EP0326428A2 - Ablagenrückgewinnungsverfahren für einen Tintenstrahlaufzeichnungskopf, Aufzeichnungskopf und mit diesem Verfahren betriebene Tintenstrahlaufzeichnungsvorrichtung - Google Patents

Ablagenrückgewinnungsverfahren für einen Tintenstrahlaufzeichnungskopf, Aufzeichnungskopf und mit diesem Verfahren betriebene Tintenstrahlaufzeichnungsvorrichtung Download PDF

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Publication number
EP0326428A2
EP0326428A2 EP89300848A EP89300848A EP0326428A2 EP 0326428 A2 EP0326428 A2 EP 0326428A2 EP 89300848 A EP89300848 A EP 89300848A EP 89300848 A EP89300848 A EP 89300848A EP 0326428 A2 EP0326428 A2 EP 0326428A2
Authority
EP
European Patent Office
Prior art keywords
ink
discharge
recording head
ink jet
jet recording
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.)
Granted
Application number
EP89300848A
Other languages
English (en)
French (fr)
Other versions
EP0326428B1 (de
EP0326428A3 (en
Inventor
Koji Terasawa
Hideki Yamaguchi
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Publication of EP0326428A2 publication Critical patent/EP0326428A2/de
Publication of EP0326428A3 publication Critical patent/EP0326428A3/en
Application granted granted Critical
Publication of EP0326428B1 publication Critical patent/EP0326428B1/de
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
    • 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
    • B41J2/17—Ink jet characterised by ink handling
    • B41J2/18—Ink recirculation systems
    • 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
    • B41J2/165—Prevention or detection of nozzle clogging, e.g. cleaning, capping or moistening for nozzles
    • B41J2/16517—Cleaning of print head nozzles
    • B41J2/1652—Cleaning of print head nozzles by driving a fluid through the nozzles to the outside thereof, e.g. by applying pressure to the inside or vacuum at the outside of the print head
    • 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
    • B41J2/165—Prevention or detection of nozzle clogging, e.g. cleaning, capping or moistening for nozzles
    • B41J2/16517—Cleaning of print head nozzles
    • B41J2/1652—Cleaning of print head nozzles by driving a fluid through the nozzles to the outside thereof, e.g. by applying pressure to the inside or vacuum at the outside of the print head
    • B41J2/16526—Cleaning of print head nozzles by driving a fluid through the nozzles to the outside thereof, e.g. by applying pressure to the inside or vacuum at the outside of the print head by applying pressure only

