EP0835757B1 - Procédé d'actionnement des éléments piézoélectrique dans une tête d'impression d'un générateur de gouttes - Google Patents

Procédé d'actionnement des éléments piézoélectrique dans une tête d'impression d'un générateur de gouttes Download PDF

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Publication number
EP0835757B1
EP0835757B1 EP97810560A EP97810560A EP0835757B1 EP 0835757 B1 EP0835757 B1 EP 0835757B1 EP 97810560 A EP97810560 A EP 97810560A EP 97810560 A EP97810560 A EP 97810560A EP 0835757 B1 EP0835757 B1 EP 0835757B1
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EP
European Patent Office
Prior art keywords
channels
channel
impulse
activated
expulsion
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP97810560A
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German (de)
English (en)
Other versions
EP0835757A2 (fr
EP0835757A3 (fr
Inventor
Joachim Heinzl
Alfred Zollner
Peter Möstl
Gerhard Beurer
Joachim Kretschmer
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Xaar Technology Ltd
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Xaar Technology Ltd
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Publication date
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Publication of EP0835757A3 publication Critical patent/EP0835757A3/fr
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Publication of EP0835757B1 publication Critical patent/EP0835757B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J29/00—Details of, or accessories for, typewriters or selective printing mechanisms not otherwise provided for
    • B41J29/38—Drives, motors, controls or automatic cut-off devices for the entire printing mechanism
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/015—Ink jet characterised by the jet generation process
    • B41J2/04—Ink jet characterised by the jet generation process generating single droplets or particles on demand
    • B41J2/045—Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
    • B41J2/04501—Control methods or devices therefor, e.g. driver circuits, control circuits
    • B41J2/04525—Control methods or devices therefor, e.g. driver circuits, control circuits reducing occurrence of cross talk
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/015—Ink jet characterised by the jet generation process
    • B41J2/04—Ink jet characterised by the jet generation process generating single droplets or particles on demand
    • B41J2/045—Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
    • B41J2/04501—Control methods or devices therefor, e.g. driver circuits, control circuits
    • B41J2/04541—Specific driving circuit
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/015—Ink jet characterised by the jet generation process
    • B41J2/04—Ink jet characterised by the jet generation process generating single droplets or particles on demand
    • B41J2/045—Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
    • B41J2/04501—Control methods or devices therefor, e.g. driver circuits, control circuits
    • B41J2/04568—Control according to number of actuators used simultaneously
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/015—Ink jet characterised by the jet generation process
    • B41J2/04—Ink jet characterised by the jet generation process generating single droplets or particles on demand
    • B41J2/045—Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
    • B41J2/04501—Control methods or devices therefor, e.g. driver circuits, control circuits
    • B41J2/04581—Control methods or devices therefor, e.g. driver circuits, control circuits controlling heads based on piezoelectric elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/015—Ink jet characterised by the jet generation process
    • B41J2/04—Ink jet characterised by the jet generation process generating single droplets or particles on demand
    • B41J2/045—Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
    • B41J2/04501—Control methods or devices therefor, e.g. driver circuits, control circuits
    • B41J2/04588—Control methods or devices therefor, e.g. driver circuits, control circuits using a specific waveform
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/015—Ink jet characterised by the jet generation process
    • B41J2/04—Ink jet characterised by the jet generation process generating single droplets or particles on demand
    • B41J2/045—Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
    • B41J2/04501—Control methods or devices therefor, e.g. driver circuits, control circuits
    • B41J2/04591—Width of the driving signal being adjusted
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2202/00—Embodiments of or processes related to ink-jet or thermal heads
    • B41J2202/01—Embodiments of or processes related to ink-jet heads
    • B41J2202/10—Finger type piezoelectric elements

