| abstract |
(57) [Summary] [Problem] To provide a negative-working, heat-peelable, direct-drawing lithographic printing plate precursor having good printout plate inspection properties. A direct drawing in which at least a heat-sensitive layer and a silicone rubber layer containing (A) a photothermal conversion substance, (B) a thermally decomposable compound, and (C) a thermosetting compound are laminated in this order on a substrate. In the lithographic printing plate precursor without water, at least one compound selected from azo compounds, diazo compounds and azide compounds is used as the thermally decomposable compound. |