| 摘要 |
PROBLEM TO BE SOLVED: To provide an original plate wherein a picture can be recorded with a high degree of sensitivity by using a heat or a heat generated by a photothermal conversion, and after recording the picture, a special treatment such as wet developing treatment or rubbing treatment is not required to directly make the original plate. SOLUTION: The original plate for lithography printing plate contains a substance or substances which absorb radiant rays to convert them into a heat, thereby starting a self-exothermic reaction, and a substance or substances which cause a chemical change or physical change by means of the reaction heat generated by the self-exothermic reaction thereof. In this case, the substance or substances which cause a self-exothermic reaction by means of a heat are metal powder or metallic compound powder. |
