DE3051235C2 - Recorder for computer or office machine print-out - Google Patents

Abstract

The recording device is intended for an implement with very small dimensions, capable of operating at a very high speed. It has an electromagnetic wave generator, which can be moved by a linear motor at right angles to the transport or feed direction of a recording sheet, or strip. The output signal or power of the generator is controlled and recorded on the sheet in dependence on the control arrangement.Pref. the electromagnetic wave generator is a solid state light source. The speed at which the generator moves may be scanned by a detector, while another detector determines the displacement position of this generator. The recording device typically has several ink chambers for ejection of jets of ink droplets in response to driver signals from a special generator. The latter operates selectively. In the ink chambers may be provided a heater producing bubbles on the ink surface

Description

The invention relates to a recording device according to the Preamble of claim 1.

In DE-OS 28 43 064 is such a recording device described in which several juxtaposed Droplet generating sections in succession a laser beam are irradiated. Due to the high Energy content of laser beams at the same time extreme Small bundling can be a selective, energy rich control of individual desired nozzles under complete avoidance of undesired influence barter nozzles even then make sure if these nozzles packed very tight. With such a record tion device can thus be a very high Auflösungsver like to achieve. For sequential scanning of Droplet production sections become that of a solid state  Laser generated laser beam over a circumferential polygonal mirror and a corresponding optics. The featured However, the construction is not very compact built up.

Also in the case described in DE-OS 29 43 164 Aufzeich tion device, the ink droplets with the help a laser beam generating device generates. over the type of arrangement of the laser beam generating device and their control are this document, however no further measures can be taken.

In addition, U.S. Patent 3,177,800 discloses a record tion device, in which in a fixed support member formed a plurality of ink-fed openings are, in close proximity to those to be marked Recording material is guided along. To produce Markers are in each ink filled hole an excitable by a voltage source electrode pair provided, in whose excitation in the ink Sparking flashes, which in turn causes The ink is ejected from the opening. all Recently, this ejection does not take the form of a Single drop, but in the form of a variety irregular moderate fine droplets that are on the record precipitate material. Due to the variety of the Flashover and the ejection of the ink and controllably influencing variable parameters However, with this method, no recording Achieve points of defined shape and size, so that single a very irregular recording can be achieved can.  

Further, U.S. Patent No. 2,556,550 shows a writing device, in which a variety of arranged in a row, the entire apertures covering openings seen at a very short distance to the record be kept. The recording takes place in this case via controlled optical heating of the individual, each of the openings selectively associated ink chambers, wherein the template to be reproduced between a light source and the ink chamber assembly is moved through and while a corresponding intensity modulation of causes the individual ink chambers incident light. In translucent areas of the template learns the Ink in the then irradiated ink chambers a warming and thus one, if only relatively small Extension, which is a bulge of ink from each associated openings to the very small distance passing record carrier. When providing several opening lines, the respective Lines and their control for generating each formed differently colored color separation images be so that even multicolored records produced are. Here is everything Recently, the playback point size of a plurality of unkon trollable parameter such as not immediately controllable transition of discharged from the openings Ink that is in contact with the recording medium in of unknown size is sucked out of the openings, or the unpredictable interaction between from Depending on openings discharged droplets, so that no defined copies with high resolution can be generated.

In the recording device according to DE-AS 14 36 647 becomes a photosensitive recording medium set to which the characters to be recorded optically be projected. The projection beam has such an energy that the color particles of the Change recording medium chemically or physically. The electromagnetic radiation can in this case by a  Lasers are generated. Alternatively, the color may change Particles also on a special color carrier instead of on located on the record carrier. An ink droplet generation does not take place. The need of Use of a special record carrier be However, limits the scope of the known Recording device.

The invention is based on the object, a Aufzeich to create a device that can handle high recording speed and recording density by ge dimensions and a multicolored Auf drawing allows.

This object is called genann with in claim 1 ten characteristics solved.

