| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a lithographic printing plate original plate, which can be directly made up by being scanned with infrared laser and can improve sensitivity press developing properties and plate wear, and a printing method with a lithographic printing plate. <P>SOLUTION: This lithographic printing plate original plate has an image recording layer, which includes (A) infrared absorbing coloring matter soluble in aqueous liquid, (B) polymerization initiator, (C) polymerizable compound and (D) oleophilic binder polymer, on a support and which can be removed with printing ink and/or damping water. In this lithographic printing method, printing is performed by feeding oily ink and aqueous component to the lithographic printing plate original plate and removing the non-exposed portion to infrared laser of the lithographic printing plate original plate. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
