| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a positive photosensitive planographic printing plate having both of printing durability and color remaining property, good adhesion property with a mat, and to provide a positive photosensitice planographic printing plate showing good printing durability and color remaining property even when the plate is developed with a developer containing no silicate. SOLUTION: This printing plate is produced by forming an intermediate layer on an aluminum supporting body subjected to hydrophilicity imparting treatment, and by forming a photosensitive layer on the intermediate layer. The intermediate layer contains a polymer compd. having a structural component having acid groups and a structural component having onium groups. The photosensitive layer contains a polymer compd. consisting of the structural components of (a) polymerizable monomers expressed by the formula, (b) (meth) acrylonitrile, (c) (meth)acrylate and (d) other polymerizable monomers. In the formula, P and R are independently bivalent org. groups, Q and Z are independently aromatic or substd. aromatic groups, R8 is a hydrogen atom, alkyl group or halogen atom, p, q, r, z are independently 0 or 1, and n is an integer 1 to 3.</p> |
