Silver halide photographic emulsion and photographic light-sensitive material using the same
AssigneeFuji Photo Film Co., Ltd.
InventorsKatsuhiro Yamashita, Katsumi Kobayashi, Takanori Hioki
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Abstract
An object of the present invention is to provide a silver halide photographic light-sensitive material which is reduced in the various problems ascribable to the multilayer adsorption of a sensitizing dye. A silver halide photographic emulsion comprising a silver halide grain having adsorbed on the surface thereof a sensitizing dye in multiple layers is described, wherein the variation coefficient of the light absorption strength distribution among the grains is 100% or less.
Claims23
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A method for reducing a decrease in photographic image quality comprising
- providing a silver halide photographic emulsion comprising silver halide rains having adsorbed on the surface thereof multiple layers of at least one a sensitizing dye, wherein when the optical density attributable to the sensitizing dye at a spectral absorption maximum wavelength before photographic processing is G0 and the optical density attributable to the sensitizing dye at a spectral absorption maximum wavelength after photographic processing is G1, A represented by A=G1/G0 is 0.9 or less,
- wherein an A value of 0.9 or less is obtained by:
- (1) designing the sensitizing dye so that it has a structure which can provide an A value of 0.9 or less,
- (2) adding a water-soluble stilbene compound, a non-ionic surfactant or a mixture of both to a developer used to develop the emulsion,
- (3) treating a photographic element comprising the emulsion with an oxidizing agent to destroy the dye after bleaching and fixing,
- (4) bleaching the emulsion with a persulfate bleaching bath,
- (5) decolorizing the dye, or
- (6) destroying association of the sensitizing dye to thereby obtain decolorization.
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Dependencies are inferred from the claim text.