(19)
(11) EP 0 670 218 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
08.01.1997 Bulletin 1997/02

(43) Date of publication A2:
06.09.1995 Bulletin 1995/36

(21) Application number: 95301259.8

(22) Date of filing: 27.02.1995
(51) International Patent Classification (IPC)6: B41J 2/045
(84) Designated Contracting States:
DE GB IT

(30) Priority: 03.03.1994 JP 59872/94
20.01.1995 JP 6845/95

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

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

(74) Representative: Billington, Lawrence Emlyn et al
HASELTINE LAKE & CO Hazlitt House 28 Southampton Buildings Chancery Lane
London WC2A 1AT
London WC2A 1AT (GB)

   


(54) Ink jet head


(57) Disclosed is an ink jet head for jetting out an ink in a pressure chamber 26 by applying a pressure to the pressure chamber 26 for accommodating the ink. The ink jet head comprises a nozzle plate 20, including a nozzle 21 for jetting out the ink, a pressurizing plate 22 provided in parallel to the nozzle plate 20 and a wall member 24, exhibiting an elasticity, for forming the pressure chamber 26 by connecting the nozzle plate 20 to the pressurizing plate 22. The ink jet head further comprises a piezoelectric actuator 23, fixed to the pressurizing plate 22, for driving the pressurizing plate so as to deform the wall member 24.






Search report