EP0087759B1 - Abdeck- und Reinigungsvorrichtung für Tintenschreibköpfe - Google Patents

Abdeck- und Reinigungsvorrichtung für Tintenschreibköpfe Download PDF

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Publication number
EP0087759B1
EP0087759B1 EP83101787A EP83101787A EP0087759B1 EP 0087759 B1 EP0087759 B1 EP 0087759B1 EP 83101787 A EP83101787 A EP 83101787A EP 83101787 A EP83101787 A EP 83101787A EP 0087759 B1 EP0087759 B1 EP 0087759B1
Authority
EP
European Patent Office
Prior art keywords
sealing plate
nozzle plate
plate
print head
outlet openings
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
Application number
EP83101787A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0087759A3 (en
EP0087759A2 (de
Inventor
Wilhelm Kirner
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of EP0087759A2 publication Critical patent/EP0087759A2/de
Publication of EP0087759A3 publication Critical patent/EP0087759A3/de
Application granted granted Critical
Publication of EP0087759B1 publication Critical patent/EP0087759B1/de
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
    • B41J2/16517—Cleaning of print head nozzles
    • B41J2/16535—Cleaning of print head nozzles using wiping constructions

Definitions

  • the invention relates to a device according to the preamble of patent claim 1.
  • EP-A-0 041706 such a protection and cleaning device for write heads in ink writing devices is known, in which a cover cap with a cover pad attached to it and a stripping element can be pivoted at a distance in front of the nozzle plate of the write head via an electrically controllable device. If the cover cushion is in front of the nozzle plate, the outlet openings are protected against contamination. The wiping element resiliently abutting the nozzle plate also cleans the outlet openings during a swiveling process.
  • This device which is structurally connected to the write head, also enables the cover cap with cover cushion and stripping element to be actuated independently of the position of the write head, but can be used in the operating state in which the cover cap is arranged with a cutout at a distance in front of the outlet openings , then fine dust is generated between the cover cap and the nozzle plate, which comes from the cover cushion lying above the nozzle plate in this operating position and the stripping element and leads to blockage of the nozzles.
  • the object of the invention is to provide a device which not only ensures an independent of the position of the carriage safe and reliable closure of the outlet openings, but at the same time allows to eliminate exterior with a simple structure ° impurities of the outlet openings.
  • the sealing plate and the nozzle plate are fastened together on the write head, with an almost absolute security against leakage of ink being ensured by means of a sealing ring. Furthermore, it is an advantage that the cover element, which can be pivoted as a sealing plate on the nozzle plate and has a cutout, also covers most of the nozzle plate even when the outlet openings are released, and additional cleaning can thus be omitted. It is also an advantage that the sharp edges of the cutout in the sealing plate represent a very effective cleaning element for the outlet openings of the nozzle plate, since when the sealing plate and thus also the cutout are pivoted, external impurities are reliably removed.
  • an embodiment of the invention provides that the sealing plate is rotatably mounted and can be pivoted in a simple manner via a crank mechanism. This is associated with a simple structure which has only an insignificant effect on the overall structure of the write head.
  • the sealing plate can be covered with a film, e.g. B. be coated with a Teflon film, which allows a smooth movement with very high wear resistance. This in turn has a favorable effect on the dimensioning of the drive element.
  • the print head shown in FIG. 1 consists of a plastic body 1, in which the ink channels 3 run between a supply part 2 and the boundary surface of the write head facing a recording medium (not shown here).
  • the write head is closed with a nozzle plate 4, through the outlet openings 5 of which ink droplets are ejected in the direction of the recording medium.
  • the drive elements for the ink channels 3 and thus for the ejection of ink droplets are, for example, piezo elements. These are located inside the print head and are not visible in this representation.
  • the nozzle plate 4 is surrounded by a sealing ring 6.
  • the sealing plate 7 is provided, which is coated on its side facing the print head with a film, for example with a Teflon film 8.
  • the sealing plate 7 is fastened to the write head 1 together with the nozzle plate 4 by means of a resilient bracket 9.
  • a resilient bracket 9 For this purpose, two lugs 10 and 11 are provided on the write head 1, in which the bracket 9 engages. It is held by means of a tension spring 12.
  • the sealing ring is deformed by the pressing force of the bracket 9, so that an exact contact of the nozzle plate 4 on the boundary or mouth surface of the print head and thus a very secure seal is ensured.
  • the sealing plate 7 is rotatably mounted on a pin 13 which is also attached to the writing head.
  • FIG. 2 shows the write head from the front.
  • the sealing plate 7 In front of the nozzle plate 4, the sealing plate 7 is pivotally mounted about the pin 13 such that the cutout 14 of the sealing plate 7 either closes the outlet openings of the nozzle plate 7 (position shown in FIG. 2) or releases it.
  • the dimensions of the sealing plate 7 are such that it covers the nozzle plate both in the open position (outlet openings released) and in the closed position (outlet openings closed).
  • the sealing surface of the sealing plate 7 is thus covered in any case, so that no additional cleaning of the sealing plate is required.
  • the pivoting takes place via a crank mechanism 17, the crank pin 15 of which engages in a slot-shaped recess 16 of the sealing plate 7.
  • the cure Bel Mechanism 17 is moved back and forth between two stops 18 and 19 by means of a drive element, not shown here, whereby the sealing plate 7 with the cutout 14 moves on the nozzle plate 4, and closes or releases the outlet openings.
  • This arrangement enables the sealing plate 7 to move independently of the position of the writing head, ie the sealing plate 7 and the drive mechanism 15, 17, 18 and 19 are directly associated with the writing head.
  • the cutout 14 is made sharp-edged, a wiping function is carried out with each pivoting movement of the sealing plate and thus with each pivoting movement of the cutout 14, with which the outlet openings of the nozzle plate are reliably protected from external contaminants such as dust particles, residual ink, etc. getting cleaned.
  • the sealing plate 7 has only a very small thickness, so that the distance between z. B. a platen and the print head is only slightly reduced.