Definitions

  • This invention relates to a discharge recovery method for an ink jet recording head provided with dis­charge recovery means for recovery from unsatisfactory discharge of ink from the discharge openings of the ink jet recording head to thereby accomplish discharge recovery.
  • An ink jet recording apparatus is such that ink is supplied into a recording head, a drive element provided correspondingly to at least one ink discharge opening formed in the front surface of the recording head is driven on the basis of a recording data signal to thereby cause the ink to be discharge through the ink discharge opening and form a flying liquid droplet toward a recording medium and such liquid droplet is caused to adhere to the recording medium to thereby accomplish recording.
  • the drive element used for recording is used also as the drive element for pre-discharge, and there have been technical tasks left to be solved in the points which will be described later.
  • the drive element is used for the two purposes, and this is effective in the prevention of clogging or unsatisfactory discharge, but when unsatis­factory discharge has already occurred as may occur when recording is again effected from a long time of unused state, the effect of releasing it is not high.
  • Figure 1 is a schematic cross-sectional view showing an ink jet recording head to which the recovery method of the present invention is applied.
  • the reference numeral 1 designates a recording head carrying thereon various members which will be described later and discharging ink to record­ing paper or the like to thereby form ink droplets
  • the reference numeral 2 denotes a plurality of liquid paths provided in the fore end portion of the recording head 1
  • the reference numeral 3 designates heaters for recording as electro-thermal converting elements dis­posed at the bottom correspondingly to the liquid paths 2 and supplied with electric power during recording to generate heat energy utilized for ink discharge
  • the reference numeral 4 denotes a common liquid chamber communicating with the rear ends of the liquid paths 2 and supplying ink to them
  • the reference numeral 5 designates a heater for applying pressure disposed at the bottom of the common liquid chamber 4 as shown in Figure 2
  • the reference numeral 6 denotes a check valve provided in an ink supply portion 7 for the common liquid chamber 4
  • the reference numeral 8 designates a flexible cable containing therein a driving signal line connected to each of the heaters 3 for recording
  • the reference numeral 9 de
  • the present invention can be suitably applied to an ink jet recording apparatus of the type in which a recording head and an ink tank for containing therein ink to be supplied to the recording head are integrally and removably carried relative to a carriage.
  • a recording head and an ink tank for containing therein ink to be supplied to the recording head are integrally and removably carried relative to a carriage.
  • the ink tank may be removably mounted.
  • the check valve 6 is made of plastic film, metal foil or a shape memorizing alloy on the boundary surface between the ink supply portion 7 and the common liquid chamber 4, and prevents the ink from flowing from the common liquid chamber 4 back to the ink supply portion 7 side when bubbles are made in the common liquid chamber 4 by the heater 5 for applying pressure.
  • plastic film, metal foil or the like is used for the check valve 6, if the plate thickness is of the order of 50 ⁇ m, there will be obtained a check valve excellent in the responsiveness to the fluctuation of applied pressure.
  • the ink supplied from the ink supply portion 7 fills the common liquid chamber 4 and the liquid paths 2.
  • the heater 5 for applying pressure is not supplied with electric power on the basis of a signal generated by means for generating a recording signal, but only the heaters 3 for recording are supplied with electric power in conformity with the recording signal.
  • bubbles are created by film boiling, and with these bubbles as the pressure force, ink droplets fly out from the fore ends of the liquid paths 2 toward recording paper.
  • New ink is supplied into the liquid paths in which the bubbles have been produced, due to negative pressure created in the liquid paths with the flight of the ink droplets, and an amount of ink corresponding to the decrement is supplied form the ink supply portion 7 to the common liquid chamber 4 through the check valve 6.
  • the check valve is not restricted to the construction of Figure 1, but may also be of a structure as shown in Figure 4 wherein the fore end portion thereof is formed by an elastic member adapted to be closed by ink pressure and a filter 11 for removing any dust contained in the ink is provided in the ink paths. By doing so, any dust which may cause clogging of the discharge openings to be common liquid chamber 4 and of the liquid paths can be removed.
  • the check valve can also be designed as other construction than a valve mechanism, as shown in Figure 5. That is, a heater 12 for checking is provided on the bottom surface of the common liquid chamber 4 which is near the outlet of the ink supply portion 7.
  • the reference numeral 9 designates a lead connected to the heater 5 for applying pressure and the heater 12 for checking.
