EP0805037B1 - Filter und schnelltrennbare Anschlussverbindung für einen Tintenstrahldruckkopf - Google Patents

Filter und schnelltrennbare Anschlussverbindung für einen Tintenstrahldruckkopf Download PDF

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Publication number
EP0805037B1
EP0805037B1 EP97302691A EP97302691A EP0805037B1 EP 0805037 B1 EP0805037 B1 EP 0805037B1 EP 97302691 A EP97302691 A EP 97302691A EP 97302691 A EP97302691 A EP 97302691A EP 0805037 B1 EP0805037 B1 EP 0805037B1
Authority
EP
European Patent Office
Prior art keywords
filter
filter assembly
ink jet
quick disconnect
assembly
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
EP97302691A
Other languages
English (en)
French (fr)
Other versions
EP0805037A2 (de
EP0805037A3 (de
Inventor
David A. Huliba
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.)
Kodak Versamark Inc
Original Assignee
Kodak Versamark 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 Kodak Versamark Inc filed Critical Kodak Versamark Inc
Publication of EP0805037A2 publication Critical patent/EP0805037A2/de
Publication of EP0805037A3 publication Critical patent/EP0805037A3/de
Application granted granted Critical
Publication of EP0805037B1 publication Critical patent/EP0805037B1/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
    • B41J2/175—Ink supply systems ; Circuit parts therefor
    • B41J2/17563—Ink filters

