Patent ID: 6387594
Filing Date: 2002-05-14
Classification: B41M,C09B,C09D,G03F,Y10T

Abstract:
A plate making method, the method comprising;a) drawing an image on a surface layer of a plate making film, the plate making film including said surface layer and a transparent substrate, said surface layer comprising a polymeric compound that includes recurring monomeric units of the general formula; [-AXAR1-]â€ƒwherein A is; (â€”CH2CH2Oâ€”) â€ƒand â€ƒsuch that the mode of addition of A produces a polymer of the general formula; wherein x, y and z each denote an integer of 1 or more and x, y and z have a weight ratio calculated from 44(x+z)/72y that ranges from 80/20 to 94/6, X is a residue of ethylene glycol, and R1 is a dicarboxylic acid compound residue, or a diisocyanate compound residue, b) bringing the drawn plate making film into intimate contact with a photosensitive member; c) exposing the photosensitive member through the plate making film; d) stripping the plate making film from the photosensitive member; and e) developing the photosensitive member.