(19)
(11) EP 0 602 021 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
31.08.1994 Bulletin 1994/35

(43) Date of publication A2:
15.06.1994 Bulletin 1994/24

(21) Application number: 94200483.9

(22) Date of filing: 30.10.1989
(51) International Patent Classification (IPC)5: B41J 2/16
(84) Designated Contracting States:
DE ES FR GB IT NL

(30) Priority: 31.10.1988 JP 275794/88
31.10.1988 JP 275797/88
31.10.1988 JP 275800/88
13.01.1989 JP 7470/89
13.01.1989 JP 7403/89
13.01.1989 JP 7409/89
13.01.1989 JP 7410/89
18.01.1989 JP 9181/89
18.01.1989 JP 9184/89
28.01.1989 JP 18079/89

(62) Application number of the earlier application in accordance with Art. 76 EPC:
89311199.7 / 0367541

(71) Applicant: CANON KABUSHIKI KAISHA
Tokyo (JP)

(72) Inventors:
  • Watanabe, Takashi
    Yokohama-shi, Kanagawa-ken (JP)
  • Masuda, Kazuaki
    Shimomaruko, Ohta-ku, Tokyo (JP)
  • Goto, Akira c/o Canon Kabushiki Kaisha
    Ota-ku, Tokyo (JP)
  • Kono, Hiroshi
    Yokohama-shi, Kanagawa-ken (JP)
  • Kanzaki, Takashi
    Yokohama-shi, Kanagawa-ken (JP)
  • Kashino, Toshio
    Chigasaki-shi, Kanagawa-ken (JP)
  • Saito, Akio
    Hadano-shi, Kanagawa-ken (JP)
  • Midorikawa, Koyo
    Tokyo (JP)
  • Okumura, Toru
    Yokohama-shi, Kanagawa-ken (JP)
  • Ikeda, Masami
    Tokyo (JP)
  • Kuwabara, Nobuyuki
    Shimomaruko, 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: : 
   
     
    Remarks:
    This application was filed on 25 - 02 - 1994 as a divisional application to the application mentioned under INID code 60.
     


    (54) Ink jet head and manufacturing method thereof, discharge opening plate for head and manufacturing method thereof, and ink jet apparatus with ink jet head


    (57) A discharge opening plate (503) for an ink jet recording head comprises a plate (503) having a through hole forming a discharge opening, a water repellant cover layer (531) on one surface of the plate and an adhesive layer (533) provided on its other surface. An ink jet recording head may be manufactured by adhering this plate (503) to a head body (507) having an ink path arranged to correspond to the through hole opening.






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