Offset printing machine

Details Offset printing machine Offset printing machine

1995-12-05

1998-03-17

Bennett, Christopher A.

Printing

Print plate feeding or delivering

101142, 101216, B41F 500

Patent

active

057274711

ABSTRACT:
There is provided a plate carrier mechanism A having an endless plate belt 3 hung on between a pair of pulleys 2p and 2q spaced from each other, and a blanket carrier mechanism B having an endless blanket belt 5 hung on between a pair of pulleys 4p and 4q spaced from each other, the blanket carrier mechanism B is adapted to be displaceable to a pressure-contacting position Pp or a separating position Pr to the place carrier mechanism A, also, a speed of an outer surface of the plate belt 3 is made greater than that of the blanket belt 5, and the plate carrier mechanism A is of a driving side and the blanket carrier mechanism B is of a driven side, and the plate carrier mechanism A and the blanket carrier mechanism B are connected to each other through a rotation transmitting gear mechanism 6 having a predetermined play which can absorb a difference of the speed of the outer surface of the plate belt 3 and the speed of the outer surface of the blanket belt 5. Thereby a transfer shift between the plate belt and the blanket belt is prevented.

REFERENCES:
patent: 2374668 (1945-05-01), Davidson
patent: 4846057 (1989-07-01), Endo et al.
patent: 5181466 (1993-01-01), Ono
patent: 5390597 (1995-02-01), Hashimoto et al.
patent: 5564337 (1996-10-01), Uehara et al.
patent: 5575213 (1996-11-01), Kawai et al.

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