| 摘要 |
PURPOSE:To improve the increase of a fog with age and the deterioration of sensitivity and graininess by composing a silver halide particle which is contained in at least one layer of emulsion layers and is subjected to a chemical sensitization of a specified tabular silver halide particle. CONSTITUTION:The photosensitive material comprises each of a blue, a green and a red sensitive silver halide emulsion layers, and at least one layer of the emulsion layers is composed of two or more layers having different sensitivities with each other. In this case, the tabular silver halide particle which has a projected area equivalent diameter of >=0.4mum and a mean aspect ratio of >=2, occupies >=50% of the projected area of the total silver halide particle contd. in the emulsion layer. The silver halide particle has a layer structure which is divided with a substantially parallel surface against two countering main surfaces, and is composed of the tabular silver halide particle in which the main iodide content contd. in the outermost layer of the particle is higher than the mean iodide content of the total silver halide particle by >=1mol.%. Thus, the increase of the fog with age, and the deterioration of the graininess and the sensitivity of the photosensitive material are improved. |
