| 摘要 |
PURPOSE: To obtain an original plate excellent in printing resistance, excellent also in development reproducibility and advantageous to the production of high definition printed matter by containing a polymerizable compd. having a specified structure into a photosensitive layer. CONSTITUTION: This original plate has a photopolymerizable photosensitive layer contg. a compd. having at least one structure represent.ed by the formula, at least one amino group structure and at least one ethylenically unsatd. bond. In the formula, each of X and Y is B, optionally substd. C, N, optionally substd. Al, optionally substd. Si, P, S, Ti, Cr, Mn, Fe, Ni, Cu, Zn, Pd, Sn, Pi or Pb, each of Ll and L2 is a combining group contg. 1-20C optionally substd. alkyl, 2-20C alkenyl or 4-20C aryl, the combining group may contain an ester bond in the chain and Ll and L2 may be different from each other. |
