| 摘要 |
PURPOSE:To form easily a fading-preventing protective layer small in thickness and curling, by forming a colorless transparent UV shading layer being melted by heat and transferred to the surface of a photographic printing paper on a heat-resistant base, and using it for said layer. CONSTITUTION:A colorless transparent, UV shading thermoplastic resin layer B of 1-20mum thickness not melt-attaching to a base A but to a printing paper surface is formed on the film base A of 20-100mum thickness, smooth on the surface, or roughened, or surface-treated to make easily strippable, and having comparatively high heat-resistance, such as polyester, polycarbonate, or polyacrylate. This layer B is applied to the entitled photographic printing paper, and heat pressed from the side of the base A. Since the base A has a thickness easy to handle and proper strength, the base A can be stripped easily from the layer B serviceable as a protective film small in curling, and high in fading prevention effect, and it has been easily fused and transferred to the surface of a color copy formed by dying of a sublimable dye. |