Advantageous embodiments of the invention are in the Subclaims specified.

The invention will be described below with reference to embodiments with reference to the drawings described in more detail.

Show it

Fig. 1, 2 and 3 are schematic diagrams for illustrating the principle of operation of a recording head,

Fig. 4 shows a signal diagram of various driving signals,

FIGS. 5 and 6 signal diagrams of various driving signals,

Fig. 7 is a schematic view of a color recording apparatus,

FIGS. 8A and 8B are views of an embodiment of a recording head for the color recording apparatus shown in FIG. 9,

Fig. 8C a further embodiment of the recording head,

Fig. 9 is a block diagram of an execution example of a driving circuit for the recording head shown in FIG. 10C,

Fig. 10 is a perspective view of an example of the invention From guide the recording apparatus,

Fig. 11 is a cross-sectional view of a wide ren embodiment of the Aufzeich voltage device.

In Fig. 1, the principle of operation of a recording head is illustrated with laser beam control. A liquid chamber W is charged by capillary action with a recording liquid IK. Upon application of a laser beam LZP to a photo-thermal conversion element H1 arranged in a liquid chamber portion W1 having a length .DELTA.l and an outlet opening OF, the transducer element H1 heats up to a temperature higher than the vaporization point of the recording liquid in the liquid chamber portion W1. At the same time, a bubble B forms on the transducer element H1, the volume of which increases rapidly with further increase in temperature. As a result, the pressure in the liquid chamber portion W1 rises rapidly, and the recording liquid therein is rapidly moved in the direction of the outlet port OF and in the opposite direction by the formation of the bubble B in accordance with the volume increase. A part of the liquid contained in the liquid chamber W with the length l recording liquid is thus discharged through the Auslaßöff opening OF. The ejected Aufzeichzeichüs fluid forms a column of liquid, which then constricts, but in the front end portion of the liquid column the point up to this point supplied kinetic energy is included. Fer ner is in a collision of the bubble with the ceiling of the liquid chamber portion W1, the resulting collision force is deflected in the longitudinal direction, resulting in a further increase in the liquid ejection force.

When switching off the directed to the transducer element H1 Laser beam LZP begins its temperature gradually sink, causing the bubble B with a slight delay with respect to the end of the laser beam LZP begins to contract. Combined with this volume reduction of the bubble B will be from the Direction of the outlet opening OF and from the entgegenge set fluid addition direction recording liquid fed to the length section .DELTA.l. As a result, a part of the near the Outlet opening OF liquid column located again withdrawn into the liquid chamber section W1 becomes, so that due to oppositely directed Kräf te or kinetic energy shares between the front ren end portion of the liquid column and in the Near the outlet opening OF remaining part of the front End section as a tiny liquid droplet ID separates, resulting in a recording material PP moved and down there in a predetermined position suggests. The bubble B disappears on the transducer element H1 gradually by heat release. This causes the gradual decrease of the bubble B a gradual back draw the fluid meniscus IM. In this way becomes a stable surface state of the meniscus maintained during the retraction, so that Disturbances in a subsequent droplet emission ver be avoided, in case of excessive withdrawal of the meniscus due to a meniscus destroyed following air intake can occur. The position for the Blistering should be selected appropriately be, as one too close to the outlet opening OF de blistering an emission of the bladder itself from the Outlet opening result, which may be Zer disturbance of the liquid droplet ID leads, while a bubble that is too far away from the outlet  produced, no droplet emission causes. The before standing described gradual contraction of the bladder B is based on heat dissipation, vapor condensation to liquid speed, fluid supply by capillary action, etc.

The size of out of the outlet opening OF pungent liquid droplet ID depends on the para meters of the recording device, such. B. from the supplied heat energy amount, the length Δl of the heat energy receiving liquid chamber section, the Inner diameter d of the liquid chamber W, the Ab was l from the outlet opening OF to the position at the laser beam LZP impinges, etc., as well as from the physical properties of the recording liquid IK, such. B. of their specific heat, the Thermal conductivity, the thermal expansion coefficient, viscosity, surface tension, etc.

