(19)
(11) EP 0 605 098 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
07.12.1994 Bulletin 1994/49

(43) Date of publication A2:
06.07.1994 Bulletin 1994/27

(21) Application number: 93309061.5

(22) Date of filing: 12.11.1993
(51) International Patent Classification (IPC)5B41J 11/20, B41J 11/02, B41J 1/32
(84) Designated Contracting States:
DE GB

(30) Priority: 12.11.1992 JP 302494/92
17.05.1993 JP 114916/93

(71) Applicant: BROTHER KOGYO KABUSHIKI KAISHA
Nagoya-shi, Aichi-ken 467 (JP)

(72) Inventors:
  • Ninomiya, Akira
    Nagoya, Aichi, 458 (JP)
  • Imoto, Yasuo
    Nagoya, Aichi, 455 (JP)
  • Yamada, Noriyuki
    Mizuho-ku, Nagoya, Aichi-ken, 467 (JP)

(74) Representative: Senior, Alan Murray et al
J.A. KEMP & CO., 14 South Square, Gray's Inn
London WC1R 5LX
London WC1R 5LX (GB)


(56) References cited: : 
   
       


    (54) Serial impact printer


    (57) A serial impact printer comprises at least two and preferably four platen parts (8A-8D) facing a print head (2) with a printing medium (P) interposed therebetween. One of the platen parts (8A-8D), each having a different arrangement of projections (E), is selected according to the thickness of the printing medium (P). The projections (E) correspond to the print wires (W) on the print head (2). The selected platen part (8A-8D) operates in cooperation with the print head (2) so that stable, high quality printing is performed on the printing medium (P) of varying thicknesses, from a single cut sheet to multiple-sheet paper sets. With optimum projections (E) selected to assist the printing by the print wires (W), the printed sheets are protected from piercing by the print wires (W).







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