| 摘要 |
PURPOSE:To obtain a clear image in developing processing in a short time by providing a moisture-proof layer having a moisture permeability defined by JIS-Z-0208 of 100-500g/m<2>/24hr on the rear surface of a paper supporting body composed of a base paper which mounts a photosensitive layer thereon. CONSTITUTION:The title body has the moisture permeability defined by JIS-Z-0208 of 100-500g/m<2>/24hr on the rear surface of the paper supporting body which mounts the photosensitive layer thereon. The paper supporting body is constituted of the moisture-proof layer mounted on the base paper, and said layer comprises a film forming polymer and an org. and/or an inorg. pigments. The titled material makes it possible to form smoothly an image, effectively preventing the evaporation of a moisture contd. in the title material from the rear surface of the paper supporting body at the time of a thermal development. Namely, the moisture evaporated in a form of a water vapor by the thermal development takes part in the polymerization reaction in the part formed a latent image of a silver halide, whereby the development is further promoted, and the development processing is possible for a short period. While, the generation of a spot-like bubble appearing in the image is also prevented, thereby obtaining the clear image. |
