ES2076197T3 - Aparato para la impresion por chorros de tinta. - Google Patents

Aparato para la impresion por chorros de tinta.

Info

Publication number
ES2076197T3
ES2076197T3 ES89124077T ES89124077T ES2076197T3 ES 2076197 T3 ES2076197 T3 ES 2076197T3 ES 89124077 T ES89124077 T ES 89124077T ES 89124077 T ES89124077 T ES 89124077T ES 2076197 T3 ES2076197 T3 ES 2076197T3
Authority
ES
Spain
Prior art keywords
unit
recovery
ink
endless tape
head unit
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
ES89124077T
Other languages
English (en)
Inventor
Yasushi Murayama
Tomohiro Aoki
Takashi Uchida
Tatsuo Mitomi
Masaharu Nemura
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
Priority claimed from JP63334754A external-priority patent/JP2733276B2/ja
Priority claimed from JP63334747A external-priority patent/JP2728914B2/ja
Priority claimed from JP63334755A external-priority patent/JP2733277B2/ja
Priority claimed from JP63331040A external-priority patent/JP2728913B2/ja
Priority claimed from JP33475388A external-priority patent/JP2733275B2/ja
Priority claimed from JP33103988A external-priority patent/JPH02179752A/ja
Application filed by Canon Inc filed Critical Canon Inc
Application granted granted Critical
Publication of ES2076197T3 publication Critical patent/ES2076197T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005Typewriters 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
    • B41J2/01Ink jet
    • B41J2/135Nozzles
    • B41J2/165Prevention or detection of nozzle clogging, e.g. cleaning, capping or moistening for nozzles
    • B41J2/16585Prevention or detection of nozzle clogging, e.g. cleaning, capping or moistening for nozzles for paper-width or non-reciprocating print heads
    • B41J2/16588Print heads movable towards the cleaning unit
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J11/00Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
    • B41J11/009Detecting type of paper, e.g. by automatic reading of a code that is printed on a paper package or on a paper roll or by sensing the grade of translucency of the paper
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J11/00Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
    • B41J11/0095Detecting means for copy material, e.g. for detecting or sensing presence of copy material or its leading or trailing end
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005Typewriters 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
    • B41J2/01Ink jet
    • B41J2/135Nozzles
    • B41J2/165Prevention or detection of nozzle clogging, e.g. cleaning, capping or moistening for nozzles
    • B41J2/16517Cleaning of print head nozzles
    • B41J2/1652Cleaning 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J29/00Details of, or accessories for, typewriters or selective printing mechanisms not otherwise provided for
    • B41J29/17Cleaning arrangements
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005Typewriters 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
    • B41J2/01Ink jet
    • B41J2/135Nozzles
    • B41J2/165Prevention or detection of nozzle clogging, e.g. cleaning, capping or moistening for nozzles
    • B41J2/16517Cleaning of print head nozzles
    • B41J2/16535Cleaning of print head nozzles using wiping constructions
    • B41J2/16541Means to remove deposits from wipers or scrapers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005Typewriters 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
    • B41J2/01Ink jet
    • B41J2/17Ink jet characterised by ink handling
    • B41J2/1707Conditioning of the inside of ink supply circuits, e.g. flushing during start-up or shut-down
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2202/00Embodiments of or processes related to ink-jet or thermal heads
    • B41J2202/01Embodiments of or processes related to ink-jet heads
    • B41J2202/12Embodiments of or processes related to ink-jet heads with ink circulating through the whole print head

Landscapes

  • Ink Jet (AREA)

