EP0206431A1 - Dispositif pour protéger la région de tuyères d'une tête à jet d'encre - Google Patents

Dispositif pour protéger la région de tuyères d'une tête à jet d'encre Download PDF

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Publication number
EP0206431A1
EP0206431A1 EP86201093A EP86201093A EP0206431A1 EP 0206431 A1 EP0206431 A1 EP 0206431A1 EP 86201093 A EP86201093 A EP 86201093A EP 86201093 A EP86201093 A EP 86201093A EP 0206431 A1 EP0206431 A1 EP 0206431A1
Authority
EP
European Patent Office
Prior art keywords
ink jet
cover device
cavity
recording head
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
EP86201093A
Other languages
German (de)
English (en)
Other versions
EP0206431B1 (fr
Inventor
Manfred Rosenthal
Jan Roulaux
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.)
Philips Intellectual Property and Standards GmbH
Koninklijke Philips NV
Original Assignee
Philips Patentverwaltung GmbH
Philips Gloeilampenfabrieken NV
Koninklijke Philips Electronics NV
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6274204&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0206431(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Philips Patentverwaltung GmbH, Philips Gloeilampenfabrieken NV, Koninklijke Philips Electronics NV filed Critical Philips Patentverwaltung GmbH
Publication of EP0206431A1 publication Critical patent/EP0206431A1/fr
Application granted granted Critical
Publication of EP0206431B1 publication Critical patent/EP0206431B1/fr
Expired 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
    • B41J2/16505—Caps, spittoons or covers for cleaning or preventing drying out

Definitions

  • the invention relates to a cover device for protecting the nozzle area of an ink jet print head, which is sealingly releasably applied to the ink jet print head and forms a cavity open to the nozzles, in which ink liquid is conveyed through the nozzles.
  • Such covering devices known from DE-OS 29 29 742 and DE-OS 32 37 411 are used as components of a writing device to cover the ink jet writing head of the writing device at certain intervals for cleaning purposes. For this purpose, such cover devices are pressed against the end region of the ink jet recording head until the cleaning process is finished.
  • the invention is based on the object to provide measures to a filled with ink liquid ink jet head for a long time, especially as an individual part, for. B. as a spare part, can be stored and transported without the risk of drying of the ink liquid in the nozzle area exists and without entrapped or penetrating air bubbles can lead to a chemical change in the ink liquid.
  • At least part of the cavity can have elastically stretchable walls.
  • an ink expansion tank communicating with the cavity can also be advantageously provided, the volume of which can be increased elastically.
  • the covering device according to the invention is particularly simple in construction and easy to assemble if it is constructed as a funnel-like, rotationally symmetrical element, the filling side of which, with an end ring surface, rests radially outside the area of the nozzles on the end face of the ink jet recording head via an elastically flexible seal and thus forms the cavity to the nozzles and whose outlet pipe contains the ventilation channel and is closed by a screw cap.
  • a reliable fastening possibility results from the fact that the cover device is screwed to the ink jet writing head by means of a union nut which allows the discharge pipe to pass through.
  • the solution is provided that the cover device is fastened to the ink jet writing head by means of a fastening cap that passes through the discharge pipe centrally and encompasses the cover device on all sides, which has at least two symmetrically distributed, radially inwardly extending projections which, at a predetermined angular position, have gaps between openings Holding elements of the ink jet recording head can be carried out and can be hooked behind the holding elements by a rotary movement.
  • a particularly reliable method for producing a cover device according to the invention is characterized in that the cover device is fastened to the ink jet recording head when the venting channel is open, and then ink liquid is conveyed through the nozzles into the cavity of the covering device and through the venting channel to the outside until no air pockets are more noticeable in the cavity, and that finally the opening of the ventilation channel is closed.
  • the ink jet recording head 1 consists of a nozzle channel block 3 made of plastic, forming ink channels 2, on the end face of which a nozzle plate 4 is pressed tightly.
  • the pressing forces are applied by a cover element 5 which is pulled against the nozzle plate 4 by means of a union nut 6.
  • the union nut 6 is on the metallic threaded ring 23 screwed, which is fastened together with an annular disc element 20 on a cylindrical neck of the ink jet recording head.
  • An ink jet recording head covered by the covering device designed according to the invention can be stored for a long time.

