| 摘要 |
PROBLEM TO BE SOLVED: To provide a heat mode type original film for a lithographic printing plate which can be set directly on a printer for making the plate after scanning exposure in a short time, without development, in a heat mode plate making system using laser exposure and, moreover, which is excellent in printing resistance, scarcely causes a printing stain on a printing surface and improves the properties of discrimination between an image part and a non-image part. SOLUTION: This original film for lithographic printing is formed by providing a hydrophobic thin layer on a base and by providing further a hydrophilic photosensitive layer containing a hydrophilic photothermal conversion agent, as an upper layer. |