  • electric power is supplied to the heater 12 for checking for the order of 10 ⁇ sec. to increase the heater temperature to several hundred degrees, and thereby film-boils the ink on the upper surface of the heater 5 for applying pressure.
  • a bubble 13 is created as shown in Figure 6 and the outlet of the ink supply portion 7 can be closed. This bubble 13 disappears in 20 - 30 ⁇ sec. by cutting of the supply of electric power to the heater 12 for checking, and the sub­sequent supply of the ink to the common liquid chamber 4 can be accomplished without any hindrance.
  • a slit opening 16 may be provided at the fore end of the ink supply portion 7, as shown in Figure 7, and may be used instead of the heater 12 for checking having a length greater than the widthwise dimension of the slit opening.
  • the recovery mode is automatically assumed after the switch operation of the recording apparatus during unsatisfactory discharge or a pre­determined amount of discharging operation, whereby the heater 5 for applying pressure is heated and the check valve 6 is operated by a bubble resulting therefrom and the air, the remaining bubble, etc. in the liquid paths are removed as shown in Figure 2.
  • the heater 5 for applying pressure is turned off, the created bubble begins to disappear and negative pressure begins to be created in the common liquid chamber 4.
  • the check valve 6 is opened and also, the retraction of the meniscus of the liquid paths 2 is prevented by the meniscus holding force of about 50 ⁇ m of the discharge openings and the low flow path resistance of the ink supply portion having a large diameter relative to the inner diameter of the discharge openings of the liquid paths.
  • the heater 12 for checking is supplied with electric power by means for generating a checking signal and a bubble 13 is created as shown in Figure 6, whereby the ink supply to the common liquid chamber 4 is cut off.
  • the heater 5 for applying pressure is then supplied with electric power to cause a bubble to be created in the common liquid chamber 4 as shown in Figure 3, and the ink is forced into the respective liquid paths 2.
  • the heater 12 for checking is turned off and the ink supply portion 7 is connected to the common liquid chamber 4.
  • the heater 5 for applying pressure is then turned off, the bubble thereby disappears and negative pressure is created and thus, the ink flows from the ink supply portion 7 into the common liquid chamber 4.
  • pressure is kept uniform with the meniscus of the discharge openings maintained.
  • the heater 12 for checking is supplied with electric power and a bubble 13 is created as shown in Figure 6, whereby the ink supply to the common liquid chamber 4 is cut off.
  • the heater 5 for applying pressure is then supplied with electric power to thereby cause a bubble to be created in the common liquid chamber 4 as shown in Figure 3, and the ink is forced into the respective liquid paths 2.
  • the heater 12 for checking is turned off and the ink supply portion 7 is connected to the common liquid chamber 4.
  • the heater 5 for applying pressure is then turned off, the bubble thereby disappears and negative pressure is created, and the ink flows from the ink supply portion 7 into the common liquid chamber 4.
  • pressure is kept uniform with the meniscus of the discharge openings of the liquid paths maintained.
  • discharge recovery can be achieved by controlling only the heater in the common liquid chamber, and the amount of ink discharged from the discharge openings can be made very small. Also, since the present invention does not depend on any mechanical construction, the recovery time depends only on the refill of the ink and the operating time can be made very short, and can be kept within such a degree of time that the use of the recovery mode cannot be recognized by the user.
  • the control of the supply of electric power can be accomplished not only by a method using a variation in the pulse width, but also by a reduction in the on-duty or a reduction in the voltage applied to the heater resistor.
  • the heaters for recording are designed such that as the condition of the input pulse for forming an ink droplet, they are controlled so that as shown in U.S. Patent No. 4,345,262 issued to Shirato, the input cycle is at least three times a pulse width of 0.1 ⁇ sec. - 500 ⁇ sec., but according to the present embodiment, by using the heater for applying pressure discretely from the heaters for recording, it becomes possible to apply a signal which is not subjected to said limitation, and this leads to the merit that the range of the selection of the driving condition of the heater for applying pressure becomes wider.
  • FIG 11 schematically shows the construction of a control system for controlling the supply of electric power to the heaters.
  • the output of a control unit 16 is connected to the heater 5 for applying pressure, and this control unit 16 uses the output signal of a temperature detecting thermistor (Th) 18 provided in the head 1 as a feedback signal and controls the power supply time by the set time of a timer 17.
  • the reference numeral 19 designates an ink supply source.
  • Figure 12 shows the position of the head when discharge recovery is effected.
  • a platen 20 for conveying recording paper 21 as a recording medium in conformity with the printing situation is rotatably supported on the body, and a guide shaft 22 is fixedly disposed parallel to the front portion of the platen 20 and in a horizontal direction.