Landscapes

  • Ink Jet (AREA)
  • Accessory Devices And Overall Control Thereof (AREA)
EP83101787A 1982-02-26 1983-02-23 Abdeck- und Reinigungsvorrichtung für Tintenschreibköpfe Expired EP0087759B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3207072 1982-02-26
DE19823207072 DE3207072A1 (de) 1982-02-26 1982-02-26 Abdeck- und reinigungsvorrichtng fuer tintenschreibkoepfe

Publications (3)

Publication Number Publication Date
EP0087759A2 EP0087759A2 (de) 1983-09-07
EP0087759A3 EP0087759A3 (en) 1985-05-15
EP0087759B1 true EP0087759B1 (de) 1987-01-28

Family

ID=6156845

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83101787A Expired EP0087759B1 (de) 1982-02-26 1983-02-23 Abdeck- und Reinigungsvorrichtung für Tintenschreibköpfe

Country Status (4)

Country Link
US (1) US4500894A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
EP (1) EP0087759B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
JP (1) JPS58158262A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE3207072A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3522799A1 (de) * 1985-06-26 1987-01-08 Philips Patentverwaltung Abdeckeinrichtung zum schutz des duesenbereichs eines tintenstrahlschreibkopfes
DE3528926A1 (de) * 1985-08-12 1987-02-19 Siemens Ag Verfahren und vorrichtung zum reinigen und verschliessen der duesen eines schreibkopfes in einer tintenschreibeinrichtung
US4855764A (en) * 1986-02-25 1989-08-08 Siemens Aktiengesellschaft Apparatus for sealing and cleaning the ink discharge openings at an ink printing head
DE3608912A1 (de) * 1986-03-17 1987-10-01 Agfa Gevaert Ag Mikrofilmaufnahmekamera mit signiermitteln fuer die zu verfilmenden originale
DE3635420C1 (en) * 1986-10-17 1988-03-31 Siemens Ag Apparatus for covering ink jet outlet openings which are arranged in a plurality of rows and columns in the form of a matrix and belong to an ink jet print head
DE3713794A1 (de) * 1987-04-24 1988-11-10 Siemens Ag Vorrichtung zum reinigen und verschliessen der duesenflaeche eines tintenkopfes
US4755836A (en) * 1987-05-05 1988-07-05 Hewlett-Packard Company Printhead cartridge and carriage assembly
DE3817754A1 (de) * 1988-05-20 1989-11-23 Siemens Ag Vorrichtung zum reinigen und verschliessen der duesenflaeche eines tintendruckkopfes
GB8915819D0 (en) * 1989-07-11 1989-08-31 Domino Printing Sciences Plc Continuous ink jet printer
US5444474A (en) * 1992-03-23 1995-08-22 Matsushita Electric Industrial Co., Ltd. Ink-jet cartridge for ink-jet printers and ink-jet printer using the same
US5572245A (en) * 1994-03-10 1996-11-05 Hewlett-Packard Company Protective cover apparatus for an ink-jet pen
JP3252392B2 (ja) * 1994-05-17 2002-02-04 セイコーエプソン株式会社 インクジェット式記録装置、及び記録ヘッドのクリーニング方法
US5867186A (en) * 1994-06-08 1999-02-02 Canon Business Machines, Inc. Capping mechanism
US5530463A (en) * 1994-08-25 1996-06-25 Xerox Corporation Integral seal for ink jet printheads
