| 摘要 |
PURPOSE:To obtain the material for a damping waterless planographic printing plate which decreases the fatigue of a developing soln. and with which the printing plate having a wide development latitude, excellent printing resistance and good reproducibility without having scumming is obtainable by incorporating resin components which are three-dimensionally crosslinked with each other into a photosensitive layer. CONSTITUTION:The damping waterless planographic printing plate is constituted by successively providing a photosensitive layer and a fluoroplastic layer on a base. Since the photosensitive layer contains the resin components which are three- dimensionally crosslinked with each other, the layer forms the bonds which are secure with each other. The insolubility in the developing soln. is thereby imparted to the photosensitive layer and the fatigue of the developing soln. is eventually decreased. Development by using solvents except, for example, a fluorine system as the developing soln. is possible. In addition, the development latitude when the development is made is widened. Further, the printing plate obtd. from this plate material has excellent plate wear and the excellent reproducibility of shadow parts and small dots without generating the scumming of the plate surface. |
