EP0613778A2 - Passivierungsschicht für Ladungselektroden auf Basis von Keramik - Google Patents

Passivierungsschicht für Ladungselektroden auf Basis von Keramik Download PDF

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Publication number
EP0613778A2
EP0613778A2 EP94301322A EP94301322A EP0613778A2 EP 0613778 A2 EP0613778 A2 EP 0613778A2 EP 94301322 A EP94301322 A EP 94301322A EP 94301322 A EP94301322 A EP 94301322A EP 0613778 A2 EP0613778 A2 EP 0613778A2
Authority
EP
European Patent Office
Prior art keywords
charge plate
polyimide film
charge
steps
charging electrodes
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
EP94301322A
Other languages
English (en)
French (fr)
Other versions
EP0613778A3 (de
EP0613778B1 (de
Inventor
Richard W. Sexton
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 EP0613778A2 publication Critical patent/EP0613778A2/de
Publication of EP0613778A3 publication Critical patent/EP0613778A3/de
Application granted granted Critical
Publication of EP0613778B1 publication Critical patent/EP0613778B1/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
    • B41J2/07—Ink jet characterised by jet control
    • B41J2/075—Ink jet characterised by jet control for many-valued deflection
    • B41J2/08—Ink jet characterised by jet control for many-valued deflection charge-control type
    • B41J2/085—Charge means, e.g. electrodes

Definitions

  • the present invention relates to continuous ink jet printers and, more particularly, to improved constructions for the charge plate structure in such printers.
  • electrically conductive ink is supplied under pressure to a manifold region that distributes the ink to a plurality of orifices, typically arranged in a linear array(s).
  • the ink discharges from the orifices in filaments which break into droplet streams.
  • Individual droplet streams are selectively charged in the region of the break off from the filaments and charge drops are deflected from their normal trajectories. The deflected drops may be caught and recirculated, and the undeflected drops allowed to proceed to a print receiving medium.
  • Drops are charged by a charge plate having a plurality of charging electrodes along one edge, and a corresponding plurality of connecting leads along one surface.
  • the edge of the charge plate having the charging electrodes is placed in close proximity to the break off point of the ink jet filaments, and charges applied to the leads to induce charges in the drops as they break off from the filaments.
  • charge plates are presently coated with multiple wet layers, such as a photoresist available as KTFR Photoresist from Union Carbide Corporation, lacquers, and epoxies.
  • a photoresist available as KTFR Photoresist from Union Carbide Corporation, lacquers, and epoxies.
  • Such coatings provide insufficient protection of the charge leads as compared to a solid layer of polyimide.
  • Wet coatings are prone to pinholing, and marginal adhesion, are not easily controllable and have erratic results. Coatings applied by wet methods inherently form an uneven interface at the leading edge of the coating on the charge plate surface where the conductors form a 90° angle.
  • a solid layer of polyimide is convenient to apply, assures good adhesion, and eliminates pinholes.
  • Polyimide sheet can be preformed to establish the desired interface with the charge plate surface. The setback distance and coating angle on the top charge plate surface can be controlled by cutting the polyimide sheet to the exact size and shape required.
  • a charge plate according to the present invention is provided with a polyimide dry film lamination which provides improved adhesion and impervious protection from ink.
  • the charge plate is fabricated according to the present invention by first forming the charge plate with a plurality of charging electrodes along one edge and a corresponding plurality of leads on one surface; precleaning the surface of the charge plate to insure complete wettability; and laminating a layer of adhesively bonded polyimide film to the surface bearing the leads, with heat and pressure.
  • Fig. 1 illustrates a partial schematic cross-sectional diagram of a charge plate fabricated according to the present invention.
  • charge plate 10 cooperates with other known components used in continuous ink jet printers. That is, the charge plate 10 functions with a drop generator, drop catcher (which may be integral with the charge plate), media feed station, and data handling and machine control electronics (not shown) to selectively charge the drops to effect ink jet printing.
  • the charge plate 10 includes an insulating substrate 12 on which are formed conductive leads 14 and drop charging electrodes 16.
  • the conductive leads 14 and drop charging electrodes 16 are covered by a protective layer 18 of adhesively bonded polyimide film.
  • the laminating is preferably by means of heat and pressure.
  • the charge plate shown in Fig. 1 is fabricated in the following manner.
  • the charge plate is formed (20) with the leads and charging electrodes preferably as shown in U.S. Patent 4,560,991.
  • the charge plate is precleaned (22) to insure complete wettability of the top surface bearing the conductive leads 14, thereby assuring that the lamination to follow covers all conductive leads.
  • the top of the charge plate is next laminated with a protective layer of adhesively bonded polyimide film (24).
  • the polyimide film is bonded to the charge plate (26) by applying sufficient heat and pressure.
  • the polyimide is bonded to the charge plate by applying approximately 250 pounds per square inch of pressure at approximately 350°F for approximately fifteen minutes, and then cooling the polyimide film to 250°F while maintaining pressure.
  • the protective layer of adhesively bonded polyimide film can be applied using known techniques for laminating.
  • the bonding can be applied in a hydraulic press having electrically heated platens, or in a hot roll continuous laminator.
  • a preferred grade of adhesively bonded polyimide is R/flex R 2000 (a registered trademark of Rogers Corp, Chandler, Arizona) coverfilm, one to three mils thick, having one mil of acrylic B-staged adhesive.
  • the present invention is useful in the field of ink jet printing, and has the advantage of providing improved protection of metallic charging leads from electrical short circuits.
  • the present invention provides the further advantage of giving the charge plate circuitry impervious protection from ink.
  • the polyimide film coating according to the present invention is compatible with the ink jet printing ink formulations available from Eastman Kodak Company.
  • the preferred lamination means provides easily controllable, high uniform coverage, and the precleaning process insures complete coverage of the polyimide film coating.

