EP0354706A2 - Système et méthode de commande d'écoulement de l'encre pour une imprimante à jet d'encre - Google Patents

Système et méthode de commande d'écoulement de l'encre pour une imprimante à jet d'encre Download PDF

Info

Publication number
EP0354706A2
EP0354706A2 EP89307791A EP89307791A EP0354706A2 EP 0354706 A2 EP0354706 A2 EP 0354706A2 EP 89307791 A EP89307791 A EP 89307791A EP 89307791 A EP89307791 A EP 89307791A EP 0354706 A2 EP0354706 A2 EP 0354706A2
Authority
EP
European Patent Office
Prior art keywords
ink
meniscus
orifice
amplitude
frequency
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.)
Withdrawn
Application number
EP89307791A
Other languages
German (de)
English (en)
Other versions
EP0354706A3 (fr
Inventor
Steven J. Bares
Marzio A. Leban
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HP Inc
Original Assignee
Hewlett Packard Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hewlett Packard Co filed Critical Hewlett Packard Co
Publication of EP0354706A2 publication Critical patent/EP0354706A2/fr
Publication of EP0354706A3 publication Critical patent/EP0354706A3/fr
Withdrawn legal-status Critical Current

Links

Images

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
    • 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
    • B41J2/135—Nozzles
    • B41J2/14—Structure thereof only for on-demand ink jet heads
    • B41J2/14201—Structure of print heads with 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
    • B41J2/055—Devices for absorbing or preventing back-pressure
    • 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
    • B41J2/135—Nozzles
    • B41J2/14—Structure thereof only for on-demand ink jet heads
    • B41J2/14016—Structure of bubble jet print heads
    • B41J2/14032—Structure of the pressure chamber
    • B41J2/1404—Geometrical characteristics
    • 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
    • B41J2/135—Nozzles
    • B41J2/14—Structure thereof only for on-demand ink jet heads
    • B41J2002/14387—Front shooter

