EP0749836A1 - Procédé et dispositif pour tenir propre les buses d'une tête à jet d'encre - Google Patents

Procédé et dispositif pour tenir propre les buses d'une tête à jet d'encre Download PDF

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Publication number
EP0749836A1
EP0749836A1 EP96250110A EP96250110A EP0749836A1 EP 0749836 A1 EP0749836 A1 EP 0749836A1 EP 96250110 A EP96250110 A EP 96250110A EP 96250110 A EP96250110 A EP 96250110A EP 0749836 A1 EP0749836 A1 EP 0749836A1
Authority
EP
European Patent Office
Prior art keywords
ink
solvent
nozzles
nozzle
arrangement according
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
EP96250110A
Other languages
German (de)
English (en)
Other versions
EP0749836B1 (fr
Inventor
Ulrich Hetzer
Jürgen Quass
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.)
Francotyp Postalia GmbH
Original Assignee
Francotyp Postalia GmbH
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 Francotyp Postalia GmbH filed Critical Francotyp Postalia GmbH
Publication of EP0749836A1 publication Critical patent/EP0749836A1/fr
Application granted granted Critical
Publication of EP0749836B1 publication Critical patent/EP0749836B1/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
    • 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
    • B41J2/16552—Cleaning of print head nozzles using cleaning fluids

