| 摘要 |
PURPOSE:To stabilize sensitivity after exposing of a printing plate and to enhance the reproducibility of small dots by incorporating a compd. which captures the acid generated by active rays and forms amine by hydrolysis into a titled compsn. CONSTITUTION:The compd. (A) which generates the acid when irradiated with the active rays, the compd. (B) which has >=1 bonds to be decomposed by said acid, and the compd. (C) which captures said acid and forms the amine compd. by hydrolysis without being decomposed by the irradiation of the active rays are incorporated into the titled compsn. A 2-halomethyl-1,3,4-oxadiazole compd. is usable for the component A, the compd. expressed by the formula I (where Mw=1,700, Mw/Mn=2.1) for the component B, and the compd. expressed by the formula II for the component C. The photosensitive lithographic printing plate which has the high stability of sensitivity after exposing and the excellent reproducibility of small dots and raw preservable property is obtd. by coating the soln. of the above-mentioned compsn. on a base and drying the coating. |