Definitions

  • This invention relates generally to ink jet printing systems and more particularly to such systems employing auxiliary ink pumping means for improving operational performance. These systems are operative to maintain a positive pressure within an ink cavity and ink channel of an ink jet pen for extending its maximum operating frequency.
  • F max the maximum achievable operating frequency, is inherently limited by: 1) the inability of the natural capillary action in the ink feed apparatus to adequately supply ink to the ink reservoir chamber (the ink cavity) of the printhead and 2) by oscillations of the ink meniscus at the orifice plate of the printhead which persist for some time, To, after drop ejection has occurred.
  • One approach to extending F max as well as providing other operational improvements in thermal ink jet printheads is disclosed and claimed in copending application Serial No. 120,300 of Marzio A. Leban et al entitled “Integral Thin Film Injection System For Thermal Ink Jet Heads and Method of Operation", filed November 13, 1987, assigned to the present assignee and incorporated herein by reference (European Application No. 88310572.8).
  • Thermal ink jet printers having these operational characteristics are now generally well known in the art and are described, for example in the Hewlett-Packard Journal , Volume 38, No. 5, May 1985, incorporated herein by reference.
  • These printers employ printhead devices having resistive heater elements (resistors) which are normally aligned with corresponding ink ejection orifices in an adjacent orifice plate and are operative to receive electrical drive pulses from an external source. These pulses rapidly heat the heater resistors and thereby cause ink in an adjacent ink reservoir to vaporize and be forced out of the orifice plate during an ink jet printing operation.
  • resistive heater elements resistive heater elements
  • Another object is to provide a new and improved printhead of the type described which is operative to generate meniscus oscillations of the ink at the orifice of a controlled frequency, Fm, and a controlled amplitude, Im.
  • This action allows firing of ink drops of varying volume from the same orifice by timing the drop firing with meniscus height. Small drops are ejected when firing occurs at low meniscus levels, and large drops are ejected when firing occurs at high meniscus levels.
  • Another object is to extend the upper limit of the usable ink viscosity. This is accomplished by employing the pumping action of a piezoelectric system to produce a positive pressure over and above the natural capillary force within the ink capillary cavity and ink capillary channel of the ink jet printhead.
  • a resistive heater element is aligned with respect to an orifice plate, and an ink flow path supplies ink into a chamber or reservoir between the resistive heater element and the orifice plate.
  • This improved system includes, among other things: 1) a piezoelectric system which is mounted internal to the ink cavity of an ink jet printhead; 2) an external piezoelectric system which is mounted directly on the orifice plate of an ink jet printhead; 3) dual independent piezoelectric systems which are both mounted internal to the ink cavity of the printhead; and 4) dual piezoelectric systems with one being internal to the ink cavity of the printhead and the other being external and mounted directly on the orifice plate of the printhead.
  • the above described ink feed systems may be used to: 1) produce oscillations of controlled frequency, Fm, and controlled amplitude, Im, of the ink meniscus at the ink ejection orifice and produce the ejection of ink drops from a single orifice with varying and controlled volumes; 2) extend the maximum frequency of operation, F max , of the ink jet printhead; and 3) extend the viscosity range of inks which may be used.
  • FIG. 1 there is shown a perspective view of a single heater element (resistor) 11 surrounded by a barrier material 12 forming an ink channel 13 immediately adjacent to the resistor 11.
  • the barrier material 12 also forms an ink cavity region 14 exterior to the ink channel 13.
  • This type of three sided barrier layer construction is generally well known in the art and is disclosed for example in copending applications serial nos. 109,685 and 057,573 of Howard H. Taub et al assigned to the present assignee and incorporated herein by reference (European Application Nos. 88309820.4 and 88304048.7).
  • Figure 2 is a cross section view which would be taken through the center of the resistor in Figure 1 when the printhead structure therein, including the orifice plate, is completed.
  • Figure 2 further illustrates that the ink cavity 14 is formed between an underlying substrate 15 and an outer orifice plate 16.
  • An orifice 17 is positioned immediately above the resistor 11, and ink from an ink feed system 18 is drawn into the ink cavity 14 and into the ink channel 13 regions by a capillary force.
  • a piezoelectric material 22 such as quartz or barium titanate crystals or a kynar piezoelectric film is introduced into the ink cavity 14 as shown in Figure 5, or is mounted externally on the outer surface of the orifice plate 16 as shown in Figure 6.
  • the material 22 is connected in such a manner that it can be energized with a controlled electrical signal, and this signal induces oscillations, of controlled frequency and magnitude, within the material 22. This action in turn produces a positive ink pressure within the ink cavity 14 and the ink channel 13 and thereby behaves as an ink pump. Both internally and externally mounted piezoelectric systems function in an equivalent manner.
  • piezoelectric driving circuits suitable for providing the piezoelectric drive signals described herein, and the choice of circuit design of these drivers is considered well within the skill of the art. Therefore, a detailed description of specific driver circuit design has been omitted for sake of brevity.
  • piezoelectric driver circuits have been described in many U.S. Patents, such as U.S. Patents 4,714,935, 4,717,927, 4,630,072, 4,498,089 and 4,521,786. Piezoelectric driver circuits have also been enclosed in the following four textbook references, and these four textbook references as well as the above patents are incorporated herein by reference:
