| 摘要 |
PURPOSE:To prevent peeling of a photosensitive layer liable to occur in developing and printing, by interposing an interlayer containing an epoxy resin between a substrate and the photosensitive layer in the titled printing plate made by forming a silicone rubber layer as a non-image element layer and a photosensitive layer as an underlayer. CONSTITUTION:A coating solution containing an epoxy resin is coated on a substrate (e.g., an aluminum plate) and heat-treated to form an interlayer of 0.5-30mu thickness made of a hardened resin coat film, and a 100mu or less thick photosensitive layer and a 0.5-50mu thick transparent silicone rubber layer are successively formed on the interlayer to provide a printing plate. As the above epoxy resin to be used for the interlayer, a reaction product between epichlorohydrin and a multivalent phenol, e.g., bisphenol A is preferable, and it may be used together with a phenolic resin, urea resin, melamine resin, or other thermosetting resin. |