Definitions

  • WO 95/25011 describes a method for operating a print head of an ink jet printer known.
  • the printhead has one Large number of channels arranged side by side, each with a nozzle assigned. By activating a channel, the corresponding one is Ejected a droplet of ink. With control impulses is achieved that pressure waves within an activated Decay faster. With this solution, the Amplitude values of the pulses set, for which linear amplifiers are needed. These have poor efficiency and require a complex circuit. Limit the pulse widths to integer multiples of an acoustic period L / c, where L is the channel length and c is the speed of sound in the liquid is. Due to the complexity of the impulses it is only possible all channels with the same control voltage and to operate with the same pulse width.
  • the present invention is based on the object to provide a method of operating a printhead which avoids the above disadvantage. This task is accomplished by the Combination of features of the claims solved.
  • FIGs 1 to 3 is part of a piezoelectric schematic Printhead 1 of an ink jet printer based on the shear converter principle greatly enlarged and not shown to scale. It consists of a piezoceramic plate 2, in which side by side a variety of longitudinal, identical, in cross section rectangular channels 3 is incorporated and one Cover plate 4 and a nozzle plate 5, which at one end each channel 3 has a nozzle 6. On the opposite All channels 3 are at the front end with one another via a transverse channel 7 connected in the cover plate 4. A connecting line opens into channel 7 8 to an ink reservoir 9.
  • Each partition 10 between the channels 3 is on both sides on a partial area with an electrode 11, ie an electrically conductive layer Mistake.
  • the plate 2 is mounted on a base plate 12.
  • An electrical voltage is applied to the pair of electrodes of a wall 10 applied, so arises due to the direction of polarization of the piezo material, a shear of the channel partition 10.
  • the clamping deforms the wall 10 as in FIG. 3 is outlined. If two adjacent walls 10 are deformed in opposite directions, so there is an increase or decrease in volume of the activated channel 3a.
  • the applied to the electrodes 11 Pulse shape becomes an intake pulse and an opposite one Ejection pulse divided. They deform during the intake pulse Walls of the activated channel 3a as shown in Figure 3, see above that ink is drawn from channel 7 into activated channel 3a becomes.
  • the activated walls 10 become in opposite directions deformed so that a droplet from the nozzle 6 of the activated Channel is ejected.
  • connection channel 7 Because of the connection channel 7 are now when activating one Channel 3a not only the immediately adjacent channels 3b, but also more distant channels through the emerging Pressure vibration affected.
  • the inventors have found that the ejection speed of the droplets from an activated Channel 3a is different with constant pulse shape, depending on whether at the same time with this one channel 3a none or a third adjacent channel 3c or both third adjacent channels 3c to be activated. This difference in drop speed is disadvantageous because it adversely affects the printed image. It can be changed by changing the pulse shape depending on the number of the simultaneously activated third adjacent channels avoided become.
  • FIG. 5 shows a similar diagram for the ejection pulse t2, the pulse width on the time axis in turn as a multiple the acoustic period and on the ordinate the refill time are plotted as multiples of the acoustic period.
  • the pulse voltage is adjusted in such a way that in turn a constant Drop speed of 6m / s is achieved.
  • the refill time is the amount of time it takes for the fluid meniscus reached its starting position at the nozzle 6 again Has.
  • the three variants are plotted on which at the same time with the activated channel no third Neighbor, a third neighbor or two third neighbors activated become.
  • the curves found have several intersection points. It is therefore possible to operate on one of these intersections get by with just a single output pulse shape.
  • Optimal is the intersection at which the refill time is minimal is. This is 1.1 times the acoustic period of the Case.
  • Figure 6 shows the three determined pulse shapes for operation with none (Fig. 6a), one (Fig. 6b) and two activated at the same time third adjacent channels (Fig. 6c).
  • the suction impulses 13 different pulse widths and the shape of the Ejection pulses 14 are constant.
  • the outermost two channels 3d of the printhead cannot be activated because of their outer wall is rigid.
  • 64 could be activated in the print head Channels, so he has a total of 66 or 68 channels, whereby the outermost n channels are unused.
  • a printhead with 64 channels that can be activated requires 65 piezo actuators and 66 electrical connections.
  • the outer wall of the outermost Channels 3d act for the pressure oscillation in the transverse channel 7 like a mirror. The reflection there took place in one the nearby operated channel has the same influence as if the mirrored one third or sixth adjacent channel operated simultaneously would. This is when assigning the intake pulse width appropriately considered this channel.
  • FIG. 1 schematically shows an integrated control circuit 15, which is conveniently attached to the base plate 12. Thereby becomes the number of lines used to control the printhead 1 are significantly reduced.
  • FIG. 7 The function of the integrated control circuit is shown in FIG. 7 clarified.
  • the block diagram shows the most important internal ones Sub-functions consisting of circuit breaker 16, selection logic 17 and shift register 18.
  • Sub-functions consisting of circuit breaker 16, selection logic 17 and shift register 18.
  • For the electrical connection to Printer controls are used in this particular embodiment only 13 lines required.