  • the oscillations of the piezoelectric material 22 produce a constant, symmetric and continuous oscillation of the ink meniscus as shown in Figure 4B.
  • These continuous, induced, symmetric and controlled meniscus oscillations of frequency, Fm, and amplitude, Im, in Figure 4B are superimposed on the "natural oscillations" in Figure 4A.
  • the net result of this superposition of these two kinds of meniscus oscillations is a virtual "swamping out" of the natural meniscus oscillations in Figure 4A, and the virtual elimination of the "dead time", To, which is responsible for limiting the maximum operating frequency, F max , of the ink jet printhead.
  • the timing of the firing of resistor 11 with respect to the meniscus amplitude, Im, of the induced meniscus oscillations is crucial. If the resistor 11 is fired at the equilibrium position, or points (T) in Figure 4B, the ink jet printhead is operating in the "equilibrium mode" and medium volume ink drops, Veq, are ejected. These ejected ink drops are of a volume equal to the case where the piezoelectric material is not pulsed.
  • the maximum achievable operating frequency, F max of the ink jet printhead operating in the "equilibrium mode” is limited only by the frequency of induced meniscus oscillations, Fm.
  • the resistor 11 is fired at the maximum meniscus extension position, namely at points (U) in Figure 4B, then the ink jet printhead is operating in the "rich mode” and maximum volume ink drops, V max , are ejected. If the resistor 11 is fired at the minimum meniscus extension position, which is point (V) in Figure 4B, then the ink jet printhead is operating in the "lean mode” and minimum volume ink drops, Vmin, are ejected. Firing the resistor 11 at different points between the rich and lean modes will cause ink drops to be ejected in varying and controlled volumes.
  • the range of ejected ink drop volume may be extended by employing dual independently controlled piezoelectric systems within an ink jet printhead.
  • Figure 7 illustrates such a system where both independently controlled piezoelectric drivers 22 are incorporated within the ink cavity 14.
  • Figure 8 illustrates another system where the piezoelectric drivers 22 are incorporated both inside and outside the ink cavity 14, with the outside driver mounted on the orifice plate 16. The method of operation of both these systems in Figures 7 and 8 is the same.
  • Each independently driven piezoelectric driver 22 may be energized with a controlled signal and caused to oscillate which in turn induces a symmetric meniscus oscillation as described above. If both piezoelectric drivers within an ink jet printhead are caused to oscillate in phase with each other and with equivalent amplitudes, then the induced meniscus oscillation remains symmetric as described above with reference to Figure 4B.
  • both piezoelectric drivers 22 may be caused to: 1) oscillate out of phase with each other at the same frequency and amplitude; or 2) oscillate out of phase with each other at the same amplitude and with a different frequency.
  • the combination of frequency, amplitude and phase shift may be selected to induce a meniscus oscillation which is asymmetric as shown in Figures 9A and 9B.
  • the maximum volume ink drop, Vmax, ejected may be further extended from the symmetric case due to the greater meniscus extension in the asymmetric case.
  • the limiting situation is attained when the asymmetric positive meniscus extension is so great that actual drop ejection begins to occur.
  • Large positive asymmetric meniscus extensions may be favored by suitable choice of ink viscosity and surface energy of the ink.
  • the minimum volume ink drop, Vmin, ejected may be further extended from the symmetric case.
  • the limiting situation is attained when the asymmetric negative meniscus extension is so great that the printhead will begin to aspirate air through an orifice opening in the orifice plate of the printhead. Air aspiration may be modified by suitable choice of ink viscosity and ink surface energy.
  • the pumping action of the added piezoelectric system described above enables the ink jet printhead to be used not only with current inks, with their low viscosities ( ⁇ about 3 cps) and higher surface tensions (> about 55 dyne/cm), but also with inks having a lower surface tension and a higher viscosity.
  • higher viscosity inks penetrate slower into the surface of paper such that the print quality on a variety of papers, and particularly on xerographic or bond papers, is improved.
  • Printheads using higher viscosity inks therefore print more consistently on a wider set of plain papers.
  • the ability to use both high viscosity and low surface tension inks yield faster drytimes on plain papers as well.
  • Standard ink technology which employs soluble dyes in a usually aqueous based vehicle, could be expanded to use a much larger group of allowable solvents.
  • higher molecular weight glycols, ethers, ketones, and the like could be used in conjunction with water to obtain the desired vehicle properties.
  • This expanded group of solvents allow dyes to be used in the new printhead described herein which are not currently acceptable because of solubility or reactivity with the ink vehicle. These additional dyes improve contrast, color, hue and print quality on the printed medium.
  • non standard ink jet inks e.g. non-aqueous, dye based
  • pigment based, microemulsion or encapsulation inks could be used.
  • the present invention is not strictly limited to the specific printhead cross-section geometries shown and may be practiced using various printhead geometries including the well known "side shooter”, “face shooter” and “edge-shooter” constructions and the use of offsets between heater resistor center lines and orifice centers.
  • the geometries of the ink feed channel and the ink reservoir cavities may be modified in accordance with the design constraints applicable to a variety of thermal ink jet printhead applications, and may include various state of the art hydraulic tuning and crosstalk reduction features.