Definitions

  • the invention relates to a method and an arrangement for keeping the nozzles of an ink print head clean, in particular an ink print head with large numbers of nozzles.
  • ink printheads are intended for use in small, fast printers, which in turn are part of modern machines for franking mail or for printing addresses or for product labeling.
  • printing is carried out as a single print in one pass through the recording medium. Because of this much larger printing width - approximately one inch - the number of ink nozzles to be arranged one below the other is considerably larger than that of ink print heads for office printers.
  • An ink jet printer with a plurality of nozzles is known, compare DE 33 11 735 A1, in which a determination device detects when one or more nozzles is in an unused state for a predetermined period of time, and in which the determination result is evaluated using a control device and ink ejection is caused for the applicable nozzles.
  • a signal measuring device the printing pause time is measured and with a purging device, the purging of the nozzles used for printing is brought about before printing if the printing pause exceeds a predetermined time period.
  • the printing pauses have to be relatively short, therefore the writing operation has to be interrupted for cleaning, which reduces the operating time of the printer and this cleaning principle significantly increases ink consumption.
  • a cover for the nozzles of a vacuum ink print head working with fast-drying inks is also known, compare EP 0 173 939 A1.
  • the cover is intended on the one hand to prevent the ink from drying out at the nozzle ends during the printing pauses, and on the other hand to ensure that the ink meniscus is neither touched nor pushed back.
  • the cover has a circumferential sealing element and a membrane, which form a pressure chamber when the cover is placed on the nozzle surface.
  • the inherent tension of the membrane is chosen to be smaller than the surface tension of the ink menisci.
  • the purpose of the invention is to increase the reliability of ink heads of the type described in the introduction with little effort.
  • the invention has for its object to find a solution with which all the nozzles of an ink print head are protected against drying out both during printing operation and during printing breaks.
  • the nozzles should be largely protected from contamination by paper dust and cleaning should be possible if ink residues are deposited on the nozzle surface. According to the invention, this object is achieved according to the patent claims.
  • the proposed solution offers a number of advantages.
  • the microclimate of solvent vapors during the printing operation and predominantly also during the printing pauses equally protects all nozzles from drying out.
  • the anteroom has only a small volume, since the distance between the nozzle surface and the recording medium may not exceed 2 mm as a rule; consequently, no essential one occurs Solvent consumption and therefore no additional environmental pollution.
  • the solvent is usually colorless, so that shadowing caused by slightly escaping solvent vapors on the recording medium is prevented. If the solvent contains enough volatile components, the ink printhead temperature is sufficient for evaporation. Otherwise, the solvent is additionally heated when entering the anteroom. Due to the evaporation, the pressure in the anteroom will always be slightly higher than the outside atmosphere.
  • the vestibule is closed, rinsed and the detergent is sucked off and filtered.
  • the vestibule is expediently closed during longer pauses in printing.
  • the process is suitable for both ink printheads with piezo actuators and for ink printheads using bubble jet technology. In both cases it is possible to use parts of the ink print head to carry out the method.
  • the vestibule is formed by arranging the ink print head appropriately in its housing, which is required anyway, in that the nozzle surface is set back somewhat from the front wall of the housing.
  • the ink print head has rows of nozzles, adapted openings are provided in the front wall, the width b of which is greater than the diameter d of a nozzle opening.
  • the openings are expediently designed as elongated slots. But it can also be holes. Slots would be easier to make and clean.
  • the vestibule is connected to a container for solvents for the ink via at least one nozzle and associated channel. An area at the edge of the anteroom is trough-shaped. The solvent for the formation of the solvent vapors is admitted into this area via at least one nozzle.
  • This nozzle is designed in the same way as the ink nozzles and also has the same drive - pressure chamber with actuator. In this way, the solvent can be supplied in the desired fine dosage.
  • this part of the antechamber is designed as a capillary space.
  • the nozzle and supply is an advantageous component the ink printhead. But it is also possible to integrate them into the housing.
  • the other area of the vestibule is intended to receive the solvent vapors and covers the entire area in front of the ink nozzles.
  • the trough-shaped area is connected to the rest of the antechamber via slots.
  • a sealing cap is adjustably mounted adjacent to the housing so that it can be non-positively arranged in front of the front wall. The sequence of movements is designed so that a wiper lip coupled to the sealing cap is wiped over the openings / slots. Dust deposits are wiped off on the front wall.
  • a suction plate is interchangeably arranged in the sealing cap, with which the openings are tightly sealed. The suction plate can be made of foam or felt, so that liquid residues are sucked up from the openings during flushing processes in the anteroom and dripping is avoided.
  • the housing is usually closed with the sealing cap during longer pauses in printing.
  • at least one nozzle and its associated channel to the container with the solvent are larger than the other nozzles and their channels.
  • a valve is arranged in the channel to prevent unwanted solvent leakage.
  • a pump which is inserted in the solvent channel, is actuated for the rinsing process.
  • the detergent flows back into the solvent container through an exchangeable filter.
  • a heating device is arranged in the trough-shaped area to support the evaporation. It is also possible to arrange the heater around the nozzle. This heating device is particularly advantageous if a bubble jet ink print head is used, the ink of which is known to be mixed together on a water basis.
  • an ink print head 2 is mounted in a housing 1.
  • the ink print head 2 has four rows of nozzles 22 with nozzles 221 for ink 31 and nozzles 26, 261 for solvent 41.
  • a heating device 123 is used to generate solvent vapors 411.
  • Slot-shaped openings 111 are formed in the front wall 11 of the housing 1. The slots 111 are aligned with the nozzle rows 22 in the ink flight direction. The width b of a slit 111 is so much larger than the diameter d of a nozzle 221, 26 that the ink drops can pass through the slit 111 unhindered.
  • the diameter e of an enlarged nozzle 261 for solvent 41 is dimensioned such that the vestibule 12 is filled with solvent 41 and rinsed through sufficiently quickly.
  • the vestibule 12 is formed by the volume between the front wall 11 and the nozzle surface 21. 2
  • the ink 31 is fed from a container 3 via a common ink supply channel 251 to an individual ink supply channel 25 and from there into an ink pressure chamber 24.
  • the ink pressure chamber 24 is driven by actuators, not shown.
  • actuators not shown.
  • these are piezo converters or actuators.
  • With a bubble jet print head are heating resistors in the form of emitter resistors in transistor driver circuits.
  • the ink 31 passes from the ink pressure chamber 24 through a nozzle channel 23 to the nozzle or nozzle opening 221 and from there onto a recording medium.
  • the solvent 41 is passed from a container 4 via a solvent supply channel 29 to a solvent pressure chamber 28 and from there via a nozzle channel 27 to a nozzle 26 for the purpose of generating solvent vapors 411, see also FIG. 3.
  • the solvent pressure chamber 28 is driven in the same way, like the ink pressure chamber 24. In principle, flushing is also possible in this way with a correspondingly greater control energy and longer filling time for the antechamber 12, but not effectively.
  • the vestibule 12 consists of a trough-shaped area 122 located in the edge area and an area 121 in front of the ink nozzles 221.
  • the areas 121 and 122 are connected to one another via capillary slots 124, from which the solvent vapors from Area 122 reach area 121.
  • the area 122 is designed as a circumferential capillary space.
  • the heating device 123 is also located in this.
  • the containers 3 for ink 31 and containers 4 for solvents 4 shown schematically in the ink print head 2 are kept relatively small and are connected by suitable connections in a manner not shown with correspondingly large outer containers

