| 摘要 |
PURPOSE:To form a lithographic plate requiring no water capable of reproducing good fine dots even when a photosensitive layer is thin by incorporating a light absorber in a photosensitive layer. CONSTITUTION:The photosensitive layer contains the light absorber having the absorption max. between 300-450nm in the UV and visible absorption spectra, and, preferably, an absorption max. molar extinction coefft. of 200-40,000l/mol, preferably, embodied by benzophenone derivs., especially, aminobenzophenone represented by formula 1 in which R1, R2, R3, and R4 are each H or 1-4C alkyl. |
