LASER DIRECT DAMPENING WATERLESS PHOTOSENSITIVE PLANOGRAPHIC PRINTING PLATE

摘要

PROBLEM TO BE SOLVED: To provide a laser direct dampening waterless photosensitive planographic printing plate having high sensitivity and high image reproducibility and the excellent printing ink repulsiveness and printing resistance of a silicone rubber layer. SOLUTION: This laser direct dampening waterless photosensitive planographic printing plate has at least a photosensitive layer contg. a near IF absorbent and the silicone rubber layer in this order from a substrate on this substrate. The silicone rubber layer described above is formed of a silicone rubber compsn. contg. (a) organopolysiloxane having at least two pieces of aliphat. unsatd. groups in one molecule at >=80 to <98wt.% of the total solid content of the silicone rubber layer and (b) organopolysiloxane having at least two pieces of Si-H bonds in one molecule at >=2 to <20wt.% of the total solid content of the silicone rubber layer.