PHOTOSENSITIVE RESIN COMPOSITION AND ORIGINAL PLATE FOR FLEXOGRAPY BOARD

摘要

PROBLEM TO BE SOLVED: To provide photosensitive resin composition and original plate for flexograpy board which can form the flexograpy board which can suppress image fatness (dot gain) and obtain an excellent image reproducibility. SOLUTION: The photosensitive resin composition has features to contain a conjugated a diene ethyleny polymer in which an ethyleny unsaturated group combines with the end and/or the side-chain of conjugated diene polymer and have the number averaged molecule weight is between 1000 and 10000, and Z-averaged molecular weight/number averaged molecular weight is between 3.0 and 20.0.