EP0764538A2 - Flüssigkeitssystem für einen Tintenstrahldruckkopf - Google Patents

Flüssigkeitssystem für einen Tintenstrahldruckkopf Download PDF

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Publication number
EP0764538A2
EP0764538A2 EP96306789A EP96306789A EP0764538A2 EP 0764538 A2 EP0764538 A2 EP 0764538A2 EP 96306789 A EP96306789 A EP 96306789A EP 96306789 A EP96306789 A EP 96306789A EP 0764538 A2 EP0764538 A2 EP 0764538A2
Authority
EP
European Patent Office
Prior art keywords
fluid
fluidic
printhead
valves
fluid system
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
EP96306789A
Other languages
English (en)
French (fr)
Other versions
EP0764538B1 (de
EP0764538A3 (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 EP0764538A2 publication Critical patent/EP0764538A2/de
Publication of EP0764538A3 publication Critical patent/EP0764538A3/de
Application granted granted Critical
Publication of EP0764538B1 publication Critical patent/EP0764538B1/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
    • 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
    • B41J2/07—Ink jet characterised by jet control
    • B41J2/125—Sensors, e.g. deflection sensors

Definitions

  • the present invention relates to ink jet printing systems and, more particularly, to a fluid manifold for integrating fluid paths, fluidic sensors, and fluidic connectors for an ink jet printing system.
  • 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 continuous stream ink jet printing process is described, for example, in U.S. Pat. Nos. 4,255,754; 4,698,123 and 4,751,517, the disclosures of each of which are totally incorporated herein by reference.
  • 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.
  • Known fluid systems typically provided electronic control for pressure at the print head, ink temperature during startup, or ink concentration. The control of these functions leads to improved long-term ink jet performance.
  • a fluid system for an ink jet printhead comprises fluid paths, fluidic sensors, fluidic valves, and fluidic connectors.
  • a fluid manifold integrates this collection of individual components into a common structure, thereby eliminating free-hanging fluid connections, valves, and printhead sensing functions.
  • the present invention therefore, integrates all umbilical to printhead fluid paths, connections, valves and sensors into a single compact, easily tested, assembled, and serviced unit.
  • the manifold assembly 10 integrates the functions of the fluidic sensors, valves, and connections between an ink jet printhead and a supply umbilical, thereby providing an improved fluidic packaging design.
  • the manifold assembly 10 integrates a variety of fluidic features. These include inlet and outlet fluid connections 12 and 14, respectively, to a supply umbilical (not shown), for providing fluidic quick disconnect between the umbilical and manifold 15.
  • the integrated fluidic features also include inlet and outlet fluid connections 16 and 18, respectively, to the printhead (not shown), for providing fluidic quick disconnect between the manifold and the printhead.
  • a pressure transducer 20 to the outlet of the printhead and a temperature thermistor 22 to the inlet of the printhead are also integrated by the fluid manifold 10 of the present invention.
  • the pressure transducer 20 senses pressure at the printhead and is part of a servo loop control of the fluid pump to provide given printhead pressures.
  • the temperature thermistor 22 senses ink temperature at the printhead, and provides servo loop control of the ink heater in the fluid system, to maintain a minimal fluid temperature.
  • the fluid manifold assembly 10 integrates inlet and outlet solenoid valves 24 and 26, respectively, to the printhead.
  • the inlet fluid valve 24 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 26 provides a means for establishing pressure in the printhead when closed, while providing flow through cleaning of the printhead when open.
  • the manifold assembly 10 of the present invention integrates a bracket/electrical connector assembly 28, shown in Fig. 3, for the DC components.
  • the assembly 28 provides integrated termination of electrical component wiring between the printhead and the umbilical.
  • the DC components typically include the transducer 20, the thermistor 22, inlet/outlet valves 24 and 26, and an eyelid solenoid (not shown).
  • the manifold design configuration integrates all of the referenced components, provides interconnecting fluid paths within the manifold as required, and provides inlet/outlet ports which directly communicate with the printhead and umbilical fluid lines.
  • the present invention is particularly useful, given the design constraints of a smaller "footprint" for the printhead, i.e., 240 drops per inch, as compared to existing printheads which have 120 drops per inch; and the use of larger components, i.e., valves for improved reliability and flow.
  • the present invention addresses these constraints and achieves a design which integrates a variety of fluidic functions into a compact unit which still meets manufacturing assembly approval, as well as serviceability approval.
  • the present invention is useful in the field of ink jet printing, and has the advantages of integrating all umbilical to printhead fluid paths, connections, valves and sensors.
  • the present invention has the further advantage of integrating all of these functions into a single compact, easily tested, assembled, and serviced unit. It is another advantage of the present invention that it provides a compact unit for a 240 drops per inch printhead, which uses large components.