Definitions

  • the present invention relates to continuous ink jet printers and, more particularly, to an integral filter and quick disconnect fitting assembly for an ink jet printhead.
  • Ink jet printing systems are known in which a print head defines one or more rows of orifices which receive an electrically conductive recording fluid from a pressurized fluid supply manifold and eject the fluid in rows of parallel streams.
  • Printers using such print heads accomplish graphic reproduction by selectively charging and deflecting the drops in each of the streams and depositing at least some of the drops on a print receiving medium, while others of the drops strike a drop catcher device.
  • the fluid system for a continuous ink jet printer must perform a number of functions. These functions include liquid supply, catch fluid return, startup and shutdown of the print head, and long-term storage.
  • Continuous ink jet fluid systems have filter design and packaging related to the ink jet printhead.
  • Prior continuous ink jet printheads have a final filter that is placed in-line between the inlet to the printhead and the inlet tubing quick disconnect fitting.
  • Existing ink jet printer systems are known which have a one inch 240 dots-per-inch (dpi) printhead, wherein 1 inch is 25,4 mm.
  • dpi dots-per-inch
  • a filter assembly for a continuous ink jet printing system, the continuous ink jet printing system having a fluid system and an ink jet printhead.
  • the filter assembly comprises a filter situated in-line with the ink jet printhead and surrounded by a sealing means.
  • a quick disconnect fitting is provided for capturing the filter housed within the sealing means to provide an integral quick disconnect filter assembly.
  • the present invention is an integral filter and quick disconnect fitting assembly for an ink jet printhead, wherein the final filter of the printhead is packaged in a quick disconnect fitting to eliminate a separately housed in-line filter assembly.
  • Fig. 1 a front view of a printhead 10 connected to a fluid manifold 12 is shown, illustrating the filter assembly 14 of the present invention.
  • the present invention is described in detail with particular reference to certain preferred embodiments thereof, including particular reference to a fluid manifold such as is described and claimed in commonly assigned EP-A-0 764 538, which is prior art according to Article 54(3) EPC.
  • the manifold assembly 12 comprises a variety of fluidic features. These include inlet and outlet fluid connections 16 and 18, respectively, to a supply umbilical (not shown), for providing fluidic quick disconnect between the umbilical and manifold 12.
  • the integrated fluidic features also include inlet and outlet fluid connections 20 and 22, respectively, to the printhead 10, for providing fluidic quick disconnect between the manifold 12 and the printhead 10, in accordance with the present invention.
  • a pressure transducer 24 to the outlet of the printhead 10 and a temperature thermistor 26 to the inlet of the printhead 10 are also associated with the fluid manifold 12.
  • the pressure transducer 24 senses pressure at the printhead 10 and is part of a servo loop control of the fluid pump to provide given printhead pressures.
  • the temperature thermistor 26 senses ink temperature at the printhead 10, and provides servo loop control of the ink heater in the fluid system, to maintain a minimal fluid temperature.
  • the fluid manifold assembly 12 has associated inlet and outlet solenoid valves 28 and 30, respectively, to the printhead 10.
  • the inlet fluid valve 28 shuts off fluid to the printhead and prevents fluid from draining into the printhead during shutdown periods, where the printhead position may be lower than the fluid system position.
  • the outlet fluid valve 30 provides a means for establishing pressure in the printhead when closed, while providing flow through cleaning of the printhead when open.
  • the filter assembly 14 of the present invention is illustrated.
  • a final filter 32 with a seal 34 is captured in a quick disconnect fitting 36 to provide an integral quick disconnect filter assembly 14.
  • the filter 32 comprises a pleated stainless steel disc filter rated at two micron nominal and ten micron absolute.
  • the seal 34 preferably a silicone ring, seals the edges of the final filter 32, preventing fluid from bypassing the filter.
  • the final filter and seal assembly is captured between the pair of molded fittings 36.
  • a first end of the filter assembly comprises a male end (38), with an o-ring, for mating with a female end of the fluid manifold quick disconnect fitting.
  • the other, second, end of the filter assembly 14 comprises a barb 37 for silicone fluid tubing 39 of Fig. 1, to provide mechanical gripping for the silicone tubing.
  • the quick disconnect fitting can be either the female or male end of the filter assembly. Together, the male and female ends comprise a quick disconnect coupling.
  • the components 32, 34 and 36 are permanently sealed, using any suitable means, to form an integral quick disconnect and final filter fitting assembly 14.
  • the final filter fitting assembly 14 comprises filter 32 situated in-line with the ink jet printhead 10. Sealing means 34 surround filter 32.
  • the quick disconnect fitting 36 captures the filter 32 housed within the sealing means 34, to provide the integral quick disconnect filter assembly 14.
  • the assembly 14 addresses the packaging constraints of certain printheads by eliminating an additional housing for the final filter, as has previously been required in prior continuous ink jet printheads.
  • the present invention is useful in the field of ink jet printing, and has the advantage of addressing packaging constraints of certain printheads.
  • the present invention provides the further advantage of providing an integral filter/quick disconnect fitting assembly for an ink jet printhead.
  • the present invention provides the advantage of eliminating a separate housing for the final filter.

Landscapes

  • Ink Jet (AREA)

Claims (10)

  1. Filteranordnung für ein kontinuierlich arbeitendes Tintenstrahl-Drucksystem, das ein Fluidsystem und einen Tintenstrahl-Druckkopf (10) aufweist, wobei die Filteranordnung (14) enthält:
    einen Filter (32), welcher in einer Reihe mit dem Tintenstrahl-Druckkopf angeordnet ist,
    ein Dichtmittel (34), welches den Filter umgibt, und
    ein Schnellösefitting (36), welches den Filter aufnimmt, der innerhalb des Dichtmittels (34) angeordnet ist, um eine integrale Schnellöse-Filteranordnung (14) bereitzustellen.
  2. Filteranordnung nach Anspruch 1,
    bei der der Filter einen gefalteten Scheibenfilter aus rostfreiem Stahl aufweist.
  3. Filteranordnung nach Anspruch 2,
    bei der der gefaltete Scheibenfilter aus rostfreiem Stahl für zwei Mikrons nominal und zehn Mikrons absolut bemessen ist.
  4. Filteranordnung nach Anspruch 1,
    bei der das Dichtmittel ein Silikonring ist.
  5. Filteranordnung nach Anspruch 1,
    bei der der Filter einen Mittenabschnitt und Kantenabschnitte aufweist.
  6. Filteranordnung nach Anspruch 5,
    bei der das Dichtmittel die Kantenabschnitte des Filters abdichtet, um ein Vorbeifließen von Fluid an dem Filter zu verhindern.
  7. Filteranordnung nach Anspruch 1,
    bei der das Schnellösefitting ein Paar geformte Fittings aufweist.
  8. Filteranordnung nach Anspruch 1,
    weiterhin enthaltend ein erstes Ende und ein zweites Ende.
  9. Filteranordnung nach Anspruch 8,
    bei der das erste Ende ein steckerförmiges Ende (38) ist, welches mit einem büchsenförmigen Ende des Schnellösefittings zusammenpaßt.
  10. Filteranordnung nach Anspruch 8,
    weiterhin enthaltend einen Widerhaken (37) am zweiten Ende der Filteranordnung.
EP97302691A 1996-04-30 1997-04-21 Filter und schnelltrennbare Anschlussverbindung für einen Tintenstrahldruckkopf Expired - Lifetime EP0805037B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US64023496A 1996-04-30 1996-04-30
US640234 1996-04-30

