(19)
(11) EP 0 420 469 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
18.09.1991 Bulletin 1991/38

(43) Date of publication A2:
03.04.1991 Bulletin 1991/14

(21) Application number: 90310168.1

(22) Date of filing: 17.09.1990
(51) International Patent Classification (IPC)5: B41J 2/135
(84) Designated Contracting States:
DE FR GB

(30) Priority: 18.09.1989 JP 241026/89

(71) Applicant: CANON KABUSHIKI KAISHA
Ohta-ku Tokyo 146 (JP)

(72) Inventors:
  • Arashima, Teruo
    Ohta-ku, Tokyo (JP)
  • Kimura, Makiko
    Ohta-ku, Tokyo (JP)
  • Kashino, Toshio
    Ohta-ku, Tokyo (JP)
  • Sugitani, Hiroshi
    Ohta-ku, Tokyo (JP)
  • Hattori, Yoshifumi
    Ohta-ku, Tokyo (JP)
  • Ikeda, Masami
    Ohta-ku, Tokyo (JP)
  • Saito, Asao
    Ohta-ku, Tokyo (JP)
  • Masuda, Kazuaki
    Ohta-ku, Tokyo (JP)
  • Saito, Akio
    Ohta-ku, Tokyo (JP)
  • Orikasa, Tsuyoshi
    Ohta-ku, Tokyo (JP)

(74) Representative: Beresford, Keith Denis Lewis et al
BERESFORD & Co. 2-5 Warwick Court High Holborn
London WC1R 5DJ
London WC1R 5DJ (GB)


(56) References cited: : 
   
       


    (54) Ink jet cartridge and ink jet apparatus having same


    (57) An ink jet cartridge includes a top plate (4) having an orifice plate (4a) in which ejection outlets (2) for permitting ejection of ink is formed and a portion for defining ink passages (7) communicating with the ink ejection outlets; a base plate (1) joined with the top plate (4) to define the ink passage; a thin plate having a connecting region for pressing and fixing the orifice plate to the base member; an ink container (15c) for containing the ink to be supplied to the ink passages (7); wherein the thin plate is connected with the orifice plate (4a) at at least one of three sides of the orifice plate (4a).






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