(19)
(11) EP 0 613 778 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
05.04.1995 Bulletin 1995/14

(43) Date of publication A2:
07.09.1994 Bulletin 1994/36

(21) Application number: 94301322.7

(22) Date of filing: 24.02.1994
(51) International Patent Classification (IPC)5: B41J 2/085
(84) Designated Contracting States:
DE FR GB

(30) Priority: 01.03.1993 US 24548

(71) Applicant: SCITEX DIGITAL PRINTING, Inc.
Dayton, Ohio 45420-4099 (US)

(72) Inventor:
  • Sexton, Richard W.
    Dayton, Ohio 45404 (US)

(74) Representative: Hillier, Peter et al
Reginald W. Barker & Co., Chancery House, 53-64, Chancery Lane
London, WC2A 1QU
London, WC2A 1QU (GB)


(56) References cited: : 
   
       


    (54) Passivation layer for ceramic based charge plates


    (57) A charge plate structure for use in a continuous ink jet printer is provided with a protective layer of adhesively bonded polyimide film. The charge plate is fabricated by forming a substrate having charging electrodes along one edge and corresponding conductive leads on one surface. The surface of the charge plate is precleaned and the polyimide film is laminated thereto by means of heat and pressure. The resulting charge plate exhibits improved adhesion and protection from ink.






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