1990-09-11
DE58909650D1 (en) 1996-05-15

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