Landscapes

  • Ink Jet (AREA)
EP96250110A 1995-06-19 1996-05-21 Dispositif pour tenir propre les buses d'une tête à jet d'encre Expired - Lifetime EP0749836B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19522593A DE19522593C2 (de) 1995-06-19 1995-06-19 Vorrichtung zur Reinhaltung der Düsen eines Tintendruckkopfes
DE19522593 1995-06-19

Publications (2)

Publication Number Publication Date
EP0749836A1 true EP0749836A1 (fr) 1996-12-27
EP0749836B1 EP0749836B1 (fr) 1999-12-22

Family

ID=7764924

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96250110A Expired - Lifetime EP0749836B1 (fr) 1995-06-19 1996-05-21 Dispositif pour tenir propre les buses d'une tête à jet d'encre

Country Status (3)

Country Link
US (1) US5929877A (fr)
EP (1) EP0749836B1 (fr)
DE (2) DE19522593C2 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1052099A1 (fr) * 1999-05-10 2000-11-15 Eastman Kodak Company Imprimante autonettoyante en encre avec gouttière et procédé d'assemblage de l'imprimante
EP1979168A2 (fr) * 2006-02-03 2008-10-15 Rr Donnelley Dispositif et procédé de nettoyage d'une tête d'imprimante à jet d'encre
WO2012151179A1 (fr) * 2011-05-02 2012-11-08 Illinois Tool Works Inc. Rinçage au solvant pour dispositif de jet de fluide
US10124597B2 (en) 2016-05-09 2018-11-13 R.R. Donnelley & Sons Company System and method for supplying ink to an inkjet printhead
US10137691B2 (en) 2016-03-04 2018-11-27 R.R. Donnelley & Sons Company Printhead maintenance station and method of operating same

