| 摘要 |
PROBLEM TO BE SOLVED: To provide a producing method of a lithographic printing plate in which printing durability and sharpness of an image on the plate are improved and a silver complex salt diffusion transfer method is used. SOLUTION: In the production of the lithographic printing plate, at least a silver halide emulsion layer is applied and dried on a support, and then a physical developing nuclei layer is applied on the silver halide emulsion layer, and a silver complex salt diffusion transfer method is used. In this method, the surface temp. of the silver halide emulsion layer is controlled to <=15 deg.C when the physical developing nuclei layer is applied. More preferably, the surface temp. of the silver halide emulsion layer is controlled to <=10 deg.C in the production of the lithographic printing plate above described. |
