| 摘要 |
PROBLEM TO BE SOLVED: To obtain the raw plate for the waterless lithographic printing plate superior in productivity by incorporating a quinonediazido compound and an diazonium compound in a photosensitive layer and hardening this layer through the photoreaction of the diazonium compound. SOLUTION: The raw plate of this printing plate is formed by laminating at least the photosensitive layer and a silicone rubber layer in this order on a support and this photosensitive layer has an cross-linking structure due to this diazonium compound and it is preferred to contain a binder polymer, and an effective quinonediazido compound is embodied by 1,2-naphthoquinone-2- diazido-4-sulfonic acid or its derivative, and it is preferred to contains it in an amount of 10-80weight% and, especially, 20-65weight% in the photosensitive layer, and as the diazonium compound, the condensation product of the diazo monomer, such as 4-diazodiphenylamine, with a condensing agent, and the like are used. |
