| 摘要 |
PURPOSE:To obtain a photosensitive compsn. suitable for a planographic printing plate having superior resistance to treating chemicals, high sensitivity and a wide development latitude by incorporating a specified compd. and a polymer having units each having a phenolic OH group in the molecule. CONSTITUTION:This photosensitive compsn. contains a compd. having a structure represented by the formula (where each of R1 and R2 is H, halogen atom, alkyl, aryl, carboxyl or a salt thereof, R3 is H, halogen atom, alkyl aryl or aralkyl, Y is bivalent (substd.) arom. group, X is a bivalent org. group and n=0-5) and a polymer having units each having a phenolic OH group in the molecular structure. A photosensitive planographic printing plate using the photosensitive compsn. has superior resistance to treating chemicals, especially a plate cleaner and a detergent soln. used in printing with UV ink, a wide development latitude, superior over-developability and under-developability. The compsn. is especially suitable for a positive type photosensitive planographic printing plate. |