Landscapes

  • Ink Jet (AREA)
  • Particle Formation And Scattering Control In Inkjet Printers (AREA)
EP19960306789 1995-09-19 1996-09-18 Flüssigkeitssystem für einen Tintenstrahldruckkopf Expired - Lifetime EP0764538B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US53041895A 1995-09-19 1995-09-19
US530418 1995-09-19

Publications (3)

Publication Number Publication Date
EP0764538A2 true EP0764538A2 (de) 1997-03-26
EP0764538A3 EP0764538A3 (de) 1998-05-13
EP0764538B1 EP0764538B1 (de) 2000-07-19

Family

ID=24113576

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19960306789 Expired - Lifetime EP0764538B1 (de) 1995-09-19 1996-09-18 Flüssigkeitssystem für einen Tintenstrahldruckkopf

Country Status (4)

Country Link
EP (1) EP0764538B1 (de)
JP (1) JPH09169122A (de)
CA (1) CA2185840A1 (de)
DE (1) DE69609385T2 (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999047356A1 (en) * 1998-03-16 1999-09-23 Hewlett-Packard Company Modular approach for ink-jet technology
EP0805037B1 (de) * 1996-04-30 2000-05-10 SCITEX DIGITAL PRINTING, Inc. Filter und schnelltrennbare Anschlussverbindung für einen Tintenstrahldruckkopf
US6082854A (en) * 1998-03-16 2000-07-04 Hewlett-Packard Company Modular ink-jet hard copy apparatus and methodology
FR2837421A1 (fr) * 2002-03-22 2003-09-26 Imaje Sa Raccord hydro-electrique pour tete d'imprimante et imprimante equipee
WO2009098494A3 (en) * 2008-02-08 2009-11-26 Domino Printing Sciences Plc Improvements in or relating to continuous inkjet printers
US10099484B2 (en) 2014-10-30 2018-10-16 Hewlett-Packard Development Company, L.P. Print head sensing chamber circulation

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5634461A (en) * 1979-08-30 1981-04-06 Ricoh Co Ltd Ink jet recorder
US4649817A (en) * 1984-11-02 1987-03-17 Smith Michael S Stencil manufacturing and printing process
JPS6322655A (ja) * 1986-07-16 1988-01-30 Ricoh Co Ltd インクジエツトプリンタのインク供給装置
GB8725465D0 (en) * 1987-10-30 1987-12-02 Linx Printing Tech Ink jet printers

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0805037B1 (de) * 1996-04-30 2000-05-10 SCITEX DIGITAL PRINTING, Inc. Filter und schnelltrennbare Anschlussverbindung für einen Tintenstrahldruckkopf
WO1999047356A1 (en) * 1998-03-16 1999-09-23 Hewlett-Packard Company Modular approach for ink-jet technology
US6082854A (en) * 1998-03-16 2000-07-04 Hewlett-Packard Company Modular ink-jet hard copy apparatus and methodology
US6493937B1 (en) 1998-03-16 2002-12-17 Hewlett-Packard Company Method of manufacture for ink-jet hard copy apparatus using a modular approach to ink-jet technology
EP1312475A1 (de) * 1998-03-16 2003-05-21 Hewlett-Packard Company Modularer Aufbau für Tintenstrahltechnologie
WO2003080346A1 (fr) * 2002-03-22 2003-10-02 Imaje S.A. Raccord hydro-electrique pour tete d'imprimante et imprimante equipee
FR2837421A1 (fr) * 2002-03-22 2003-09-26 Imaje Sa Raccord hydro-electrique pour tete d'imprimante et imprimante equipee
US7195331B2 (en) 2002-03-22 2007-03-27 Imaje S.A. Hydroelectric coupling for a printhead and a printer equipped with one such coupling
WO2009098494A3 (en) * 2008-02-08 2009-11-26 Domino Printing Sciences Plc Improvements in or relating to continuous inkjet printers
GB2470156A (en) * 2008-02-08 2010-11-10 Domino Printing Sciences Plc Improvements in or relating to continuous inkjet printers
GB2470156B (en) * 2008-02-08 2012-10-10 Domino Printing Sciences Plc Improvements in or relating to continuous inkjet printers
US10099484B2 (en) 2014-10-30 2018-10-16 Hewlett-Packard Development Company, L.P. Print head sensing chamber circulation
US10449776B2 (en) 2014-10-30 2019-10-22 Hewlett-Packard Development Company, L.P. Print head sensing chamber circulation

Also Published As

Publication number Publication date
EP0764538B1 (de) 2000-07-19
DE69609385T2 (de) 2001-04-05
JPH09169122A (ja) 1997-06-30
EP0764538A3 (de) 1998-05-13
DE69609385D1 (de) 2000-08-24
CA2185840A1 (en) 1997-03-20

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