| 摘要 |
PURPOSE:To form an image having high density and high contrast by forming a precoat layer from a composition composed of an UV absorber, a filler and a vinyl acetate resin. CONSTITUTION:The precoat layer 2 is composed of the layer of the composition contg. the UV absorber, the filler and the vinyl acetate resin. The UV absorber is incorporated into the precoat layer 2 together with the combination of the filler such as silica and the vinyl acetate resin, thereby forming the diazo photo sensitive layer 3, without forming any tarry substance. The discoloration of an image part due to light is controlled, and the coloring of a back ground due to light is controlled, without substantially reducing sensitivity, etc., of the diazo photosensitive layer. |
