| 摘要 |
PURPOSE:To obtain good image reproducibility by incorporating a quinone diazide compd. and polyamide and/or polyurethane contg. an amino group into a photosensitive layer at specific weight. CONSTITUTION:100pts.wt. quinone diazide compd. and 5-1,000pts.wt. polyamide and/or polyurethane contg. the amino group are incorporated into the photosensitive layer of a waterless lithographic printing plate formed by coating the photosensitive layer contg. the quinone diazide compd. and silicone rubber layer in this order on a base. Only the silicone rubber layer in the unexposed part is thereby removed with substantially no decrease in the thickness of the photosensitive layer by the selection of a developing solvent; therefore, the transfer of ink to an ink receiving part at the time of printing is good and the printed matter having a good gradation characteristic is obtd. |
