| 摘要 |
PURPOSE:To prevent the staining of hands and clothing or the staining of an automatic developing machine by a dyeing liquid by incorporating a material which develops a color by reacting with the components in a processing liquid into a primer layer. CONSTITUTION:The material which develops the color by reacting with the component is the processing liquid is incorporated into the primer layer of the dampening-waterless planographic printing plate formed by successively laminating the primer layer, a photosensitive layer and an ink repulsive layer on a substrate. The color developing material to be incorporated into the primer layer is more preferably a photosensitive material and more preferably this photosensitive material causes a photochemical reaction by exposing, by which the material is decomposed or changed in properties and the capacity to develop the color by reacting with the components (couplers) in the photosensitive layer is lost without developing the color. The sharp images after the development are obtd. in this way and the staining of the hand, clothing and automatic developing machine by the dyeing liquid is prevented. |
