Patent ID: 7069855

Claim:
A printing press with a plate cylinder, on which a printing plate is to be mounted, comprising: a clamping gripper being provided on the plate cylinder so as to clamp an edge of the printing plate; and a plate discharge device for moving the printing plate in a plate discharge direction with a trailing edge of the printing plate as a leading edge after the printing plate is released from a clamped relationship with the clamping gripper; said plate discharge device comprising: a plate guide member for forming a plate discharge passage in the plate discharge direction; a transfer member disposed along the plate discharge passage for being brought into contact with a printing plate, which has been released from the clamped relationship with the clamping gripper, so as to transfer the printing plate in the plate discharge direction; an extendable device for reciprocatingly moving the transfer member along the plate guide member through the length of the reciprocating stroke thereof; and a moving distance addition means for allowing the printing plate, which is kept in contact with the transfer member, to be moved in the plate discharge direction through a distance obtained by adding a given distance to the distance corresponding to the length of the reciprocating stroke of the extendable device.