Patent ID: 6112664
Filing Date: 2000-09-05
Classification: B41F,G03F,Y10T

Abstract:
A plate making apparatus for planographic printing in multiple colors, in which an image is formed on a flexible plate material made of a photosensitive material which is wound into a roll shape and stored in a storage section to thereby form a press plate, and the press plate is placed on a plate cylinder when a planographic printing in multiple colors is executed, said plate making apparatus comprising:a cutter placed between said storage section and an exposure section for cutting the rolled plate material into a cut sheet shape; anda punch mechanism for forming plate cylinder engagement holes in left and right margins of the plate material along a transport direction thereof, the plate cylinder engagement holes being engaged in protrusions disposed in a circumferential direction of left and right margins of the plate cylinder,in which said cutter and said punch means are formed in one piece.