Abstract

SE HA DESCUBIERTO UN APARATO PARA IMPRIMIR CON CHORRO DE TINTA CAPAZ DE REALIZAR UNA OPERACION PARA RECUPERAR LA CABEZA IMPRESORA DE CHORRO DE TINTA DE UN MODO SEGURO. PARA ESTO EL APARATO POSEE UNA CINTA SIN FIN PARA TRANSPORTAR POR ELECATRACCION ELECTROSTATICA UNA HOJA DE IMPRESION; UN CARGADOR PARA LA CINTA SIN FIN; UN LIMPIADOR PARA LA CINTA SIN FIN; UNA UNIDAD DE CABEZA DE IMPRESION CON MULTITUD DE CABEZAS DE CHORRO DE TINTA DE LINEA COMPLETA; UNA UNIDAD DE RECUPERACION QUE TENGA UNA HOJA DE LIMPIEZA Y UN MIEMBRO DE ABSORCION DE TINTA MOVIBLE ENTRE LAS POSICIONES DE RECUPERACION Y DE ESTADO DE ESPERA; Y UN MECANISMO PARA MOVER LA UNIDAD DE CABEZA A UNA POSICION DE IMPRESION, UNA POSICION DE RECUPERACION O UNA POSICION DE INTRODUCCION DE UNIDAD DE RECUPERACION Y MOVER LA UNIDAD DE RECUPERACION EN RELACION A LA UNIDAD DE CABEZA DE IMPRESION; EN QUE LA UNIDAD DE CABEZA, LA UNIDAD DE RECUPERACION Y EL MECANISMO DE MOVIMIENTO SE INTEGRAN EN UNA UNIDAD DESMONTABLE.
ES89124077T 1988-12-30 1989-12-28 Aparato para la impresion por chorros de tinta. Expired - Lifetime ES2076197T3 (es)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP63334754A JP2733276B2 (ja) 1988-12-30 1988-12-30 インクジェット記録装置
JP63334747A JP2728914B2 (ja) 1988-12-30 1988-12-30 インクジェット記録装置
JP63334755A JP2733277B2 (ja) 1988-12-30 1988-12-30 インクジェット記録装置
JP63331040A JP2728913B2 (ja) 1988-12-30 1988-12-30 インクジェット記録装置
JP33475388A JP2733275B2 (ja) 1988-12-30 1988-12-30 画像記録装置
JP33103988A JPH02179752A (ja) 1988-12-30 1988-12-30 インクジェット記録装置

Publications (1)

Publication Number Publication Date
ES2076197T3 true ES2076197T3 (es) 1995-11-01

Family

ID=27554628

Family Applications (1)

Application Number Title Priority Date Filing Date
ES89124077T Expired - Lifetime ES2076197T3 (es) 1988-12-30 1989-12-28 Aparato para la impresion por chorros de tinta.

Country Status (4)

Country Link
US (1) US5055861A (es)
EP (2) EP0583016B1 (es)
DE (2) DE68928318T2 (es)
ES (1) ES2076197T3 (es)