  • the power supply for the power and logic part is done via the connections POWER, PGND, VCC, and GND.
  • Via RESET connection the control is set to a defined basic state.
  • the connections G1 to G4 and the connection NEXT are used for Control of drop generation, where G1 to G3 are the three different ones Intake pulse widths and G4 as the exhaust pulse width means.
  • the connections DSERIN, DSEROUT and DCLK serve of data transmission, with the DSEROUT output for service purposes serves.
  • the data block transferred to the shift register is sent back to the PC or the printer control and there with the data block transmitted via DSERIN compared. Thus a correct data transmission are checked.
  • An entire data block is used for operation via DSERIN all 64 nozzles (in the aforementioned example) into the shift register read.
  • the nozzles 6 are operated in three phases. In the data block So there is the information which nozzles in the next Phases are operated, i.e. the pattern to be printed.
  • FIG. 8 shows the first part of the selection logic 17.
  • the NEXT signal activates the first phase Ph1 belonging nozzles, provided by the content of the shift register (the upper row of digits in Fig. 8) is selected are.
  • the signals Ph1, Ph2 and Ph3 are used in succession the NEXT signals generated by the phase switch 22.
  • the output signals on the output conductors 23, 24, 25 of the phase selection switch 22 are via AND gates 26 with the input signals linked from the shift register 18. This ensures that only at most every third channel of the printhead is activated at the same time.
  • Ph3 is with the next NEXT signal started again with Ph1.
  • the DSERIN input has been read into the shift register 18 the three phases repeated, the nozzles 6 in the same pattern activated again. This allows different shades of gray be achieved. If no shades of gray are required, it follows Read in a new data block after every third NEXT pulse clocked into the shift register 18 via the input DSERIN by DCKL. As soon as the new data block has been read in, this can be done next pattern printed with a sequence of three NEXT pulses become. The data transmission and the NEXT pulses are through the printer hardware synchronized and in function of the movement the print head controlled relative to the paper to be printed.
  • the second part of the selection logic 17 is shown in FIG. 9. It shows an embodiment with one with simple logic gates built circuit for the selection of the pulse shape any channel i, depending on the adjacent channels.
  • the signal for channel i is at one of the three inputs of three AND gates 27 connected.
  • the signal for the two third adjacent channels i-3 and i + 3 is connected to the other two inputs in the first gate 27 via an inverter 28 each second gate 27 via an EXCLUSIVE OR and to the third gate directly connected.
  • a signal appears t10, t11 or t12 on the first, second or third gate 27.
  • This selection circuit 30 is for all channels that can be activated 3 of the print head 1 is present, as shown in FIG. 10 is.
  • Each of the three outputs t10, t11, t12 of the circuits 30 is via an AND gate 31 with the three lines 32, 33, 34 linked to which the three signals G1, G2 and G3 for the three different intake pulses 13 are pending.
  • the exit of the three gates 31 assigned to a circuit 30 go to the input an OR gate 35.
  • the pulse length at the outputs of the Gate 35 is then dimensioned so that the drop speed is independent of the number of thirds activated at the same time Adjacent channels.
  • the circuit 36 according to FIG. 10 still follows known intrusion of the ejection pulses to the activated ones Channels (inputs at the top of Fig. 10), with which then the circuit breakers 16, the electrodes 11 are controlled.
  • circuit shown is only one of many possible Embodiments that for the sake of simplicity was chosen.
  • Logic functions can be done by any combination of gates can be realized, with simplifications are conceivable in which partial functions are already in others
  • Function blocks can be realized, for example by double To avoid negations.
  • the solution according to the invention can be refined if in addition to the number of third adjacent channels, the number of the sixth adjacent channels activated at the same time (their influence on the exit speed is however lower) is taken into account.
  • the circuitry is however higher and there are a total of nine different suction pulse shapes required, from each of which the applicable by a appropriate logic circuit is to be determined.
  • FIG. 11 shows a further possibility of refinement:
  • the decay of the pressure waves in neighboring ones is shown Channels if channel 0 has been activated.
  • the pressure fluctuations in the first adjacent channel are relatively considerable and decrease with increasing channel spacing.
  • printheads which are the phases follow quickly, i.e. quickly from a nozzle group the other is switched over, it is advisable to use the Selection of the pulse shape, in particular the pulse duration, in addition to take into account how many first and second adjacent channels in a fixed interval before the activated channel is triggered were operated.
  • the exemplary embodiment described is a Piezoelectric printhead of the shear transducer type. But there are other types of piezoelectric printheads are also possible Example those with a bending oscillator over each nozzle, for Example according to EP-A-713 773. With this type of converter also two neighboring nozzles are activated at the same time. Also at the present invention is applicable to these printheads because even with these via pressure vibrations when activating one Adjacent channels can be affected. In this case of course the link condition is different, so for example the number of simultaneously activated first and second adjacent channels can be taken into account.

