| 摘要 |
PROBLEM TO BE SOLVED: To provide a directly laser writable negative photopolymerizable lithographic printing plate having higher sensitivity by an adhesive force of a rigid resistant photosensitive layer to a support, excellent plate wear resistance without skipping a fine line or a high-light even by removing an ink of a plate surface by an acid plate cleaner or printing a large quantity. SOLUTION: In the photopolymerizable lithographic printing plate comprising a photopolymerizable photosensitive layer containing a compound having addition polymerizable ethylenic double bond, a photopolymerization initiator and an organic high molecular weight polymer on a roughed and anodized aluminum support, an acid resistant film layer is provided between an anodized film layer and the photosensitive layer. Thus, an adhesive force of the photosensitive layer to the support can be improved, and high sensitivity can be obtained. |
