| 摘要 |
PURPOSE: To obtain a waterless planographic printing plate satisfying all of sensitivity, tone reproducibility, printing resistance and flaw resistance by incorporating a specified photopolymerizable monomer and a photopolymn. initiator into a photopolymerizable photosensitive layer. CONSTITUTION: A photopolymerizable photosensitive layer and a silicone rubber layer are successively laminated on a substrate and at least one kind of photopolymerizable monomer represented by formula I and a photopolymn. initiator are incorporated into the photosensitive layer. In the formula I, (a) is an integer of 0-30, Y is -COO-, -OCO-, -CONH-, -O-, -NH-, etc., L1 is optionally substd. alkylene, L2 is optionally substd. alkylene, phenylene or aralkylene, each of (p) and (q) is 0 or 1, each of R<2> and R<3> is H, alkyl or a group represented by formula II [where (n) is an integer of 1-15, R<4> is H or 1-4C alkyl, R<5> is H or methyl, X is-COO-,-CONH-, etc., and each of L3 and L4 is alkylene]. |
