CUTTING METHOD OF WIDE BAND-LIKE PLANOGRAPHIC PRINTING PLATE MATERIAL AND ROLL-LIKE PLANOGRAPHIC PRINTING PLATE MATERIAL

摘要

PROBLEM TO BE SOLVED: To provide a cutting method of cutting a wide band-like planographic printing plate material having a hydrophilic layer and an image forming layer in order on a plastic film base material and a back layer on the back to a narrow band-like planographic printing plate material without the occurrence of burr in the cut surface and separation of the back layer, and a roll-like planographic printing plate material formed by winding the narrow band-like planographic printing plate material round a winding core.;SOLUTION: In this cutting method, the hydrophilic layer and the image forming layer are formed in order on the running long plastic film base material, and the band-like planographic printing plate material having the back layer on the back is continuously cut to at least two narrow band-like planographic printing plate materials along the running direction using at least one set of rotary blades having a set of a disc-like upper blade and a drum-like lower blade rotated in the opposite directions to each other. In the cutting method of the wide band-like planographic printing plate material, the scratch strength of the back layer is 100 to 350g, and the back layer side is abutted on the upper blade side to cut the material.;COPYRIGHT: (C)2006,JPO&NCIPI