| 摘要 |
PROBLEM TO BE SOLVED: To provide an original plate for a lithographic printing plate, which has favorable on-machine developing properties, and in addition, has a high sensitivity, and of which the printing durability is favorable. SOLUTION: This original plate for a lithographic printing plate has an image-forming layer on a hydrophilic supporting body. In this case, the image- forming layer contains (A) at least one component which is selected from micro- capsules encapsuling hydrophobic particles and hydrophobic compounds, (B) a polymerization starter which is selected from borate based compounds and triazine based compounds, (C) a photothermal conversion agent, and (D) a compound having a radical polymeric group. |
