Abstract:
PURPOSE: To improve the adhesiveness of a relief layer to a carrier material and to shorten the exposure time when the printing plate is produced by incorporating a specified partially polymerized aryl glycidyl ether (meta)acrylate or using an intermediate layer formed there form. CONSTITUTION: An intermediate layer is deposited on a carrier, and further a photosensitive relief forming layer formed from the mixture of a polymer binder, photopplymerizable ethylenic unsaturated compd., photopolymerization initiator and thermopolymerization initiator is deposited. At least a partially polymerized compd. shown by formula I is further incorporated. In the formula, R is hydrogen or alkyls having 1-10 carbon atoms, R is hydrogen or methyl, X is -C2 H2 -, -(CH4 -CH2 -O)n -C2 H4 -, -(CHCH3 -CH2 O)n -CHCH3 -CH2 , etc., and (n) is 1 to 8. As a result the adhesiveness of the relief layer is remarkably improved, and the exposure time is drastically shortened when the printing plate is produced.