| 摘要 |
PURPOSE: To obtain such a photosensitive planographic printing plate that contamination in a non-picture part due to remaining films is not caused, contamination in the print due to finger prints or the like is prevented, deterioration in printing durability and chemical resistance due to poor adhesion with a photosensitive layer is not caused, dissolution of an aluminum supporting body by development is suppressed, the amt. of a replenisher for the development of many photosensitive planographic printing plates for a long period is decreased, and no insoluble precipitation is produced in the developer. CONSTITUTION: The photosensitive planographic printing plate is obtd. by subjecting an aluminum supporting body to graining and to anodic oxidation treatment, then treating the supporting body with a soln. containing an inclusion compd., and forming a photosensitive layer containing an o-quinone diazide compd. Or after an aluminum supporting body is subjected to graining and anodic oxidation treatment, a photosensitive compd. layer containing an o- quinone diazide compd. is formed on the one surface of the aluminum supporting body, and a coating layer containing an inclusion compd. is formed on the other surface. |
