| 摘要 |
PROBLEM TO BE SOLVED: To provide an original plate for a printing plate having a photosensitive layer comprising a photopolymerizable composition capable of satisfying both high sensitivity and excellent storage stability in a photo radical polymerization system composition having the highest sensitivity and bright prospects even in an image forming technique and to provide a method for making the printing plate. SOLUTION: The original plate for the printing plate having a photosensitive layer comprising a photopolymerizable composition containing (i) a crosslinker having two ethylenic polymerizable groups and (ii) a crosslinker having three or more ethylenic polymerizable groups is exposed and developed with an alkali developing solution of <=pH 12.5. |
