Patent ID: 6132935
Filing Date: 2000-10-17
Classification: B41C,Y10S

Abstract:
A negative-working lithographic printing plate comprising a support having thereon (1) a photosensitive layer comprising the following components (a), (b) and (c), or (2) a photosensitive layer comprising the following component (a) and a separate layer comprising the following components (b) and (c): (a) a substance which absorbs infrared rays or near infrared rays to generate heat, which substance is a dye selected from the group consisting of azo dyes, anthraquinone dyes, phthalocyanine dyes, carbonium dyes, quinoneimine dyes, methine dyes, and cyanine dyes (b) a water-insoluble and aqueous alkali-soluble resin having a phenolic hydroxyl group or olefinically unsaturated bond and (c) a phenol derivative composed of 4 to 8 benzene rings in which there is present at least one phenolic hydroxyl group and at least two groups represented by the general formula (I):--CH.sub.2 OR.sup.1 (I)wherein R.sup.1 represents a hydrogen atom, an alkyl group or an acyl group.