Landscapes

  • Particle Formation And Scattering Control In Inkjet Printers (AREA)

Claims (9)

  1. Procédé d'actionnement des éléments piézoélectriques dans une tête d'impression (1) d'un générateur de gouttes avec une pluralité de canaux à encre (3) placés les uns à côté des autres, dans lequel les éléments piézoélectriques (10, 11) sont actionnés de telle sorte que la vitesse de sortie des gouttes est indépendante du nombre de canaux adjacents (3c) activés en même temps, dans lequel la forme des impulsions d'activation est modifiée en fonction du nombre de canaux adjacents (3c) activés en même temps.
  2. Procédé selon la revendication 1, dans lequel la durée d'impulsion des impulsions d'aspiration (13) et/ou des impulsions d'éjection (14) varie.
  3. Procédé selon la revendication 2, dans lequel en même temps chaque énième canal (3) est tout au plus activé et dans lequel trois formes d'impulsion différentes sont utilisées selon qu'aucun, un ou deux énièmes canaux adjacents (3c) sont activés.
  4. Procédé selon la revendication 2, dans lequel, en même temps chaque énième canal (3) est tout au plus activé et dans lequel neuf formes d'impulsion différentes sont utilisées selon qu'aucun, un ou deux énièmes canaux adjacents et/ou aucun, un ou deux seconds énièmes canaux adjacents sont activés.
  5. Procédé selon l'une des revendications 1 à 4, dans lequel la forme d'impulsion varie en fonction du nombre de premiers ou deuxièmes canaux adjacents qui ont été activés dans un intervalle de temps fixe avant le déclenchement de l'éjection actuelle des gouttes.
  6. Procédé selon l'une des revendications 1 à 5, dans lequel les impulsions d'activation comprennent une impulsion d'aspiration et une impulsion d'éjection et dans lequel les impulsions d'éjection sont maintenues constantes.
  7. Procédé selon la revendication 6, dans lequel les impulsions d'éjection sont sélectionnées pour que le temps de remplissage des canaux soit minimal.
  8. Procédé selon l'une des revendications 1 à 7, dans lequel la fin d'une impulsion d'aspiration de chaque canal en fonction coïncide avec le début d'une impulsion d'éjection de ce canal.
  9. Procédé selon l'une des revendications 1 à 8, dans lequel des deux côtés de la tête d'impression n canaux ne sont pas en fonction, et dans lequel le dernier canal en fonction fonctionne comme si le second énième canal adjacent non existant fonctionnait en plus.
EP97810560A 1996-10-08 1997-08-08 Procédé d'actionnement des éléments piézoélectrique dans une tête d'impression d'un générateur de gouttes Expired - Lifetime EP0835757B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH02446/96A CH691049A5 (de) 1996-10-08 1996-10-08 Verfahren zum Ansteuern von Piezoelementen in einem Druckkopf eines Tropfenerzeugers.
CH2446/96 1996-10-08
CH244696 1996-10-08

Publications (3)

Publication Number Publication Date
EP0835757A2 EP0835757A2 (fr) 1998-04-15
EP0835757A3 EP0835757A3 (fr) 1999-03-31
EP0835757B1 true EP0835757B1 (fr) 2002-11-27

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP97810560A Expired - Lifetime EP0835757B1 (fr) 1996-10-08 1997-08-08 Procédé d'actionnement des éléments piézoélectrique dans une tête d'impression d'un générateur de gouttes