Landscapes

  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Particle Formation And Scattering Control In Inkjet Printers (AREA)
EP89307791A 1988-08-10 1989-08-01 Système et méthode de commande d'écoulement de l'encre pour une imprimante à jet d'encre Withdrawn EP0354706A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US23064488A 1988-08-10 1988-08-10
US230644 1988-08-10

Publications (2)

Publication Number Publication Date
EP0354706A2 true EP0354706A2 (fr) 1990-02-14
EP0354706A3 EP0354706A3 (fr) 1990-08-01

Family

ID=22866024

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89307791A Withdrawn EP0354706A3 (fr) 1988-08-10 1989-08-01 Système et méthode de commande d'écoulement de l'encre pour une imprimante à jet d'encre

Country Status (3)

Country Link
EP (1) EP0354706A3 (fr)
JP (1) JPH0288246A (fr)
CA (1) CA1319561C (fr)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0510934A3 (en) * 1991-04-26 1993-05-12 Canon Kabushiki Kaisha Ink jet recording apparatus and method capable of performing high-speed recording
EP0621135A1 (fr) * 1993-04-23 1994-10-26 Brother Kogyo Kabushiki Kaisha Appareil à jet d'encre
EP0678391A1 (fr) * 1994-03-08 1995-10-25 Sony Corporation Système pour l'enregistrement par transfert thermique
EP0738602A2 (fr) * 1995-04-21 1996-10-23 Seiko Epson Corporation Tête à jet d'encre
US5828391A (en) * 1994-03-08 1998-10-27 Sony Corporation Thermal transfer recording device
US6149259A (en) * 1991-04-26 2000-11-21 Canon Kabushiki Kaisha Ink jet recording apparatus and method capable of performing high-speed recording
US6217159B1 (en) 1995-04-21 2001-04-17 Seiko Epson Corporation Ink jet printing device
EP1172212A3 (fr) * 2000-07-11 2002-03-27 Samsung Electronics Co., Ltd. Tête à jet d'encre de type à bulles
EP1302319A3 (fr) * 2001-10-12 2004-01-02 Eastman Kodak Company Actionneur thermique pour appareil de formation de gouttes à la demande et procédé pour consommation réduite d'énergie
EP1510342A1 (fr) * 2003-09-01 2005-03-02 Fuji Photo Film Co., Ltd. Tête jet d'encre et appareil d'enregistrement à jet d'encre
WO2005102707A1 (fr) * 2004-04-14 2005-11-03 Eastman Kodak Company Dispositif et procede de regulation de la trajectoire d'une gouttelette

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101865989B1 (ko) * 2011-08-31 2018-06-08 휴렛-팩커드 디벨롭먼트 컴퍼니, 엘.피. 유체 변위 액추에이터를 구비하는 유체 분출 장치 및 관련된 방법

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4296421A (en) * 1978-10-26 1981-10-20 Canon Kabushiki Kaisha Ink jet recording device using thermal propulsion and mechanical pressure changes
US4580149A (en) * 1985-02-19 1986-04-01 Xerox Corporation Cavitational liquid impact printer
US4646110A (en) * 1982-12-29 1987-02-24 Canon Kabushiki Kaisha Liquid injection recording apparatus
US4672398A (en) * 1984-10-31 1987-06-09 Hitachi Ltd. Ink droplet expelling apparatus

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4296421A (en) * 1978-10-26 1981-10-20 Canon Kabushiki Kaisha Ink jet recording device using thermal propulsion and mechanical pressure changes
US4646110A (en) * 1982-12-29 1987-02-24 Canon Kabushiki Kaisha Liquid injection recording apparatus
US4672398A (en) * 1984-10-31 1987-06-09 Hitachi Ltd. Ink droplet expelling apparatus
US4580149A (en) * 1985-02-19 1986-04-01 Xerox Corporation Cavitational liquid impact printer

