| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide the lithographic printing method including the lithographic printing original plate having a printing plate with higher visibility after exposure and the on-press development of this lithographic printing original plate. <P>SOLUTION: A lithographic printing plate precursor comprising an image-recording layer containing at least one compound selected from the group consisting of a spiropyran compound and a spirooxazine compound on a support, and an acid generator, and a lithographic printing method including a process of removing the unexposed area of the image-recording layer on a printing press. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