In Fig. 2, the operation of the recording liquid keitsemission (ink or ink emission) at ten times t0 to t9 is shown. The liquid interface between the ink IK and air is designated IM. Figs. 3A, 3B and 3C show an example of a laser signal E and the corresponding course of the temperature T and the associated volume of the bladder B, the times t0 to t9 correspond respectively to the stages shown in Fig. 2. The stage t0 shows the state before the start of the emission process, wherein a drive signal E is applied to the laser beam generating device at a time tp between t0 and t1. The temperature starts to increase simultaneously with the beginning of the drive signal E and exceeds the vaporization point of the ink at the stage t1 at which the bubble generation starts and the liquid menisc IM expands correspondingly beyond the outlet opening OF. In stage t2, the meniscus IM continues to expand correspondingly with the growth of the bladder B. At the stage t3 the driver signal E ends and the temperature reaches its maximum, the meniscus IM showing a further expansion. At time t4, the temperature already drops again, as shown in Fig. 3B, while the bubble B, however, in the manner shown in Fig. 3C, the maximum volume he goes so that the growth of the meniscus continues on. At time t5, the bubble B begins to contract, so that the ink IK gene according to the outlet opening OF in the ink chamber W zurückgezo gene and a constricted part Q in the liquid meniscus IM is formed. Bladder contraction continues at stage t6, where a fluid droplet ID separates from the fluid meniscus IM '. At the stage t7, the liquid droplet ID continues its flight motion, while the meniscus IM 'approaches the outlet port OF due to the continued contraction of the bubble B. In stage t8, the bubble B is almost no longer present and the meniscus IM 'is drawn into the interior of the outlet opening OF. At stage t9, the initial state is restored by capillary action-based ink supplementation.

From the description of this process is apparent Lich that the shape of the driver signal an important Factor for achieving a stable emission of the ink IK represents. In particular, bladder contraction sets one important factor for the separation of Tin pot droplet; the contraction can be passed through control the shape of the driver signal. Dar  In addition, the droplet emission rate may also exceed and the emission frequency by the shape of the Driver signal to be controlled.

FIGS. 4A, 4B and 4C show the corresponding temperature change T in the transducer element H1, in the recording liquid or in the bladder, as well as the corresponding volume change of the bladder B, for different driver signals E, respectively.

It has been found that with each of these signals a satisfactory ink droplet emission is achieved bar. The signal (a) has the particular advantage that no increased demands are placed on the driver circuit, such as the provision of a high resistance in the RC discharge circuit of the driver system. Such a signal can be used to achieve excessive retraction of the meniscus without the use of this high resistance, since the temperature drop occurs at least during the two-fold increase in temperature, as shown in Fig. 3B. By the signal (b), a preheating can be achieved before the main pulse, whereby the duration of the main pulse for the droplet emission can be reduced ver. With this signal, a rapid blistering can be achieved, which also emission and response frequency or frequency response can be improved. In addition, it can be avoided by this signal on excessive heating of the Aufzeich tion liquid based disadvantages, since the preheating takes place only during recording. The signal (c) causes post-heating in the abfal loin flank of the main pulse to achieve a slower retraction of the meniscus. By this signal, an air inlet into the liquid keitskammer after the droplet emission can be avoided even more reliable and achieve a uniform droplet emission in the next recording process. Also in this case, the bubble formed in each case is again completely disappeared to ensure the subsequent recording process, since the reheating takes place only during the recording. With the signal (d), a gradual heat dissipation to obtain a uniform droplet separation can be obtained and then prevent excessive retraction of the meniscus, without the speed of the ejected Dropl chen suffers. The signal (e) is also a very effective driver signal which can be obtained by combining the signals (b) and (d).

