Method and apparatus for axially positioning a printing plate
AssigneeKoenig & Bauer-Albert Aktiengesellschaft
InventorBernhard Walter Wolfgang Muth
Life of this patent
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Abstract
A method and an apparatus for axially positioning a flexible plate on a surface of a cylinder, that is divided into several axially spaced segments, utilizes a plate transport arrangement to transfer plates from a plate preparation device to the plate cylinder. The plate is axially shiftable during transport and arrives at the plate cylinder in proper axial position.
Claims7
A method for axially positioning a printing plate while it is being conveyed to a cylinder of a rotary printing press comprising:
- providing a printing plate preparation device;
- providing a printing plate conveying assembly;
- using said printing plate conveying assembly to convey said printing plate to said cylinder from said printing plate preparation device;
- providing a plurality of preselectable axially adjoining set positions on said cylinder;
- selecting one of said set positions from said plurality of set positions;
- determining a position of said printing plate in the axial direction of said cylinder in relation to a reference position on said cylinder;
- providing at least one printing plate lateral register stop remote from said cylinder;
- using said printing plate conveying assembly to move a lateral edge of said printing plate into engagement with said at least one remote lateral register stop during conveying of said printing plate to said cylinder;
- and
- bringing said printing plate to said preselected set position on said cylinder.
An apparatus for the axial positioning of a printing plate on a peripheral surface of a plate cylinder of a rotary printing press comprising:
- a printing plate preparation device situated adjacent the plate cylinder;
- a printing plate conveying device for use in conveying said printing plate from said printing plate preparation device to the plate cylinder;
- at least one printing plate lateral register stop positioned remote from the plate cylinder;
- means on said printing plate conveying device for shifting said printing plate axially with respect to said plate cylinder to engage a lateral edge of said printing plate with said at least one remote register stop during conveying of said printing plate from said printing plate preparation device to the plate cylinder;
- and
- means for positioning said printing plate on the cylinder in a position selected from several axially adjoining positions on the cylinder.
Dependencies are inferred from the claim text.