(19)
(11) EP 0 290 219 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
04.07.1990 Bulletin 1990/27

(43) Date of publication A2:
09.11.1988 Bulletin 1988/45

(21) Application number: 88303981.0

(22) Date of filing: 03.05.1988
(51) International Patent Classification (IPC)4: B41J 19/20
(84) Designated Contracting States:
DE FR GB IT

(30) Priority: 02.05.1987 JP 109589/87
19.05.1987 JP 121550/87

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

(72) Inventors:
  • Sasaki, Ryoichi c/o Brother Kogyo Kabushiki Kaisha
    Nagoya-shi Aichi-ken (JP)
  • Sata, Youji c/o Brother Kogyo Kabushiki Kaisha
    Nagoya-shi Aichi-ken (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: : 
   
     
    Remarks:
    The title of the invention has been amended (Guidelines for Examination in the EPO, A-III, 7.3).
     


    (54) Carriage movement control in a printer


    (57) In a printing apparatus wherein the print direction is selected properly on a print line basis so that the path of movement of a carriage (22) becomes shortest, a problem exists that intervals between characters are not kept constant due to backlash or elongation of a wire of a carriage driving system when the print direction is reversed.
    The disclosed is a printing apparatus which performs regulation of the positional errors of the carriage (22) due to backlash and wire elongation by moving the carriage to the print start position after moving it to the print position preceding the print start position when the print direction of a print line is reverse to the print direction of the succeeding print line (5), and a printing apparatus which performs regulation likewise the above-mentioned in the case where the direction of movement of the carriage (22) to the relocation position is reverse to the print direction of succeeding printing when the original position of the carriage (22) is set again in response to a suspension of printing.







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