EP0805037A2 - Filter und schnelltrennbare Anschlussverbindung für einen Tintenstrahldruckkopf - Google Patents

Filter und schnelltrennbare Anschlussverbindung für einen Tintenstrahldruckkopf Download PDF

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Publication number
EP0805037A2
EP0805037A2 EP97302691A EP97302691A EP0805037A2 EP 0805037 A2 EP0805037 A2 EP 0805037A2 EP 97302691 A EP97302691 A EP 97302691A EP 97302691 A EP97302691 A EP 97302691A EP 0805037 A2 EP0805037 A2 EP 0805037A2
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.)
Granted
Application number
EP97302691A
Other languages
English (en)
French (fr)
Other versions
EP0805037B1 (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.
  • 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.
  • dpi dots-per-inch
  • Such printheads have packaging constraints not previously addressed by prior printheads. With the packaging constraints of a one inch 240 dpi printhead, placement of the final filter in the same manner as prior printheads is nearly impossible.
  • 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.
  • 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 10 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, 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)
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 true EP0805037A2 (de) 1997-11-05
EP0805037A3 EP0805037A3 (de) 1998-05-20
EP0805037B1 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)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2305470A1 (de) * 2009-10-02 2011-04-06 Hitachi Industrial Equipment Systems Co., Ltd. Tintenstrahldrucker und Filter für einen Tintenstrahldrucker
US9770906B2 (en) 2014-06-05 2017-09-26 Videojet Technologies Inc. Ink buildup sensor arrangement
US9975326B2 (en) 2014-06-05 2018-05-22 Videojet Technologies Inc. Continuous ink jet print head with zero adjustment embedded charging electrode
US10071559B2 (en) 2014-06-05 2018-09-11 Videojet Technologies Inc. Self-sealing filter module for inkjet printing
WO2019042591A1 (de) * 2017-09-04 2019-03-07 Krones Ag Druckkopftank für eine direktdruckvorrichtung und verfahren zur herstellung des druckkopftanks

Citations (6)

* 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
EP0170036A2 (de) * 1984-08-02 1986-02-05 Metromedia Company Schreibkopf für einen Strahl aus Tintentropfen
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
WO1996010452A1 (en) * 1994-10-03 1996-04-11 Snap-Tite, Inc. Coupling with filters
EP0764538A2 (de) * 1995-09-19 1997-03-26 SCITEX DIGITAL PRINTING, Inc. Flüssigkeitssystem für einen Tintenstrahldruckkopf

Patent Citations (6)

* 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
EP0170036A2 (de) * 1984-08-02 1986-02-05 Metromedia Company Schreibkopf für einen Strahl aus Tintentropfen
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
WO1996010452A1 (en) * 1994-10-03 1996-04-11 Snap-Tite, Inc. Coupling with filters
EP0764538A2 (de) * 1995-09-19 1997-03-26 SCITEX DIGITAL PRINTING, Inc. Flüssigkeitssystem für einen Tintenstrahldruckkopf

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2305470A1 (de) * 2009-10-02 2011-04-06 Hitachi Industrial Equipment Systems Co., Ltd. Tintenstrahldrucker und Filter für einen Tintenstrahldrucker
US9770906B2 (en) 2014-06-05 2017-09-26 Videojet Technologies Inc. Ink buildup sensor arrangement
US9975326B2 (en) 2014-06-05 2018-05-22 Videojet Technologies Inc. Continuous ink jet print head with zero adjustment embedded charging electrode
US10071559B2 (en) 2014-06-05 2018-09-11 Videojet Technologies Inc. Self-sealing filter module for inkjet printing
US10414155B2 (en) 2014-06-05 2019-09-17 Videojet Technologies Inc. Continuous ink jet print head with zero adjustment embedded charging electrode
WO2019042591A1 (de) * 2017-09-04 2019-03-07 Krones Ag Druckkopftank für eine direktdruckvorrichtung und verfahren zur herstellung des druckkopftanks

Also Published As

Publication number Publication date
CA2203955A1 (en) 1997-10-30
EP0805037B1 (de) 2000-05-10
JPH1034964A (ja) 1998-02-10
AU714373B2 (en) 1999-12-23
EP0805037A3 (de) 1998-05-20
DE69701921T2 (de) 2000-12-07
AU1993897A (en) 1997-11-06
DE69701921D1 (de) 2000-06-15

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