Method and device for automatically feeding printing plates to a

Details Method and device for automatically feeding printing plates to a Method and device for automatically feeding printing plates to a

1999-02-01

2000-04-25

Bennett, Christopher A.

Printing

Print plate feeding or delivering

1014151, B41F 2706

Patent

active

060531053

ABSTRACT:
A method and device for automatically feeding a printing plate to a plate cylinder of a printing press, includes a draw-in shaft for inserting a printing plate, a leading-edge clamping device on the plate cylinder, the draw-in shaft being positionable on the plate cylinder so that a printing plate therein is insertable by a leading edge thereof into the leading-edge clamping device due to a backward rotation of the plate cylinder, and a control for stopping the backward rotation of the plate cylinder after the leading edge of the printing plate has been inserted into the leading-edge clamping device, for closing the leading-edge clamping device, and for then initiating a forward rotation of the plate cylinder so as to wind the printing plate on the plate cylinder. A method and device for automatically removing a printing plate from a plate cylinder of a printing press, includes a holder on a draw-out shaft for preventing a backwards movement of the printing plate, the control continues a backwards rotation of the plate cylinder until, due to the opening of a leading-edge clamping device and a forward rotation of the plate cylinder and due to the position and arrangement of the draw-out shaft, wherein the end of the draw-out shaft is directed towards the plate cylinder, the printing-plate leading edge is deposited on this end. The method and devices are combinable into one method and one apparatus or combination of devices.

REFERENCES:
patent: 5394614 (1995-03-01), Lindner et al.
patent: 5406888 (1995-04-01), Sugiyama et al.
patent: 5443006 (1995-08-01), Beisel et al.
patent: 5495805 (1996-03-01), Beisel et al.
patent: 5537926 (1996-07-01), Beisel et al.
patent: 5540151 (1996-07-01), Ruckmann et al.
patent: 5555810 (1996-09-01), Stiel
patent: 5595119 (1997-01-01), Hada et al.
patent: 5701822 (1997-12-01), Metrope

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