Silver halide color photographic light-sensitive material
OwnerRyoji Nishimura, Yasushi Nozawainventors
Life of this patent
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Abstract
A silver halide color photographic light-sensitive material comprising, on a support, a unit blue-sensitive silver halide emulsion layer, unit green-sensitive silver halide emulsion layer, and unit red-sensitive silver halide emulsion layer, each of which includes not less than two color-sensitive layers differing in sensitivity, wherein tabular grains having an aspect ratio of not less than 5.0 account for not less than 60% of the total projected area of silver halide grains contained in an emulsion layer having the highest sensitivity in each unit color-sensitive layer, and a grain number indicated by specific equation is not more than 1.00.
Claims17
A silver halide color photographic light-sensitive material comprising, on a support, a unit blue-sensitive silver halide emulsion layer, unit green-sensitive silver halide emulsion layer, and unit red-sensitive silver halide emulsion layer, each of which includes not less than two color-sensitive layers differing in sensitivity, wherein tabular grains having an aspect ratio of not less than 5.0 account for not less than 60% of the total projected area of silver halide grains contained in an emulsion layer having the highest sensitivity in each unit color-sensitive layer, and a grain number indicated by equation (I) below is not more than 1.00:
- (Grain number)=AH/(Dc2×Th) (I)
- where
- AH:
- a silver coating amount (g/m2), as an amount of silver, of a silver halide contained in an emulsion layer having the highest sensitivity
- Dc:
- an average equivalent-circle diameter (μm) of silver halide grains contained in an emulsion layer having the highest sensitivity
- Th:
- an average thickness (μm) of silver halide grains contained in an emulsion layer having the highest sensitivity,
- if silver halide grains contained in said emulsion layer are a mixture of not less than two types of silver halide emulsion grains having different average equivalent-circle diameters, the grain number is calculated from AH, Dc, and Th of emulsion grains, of said not less than two types of emulsion grains, having the largest average equivalent-circle diameter.
Dependencies are inferred from the claim text.