| 摘要 |
PROBLEM TO BE SOLVED: To provide a photosensitive lithographic printing plate for CTP which is superior in small-dot reproducibility and further has high sensitivity and high printing durability and a photosensitive lithographic printing plate for CTP with high sensitivity and high printing durability which is excellent in small-dot reproducibility and senses a violet laser. SOLUTION: Disclosed is the photosensitive lithographic printing plate having a photopolymerizable photosensitive layer containing a compound which has at least two ethylenenic unsaturated double bonds and is capable of additional polymerization, an alkali-soluble or swelling binder, and a photopolymerization initiation system on a support, the photosensitive lithographic printing plate being characterized in that the photopolymerizable photosensitive layer contains a compound selected from (a) a compound which has three or more ethylenic unsaturated groups in one molecule and a≤800 molecular weight and is selected from acrylate and methacrylate and (b) a compound selected from an epoxy acrylate compound and a methacrylate compound which have two or three ethylenic unsaturated groups in one molecule as the compound which has at least ethylenenic unsaturated double bonds on a base and is capable of additional polymerization. COPYRIGHT: (C)2006,JPO&NCIPI |
