| 摘要 |
PROBLEM TO BE SOLVED: To provide a lithographic printing original plate that provides a lithographic printing plate having both excellent printing durability and tone reproducibility.SOLUTION: A lithographic printing original plate includes an image recording layer on a support; and the image recording layer contains (A) a radical generating agent, (B) a polymerizable compound, (C) a reversible addition-cleavage chain transfer agent, and (D) a sensitizing dye. The (C) reversible addition-cleavage chain transfer agent is preferably a compound having a thiocarbonylthio group. |
