| 摘要 |
PURPOSE:To decrease the sensitization and desensitization by the pressure during development processing by incorporating an oil soluble coupler which forms a dye by coupling with the oxidant of an arom. primary amine color developing agent and is imparted with diffusion resistance and monodisperse silver halide particles into a photosensitive emulsion layer at the time of providing said emulsion layer on a base. CONSTITUTION:The polymer of an acrylamide system or methacrylamide system, polyester consisting of polyhydric alcohol and polybasic acid, and polyamide consisting of diamine and dibasic acid and W-amino-W'-carboxylic acid, etc., are incorporated into the photosensitive emulsion layer at the time of coating the base consisting of polyethylene laminated paper with the above-mentioned emulsion layer. The oil soluble coupler which is insoluble in water and is soluble in org. acid is incorporated into the emulsion layer in such a manner and further, the monodisperse silver halide particles are incorporated therein. |