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5280310A (en) * 1991-04-26 1994-01-18 Canon Kabushiki Kaisha Ink jet recording apparatus and method capable of performing high-speed recording by controlling the meniscus of ink in discharging orifices
US5481281A (en) * 1991-04-26 1996-01-02 Canon Kabushiki Kaisha Ink jet recording apparatus and method capable of performing high-speed recording
EP0510934A3 (en) * 1991-04-26 1993-05-12 Canon Kabushiki Kaisha Ink jet recording apparatus and method capable of performing high-speed recording
US6149259A (en) * 1991-04-26 2000-11-21 Canon Kabushiki Kaisha Ink jet recording apparatus and method capable of performing high-speed recording
EP0805027A2 (fr) * 1991-04-26 1997-11-05 Canon Kabushiki Kaisha Appareil d'enregistrement à jet d'encre et méthode d'enregistrement à haute vitesse
EP0805027A3 (fr) * 1991-04-26 1997-11-12 Canon Kabushiki Kaisha Appareil d'enregistrement à jet d'encre et méthode d'enregistrement à haute vitesse
EP0621135A1 (fr) * 1993-04-23 1994-10-26 Brother Kogyo Kabushiki Kaisha Appareil à jet d'encre
US5587727A (en) * 1993-04-23 1996-12-24 Brother Kogyo Kabushiki Kaisha Ink jet apparatus using pressure wave intersection to eject ink droplets
US5828391A (en) * 1994-03-08 1998-10-27 Sony Corporation Thermal transfer recording device
EP0678391A1 (fr) * 1994-03-08 1995-10-25 Sony Corporation Système pour l'enregistrement par transfert thermique
EP0738602A2 (fr) * 1995-04-21 1996-10-23 Seiko Epson Corporation Tête à jet d'encre
EP0738602A3 (fr) * 1995-04-21 1997-06-11 Seiko Epson Corp Tête à jet d'encre
US6217159B1 (en) 1995-04-21 2001-04-17 Seiko Epson Corporation Ink jet printing device
US6382754B1 (en) 1995-04-21 2002-05-07 Seiko Epson Corporation Ink jet printing device
EP1172212A3 (fr) * 2000-07-11 2002-03-27 Samsung Electronics Co., Ltd. Tête à jet d'encre de type à bulles
US6761433B2 (en) 2000-07-11 2004-07-13 Samsung Electronics Co., Ltd. Bubble-jet type ink-jet printhead
EP1302319A3 (fr) * 2001-10-12 2004-01-02 Eastman Kodak Company Actionneur thermique pour appareil de formation de gouttes à la demande et procédé pour consommation réduite d'énergie
EP1510342A1 (fr) * 2003-09-01 2005-03-02 Fuji Photo Film Co., Ltd. Tête jet d'encre et appareil d'enregistrement à jet d'encre
US7270403B2 (en) 2003-09-01 2007-09-18 Fujifilm Corporation Inkjet head and inkjet recording apparatus
WO2005102707A1 (fr) * 2004-04-14 2005-11-03 Eastman Kodak Company Dispositif et procede de regulation de la trajectoire d'une gouttelette
US7364277B2 (en) 2004-04-14 2008-04-29 Eastman Kodak Company Apparatus and method of controlling droplet trajectory

Also Published As

Publication number Publication date
CA1319561C (fr) 1993-06-29
EP0354706A3 (fr) 1990-08-01
JPH0288246A (ja) 1990-03-28

Similar Documents

Publication Publication Date Title
US5023625A (en) Ink flow control system and method for an ink jet printer
US5155498A (en) Method of operating an ink jet to reduce print quality degradation resulting from rectified diffusion
EP0739742B1 (fr) Dispositif d'enregistrement à jet liquide capable de mieux enregistrer une densité d'image en demi-teinte
EP0580154B1 (fr) Procédé pour former des gouttelettes d'encre dans une imprimante du type à jet d'encre et appareil d'enregistrement de ce type
EP0787589B1 (fr) Tête d'enregistrement à jet d'encre
EP0437106B1 (fr) Méthode et appareil pour imprimer avec des gouttelettes d'encre de différentes grosseurs utilisant une tête d'impression à jet d'encre générant des gouttelettes à la demande
EP1620269B1 (fr) Appareil de mise en forme/reproduction d'images pourvu d'une tete d'impression fonctionnant par le biais de forme d'onde d'activation amelioree
US4492968A (en) Dynamic control of nonlinear ink properties for drop-on-demand ink jet operation
CA1319561C (fr) Systeme de controle de debit d'encre et methode destinee a une imprimante a jet d'encre
JPH05201024A (ja) インクジェットプリントヘッド及びインクジェットプリンタ
JP3763200B2 (ja) インクジェット式記録装置
US6419336B1 (en) Ink ejector
EP0271904B1 (fr) Méthode d'enregistrement par injection de liquide
US6609784B2 (en) Ink jet recording device and a method for designing the same
JP2003237066A (ja) ヘッド駆動制御装置及び画像記録装置
US6450602B1 (en) Electrical drive waveform for close drop formation
JPH05338165A (ja) 液体噴射記録ヘッドの駆動方法
JP4187150B2 (ja) 液滴吐出ヘッドおよび画像形成装置
JPH1029321A (ja) インクジェットプリント装置およびプリント方法
US8567914B2 (en) Liquid ejecting head and liquid ejecting apparatus
JP3554110B2 (ja) インクジェット記録装置
JP2002178510A (ja) インクジェット記録装置
JP2004058300A (ja) インクジェット記録装置
JP2003127370A (ja) インクジェット式記録装置
JP3959704B2 (ja) 液体噴射装置

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): DE FR GB IT

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

RHK1 Main classification (correction)

Ipc: B41J 2/045

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): DE FR GB IT

17P Request for examination filed

Effective date: 19901220

17Q First examination report despatched

Effective date: 19920804

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19930316