Landscapes

  • Ink Jet (AREA)
EP86201093A 1985-06-26 1986-06-23 Dispositif pour protéger la région de tuyères d'une tête à jet d'encre Expired EP0206431B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19853522799 DE3522799A1 (de) 1985-06-26 1985-06-26 Abdeckeinrichtung zum schutz des duesenbereichs eines tintenstrahlschreibkopfes
DE3522799 1985-06-26

Publications (2)

Publication Number Publication Date
EP0206431A1 true EP0206431A1 (fr) 1986-12-30
EP0206431B1 EP0206431B1 (fr) 1989-04-05

Family

ID=6274204

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86201093A Expired EP0206431B1 (fr) 1985-06-26 1986-06-23 Dispositif pour protéger la région de tuyères d'une tête à jet d'encre

Country Status (4)

Country Link
US (1) US4707714A (fr)
EP (1) EP0206431B1 (fr)
JP (1) JPS61297150A (fr)
DE (2) DE3522799A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5517220A (en) * 1991-07-29 1996-05-14 Hewlett-Packard Company Rounded capillary vent system for ink-jet printers

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3830811A1 (de) * 1987-09-11 1989-03-23 Minolta Camera Kk Bildaufzeichnungssystem
KR940010881B1 (ko) * 1988-10-07 1994-11-19 캐논 가부시끼가이샤 기록장치
AU635562B2 (en) * 1989-09-18 1993-03-25 Canon Kabushiki Kaisha Recording head with cover
US5717444A (en) * 1990-04-11 1998-02-10 Canon Kabushiki Kaisha Suction recovery device and ink jet recording apparatus using the device
ATE153917T1 (de) * 1991-03-08 1997-06-15 Canon Kk Tintenstrahlaufzeichnungskopf und schützverfahren dafür
JP3222673B2 (ja) * 1993-12-30 2001-10-29 キヤノン株式会社 キャップ機構、インクジェット装置および情報処理システム
JP3324629B2 (ja) * 1995-03-13 2002-09-17 セイコーエプソン株式会社 インクジェット式印刷ユニットの保管ケース
KR0146534B1 (ko) * 1995-10-18 1998-08-17 김광호 잉크젯트 프린터의 프린트헤드를 제어하는 회로 및 방법
US6283576B1 (en) * 1999-10-29 2001-09-04 Xerox Corporation Ventable ink jet printhead capping and priming assembly
KR100389859B1 (ko) * 2000-06-24 2003-07-04 삼성전자주식회사 잉크젯 프린터용 헤드의 캡핑 장치
JP4626264B2 (ja) 2004-10-28 2011-02-02 ブラザー工業株式会社 記録ヘッドの保管装置および保管方法
JP2012183741A (ja) * 2011-03-07 2012-09-27 Seiko Epson Corp 液体噴射装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4045802A (en) * 1975-07-29 1977-08-30 Ricoh Company, Ltd. Ink ejection printing apparatus comprising automatically actuated ejection orifice cap
DE3040055A1 (de) * 1979-10-23 1981-05-14 Canon K.K., Tokyo Tintenstrahlschreiber
DE3207072A1 (de) * 1982-02-26 1983-09-15 Siemens AG, 1000 Berlin und 8000 München Abdeck- und reinigungsvorrichtng fuer tintenschreibkoepfe

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5121439A (en) * 1974-08-14 1976-02-20 Matsushita Electric Ind Co Ltd Inkujetsutohetsudo
DE2919727A1 (de) * 1979-05-16 1980-11-20 Olympia Werke Ag Vorrichtung zum verschliessen der duesenflaeche an einem tintenschreibkopf
DE2929742A1 (de) * 1979-07-23 1981-02-19 Olympia Werke Ag Vorrichtung zum bedecken der duesenflaeche an einem tintenschreibkopf
JPS5862057A (ja) * 1981-10-08 1983-04-13 Canon Inc インクジェット装置用回復装置及びそれを備えたインクジェット装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4045802A (en) * 1975-07-29 1977-08-30 Ricoh Company, Ltd. Ink ejection printing apparatus comprising automatically actuated ejection orifice cap
DE3040055A1 (de) * 1979-10-23 1981-05-14 Canon K.K., Tokyo Tintenstrahlschreiber
DE3207072A1 (de) * 1982-02-26 1983-09-15 Siemens AG, 1000 Berlin und 8000 München Abdeck- und reinigungsvorrichtng fuer tintenschreibkoepfe

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5517220A (en) * 1991-07-29 1996-05-14 Hewlett-Packard Company Rounded capillary vent system for ink-jet printers

Also Published As

Publication number Publication date
EP0206431B1 (fr) 1989-04-05
JPS61297150A (ja) 1986-12-27
DE3662663D1 (en) 1989-05-11
US4707714A (en) 1987-11-17
DE3522799A1 (de) 1987-01-08

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