Silver halide color photosensitive material
A technology for photosensitive materials and color photography, which is applied in the fields of photosensitive materials, optics, and color reduction processing technology, and can solve the problems of insufficient fog stability, sensitivity stability, etc.
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Embodiment 1
[0221]
[0222] [Preparation of Tabular Silver Halide Emulsion Em-1]
[0223] Tabular silver halide emulsion Em-1 was prepared by the following procedure using the silver halide emulsion production facility shown in FIG. 1 described in JP-A-2001-201811.
[0224] [nucleation process]
[0225] In the reaction vessel, the following reaction mother liquid (Gr-1) was kept at 30°C, using a mixing and stirring device described in JP-A No. 62-160128, stirring at a stirring speed of 400 rpm, using 1 mol / L of sulfuric acid, adjust the pH to 1.96. Next, the following (S-1) solution and the following (H-1) solution were added at a constant flow rate for 1 minute by the controllable double-nozzle method to form nuclei.
[0226] (Gr-1)
[0227] Oxidized low molecular weight gelatin (average molecular weight 20,000) 40.5g
[0228] Potassium bromide 12.4g
[0229] Fill up to 16.2L with distilled water
[0230] (S-1)
[0231] Silver nitrate 862.5g
[0232] Add to 4.06L with distille...
Embodiment 2
[0540] According to the method implemented in Example 1, except that tabular silver halide emulsions Em-1 to Em-7 were used as silver halide emulsions for the high-sensitivity red color-sensitive layer of the fifth layer, the rest was carried out in the same manner as in Example 1. Each silver halide color photographic photosensitive material was prepared by the method, and the relative sensitivity of the cyan image, graininess performance, radiation fog resistance and humidity dependence during exposure were evaluated. The characteristics of any of the samples of the present invention were excellent.
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