Patent ID: 7559544
Filing Date: 2009-07-14
Classification: B65H

Abstract:
1. A device for singly separating flat objects of different flexibility, including rigid printing plates and flexible interleaves, from a stack, the device comprising: at least one suction element for sucking up an object with a suction air flow, said suction element having a suction surface being peripherally delimited by a suction lip, said suction surface and said suction lip both being rubber-elastic; and at least one form element at least approximately enclosing said at least one suction element, said at least one form element having boundaries spaced from said at least one suction element, said boundaries forming and enclosing a lower surface, said lower surface lying at least approximately parallel to the objects, and said lower surface being spaced from said suction surface, said suction surface lying underneath said lower surface in an inactive condition, and said suction surface being configured to become deformed in a direction of said suction air flow upon sucking up the flexible interleaf causing said deformed suction surface to lie approximately above said lower surface and at least one air channel to be formed beneath the flexible interleaf by deforming the flexible interleaf, and said suction surface and said suction lip being configured for forming a substantially flat plane against the printing plate for preventing a deformation of the printing plate during the sucking up of the printing plate, said boundaries being formed with recesses or notches deviating formwise from a plane defined by said lower surface, said recesses or notches including a first recess forming at least one groove, said recesses or notches including a second recess or notch in a direction different from that of said at least one groove to form at least one second air channel.