| 摘要 |
PURPOSE:To obtain excellent durability to repeated printing without using organic solvents, by providing an intermediate layer by using a coating liquid comprising a dispersed liquid of a vinylidene chloride-vinyl chloride copolymer, a water-soluble amino resin and an inorganic pigment. CONSTITUTION:The planographic plate material comprises an image-receiving layer laminated on a heat-resistant base through an intermediate layer. The base may be a wet strength paper, a plastic film, a synthetic paper or a material obtained by treating such paper or film make it conductive. The image-receiving layer comprises a photoconductive powder in an insulating resin in the case of a photoconductive layer, or comprises a pigment in an appropriate resin in the case of a non-photoconductive layer. The O/W type dispersed liquid of the vinylidene chloride-vinyl chloride copolymer used for the intermediate layer has a vinylidene chloride content of not less than 60%. The water-soluble amino resin is, for example, a water-soluble melamine resin or a water-soluble urea resin. The inorganic pigment used in the intermediate layer, which functions to enhance adhesion and enhance image quality through reducing unevenness of the base, is preferably kaolin clay or the like. |