Landscapes

  • Particle Formation And Scattering Control In Inkjet Printers (AREA)
  • Laminated Bodies (AREA)
EP19940301322 1993-03-01 1994-02-24 Passivierungsschicht für Ladungselektroden auf Basis von Keramik Expired - Lifetime EP0613778B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US2454893A 1993-03-01 1993-03-01
US24548 1993-03-01

Publications (3)

Publication Number Publication Date
EP0613778A2 true EP0613778A2 (de) 1994-09-07
EP0613778A3 EP0613778A3 (de) 1995-04-05
EP0613778B1 EP0613778B1 (de) 1998-06-10

Family

ID=21821173

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19940301322 Expired - Lifetime EP0613778B1 (de) 1993-03-01 1994-02-24 Passivierungsschicht für Ladungselektroden auf Basis von Keramik

Country Status (2)

Country Link
EP (1) EP0613778B1 (de)
DE (1) DE69410852T2 (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0671269A2 (de) * 1994-03-10 1995-09-13 Domino Printing Sciences Plc Elektrodenanordnung für kontinuierlich arbeitenden Tintenstrahldrucker
EP0744291A2 (de) * 1995-05-26 1996-11-27 SCITEX DIGITAL PRINTING, Inc. Verfahren zur Herstellung von Ladungselektroden
EP0744290A2 (de) * 1995-05-26 1996-11-27 SCITEX DIGITAL PRINTING, Inc. Verfahren zur Herstellung von Ladungselektroden
CN1083334C (zh) * 1997-03-25 2002-04-24 莱克斯马克国际公司 具有第一和第二打印盒的喷墨打印装置
WO2005108090A1 (en) * 2004-05-05 2005-11-17 Eastman Kodak Company Inkjet print head with charge device
US8104170B2 (en) 2004-10-15 2012-01-31 Eastman Kodak Company Charge plate fabrication technique

