| abstract |
(57) [Summary] [PROBLEMS] To provide an on-press development type lithographic printing plate which can be mounted on a printing press as it is after exposure and has good on-press developability, high sensitivity, and A lithographic printing plate having high printing durability is provided. A lithographic printing plate having a support, a hydrophilic layer, and a heat-sensitive layer thereon, wherein the hydrophilic layer contains a heat-reactive compound, and the heat-sensitive layer comprises a reaction of the heat-reactive compound. A lithographic printing plate containing a partner compound. |