Families Citing this family (55)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5262872A (en) * 1985-03-28 1993-11-16 Canon Kabushiki Kaisha Image forming apparatus with means for error detection
DK0419192T3 (da) * 1989-09-18 1994-05-24 Canon Kk Blækstrålehoved og blækstråleregistreringsapparat
US5225853A (en) * 1990-02-02 1993-07-06 Canon Kabushiki Kaisha Recording apparatus with conveyor cleaning mechanism
ATE124331T1 (de) * 1990-02-02 1995-07-15 Canon Kk Tintenstrahlaufzeichnungsapparat und tintenstrahlaufzeichnungskopf.
DE69109894T2 (de) * 1990-02-02 1995-11-30 Canon Kk Tintenstrahl-Aufzeichnungsgerät.
DE69102081T2 (de) * 1990-02-13 1995-01-05 Canon Kk Tintenstrahlaufzeichnungsvorrichtung.
EP0442471B1 (en) * 1990-02-13 1996-01-03 Canon Kabushiki Kaisha Ink jet recording apparatus
DE69128204T2 (de) 1990-02-13 1998-03-26 Canon Kk Farbstrahlaufzeichnungsvorrichtung
JP2816217B2 (ja) * 1990-02-21 1998-10-27 キヤノン株式会社 記録装置
JP2891796B2 (ja) 1990-04-17 1999-05-17 キヤノン株式会社 被記録材を搬送するための搬送装置、および、その搬送装置を備える記録装置
JP3014815B2 (ja) * 1990-08-31 2000-02-28 キヤノン株式会社 インクジェット記録装置
JP2955384B2 (ja) * 1991-04-26 1999-10-04 キヤノン株式会社 画像記録装置
JP3016924B2 (ja) * 1991-10-02 2000-03-06 キヤノン株式会社 記録装置
US5701146A (en) * 1991-10-18 1997-12-23 Canon Kabushiki Kaisha Ink head recovery method and apparatus
US6116728A (en) * 1992-02-26 2000-09-12 Canon Kabushiki Kaisha Ink jet recording method and apparatus and recorded matter
CN1096943C (zh) 1992-02-26 2002-12-25 佳能株式会社 喷墨织物印刷方法及其印刷得到的材料
US5287123A (en) * 1992-05-01 1994-02-15 Hewlett-Packard Company Preheat roller for thermal ink-jet printer
US5296873A (en) * 1992-05-01 1994-03-22 Hewlett-Packard Company Airflow system for thermal ink-jet printer
US5456543A (en) * 1992-05-01 1995-10-10 Hewlett-Packard Company Printer motor drive with backlash control system
US5329295A (en) * 1992-05-01 1994-07-12 Hewlett-Packard Company Print zone heater screen for thermal ink-jet printer
US5399039A (en) * 1992-05-01 1995-03-21 Hewlett-Packard Company Ink-jet printer with precise print zone media control
US5406316A (en) * 1992-05-01 1995-04-11 Hewlett-Packard Company Airflow system for ink-jet printer
DE69310994T2 (de) * 1992-05-01 1997-10-02 Hewlett Packard Co Wärme-Tintenstrahldrucker mit einem Heizelement, dem variable Wärmeenergie für unterschiedliche Druckmedien zugeführt wird
US5479199A (en) * 1992-05-01 1995-12-26 Hewlett-Packard Company Print area radiant heater for ink-jet printer
DE69304774T2 (de) * 1992-05-01 1997-02-20 Hewlett Packard Co Heizgebläseanordnung in einem Farbstrahldrucker
US5367326A (en) * 1992-10-02 1994-11-22 Xerox Corporation Ink jet printer with selective nozzle priming and cleaning
DE69328290T2 (de) * 1992-12-22 2000-10-26 Canon K.K., Tokio/Tokyo Papierausgabegerät,Aufzeichnungsgerät,Leitgerät und ein Aufzeichnungs- und Lesegerät, welches dieses beinhaltet
US6426807B1 (en) 1993-01-19 2002-07-30 Canon Kabushiki Kaisha Light guide, illuminating device having the light guide, and image reading device and information processing apparatus having the illuminating device
TW305035B (es) * 1993-01-19 1997-05-11 Canon Kk
JPH06320744A (ja) * 1993-04-19 1994-11-22 Xerox Corp 全巾インクジェットプリンタ用の湿式拭い保守装置
US5581289A (en) * 1993-04-30 1996-12-03 Hewlett-Packard Company Multi-purpose paper path component for ink-jet printer
US5406321A (en) * 1993-04-30 1995-04-11 Hewlett-Packard Company Paper preconditioning heater for ink-jet printer
US5461408A (en) * 1993-04-30 1995-10-24 Hewlett-Packard Company Dual feed paper path for ink-jet printer
US5534897A (en) * 1993-07-01 1996-07-09 Xerox Corporation Ink jet maintenance subsystem
US20010033308A1 (en) * 1994-03-11 2001-10-25 Hitoshi Fujimoto Recovering apparatus for recovering a status of an ink jet recording head
NL9401941A (nl) * 1994-11-21 1996-07-01 Techniku B V Inrichting voor het reinigen en afdichten van een drukkop, een drukinrichting voorzien van een dergelijke inrichting, alsmede een werkwijze voor het toepassen daarvan.
US5774141A (en) * 1995-10-26 1998-06-30 Hewlett-Packard Company Carriage-mounted inkjet aerosol reduction system
US6315468B2 (en) * 1997-01-30 2001-11-13 Seiko Epson Corporation Ink jet recording apparatus with a platen gap regulator
JPH10324007A (ja) * 1997-05-26 1998-12-08 Tec Corp インクジェットプリンタ
EP0884185B1 (en) * 1997-06-11 2002-10-16 Canon Aptex Inc. Image forming method and apparatus therefor
JP4233632B2 (ja) 1997-06-11 2009-03-04 キヤノンファインテック株式会社 画像形成方法およびその装置
AUPQ056099A0 (en) * 1999-05-25 1999-06-17 Silverbrook Research Pty Ltd A method and apparatus (pprint01)
US6361162B1 (en) 2000-03-01 2002-03-26 Lexmark International, Inc. Method and apparatus for fixing ink to a print receiving medium
US6698878B1 (en) * 2000-05-30 2004-03-02 Hewlett-Packard Development Company, L.P. Cleaning medium for ink-jet hard copy apparatus
US7216968B2 (en) 2003-05-24 2007-05-15 Hewlett-Packard Development Company, L.P. Media electrostatic hold down and conductive heating assembly
JP4352837B2 (ja) * 2003-09-26 2009-10-28 ブラザー工業株式会社 インクジェットプリンタ
US6997549B2 (en) 2004-02-26 2006-02-14 Hewlett-Packard Development Company, L.P. Media hold down system
JP4588071B2 (ja) * 2005-11-07 2010-11-24 理想科学工業株式会社 インクジェット印刷装置及び印刷方法
JP4914627B2 (ja) * 2006-03-22 2012-04-11 富士フイルム株式会社 液体吐出ヘッドの吐出回復装置並びにこれを備えた画像形成装置
JP4586853B2 (ja) * 2008-01-29 2010-11-24 ブラザー工業株式会社 画像形成装置
JP4640479B2 (ja) 2008-09-26 2011-03-02 ブラザー工業株式会社 画像記録装置
JP4720925B2 (ja) * 2009-03-26 2011-07-13 ブラザー工業株式会社 インクジェット記録装置
JP5077381B2 (ja) * 2010-03-29 2012-11-21 ブラザー工業株式会社 液体吐出装置
JP5765891B2 (ja) 2010-05-06 2015-08-19 キヤノン株式会社 インクジェット記録装置
EP3323618B1 (en) * 2016-11-21 2021-04-14 Ricoh Company, Ltd. Liquid discharge apparatus

