(19)
(11) EP 0 268 857 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
18.10.1989 Bulletin 1989/42

(43) Date of publication A2:
01.06.1988 Bulletin 1988/22

(21) Application number: 87115762.4

(22) Date of filing: 27.10.1987
(51) International Patent Classification (IPC)4: B41F 27/12, B41F 33/00
(84) Designated Contracting States:
DE FR GB IT

(30) Priority: 20.11.1986 JP 275465/86

(71) Applicant: MITSUBISHI JUKOGYO KABUSHIKI KAISHA
Tokyo 100 (JP)

(72) Inventors:
  • Matsumoto, Takemasa Mihara Machinery Works
    Mihara-shi Hiroshima-ken (JP)
  • Tasaka, Norifumi Mihara Machinery Works
    Mihara-shi Hiroshima-ken (JP)
  • Matsuura, Yoshiro Mihara Machinery Works
    Mihara-shi Hiroshima-ken (JP)

(74) Representative: Henkel, Feiler, Hänzel & Partner 
Möhlstrasse 37
81675 München
81675 München (DE)


(56) References cited: : 
   
       


    (54) Automatic plate exchange control system for a sheet offset printing machine


    (57) In a sheet offset printing machine including means for mounting and dismounting a plate, means for tensioning the plate, means for stopping a plate cylinder at a predetermined position and means for detecting a plate mount position, a control system for automatically exchanging the plate is provided, which comprises a con­trol circuit for a rotary actuator for tensioning a plate, a control circuit for air cylinders for opening and clos­ing plate vices, a control circuit for a servo motor for stopping a plate cylinder at a predetermined position, and a control circuit for a plate mount position detector.







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