Patent ID: 6190832
Filing Date: 2001-02-20
Classification: G03F,Y10S

Abstract:
A precursor for a photopolymeric gravure printing plate comprising, arranged one on top of the otheri) the substrate layer (S),ii) a layer (A) which is crosslinkable by actinic radiation and comprises a mixture ofa.sub.1) at least one polymeric binder which is soluble or dispersible in water or in a water/alcohol mixture,a.sub.2) copolymerizable ethylenically unsaturated organic compounds which are compatible with said polymeric binder,a.sub.3) a photoinitiator or a photoinitiator system, anda.sub.4) optionally further assistants,iii) a parting layer (P),iv) a layer (B) which is sensitive to IR radiation, said layer (B) having an optical density .gtoreq.2.5 in the actinic range and comprisingb.sub.1) a film forming polymeric binder which is soluble or dispersible in water or in a water/alcohol mixture andb.sub.2) at least one substance which is finely distributed in said film forming binder, absorbs IR radiation and has a high absorbance in the wavelength range of from 750 to 20,000 nm, andv) a protective film,said layer (A) being bonded to the substrate layer (S) either directly or through an adhesion-promoting layer (AS), wherein the film forming polymeric binder b.sub.1) is selected from the group consisting of partially hydrolyzed polyvinyl esters, partially hydrolyzed vinylacetate/alkylene oxide graft copolymers, maleic anhydride copolymers, water soluble polyesters, water soluble polyethers, homo- and copolymers of vinylpyrrolidone, vinylcaprolactam, vinylimidazole, vinyl acetate and acrylamide, water-soluble urethanes, polyamides, and mixtures comprising two or more of the foregoing.