| 摘要 |
The planographic printing plate precursor of the invention contains a substrate and a positive recording layer prepared on the substrate, and the recording layer contains (A) a polymer having a urea bond in a side chain, (B) a photothermal conversion agent, and (C) an amino compound having a methylol group or an alkoxymethyl group, and its solubility in an alkaline developing solution is improved by light-exposure or heating. |
