A LITHOGRAPHIC PRINTING PLATE PRECURSOR INCLUDING (ETHYLENE, VINYL ACETAL) COPOLYMERS

摘要

A positive-working lithographic printing plate precursor is disclosed which comprises a support having a hydrophilic surface or which is provided with a hydrophilic layer, and a heat- and/or light-sensitive coating provided comprising at least two different (ethylene vinyl) acetal copolymer including a plurality of ethylenic moieties A having a structure according to formula (a) wherein R2 and R3 independently represent hydrogen, a halogen or an optionally substituted linear, branched or cyclic alk(en)yl group, or an optionally substituted aromatic or heteroaromatic group.