In each of these methods, the droplets settle Emission simply by controlling the driver signal without using an external high resistance or Like. Achieve, with a relatively slow or grad advancing bladder contraction by Wärmeablei tion, vapor condensation to liquid and capillary effective fluid intake achievable and with it on an air inlet over the outlet opening due to too rapid retraction of the liquid  meniscus-based failure of droplet emission when feeding the next pressure command pulse is avoidable. Preferably, the formation and con traction of the bladder of duration S and the amplitude L of the pulse. Under consideration of Function of a circuit arrangement with high integra tion level preferably finds the signal (a) Verwen dung. Further, the photothermal conversion element H1 account in certain cases, z. B. if the Ink itself is dyed black and is heat absorbing.  

Hereinafter, details will be given to a recording method in which tinting reproduction is achieved by exciting a semiconductor laser with pulses of different pulse shape. It has been erwie sen that when applying pulses with the same in the pulse duration, however, increasing amplitude to the same semiconductor laser emission of droplets with increasing diameter can be achieved. Also pulses with the same peak value but increasing pulse duration cause the emission of droplets with increasing diameter. These circumstances are exploited in the control methods illustrated in FIGS. 5 and 6. In FIGS. 5 (a), (b), (c) and (d), respectively, the pulse supplied to the laser, the temperature of the recording liquid, the volume of the bubble formed therein, and the recording point corresponding to the obtained droplets are shown. Diameter reproduced for different pulse amplitudes. In conjunction with an increase in the pulse amplitude L, the temperature of the recording liquid and the corresponding heat energy take higher values, which leads to the formation of a larger bubble and thus to the formation of a larger droplet. In Fig. 6, the case of a variable pulse duration S is illustrated, wherein Fig. 6 (e), (f), (g) and (h) respectively the course of the applied pulse, the temperature of the recording recording liquid, the volume of ge formed Bubble or the size of the ejected droplets illustrate Chen. The figure shows that a pulse that gives the recording liquid be a certain maximum temperature, but has a longer duration, leading to the formation of a larger bubble and thus to the formation of a larger droplet. Of course, it is also possible to form uniform droplets at high speed by a suitable control of the pulse duration S and the amplitude L. In addition, the control of the Tönungswie reproduction in dependence on the density of a record to be drawn or copied template automatically he be targeted, in the z. B. a sensor with a reference reading related signal or a signal from a coupled with a manually operable density control variable resistor is supplied to the input.

Furthermore, any density control is through direct manual adjustment of the variable resistor possible Lich.

In addition, by controlling the thermi rule of the pulse or the bubble by means of the above described heat generating device and heat Control device in a simple manner, a constant on maintaining optimal imaging conditions despite time-dependent changes in the recording liquid or changes in environmental conditions of the recorder, such as temperature or humidity ability, possible. It should also be noted that the nozzles in high density can be arranged as the front standing described photothermal transducer elements not absolutely necessary.

If this embodiment in a Mehrfar ben ink jet recording device use find is a suitable bubble control for each color required, the Steue described above tion of thermal pulses z. B. the same education shaped droplets of different colors effectively can be exploited.

The bubble control can also be used to achieve intended color matching, d. H. z. B. to achieve a reddish or bluish tone so as for controlling the density.  

Fig. 7 schematically illustrates a multicolor ink jet recording apparatus according to the present invention. Hereinafter, the use of three color liquids C, M and Y will be described as a representative example, but the invention is not limited to such a case but includes any combination of two or more colors.

The recording apparatus of FIG. 7 is color liquid containers ITC, ITM and ITY, heat-applying zones .DELTA.l, heat energy generating devices HC, HM and HY z. B. hen in the form of the above-described photoelectric transducer and nozzles OFC, OFM and OFY, each of a different colored color liquid C, M or Y are assigned. The number of heat-action zones and the nozzles can be further increased to who, but each supply path from a color liquid container to a nozzle is provided for only one of the color liquids. However, it is also possible to mix two or more color liquids in the feed line, if deemed appropriate.