  • a carriage 23 is slidably engaged with the guide shaft 22, and is reciprocally moved on the guide shaft 22 in conformity with the printing condition, with a carriage motor, not shown, as a drive source.
  • the recording head 1 is mounted on the carriage 23, and discharge recovery is executed when the recording head 1 is in its home position (H.P.).
  • the reference numeral 24 designates a wiping blade having a plate-like elastic member for wiping away the ink adhering to the surface of the head after the completion of the discharge recovery when the carriage 23 is moved.
  • the discharge recovery operation according to the present invention is per­formed within a very short time and therefore, the time required for the discharge recovery operation, including the time required for returning the carriage 23 to its home position, may be less than one second. Accordingly, the user will not be caused to feel actually the interruption of recording.
  • Figure 13 is a flow chart in a case where the discharge recovery according to the present invention is automatically effected.
  • step 31 After the power source switch is closed, the recording operation is performed (step 31), and in that process, whether a period during which the dis­charge recovery operation is necessary has come is judged (step 32).
  • step 33 the carriage 23 is returned to its home position (step 33), and electric power is supplied to the heater 5 (or depending on the timing of Figure 10, to the heater 12 and the heater 5) and the discharge recovery operation by the bubble created thereby is performed (step 34).
  • step 34 the carriage 23 is moved rightwardly as viewed in Figure 12, and in that process, the surface of the head (which is near the discharge openings) is cleaned by the blade 24 (step 35). After this treatment, return is made to the step 31, where the recording operation is resumed.
  • the judgment condition has been "printing for a predetermined time”
  • it may also be “stoppage of printing for a predetermined time”.
  • the "recording operation" of the step 31 after the closing of the power source switch has been made reliable, but a recovery operation of the same content as the step 34 may be inserted before the step 31. If this is done, even if the apparatus remains unused for a long time before the closing of the power source switch, unsatisfactory discharge will not be caused in the recording at the step 31.
  • step 32 may be the condition for the completion of printing of a predetermined number of sheets (or a predetermined number of pages), instead of the process content of Figure 13.
  • step 36 may be provided with a view to remove any remaining air created by the heaters 3 for recording with the rise of the head temperature caused by the continuous use of the nozzle.
  • the pre-discharge operation is effected a plurality of times as one recovery opera­tion, and in order to make the amount of heat energy produced by the heater for applying pressure in one pre-discharge operation greater than the amount of heat energy produced by the heaters for recording in one discharge operation, where the materials and the film thicknesses of said heaters are the same, design is made such that the following relation is established when the area of the heaters k for recording is a k and the area of the heater for applying pressure is b: (N is the number of heaters for recording.) and more preferably, whereby-the frequency of application of the pre-discharge signal could be reduced.
  • the recording head schematically shown in Figure 15 is a head of the type in which ink is discharged in a direction substantially parallel to the surface of the heat generating portion of the heaters for recording (the direction of arrow AA).
  • the length of said heat generating portion in the direction of discharge (the arrow AA) is l k and the spacing between the heaters 3 for recording and the heater 5 for applying pressure is m k , it is desirable to determine the positions of these heaters so as to satisfy the relation that m k ⁇ l k or m k ⁇ ⁇ a k .
  • a recording head to which the present invention is applicable in a head of the type which discharges ink in a direction substantially perpen­dicular to the surface of the heat generating portion of the heaters for recording (the direction of arrow BB in Figure 16), it is rarely the case that the stagnation of bubbles occurs at a position greatly spaced apart from the surface of the heat generating portion and therefore, the above-described position is not restrictive, but it is still preferable to provide a heater for applying pressure at a similar position.
  • the present invention by providing the heater for applying pressure discretely from the heaters for recording, unsatisfactory discharge which could not be released by the conventional pre-discharge operation can be released to thereby accomplish a good discharge recovery operation without shortening the life of the heaters for recording.
  • the heater for applying pressure can be made into desired structure and moreover can be disposed more adjacent to the heaters for recording and therefore, it becomes possible to produce a pressure force at a location whereat bubbles or foreign materials are ready to stagnate, and the efficiency of discharge recovery can be remarkably improved without discharging a great deal of ink.

