| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a lithographic printing forme original plate capable writing with an infrared laser, having a protective layer and excellent in storage stability in a high temperature and high humidity environment. <P>SOLUTION: The lithographic printing forme original plate is obtained by sequentially stacking a photosensitive layer containing an infrared absorbent, a polymerization initiator, a polymerizable compound and a binder polymer and a protective layer containing an inorganic layered compound on a surface of an aluminum support having hydrophilicity, wherein the lithographic printing forme original plate contains a phosphonium compound in at least one of the photosensitive layer and the protective layer. <P>COPYRIGHT: (C)2007,JPO&INPIT |