The heat-action zones are in the above be described way to cause blistering in the color liquids by those of the laser beam supplied heat energy provided. The laser beam Sources are in suitable positions to produce the formation of bubbles in the in the heat-action zones be sensitive color liquids arranged.  

Here, the laser sources are dependent of multicolor input information selectively from a control unit or a central processor MPU controlled. If the recorder is the output unit with a copier or a facsimile machine Use is one of lenses, filters, photo sensor elements, etc. existing photosensor device CD for obtaining multicolor information from one Template GK provided. Will the recorder on the other hand, as an output unit or data terminal for a calculator or the like. used, the photosensor Device CD omitted, since the output signal of Calculator or the like already in the form of multi-color Infor present.

The central processor MPU comprises facilities for optional control of the laser beam sources in Ab dependence on the multicolor information, e.g. B. in the case of driving the laser beam sources with Pulse signals from clock pulse generators, shift registers, driver circuits and Synchronisiereinrich tions for determining the relative speed zwi the recording material and the recording persist.

The heat generated by the laser can turn on Fold way about the duration and amplitude of the driver pulse signal in the manner described above ge be controlled.

The recording fluids used are in relation to the control unit described above and depending on the nature of the desired Record selected appropriately, the Recording z. B. as so-called. Graphic Falschfarbenauf  drawing, so-called true color recording or from, for example, the Far ben black and red existing two-color record for documents or proofs. So is z. As the graphic recording in general for printing multicolor information of a Calculator used and can be with color fluids be made of lovely colors.

In the case of true color recording, the pros location information about three photosensors each by a red filter, green filter or blue filter to Ge Winning separated color signals obtained while the used color liquids in each case one to the color Separate filter complementary blue, red or yellow color respectively. The heat-impact zones of the recording head, this three-color liquid contains, depending on the color separation signals selectively excited by the laser beams.

He is a particularly beneficial result when the recording head is made of a substrate, a grooved plate, liquid supply block, etc. is set up, as explained in more detail below becomes.

In Fig. 8A an embodiment of the recording device in the form of a perspective view is shown in which a multi-color recording head of a substrate SS1, provided with Flüssigkeitszu guide grooves groove plate GL1, color liquid keitsbehältern ITC, ITM, ITY and liquid supply pipes IPC, IPM, IPY for supplying Farbflüssigkei C, M, Y for a multi-color recording consists. In addition, serving as a heat sink thermally conductive substrate HS and a nozzle plate OP can be provided for Bil tion of the desired nozzle.

In Fig. 8B, the positional relationship between the grooved plate and the paint liquid containers is further illustrated in Fig. 8A. The substrate SS1 be z. B. of alumina, while the groove plate GL1 consists of a glass or plastic plate with trained by a diamond micro cutter grooves MC, MM, MY for the color liquids and Flüssigkeitszu management inlets ISC, ICM, ISY. The inlets are z. B. forms by means of an electron beam method respectively according to the grooves of the same color out. The color liquid containers ITC, ITM, ITY are respectively provided with holes TSC, TSM, TSY, the positions of which correspond to the liquid supply inlets ISC, ISM, ISY, respectively. Although only one color liquid container ITY is shown in Fig. 10B, the other color liquid containers ITC and ITM for the coloring liquids C and M are arranged on the groove plate GL1 in the same manner. After this preparation, the grooved plate and the color liquid containers are integrally connected in the corresponding position. With IPY 'is a tube for eliminating bubbles when filling the color liquids in the recording head called.

Such a structure allows a simple zoom placing multiple nozzle arrangement, the nozzles for Emission of liquids of different colors with high density are arranged. At one of a lot number of dots existing multicolor image becomes all Commonly assumed that positional deviations of Points that exceed an amount of 150 to 170 microns to a significant worsening of the tint  reproducibility or color reproduction. with means of the ink jet recording according to the invention The results are extremely satisfactory in terms of image resolution and tint reproduction achieve the assets, since the nozzles in one value of 30 lines / mm exceeding density can be arranged, which is considerably above the above standing mentioned limit. The invention Recording device also has the advantage on that the nozzle arrangement with reduced thickness in an extremely compact structure can be produced.