KR0132357B1 (ko) * 1995-03-04 1998-04-11 김광호 잉크젵 프린터의 노즐 청소방법 및 장치
US6168255B1 (en) * 1995-06-07 2001-01-02 Citizen Watch Co., Ltd. Ink jet head method of production thereof, and jig for producing ink jet head
DE19522600C2 (de) * 1995-06-19 1998-06-04 Francotyp Postalia Gmbh Anordnung für eine elektronische Handfrankiermaschine mit Tintendruckkopf und Reinigungsteil
DE102008019715A1 (de) * 2008-04-18 2009-10-22 Aps Alternative Printing Services Gmbh Verschlussvorrichtung, Druckkopf, Druckvorlage, Verfahren zum Verschließen eines Druckkopfes und Verwendung der Verschlussvorrichtung
CN101462410B (zh) * 2008-12-31 2011-11-02 珠海纳思达电子科技有限公司 一种用于喷墨打印机的墨盒
US8672445B2 (en) * 2011-09-13 2014-03-18 Videojet Technologies, Inc. Capping device
GB2505883B (en) * 2012-09-12 2014-10-08 Linx Printing Tech Ink jet print head and cap
US10512921B2 (en) * 2016-05-09 2019-12-24 Funai Electric Co., Ltd. Maintenance apparatus for vaporizing device
DE102019107986A1 (de) * 2019-03-28 2020-10-01 Koenig & Bauer Ag Druckaggregat

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2321273C2 (de) * 1973-04-27 1975-04-30 Olympia Werke Ag, 2940 Wilhelmshaven Einrichtung zum Abdecken der Austrittsöffnungen eines Spritzkopfes
DE2607313C3 (de) * 1976-02-23 1979-01-25 Siemens Ag, 1000 Berlin Und 8000 Muenchen Schutz- und Reinigungsvorrichtung für Schreibköpfe in Tintenschreibeinrichtungen
US4153901A (en) * 1976-12-20 1979-05-08 Recognition Equipment Incorporated Variable frequency multi-orifice IJP
DE2743966C3 (de) * 1977-09-30 1981-02-12 Olympia Werke Ag, 2940 Wilhelmshaven Kassette für ein gegen die Düsenaustrittsfläche eines Tintenschreibkopfes anzulegendes Band
DE2831855C2 (de) * 1978-07-20 1983-10-27 NCR Corp., 45479 Dayton, Ohio Tintenstrahldrucksystem
US4199767A (en) * 1979-02-21 1980-04-22 International Business Machines Corporation Nozzle valve for ink jet printers
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
DE3021913A1 (de) * 1980-06-11 1981-12-17 Siemens AG, 1000 Berlin und 8000 München Schwenkbare tintenabweisblende fuer den screibkopf einer tintenschreibeinrichtung
US4401990A (en) * 1980-08-28 1983-08-30 Sharp Kabushiki Kaisha Nozzle cleaning device in an ink jet system printer
US4343013A (en) * 1980-10-14 1982-08-03 Ncr Corporation Nozzle plate for ink jet print head
DE3113816A1 (de) * 1981-04-06 1982-10-21 Siemens AG, 1000 Berlin und 8000 München Vorrichtung zum abdichten und reinigen der tintenaustrittsoeffnungen eines schreibkopfes

Also Published As

Publication number Publication date
US4500894A (en) 1985-02-19
EP0087759A3 (en) 1985-05-15
JPH0351586B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1991-08-07
EP0087759A2 (de) 1983-09-07
DE3207072A1 (de) 1983-09-15
JPS58158262A (ja) 1983-09-20

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