Landscapes

  • Ink Jet (AREA)
  • Particle Formation And Scattering Control In Inkjet Printers (AREA)
EP19890300848 1988-01-27 1989-01-27 Ablagenrückgewinnungsverfahren für einen Tintenstrahlaufzeichnungskopf, Aufzeichnungskopf und mit diesem Verfahren betriebene Tintenstrahlaufzeichnungsvorrichtung Expired - Lifetime EP0326428B1 (de)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP1649188 1988-01-27
JP16491/88 1988-01-27
JP158321/88 1988-06-27
JP15832188 1988-06-27
JP13592/89 1989-01-23
JP1013592A JP2775275B2 (ja) 1988-01-27 1989-01-23 インクジェット記録ヘッドの吐出回復方法並びに該方法を採用した記録ヘッドおよびインクジェット記録装置

Publications (3)

Publication Number Publication Date
EP0326428A2 true EP0326428A2 (de) 1989-08-02
EP0326428A3 EP0326428A3 (en) 1990-03-28
EP0326428B1 EP0326428B1 (de) 1995-07-19

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Family Applications (1)

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EP19890300848 Expired - Lifetime EP0326428B1 (de) 1988-01-27 1989-01-27 Ablagenrückgewinnungsverfahren für einen Tintenstrahlaufzeichnungskopf, Aufzeichnungskopf und mit diesem Verfahren betriebene Tintenstrahlaufzeichnungsvorrichtung

Country Status (3)

Country Link
EP (1) EP0326428B1 (de)
JP (1) JP2775275B2 (de)
DE (1) DE68923461T2 (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0591989A2 (de) * 1992-10-09 1994-04-13 Canon Kabushiki Kaisha Tintenstrahldruckkopf und damit versehene Druckvorrichtung
EP0764527A2 (de) * 1995-09-22 1997-03-26 Canon Kabushiki Kaisha Verfahren zum Ausstossen von Flüssigkeit und Flüssigkeitsausstosskopf dafür
EP0811489A2 (de) * 1996-06-07 1997-12-10 Canon Kabushiki Kaisha Verfahren zum Ausstossen von Flüssigkeit, Flüssigkeitsausstosskopf, Flüssigkeitsausstosskopfkassette und Vorrichtung zum Ausstossen von Flüssigkeit
WO2001003936A1 (fr) * 1999-07-12 2001-01-18 Copyer Co., Ltd. Dispositif de formation d'image de systeme a jet d'encre
AU743359B2 (en) * 1995-09-22 2002-01-24 Canon Kabushiki Kaisha Liquid ejection method and liquid ejection head therefor
EP1205307A2 (de) * 2000-11-13 2002-05-15 Canon Kabushiki Kaisha Tintenstrahldruckapparat und Verfahren zum Vorausstossen
CN102105306A (zh) * 2008-05-25 2011-06-22 惠普开发有限公司 具有用于在注抽期间供气态气泡、淤泥物和/或污染物通过的一个或多个孔的流体喷射精确分配设备

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6715855B2 (en) 2001-05-23 2004-04-06 Fuji Xerox Co., Ltd. Ink jet recording device and bubble removing method

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4176363A (en) * 1977-06-25 1979-11-27 Konishiroku Photo Industry Co., Ltd. Ink jet printing apparatus
US4514742A (en) * 1980-06-16 1985-04-30 Nippon Electric Co., Ltd. Printer head for an ink-on-demand type ink-jet printer
JPS62240558A (ja) * 1986-04-14 1987-10-21 Canon Inc 液体噴射記録ヘツド
US4719472A (en) * 1982-06-18 1988-01-12 Canon Kabushiki Kaisha Ink jet recording head

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS585260A (ja) * 1981-07-01 1983-01-12 Canon Inc インクジェット記録方法
JPS58171964A (ja) * 1982-04-02 1983-10-08 Canon Inc インクジエツトプリンタ
JPS61249759A (ja) * 1985-04-30 1986-11-06 Canon Inc 印字装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4176363A (en) * 1977-06-25 1979-11-27 Konishiroku Photo Industry Co., Ltd. Ink jet printing apparatus
US4514742A (en) * 1980-06-16 1985-04-30 Nippon Electric Co., Ltd. Printer head for an ink-on-demand type ink-jet printer
US4719472A (en) * 1982-06-18 1988-01-12 Canon Kabushiki Kaisha Ink jet recording head
JPS62240558A (ja) * 1986-04-14 1987-10-21 Canon Inc 液体噴射記録ヘツド

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, vol. 12, no. 113 (M-683)[2960], 9th April 1988; & JP-A-62 240 558 (SHINICHI HIRASAWA) 21-10-1987 *