Between the nozzle density and the density of the photo Sensor elements should have an assignment of picture elements Be taken picture element. In a three-color up drawing with a nozzle density of 36 lines / mm can therefore have a photosensor density of 12 Find lines / mm.

When using such a multi-nozzle arrangement recording in conjunction with a copyist advises or a facsimile machine has an embodiment the photosensor device CD as a linear photosensoran special advantages, since then with a single scan a high-speed record tion or high resolution.

Such a structure is also present insofar In part, as the control unit in a simple way without special delay elements, memory, etc. for Setting the timing of the driver signals can realize and the nozzle assembly in a simple Wei can be produced.  

In addition, synchronized data reading and data recording can be simultaneously performed at high speed by using a linear motor as described later in more detail when the photo sensor device CD is integrally mounted on a carriage CA in the manner shown in Fig. 10B, and the laser head LZH carries and is slidably mounted on a support bar Y2. Such an arrangement has significant advantages in terms of economic union circuit design and simplification of the construction, and thus allows the realization of an extremely small recording device.

An embodiment of the recording apparatus shown in Figs. 8A and 8B was prepared as follows.

A groove plate GL1, which by means of a Mikroschnei ders with a nozzle density of 30 lines / mm formed grooves, as well as glass color liquid Containers ITC, ITM and ITY were attached to a substrate SS1 attached to which also has an aluminum heat sink HS was attached to heat dissipation.

The color liquid containers ITC, ITM and ITY were each with blue, red and yellow ink or color filled with liquid. In this way, a record became head with a nozzle density of 30 lines / mm made a total of 1200 Nozzles or 400 nozzles for each color.

The recording head was used in conjunction with a photosensor device and a control circuit for recording with laser pulses corresponding to blue, red and yellow image signals, the respective ink or color liquid was supplied to the recording head with such a pressure that without generating heat in the ink or liquid liquid no liquid emission took place via the nozzles. Thus, at a very high recording speed, a color image was obtained showing satisfactory resolution and hue reproduction. In Fig. 8C, another embodiment of a recording head for printing the two colors black and red is illustrated, wherein a groove plate GL1 contains a black ink or color liquid and ejects via a nozzle opening OF1, while a groove plate GL2 a red ink or color liquid contains and ejects via a nozzle opening OF2. Laser heads LZH1 and LZH2 are adjusted together by a linear motor described in more detail below. For the upper and lower ink jet nozzles together a Kühlkör is provided by HS. If both inkjet nozzles are used for the same color, twice the recording speed can be achieved. This arrangement is particularly advantageous with respect to Miniaturi tion of the recording device. In the above-described recording example using the recording head shown in Figs. 8A and 8B, the image may be e.g. B. in areas that should appear in neutral gray, have a yellowish color and contain an insufficient image density throughout the image area.

In such a case, variable position resistors VRC, VRM and VRY of the control device shown in Fig. 9 were adjusted so that yellow driving pulses different from those for the blue and red colors were obtained. In this way, a well-tuned neutral gray with improved image density could be obtained.

The in the above-described Ausführungsbei The materials used in the game are as follows Table 1:

recording material Fine paper: trade name Seven Stars Format A, 28.5 kg (Hokuetsu Paper Mills, Ltd.) colored liquids Y: yellow Yellow RY (Orient Chemical) 2.0 g ethanol 80.0 g diethylene glycol 18.0 g M: Magenta red @ Red BT 3.0 g ethanol 80.0 g diethylene glycol 17.0 g C: cyan blue @ Blue RL 2.0 g ethanol 80.0 g diethylene glycol 18.0 g

The circuit arrangement of FIG. 9 comprises switching circuits CSC, CSM and CSY, each comprising a photosensor and an analog-to-digital converter, pulse generators PGC, PGM and PGY for generating driving pulses in response to the output signals of the circuits CSC, CSM and CSY, amplifiers PAC, PAM and PAY for amplifying the output signals and variable variable resistors VRC, VRM and VRY for adjusting the duration and amplitude of each pulse.