Country Status (5)

Country Link
US (1) US6286925B1 (fr)
EP (1) EP0835757B1 (fr)
CA (1) CA2217833C (fr)
CH (1) CH691049A5 (fr)
DE (1) DE59708813D1 (fr)

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Publication number Priority date Publication date Assignee Title
EP0983145B1 (fr) 1997-05-15 2002-09-18 Xaar Technology Limited Fonctionnement d'un appareil a depot de gouttelettes
DE69936606T2 (de) * 1998-02-13 2007-11-22 Toshiba Tec K.K. Tintenstrahlkopfantriebvorrichtung
GB2338927B (en) * 1998-07-02 2000-08-09 Tokyo Electric Co Ltd A driving method of an ink-jet head
GB2338928B (en) 1998-07-02 2000-08-09 Tokyo Electric Co Ltd A driving method of an ink-jet head
JP2000203014A (ja) * 1999-01-08 2000-07-25 Fujitsu Ltd ヘッド駆動回路とそれを備えたインクジェットプリンタ
DE19911399C2 (de) * 1999-03-15 2001-03-01 Joachim Heinzl Verfahren zum Ansteuern eines Piezo-Druckkopfes und nach diesem Verfahren angesteuerter Piezo-Druckkopf
US7278701B2 (en) * 2003-07-30 2007-10-09 Lexmark International, Inc. Method of informing a user of an imaging apparatus of an event via a print fade
US20070273731A1 (en) * 2006-05-26 2007-11-29 Icf Technology Limited Method for driving an ink jet head having piezoelectric actuator
WO2009116993A1 (fr) * 2008-03-17 2009-09-24 Hewlett-Packard Development Company, L.P. Support pour diaphragme de tête d'impression
WO2014174503A1 (fr) 2013-04-23 2014-10-30 Hewlett-Packard Industrial Printing Ltd. Suppression d'interférences croisées entre des buses à jet d'encre adjacentes
JP6999317B2 (ja) * 2017-07-21 2022-01-18 東芝テック株式会社 インクジェットヘッド及びインクジェットプリンタ
JP2019188613A (ja) * 2018-04-18 2019-10-31 東芝テック株式会社 液体吐出ヘッド
JP7501629B2 (ja) * 2020-06-29 2024-06-18 コニカミノルタ株式会社 インクジェットヘッドの駆動制御方法及びインクジェット記録装置

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US5221931A (en) * 1988-04-26 1993-06-22 Canon Kabushiki Kaisha Driving method for ink jet recording head and ink jet recording apparatus performing the method
GB8830398D0 (en) * 1988-12-30 1989-03-01 Am Int Droplet deposition apparatus
GB9022662D0 (en) * 1990-10-18 1990-11-28 Xaar Ltd Method of operating multi-channel array droplet deposition apparatus
JP2935886B2 (ja) * 1990-11-09 1999-08-16 シチズン時計株式会社 インクジェットヘッド
US5142296A (en) * 1990-11-09 1992-08-25 Dataproducts Corporation Ink jet nozzle crosstalk suppression
US5461403A (en) * 1991-08-16 1995-10-24 Compaq Computer Corporation Droplet volume modulation techniques for ink jet printheads
JP3193127B2 (ja) * 1992-06-05 2001-07-30 株式会社リコー 液体噴射記録ヘッドの駆動方法
JPH07132590A (ja) * 1993-11-09 1995-05-23 Brother Ind Ltd インク噴射装置の駆動方法
GB9405137D0 (en) * 1994-03-16 1994-04-27 Xaar Ltd Improvements relating to pulsed droplet deposition apparatus
CH688960A5 (de) 1994-11-24 1998-06-30 Pelikan Produktions Ag Tropfenerzeuger fuer Mikrotropfen, insbesondere fuer einen Ink-Jet-Printer.

Also Published As

Publication number Publication date
CA2217833A1 (fr) 1998-04-08
CH691049A5 (de) 2001-04-12
US6286925B1 (en) 2001-09-11
CA2217833C (fr) 2005-07-26
DE59708813D1 (de) 2003-01-09
EP0835757A2 (fr) 1998-04-15
EP0835757A3 (fr) 1999-03-31

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