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US7021745B2 (en) 1997-07-15 2006-04-04 Silverbrook Research Pty Ltd Ink jet with thin nozzle wall
US6267464B1 (en) * 1998-12-28 2001-07-31 Eastman Kodak Company Self cleaning ink jet printhead cartridges
DE19910943B4 (de) * 1999-01-15 2005-01-05 Tallygenicom Computerdrucker Gmbh Düsenkopf für einen Tintendrucker
DE19901264C2 (de) * 1999-01-15 2003-06-18 Tally Computerdrucker Gmbh Düsenkopf für einen Tintendrucker
US6588886B2 (en) * 2000-05-23 2003-07-08 Silverbrook Research Pty Ltd Nozzle guard for an ink jet printhead
US6412904B1 (en) * 2000-05-23 2002-07-02 Silverbrook Research Pty Ltd. Residue removal from nozzle guard for ink jet printhead
US6488422B1 (en) 2000-05-23 2002-12-03 Silverbrook Research Pty Ltd Paper thickness sensor in a printer
US6390591B1 (en) * 2000-05-23 2002-05-21 Silverbrook Research Pty Ltd Nozzle guard for an ink jet printhead
US6526658B1 (en) 2000-05-23 2003-03-04 Silverbrook Research Pty Ltd Method of manufacture of an ink jet printhead having a moving nozzle with an externally arranged actuator
US6412908B2 (en) * 2000-05-23 2002-07-02 Silverbrook Research Pty Ltd Inkjet collimator
US6786658B2 (en) * 2000-05-23 2004-09-07 Silverbrook Research Pty. Ltd. Printer for accommodating varying page thicknesses
US7213989B2 (en) * 2000-05-23 2007-05-08 Silverbrook Research Pty Ltd Ink distribution structure for a printhead
US6988840B2 (en) * 2000-05-23 2006-01-24 Silverbrook Research Pty Ltd Printhead chassis assembly
US6652078B2 (en) * 2000-05-23 2003-11-25 Silverbrook Research Pty Ltd Ink supply arrangement for a printer
US7128388B2 (en) * 2000-05-23 2006-10-31 Silverbrook Research Pty Ltd Residue guard for nozzle groups for an ink jet printhead
US7004652B2 (en) 2000-05-23 2006-02-28 Silverbrook Research Pty Ltd Printer for accommodating varying page thickness
DE60037039D1 (de) 2000-05-24 2007-12-20 Silverbrook Res Pty Ltd Düsenschutz für einen tintenstrahldruckkopf
JP2003534166A (ja) * 2000-05-24 2003-11-18 シルバーブルック リサーチ ピーティワイ リミテッド プリンタにおける紙厚センサ
DE60040693D1 (de) * 2000-05-24 2008-12-11 Silverbrook Res Pty Ltd Laminierte tintendosierungsvorrichtung für einen drucker
US7237873B2 (en) * 2002-11-23 2007-07-03 Silverbrook Research Pty Ltd Inkjet printhead having low pressure ink ejection zone
AU774048B2 (en) * 2000-05-24 2004-06-17 Memjet Technology Limited Rotating platen member
US6676250B1 (en) 2000-06-30 2004-01-13 Silverbrook Research Pty Ltd Ink supply assembly for a print engine
US6854825B1 (en) * 2000-10-20 2005-02-15 Silverbrook Research Pty Ltd Printed media production
AU2004203199B2 (en) * 2000-10-20 2005-07-21 Memjet Technology Limited An ink supply assembly
US6485135B1 (en) * 2000-10-20 2002-11-26 Silverbrook Research Pty Ltd Ink feed for six color inkjet modular printhead
AUPR292301A0 (en) * 2001-02-06 2001-03-01 Silverbrook Research Pty. Ltd. A method and apparatus (ART99)
US7044578B2 (en) * 2002-08-21 2006-05-16 Seiko Epson Corporation Liquid ejection head and liquid ejection apparatus using the same
US7296259B2 (en) * 2002-09-11 2007-11-13 Agere Systems Inc. Processor system with cache-based software breakpoints
US6871935B2 (en) * 2003-02-14 2005-03-29 Philip Morris Usa Inc. Printer head cleaning system and method
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US7344220B2 (en) * 2005-01-25 2008-03-18 Fujifilm Dimatix, Inc. Ink jet printing apparatus having non-contact print head maintenance station
DE602006021375D1 (de) * 2005-09-28 2011-06-01 Brother Ind Ltd Flüssigkeitströpfchenausstossvorrichtung
KR101255294B1 (ko) * 2005-12-29 2013-04-23 엘지디스플레이 주식회사 인쇄장비 및 이를 이용한 액정표시소자 제조방법
JP4921151B2 (ja) * 2006-12-21 2012-04-25 キヤノン株式会社 データ処理装置、印刷装置、印刷処理方法、記憶媒体、プログラム
US20090021542A1 (en) * 2007-06-29 2009-01-22 Kanfoush Dan E System and method for fluid transmission and temperature regulation in an inkjet printing system
JP2012101476A (ja) * 2010-11-11 2012-05-31 Seiko Epson Corp 液体噴射装置
JP5811646B2 (ja) * 2011-07-08 2015-11-11 ブラザー工業株式会社 液体吐出装置
JP5790271B2 (ja) * 2011-08-04 2015-10-07 ブラザー工業株式会社 液体吐出装置
JP5691979B2 (ja) * 2011-09-30 2015-04-01 ブラザー工業株式会社 液体吐出装置
US20130136850A1 (en) * 2011-11-29 2013-05-30 Illinois Tool Works Inc. Method for depositing materials on a substrate
WO2013127703A1 (fr) 2012-03-02 2013-09-06 Oce-Technologies B.V. Module de marquage à jet d'encre et procédé de conditionnement de module de marquage à jet d'encre
WO2013134737A1 (fr) 2012-03-09 2013-09-12 R. R. Donnelley & Sons Company Système et procédé de nettoyage de cartouches à jet d'encre
US8888208B2 (en) 2012-04-27 2014-11-18 R.R. Donnelley & Sons Company System and method for removing air from an inkjet cartridge and an ink supply line
US8870341B2 (en) 2012-10-22 2014-10-28 Fujifilm Corporation Nozzle plate maintenance for fluid ejection devices
US9216581B2 (en) 2013-02-08 2015-12-22 R.R. Donnelley & Sons Company Apparatus and method for wiping an inkjet cartridge nozzle plate
JP6260096B2 (ja) * 2013-03-27 2018-01-17 セイコーエプソン株式会社 液体噴射ヘッドおよび液体噴射装置
JP6338053B2 (ja) * 2014-04-03 2018-06-06 セイコーエプソン株式会社 液体噴射装置及び液体噴射方法
US11148423B2 (en) * 2015-09-02 2021-10-19 Tonejet Limited Method of operating an inkjet printhead
JP6939051B2 (ja) * 2017-04-26 2021-09-22 セイコーエプソン株式会社 液体噴射ヘッド及び液体噴射装置
JP6921667B2 (ja) * 2017-07-12 2021-08-18 キヤノン株式会社 液体吐出ヘッド、液体吐出装置
JP7009837B2 (ja) * 2017-08-25 2022-01-26 京セラドキュメントソリューションズ株式会社 記録ヘッド及びそれを備えたインクジェット記録装置
US11485869B2 (en) 2018-02-08 2022-11-01 Georgia Tech Research Corporation Solution-based additive manufacturing
JP7265145B2 (ja) * 2019-05-30 2023-04-26 京セラドキュメントソリューションズ株式会社 インクジェット記録装置
JP7265146B2 (ja) * 2019-05-30 2023-04-26 京セラドキュメントソリューションズ株式会社 インクジェット記録装置

