| 摘要 |
PROBLEM TO BE SOLVED: To obtain a printing plate material without requiring a developing process by eliminating an original image film by a method wherein a responsive resin composition is processed in a sheet shape, the responsive resin composition is irradiated with a light within a specific range to be cured and thereafter, an image having an irregularity is formed by irradiating the cured material with laser beams. SOLUTION: A responsive resin composition containing a photo-polymerization initiator such as ethylenically unsaturated monomer having only one piece of ethylenically unsaturated bond being crosslinkable with radical polymerization benzoin alkylether group or the like, is elongated to a polyetheylene tetraphthalate film or the like, which is put from above that with the polyethylene terephthalate film. Thereafter, a thickness is forced with a roll so as to obtain a specific thickness to be processed in a sheet shape. Then, the responsive resin composition is cured by irradiating that with light of 300 to 500, and an image having an irregularity is formed by irradiating the cured material with laser beams. |