Publications (3)

Publication Number Publication Date
EP0805037A2 EP0805037A2 (de) 1997-11-05
EP0805037A3 EP0805037A3 (de) 1998-05-20
EP0805037B1 true EP0805037B1 (de) 2000-05-10

Family

ID=24567395

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97302691A Expired - Lifetime EP0805037B1 (de) 1996-04-30 1997-04-21 Filter und schnelltrennbare Anschlussverbindung für einen Tintenstrahldruckkopf

Country Status (5)

Country Link
EP (1) EP0805037B1 (de)
JP (1) JPH1034964A (de)
AU (1) AU714373B2 (de)
CA (1) CA2203955A1 (de)
DE (1) DE69701921T2 (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011073412A (ja) * 2009-10-02 2011-04-14 Hitachi Industrial Equipment Systems Co Ltd インクジェット記録装置
US9975326B2 (en) 2014-06-05 2018-05-22 Videojet Technologies Inc. Continuous ink jet print head with zero adjustment embedded charging electrode
KR101966649B1 (ko) 2014-06-05 2019-04-09 비디오제트 테크놀러지즈 인코포레이티드 잉크젯 인쇄용 자체-밀봉 필터 모듈
WO2015187926A1 (en) 2014-06-05 2015-12-10 Videojet Technologies Inc. An ink buildup sensor arrangement
DE102017215451A1 (de) * 2017-09-04 2019-03-07 Krones Ag Druckkopftank für eine Direktdruckvorrichtung und Verfahren zur Herstellung des Druckkopftanks

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0764538A2 (de) * 1995-09-19 1997-03-26 SCITEX DIGITAL PRINTING, Inc. Flüssigkeitssystem für einen Tintenstrahldruckkopf

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0146997A1 (de) * 1984-01-03 1985-07-03 John Derek Guest Rohrverbindung
US4599626A (en) * 1984-08-02 1986-07-08 Metromedia, Inc. Ink drop ejecting head
US4707262A (en) * 1986-07-02 1987-11-17 Dayco Products, Inc. Hose construction, coupling arrangement therefor and method of making the same
WO1991002919A1 (en) * 1989-08-15 1991-03-07 Applied Biosystems, Inc. Snap cap reaction column
US5951728A (en) * 1994-10-03 1999-09-14 Snap-Tite, Inc. Coupling with filters

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0764538A2 (de) * 1995-09-19 1997-03-26 SCITEX DIGITAL PRINTING, Inc. Flüssigkeitssystem für einen Tintenstrahldruckkopf

Also Published As

Publication number Publication date
JPH1034964A (ja) 1998-02-10
AU714373B2 (en) 1999-12-23
DE69701921T2 (de) 2000-12-07
EP0805037A2 (de) 1997-11-05
DE69701921D1 (de) 2000-06-15
CA2203955A1 (en) 1997-10-30
EP0805037A3 (de) 1998-05-20
AU1993897A (en) 1997-11-06

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