Family Cites Families (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1127227A (en) * 1977-10-03 1982-07-06 Ichiro Endo Liquid jet recording process and apparatus therefor
JPS55101462A (en) * 1979-01-30 1980-08-02 Canon Inc Cleaning protector for outlet orifice of recorder
US4207579A (en) * 1979-01-08 1980-06-10 The Mead Corporation Reciprocating paper handling apparatus for use in an ink jet copier
JPS55131882A (en) * 1979-04-02 1980-10-14 Canon Inc Electronic equipment
US4256408A (en) * 1979-07-30 1981-03-17 International Business Machines Corporation Dot matrix print head
JPS56148583A (en) * 1980-04-21 1981-11-18 Canon Inc Recording material
JPS57193369A (en) * 1981-05-26 1982-11-27 Tokyo Electric Co Ltd Ink jet type printing machine
US4559543A (en) * 1981-10-13 1985-12-17 Canon Kabushiki Kaisha Ink jet recording device modular frame
DE3220620A1 (de) * 1982-06-01 1983-12-01 Olympia Werke Ag, 2940 Wilhelmshaven Auffangbehaelter fuer verlusttinte in tintenschreibwerken
JPS5983664A (ja) * 1982-11-02 1984-05-15 Matsushita Electric Ind Co Ltd インクジエツトヘツドクリ−ニング装置
US4479136A (en) * 1983-02-17 1984-10-23 Exxon Research & Engineering Co. Cleaning system and method for ink jet printer
JPH0659736B2 (ja) * 1983-06-10 1994-08-10 キヤノン株式会社 インクジエツト記録装置
JPS59227460A (ja) * 1983-06-10 1984-12-20 Canon Inc インクジエツト記録装置
IT1159608B (it) * 1983-09-12 1987-03-04 Olivetti & Co Spa Dispositivo per comandare la rotazione di un rullo di scrittura di una macchina per scrivere
JPH0684081B2 (ja) * 1983-09-29 1994-10-26 キヤノン株式会社 吐出回復方法
JPS6082355A (ja) * 1983-10-12 1985-05-10 Canon Inc インクジエツト記録装置のキヤツピング装置
JPS6169646A (ja) * 1984-09-10 1986-04-10 Fuji Xerox Co Ltd 用紙搬送装置
DE3473132D1 (en) * 1984-09-18 1988-09-08 Mannesmann Tally Gmbh Matrix printer, in particular a matrix line printer
US4692778A (en) * 1985-03-28 1987-09-08 Canon Kabushiki Kaisha Image formation apparatus with a recording unit and paper feed cover and a sealing member
JP2521423B2 (ja) * 1985-03-28 1996-08-07 キヤノン株式会社 インクジエツト装置の回復方法
US4748459A (en) * 1985-07-25 1988-05-31 Canon Kabushiki Kaisha Ink jet recording apparatus and capping device
JPS6255146A (ja) * 1985-09-04 1987-03-10 Canon Inc インクジエツト記録装置
JP2614207B2 (ja) * 1985-10-30 1997-05-28 キヤノン 株式会社 インクジエツト記録装置
JPS62251145A (ja) * 1986-04-25 1987-10-31 Canon Inc インクジエツト記録装置

Also Published As

Publication number Publication date
DE68923861D1 (de) 1995-09-21
DE68928318T2 (de) 1998-02-19
EP0583016A3 (en) 1994-04-06
US5055861A (en) 1991-10-08
EP0583016A2 (en) 1994-02-16
DE68928318D1 (de) 1997-10-16
EP0376309B1 (en) 1995-08-16
EP0583016B1 (en) 1997-09-10
EP0376309A3 (en) 1991-03-06
DE68923861T2 (de) 1996-02-22
EP0376309A2 (en) 1990-07-04

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