(19)
(11) EP 1 031 422 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
10.01.2001 Bulletin 2001/02

(43) Date of publication A2:
30.08.2000 Bulletin 2000/35

(21) Application number: 00107972.2

(22) Date of filing: 27.02.1995
(51) International Patent Classification (IPC)7: B41J 2/045, B41J 2/14
(84) Designated Contracting States:
DE GB IT

(30) Priority: 03.03.1994 JP 5987294
20.01.1995 JP 684595

(62) Application number of the earlier application in accordance with Art. 76 EPC:
95301259.8 / 0670218

(71) Applicant: FUJITSU LIMITED
Kawasaki-shi, Kanagawa 211-8588 (JP)

(72) Inventors:
  • Onda, Nobuhiko, Fujitsu Limited
    Kawasaki-shi, Kanagawa 211-8588 (JP)
  • Mikami, Tomohisa, Fujitsu Limited
    Kawasaki-shi, Kanagawa 211-8588 (JP)
  • Nakazawa, Akira, Fujitsu Limited
    Kawasaki-shi, Kanagawa 211-8588 (JP)
  • Kutami, Miohinori, Fujitsu Limited
    Kawasaki-shi, Kanagawa 211-8588 (JP)
  • Suzuki, Shigeharu, Fujitsu Limited
    Kawasaki-shi, Kanagawa 211-8588 (JP)
  • Yamagishi, Fumio, Fujitsu Limited
    Kawasaki-shi, Kanagawa 211-8588 (JP)
  • Kato, Masayuki, Fujitsu Limited
    Kawasaki-shi, Kanagawa 211-8588 (JP)
  • Koike, Shuji, Fujitsu Limited
    Kawasaki-shi, Kanagawa 211-8588 (JP)
  • Kashioka, Junji, Fujitsu Limited
    Kawasaki-shi, Kanagawa 211-8588 (JP)
  • Sakai, Shino, Fujitsu Limited
    Kawasaki-shi, Kanagawa 211-8588 (JP)
  • Taniguchi, Osamu, Fujitsu Limited
    Kawasaki-shi, Kanagawa 211-8588 (JP)
  • Soneda, Hiromitsu, Fujitsu Limited
    Kawasaki-shi, Kanagawa 211-8588 (JP)

(74) Representative: Billington, Lawrence Emlyn et al
Haseltine Lake & Co. Imperial House 15-19 Kingsway
London WC2B 6UD
London WC2B 6UD (GB)

   


(54) Ink jet head


(57) A multi-nozzle ink jet head comprising a plurality of pressure chambers adapted for accommodating ink; a plate or plates including a plurality of nozzles for jetting ink particles out of the pressure chambers when pressure is applied to the pressure chambers; a pressurizing member (43) including a plurality of pressurizing plates (22) separated from one another and provided for respective ones of the pressure chambers; and actuating means for driving each pressurizing plate (22) independently in order to apply pressure to said pressure chambers; wherein said pressurizing member (43) comprises a common holding member (430), said plurality of pressurizing plates (22), and a plurality of ribs connecting said plurality of pressurizing plates (22) to said common holding member (430).






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