In this way, by adjusting the Stell resist the possibility of optimal laser signals and so that optimal bubbles in the according to Table 1 ver various dyes containing colorants C, M and Y to form, whereby the above-mentioned meet various demands in a simple way to let. Instead of a manual setting, the Adjustable resistors are also very easily dependent from the output signals of original reading sensors or regulated in dependence on facsimile signals become.

Fig. 10 illustrates a schematic view of an imple mentation example of the Aufzeichge rätes, while Fig. 10 shows a development of the recording device according to FIG. 10 in the form of a cross-sectional view.

In these embodiments, a linear finds motor for adjusting a solid-state laserein direction carrying carriage CA use.  

The linear motor has a closed magnetic Circle on, from a permanent magnet PM, a magnetic plate Y1 and a magnetic guide element Y2 is formed. Sliding on one bar attached to the guide element Y2 bobbin CB is a coil C wound at the electrical Er movement an adjustment of the bobbin CB in one piece running carriage CA according to the so-called. Three-finger rule causes. The float of the Sliding on the guide element Y2 is by change reaches the direction of the coil C supplied current. A signal generation plate, z. B. a non-magnetic optical slotted OS, is together with the guide element Y2 and parallel to this with both ends at angled end portions Y1T of the magnetic disk Y1 attached. The carriage CA is with the bobbin CB for the coil C, a z. B. from one with an adhesive material EP1 mounted light emitting diode LE and one with a phototransistor attached to an adhesive material EP2 PT existing slot detector device, a photo sensor element CD and a printed circuit board PC Provided. The printed circuit board PC is electric and mechanically with terminals C1 and C2 of the coil C, Driver connections LZ1, LZ2 of the solid-state laser device LA, terminals LE1, LE2 of the LED LE, on PT1, PT2 of the phototransistor PT and Anschlüs sen of the photosensor element OD connected. This signal Lines are printed at one end of the printed section PC board with one end part FL1 of a flexible one Cable FL connected by the central bending back passed and over his other end part with one not shown connector is coupled so that the Steue tion of the carriage CA and the solids per laser device LA via the flexible cable FL he follows. A paint liquid supply pipe ST for Zufüh tion of colored liquid from a Farbflüssigkeitsbe Container TA is with a plate GL of the recording head  connected. The optical slit plate OS is between the Light emitting diode LE and the phototransistor PT arranged. In connection with the adjustment of the carriage causes the output from the LED LE infrared light over a slit portion SL of the slit plate OS and a attached to the phototransistor PT, not shown Reception slot of the same dimensions that the photo Transistor PT repeatedly switched through and disabled is generated and thereby timing pulses TP. These Timing pulses are used to determine the speed and position of the carriage CA and for controlling the Carriage speed, the laser device and a Stepper motor for paper feed. in case of a Line printing, the characters consist of point matrices or a dot matrix. The adjustment of the carriage Depends on a pressure command signal, whereupon drive pulses of the laser device NP to from the timing pulses TP determined certain positions be fed to the carriage, with the result that the laser head LZH laser pulses to form a color dispenses liquid droplet emission, causing the Auf Drawing a dotted line on the recording paper PP takes place. Upon termination of a dotted line, the (not shown) recording stepping motor for the Paper feed to correspond to one point pitch the amount turned and at the same time the sled in the moved in the opposite direction.

When printing one out of a given one Number of dotted lines (eg seven dotted lines) the line by repeatedly performing the above described process is completed, the Aufzeich tion paper by means of the stepper motor to a the Line spacing corresponding amount moved further, which the printing of a line is completed. Then it will moves the carriage CA in a predetermined position and brought to a standstill there.  

