| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a direct drawing type waterless lithographic printing plate precursor having a wide development latitude of minute dots and excellent in scratch resistance, particularly resistance to scratches generated by a developing brush. <P>SOLUTION: The direct drawing type waterless lithographic printing plate precursor has at least a heat insulating layer, a thermosensitive layer and a silicone rubber layer in this order on a substrate, wherein the thermosensitive layer comprises at least (A) a photothermal conversion material, (B) a metal-containing organic compound, (C) a novolac resin and (D) a polyurethane resin; the novolac resin (C) comprises two kinds of novolac resins different in weight average molecular weight; one of molecular weight distributions of the novolac resins by GPC has a maximum at 500-5,000; the other has a maximum at 10,000-50,000; and the silicone rubber layer comprises a specific polysiloxane. <P>COPYRIGHT: (C)2009,JPO&INPIT |
