Patent ID: 7226724

Claim:
A photogravure printing plate precursor comprising (A) a photogravure plated roll, and (B) a positive-type photosensitive composition for photogravure printing consisting of novolac resin, resol resin, polyvinyl phenolic resin or copolymer of acrylic acid derivative having phenolic hydroxyl group, and a phthalocyanine pigment or a cyanine pigment, said pigment having an absorbing region at a part of or an entire infrared wavelength range, having a characteristic for absorbing laser beam in the infrared wavelength region to perform a thermolysis, and any one of adherence characteristic reforming agents selected from the group consisting of (1) vinyl pyrrolidone/vinylacetate copolymers, (2) polyvinylbutyral, (3) styrene/maleic acid copolymers, (4) vinylpyrrolidone/dimethylaminoethylmethacrylate copolymers, (5) terpolymers of vinylpyrrolidone/vinylcaprolactam/dimethylaminoethyl methacrylate, (6) terpenephenolic resin, (7) alkylphenolic resin, (8) polyvinylformal resin, (9) melamine/formaldehyde resin, (10) polyvinyl acetate, and (11) ketone resin, wherein the positive-type photosensitive composition is coated on the photogravure plated roll.