As illustrated in Fig. 11, the photo sensor element CD may be attached to an end face of the carriage CA opposite to its recording side. When used in conjunction with a small copying machine serving for advancing the recording paper stepper motor SH can also be used for synchronized feeding of the original GK, which can be a miniaturized-based device produced and can avoid any deviations in the recording. In addition, it is advantageous to arrange a light-emitting diode LE 'for illuminating the original GK in the vicinity of the photosensor element CD.

As explained above, this can Recording device in small, thin and simple form be realized without disturbing the magnetic field, since the guide element and the non-magnetic slot plate parallel to the magnetic plate of the permanent magnet are arranged.

In addition, that causes Recording device extremely low Arbeitsge Noise, as otherwise usual for the carriage movement wise used rotary motor with the associated Gears, links, racks, etc. as well the rear derailleur, the plunger, etc. for the Papiervor thrust are not present.

Furthermore, by the sliding contact of Schlit least with the signal generating plate a possible Ab Storage of the color liquid on the signal generation plate and thus a possible failure of the detector facility avoided.  

In addition, the use of a connected to various electrically operated parts and mounted on the carriage printed circuit board te a simple and cheap production, the Ver use of a flexible cable an unobstructed and a fold adjustment of the carriage allowed.

Claims (10)

A recording apparatus comprising recording means having a plurality of liquid droplet generating elements arranged laterally in succession in a direction perpendicular to the direction of ejecting the ink and responsive to recording information for ejecting ink from a plurality of apertures for generating flying liquid droplets directed to a recording material, and a laser beam generating means for successively scanning the plurality of liquid droplet generating elements by means of a laser beam for generating the liquid droplets, each liquid droplet generating element being provided with a photothermal transducer for generating heat for effecting a change in state of a liquid in a liquid chamber; and the recording input information via an input device and in a memory device is stored, characterized
in that the recording device (GL, GL1, GL2) is designed to eject inks of different colors from the plurality of apertures and has photothermal transducers arranged corresponding to the plurality of apertures for performing a multi-color recording,
that the laser beam generating means (LZH, LZH1, LZH2) has a semicon terlaserelement which generates a droplet on the liquid droplets generating laser beam pulse, and
in that the input means feeds the storage means with respective ink of different colors of corresponding record information, and the storage means stores the ink of different colors on the record information and applies to the semiconductor laser element of the laser beam generating means. 2. Recording device according to claim 1, characterized gekenn characterized in that the recording means an Tintenver supply device for supplying the ink unterschiedli cher colors to the associated openings. 3. Recording device according to one of the preceding An claims, characterized in that a Korrekturinforma tion encoder device (VRC, VRM, VRY) is provided wel a correction information for changing the Gleichge of the inks ejected over the multiple openings generated different colors. 4. Recording device according to claim 3, characterized marked records that the correction information generator (VRC, VRM, VRY) the correction information for a correction generates the drive of the semiconductor laser element, and that one on the generated correction information and on the recordin supplied from the memory device formation responsive driver device (PAC, PAN, PAY)  for driving the semiconductor laser element (LZS) provided is. 5. Recording device according to claim 4, characterized gekenn records that the driver means the amplitudes of Driver signals according to the correction information varied. 6. Recording device according to claim 4, characterized characterized in that the driver means the pulse width of Driver signals according to the correction information varied. 7. Recording device according to one of claims 4 to 6, characterized in that the correction information encoder device and the driver device each separately for each ink color are provided. 8. Recording device according to one of the preceding An claims, characterized in that the input device is designed as a light receiving device (CD), the received light in an electrical information signal implements.   9. Recording device according to claim 8, characterized ge indicates that it is in a copier, a facsimile milegerät or a terminal of a computer system can be used. 10. Recording device according to one of the preceding Claims, characterized in that in the state change the ink in the liquid chamber Bubbles are generated that grow and grow rapidly gradually shrinking.