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4419674A (en) * 1982-02-12 1983-12-06 Mead Corporation Wire wound flat-faced charge plate
EP0132972A2 (de) * 1983-07-27 1985-02-13 EASTMAN KODAK COMPANY (a New Jersey corporation) Struktur und Herstellungsverfahren einer Ladungselektrode für einen Tintenstrahldrucker
EP0153436A2 (de) * 1984-02-27 1985-09-04 Codi-Jet Markierungs Systeme GmbH Tintenstrahldrucker
US4560991A (en) * 1983-07-27 1985-12-24 Eastman Kodak Company Electroformed charge electrode structure for ink jet printers
EP0201835A2 (de) * 1985-05-15 1986-11-20 EASTMAN KODAK COMPANY (a New Jersey corporation) Ladeelektroden mit einer Halbleiterbeschichtung
JPH03218630A (ja) * 1990-01-24 1991-09-26 Matsushita Electric Works Ltd 高耐圧半導体装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4419674A (en) * 1982-02-12 1983-12-06 Mead Corporation Wire wound flat-faced charge plate
EP0132972A2 (de) * 1983-07-27 1985-02-13 EASTMAN KODAK COMPANY (a New Jersey corporation) Struktur und Herstellungsverfahren einer Ladungselektrode für einen Tintenstrahldrucker
US4560991A (en) * 1983-07-27 1985-12-24 Eastman Kodak Company Electroformed charge electrode structure for ink jet printers
EP0153436A2 (de) * 1984-02-27 1985-09-04 Codi-Jet Markierungs Systeme GmbH Tintenstrahldrucker
EP0201835A2 (de) * 1985-05-15 1986-11-20 EASTMAN KODAK COMPANY (a New Jersey corporation) Ladeelektroden mit einer Halbleiterbeschichtung
JPH03218630A (ja) * 1990-01-24 1991-09-26 Matsushita Electric Works Ltd 高耐圧半導体装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 15, no. 502 (E-1147) 18 December 1991 & JP-A-03 218 630 (MATSUSHITA ELECTRIC WORKS LTD) 26 September 1991 *

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0671269A2 (de) * 1994-03-10 1995-09-13 Domino Printing Sciences Plc Elektrodenanordnung für kontinuierlich arbeitenden Tintenstrahldrucker
EP0671269A3 (de) * 1994-03-10 1996-11-13 Domino Printing Sciences Plc Elektrodenanordnung für kontinuierlich arbeitenden Tintenstrahldrucker.
US5956060A (en) * 1994-03-10 1999-09-21 Domino Printing Sciences Plc Electrode assembly on a flexible non-conductive film for a continuous ink jet printer
EP0744291A2 (de) * 1995-05-26 1996-11-27 SCITEX DIGITAL PRINTING, Inc. Verfahren zur Herstellung von Ladungselektroden
EP0744290A2 (de) * 1995-05-26 1996-11-27 SCITEX DIGITAL PRINTING, Inc. Verfahren zur Herstellung von Ladungselektroden
EP0744291A3 (de) * 1995-05-26 1998-03-04 SCITEX DIGITAL PRINTING, Inc. Verfahren zur Herstellung von Ladungselektroden
EP0744290A3 (de) * 1995-05-26 1998-03-04 SCITEX DIGITAL PRINTING, Inc. Verfahren zur Herstellung von Ladungselektroden
CN1083334C (zh) * 1997-03-25 2002-04-24 莱克斯马克国际公司 具有第一和第二打印盒的喷墨打印装置
WO2005108090A1 (en) * 2004-05-05 2005-11-17 Eastman Kodak Company Inkjet print head with charge device
US7156488B2 (en) 2004-05-05 2007-01-02 Eastman Kodak Company Ink repellent coating on charge device to improve printer runability and printhead life
US7404622B2 (en) 2004-05-05 2008-07-29 Eastman Kodak Company Ink repellent coating on charge device to improve printer runability and printhead life
US8104170B2 (en) 2004-10-15 2012-01-31 Eastman Kodak Company Charge plate fabrication technique

Also Published As

Publication number Publication date
DE69410852T2 (de) 1998-10-08
EP0613778A3 (de) 1995-04-05
DE69410852D1 (de) 1998-07-16
EP0613778B1 (de) 1998-06-10

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