Patent ID: 6013412
Filing Date: 2000-01-11
Classification: B41C,B41M,G03F,Y10S

Abstract:
A negative planographic printing plate for use with an infrared laser, comprising:a substrate which is an aluminum plate; anda negative image recording material provided on the substrate and comprising a polyurethane resin having a carboxyl group, a compound crosslinkable by an acid, and a compound generating an acid due to application of light or heat, wherein said compound crosslinkable by an acid is a phenol derivative having, in a molecule, 4 to 8 benzene nuclei, at least one phenolic hydroxyl group, and at least two groups represented by the formula (IV);--CH.sub.2 OR.sup.6 (IV)wherein R.sup.6 represents a hydrogen atom, an alkyl group or an acyl group.