| 摘要 |
PROBLEM TO BE SOLVED: To provide a photosensitive resin composition and an original plate for a flexographic printing plate which can produce a flexographic printing plate with reduced dot gains and is excellent in image reproducibility. SOLUTION: The photosensitive resin composition contains at least a conjugated diene ethylenic polymer comprising a conjugated diene polymer and ethylenic unsaturated groups bonded to the conjugated diene polymer's end and/or side chain, and a photopolymerization initiator, where the conjugated diene ethylenic polymer contains not less than 60 wt.% of a low molecular weight component A of which the number average molecular weight, measured by GPC, not less than 1,000 and less than 10,000, and not less than 20 wt.% of a high molecular weight component B of which the number average molecular weight not less than 10,000 and less than 50,000. |
