| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a lithographic printing plate original plate, in which an image recording is possible by scanning with infrared laser and which is excellent in on-press developability, fine line reproducibility, sensibility and plate wear, and a lithographic printing method. <P>SOLUTION: This lithographic printing plate original plate has an image recording layer, which is formed by including (A) an infrared absorber, (B) a polymerization initiator, (C) a polymerizable compound and (D) a specified fluoro-aliphatic group-containing copolymer and can be removed by printing ink or dampening water or by both of them. This lithographic printing method is performed by installing the lithographic printing plate original plate onto a printing machine so as to expose the plate image-wise to infrared laser and supply oily ink and watery component to the plate in order to remove the infrared laser non-exposed portion from the plate for printing. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
