| 摘要 |
PROBLEM TO BE SOLVED: To provide a heat mode type original film for lithographic printing which necessitates no developing processing, has high sensitivity and a wide latitude of exposure and makes it easy to make a plate and which can be mounted also directly on a printing press, has an excellent printing wear, in addition, and also brings about little printing stain on a printing surface. SOLUTION: The original film for lithographic printing has a heating layer provided as a lower layer on a substrate and further a hydrophilic photosensitive layer provided as an upper layer and containing metal particulates having properties of photothermal conversion which turn hydrophobic as light is converted into heat. |
