| 摘要 |
PURPOSE:To provide the binder which is useful to obtain the printintg plate high in sensitivity and stable to the lapse of time in the planographic printing plate using silver complex salt diffusion-transfer process. CONSTITUTION:In the planographic printing plate, the polymer compd. expressed by the formula is used as the binder of a physical developing nucleus layer. In the formula, each of R1, R2, R3 and R4 is hydrogen atom or a lower alkyl group, R5 and R6 is an alkyl or alkylene group having <=10C and L is a bivalent alkylene group which may have substd. group. (m) and (n) is mol.% (m) is at range of 1-50mol.%, (n) is at range of 0-99mol.%. |
