| 摘要 |
PURPOSE:To improve the position operativity of an original image and to prevent the image from defects, by making a photosensitive resin plate material and a protecting material in one body by sticking them together and by arranging so that a film remains on the surface of a plate material when the protecting material is peeled off. CONSTITUTION:A photosensitive resin plate material of a solvent development type contg. alcohol or water on the tacky surface of a photosensitive layer and a protecting material on which a non-tacky, alcohol or water soluble or swelling transparent or semitransparent film is formed on the surface of a sheetlike or a filmlike main body through a silicone mold releasing layer, are combined to obtain a printing plate material. The resin plate material and the protecting material are stuck onto the surface of the photosensitive layer of the resin plate material as a protecting coating film and are made in one body, and it is arranged so that the film remains on the surface of the plate material when the protecting material is peeled. As the main body of the protecting material, sheetlike or filmlike plastics which are treated by chemical or physical abrasion are are preferably applied. |