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JPS59232874A (ja) * 1983-06-16 1984-12-27 Matsushita Electric Ind Co Ltd インクジエツト記録装置
US4672397A (en) * 1983-08-31 1987-06-09 Nec Corporation On-demand type ink-jet print head having an air flow path
JPS63236654A (ja) * 1987-03-25 1988-10-03 Nec Corp インクジエツトプリンタヘツド保護機構
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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1052099A1 (fr) * 1999-05-10 2000-11-15 Eastman Kodak Company Imprimante autonettoyante en encre avec gouttière et procédé d'assemblage de l'imprimante
US6283575B1 (en) 1999-05-10 2001-09-04 Eastman Kodak Company Ink printing head with gutter cleaning structure and method of assembling the printer
EP1979168A2 (fr) * 2006-02-03 2008-10-15 Rr Donnelley Dispositif et procédé de nettoyage d'une tête d'imprimante à jet d'encre
EP1979168A4 (fr) * 2006-02-03 2008-12-24 Rr Donnelley Dispositif et procédé de nettoyage d'une tête d'imprimante à jet d'encre
WO2012151179A1 (fr) * 2011-05-02 2012-11-08 Illinois Tool Works Inc. Rinçage au solvant pour dispositif de jet de fluide
US8876252B2 (en) 2011-05-02 2014-11-04 Illinois Tool Works, Inc. Solvent flushing for fluid jet device
US10137691B2 (en) 2016-03-04 2018-11-27 R.R. Donnelley & Sons Company Printhead maintenance station and method of operating same
US10124597B2 (en) 2016-05-09 2018-11-13 R.R. Donnelley & Sons Company System and method for supplying ink to an inkjet printhead

Also Published As

Publication number Publication date
EP0749836B1 (fr) 1999-12-22
US5929877A (en) 1999-07-27
DE19522593A1 (de) 1997-01-02
DE59603955D1 (de) 2000-01-27
DE19522593C2 (de) 1999-06-10

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