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6241350B1 (en) 1992-10-09 2001-06-05 Canon Kabushiki Kaisha Ink jet printing head and printing apparatus using same
EP0591989A2 (de) * 1992-10-09 1994-04-13 Canon Kabushiki Kaisha Tintenstrahldruckkopf und damit versehene Druckvorrichtung
US5777649A (en) * 1992-10-09 1998-07-07 Canon Kabushiki Kaisha Ink jet printing head with buffering chamber wall having gas transmitting property and printing apparatus using same
EP0591989A3 (en) * 1992-10-09 1996-06-26 Canon Kk Ink jet printing head and printing apparatus using same
EP0921000A3 (de) * 1992-10-09 1999-10-20 Canon Kabushiki Kaisha Tintenstrahldrukkopf und damit versehene Druckvorrichtung
EP0764527A2 (de) * 1995-09-22 1997-03-26 Canon Kabushiki Kaisha Verfahren zum Ausstossen von Flüssigkeit und Flüssigkeitsausstosskopf dafür
US6851779B2 (en) 1995-09-22 2005-02-08 Canon Kabushiki Kaisha Liquid ejection method and liquid ejection head therefor
AU743359B2 (en) * 1995-09-22 2002-01-24 Canon Kabushiki Kaisha Liquid ejection method and liquid ejection head therefor
US6709090B2 (en) 1995-09-22 2004-03-23 Canon Kabushiki Kaisha Liquid ejection method and liquid ejection head therefor
EP0764527A3 (de) * 1995-09-22 1997-09-03 Canon Kk Verfahren zum Ausstossen von Flüssigkeit und Flüssigkeitsausstosskopf dafür
EP0811489A3 (de) * 1996-06-07 1998-07-29 Canon Kabushiki Kaisha Verfahren zum Ausstossen von Flüssigkeit, Flüssigkeitsausstosskopf, Flüssigkeitsausstosskopfkassette und Vorrichtung zum Ausstossen von Flüssigkeit
EP0811489A2 (de) * 1996-06-07 1997-12-10 Canon Kabushiki Kaisha Verfahren zum Ausstossen von Flüssigkeit, Flüssigkeitsausstosskopf, Flüssigkeitsausstosskopfkassette und Vorrichtung zum Ausstossen von Flüssigkeit
US6213592B1 (en) 1996-06-07 2001-04-10 Canon Kabushiki Kaisha Method for discharging ink from a liquid jet recording head having a fluid resistance element with a movable member, and head, head cartridge and recording apparatus using that method
WO2001003936A1 (fr) * 1999-07-12 2001-01-18 Copyer Co., Ltd. Dispositif de formation d'image de systeme a jet d'encre
US6817694B1 (en) 1999-07-12 2004-11-16 Canon Finetech Inc. Ink jet system image forming device
EP1205307A3 (de) * 2000-11-13 2003-06-25 Canon Kabushiki Kaisha Tintenstrahldruckapparat und Verfahren zum Vorausstossen
EP1205307A2 (de) * 2000-11-13 2002-05-15 Canon Kabushiki Kaisha Tintenstrahldruckapparat und Verfahren zum Vorausstossen
US7029095B2 (en) 2000-11-13 2006-04-18 Canon Kabushiki Kaisha Ink jet printing apparatus and preliminary ejecting method
US7413282B2 (en) 2000-11-13 2008-08-19 Canon Kabushiki Kaisha Ink jet printing apparatus and preliminary ejecting method
CN102105306A (zh) * 2008-05-25 2011-06-22 惠普开发有限公司 具有用于在注抽期间供气态气泡、淤泥物和/或污染物通过的一个或多个孔的流体喷射精确分配设备
CN102105306B (zh) * 2008-05-25 2013-09-25 惠普开发有限公司 具有用于在注抽期间供气态气泡、淤泥物和/或污染物通过的一个或多个孔的流体喷射精确分配设备

Also Published As

Publication number Publication date
EP0326428B1 (de) 1995-07-19
JPH0278567A (ja) 1990-03-19
DE68923461D1 (de) 1995-08-24
JP2775275B2 (ja) 1998-07-16
DE68923461T2 (de) 1996-01-25
EP0326428A3 (en) 1990-03-28

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