Radiation imagery chemistry: process – composition – or product th – Radiation sensitive product – Two or more radiation-sensitive layers containing other than...
Patent
1985-10-15
1987-07-21
Schilling, Richard L.
Radiation imagery chemistry: process, composition, or product th
Radiation sensitive product
Two or more radiation-sensitive layers containing other than...
430506, G03C 732
Patent
active
046818375
ABSTRACT:
A silver halide color photographic light-sensitive material comprising at least three silver halide emulsion layer units sensitive to blue, green and red light, respectively, at least one of the silver halide emulsion layer units having at least two layers which are different in sensitivity from each other and containing at least Coupler (A') described below and Coupler (B) described below, and one of said layers is in charge of color formation of the highest density portion in the characteristics curve of these layers and contains Coupler (B) described below which forms a dye having the maximum absorption wavelength different from a dye formed from Coupler (A) described below in an amount of at least 30 mol % of the total amount of the couplers included therein, wherein Coupler (A) denotes (i) a coupler which forms a dye having a maximum absorption in the wavelength range from 400 nm to less than (the maximum absorption wavelength of a dye formed from Coupler (A')+5) nm, when employed in a blue-sensitive layer unit, (ii) a coupler which forms a dye having the maximum absorption in the wavelength range from 510 nm to less than (the maximum absorption wavelength of a dye formed from Coupler (A')+5) nm, when employed in a green-sensitive layer unit, or (iii) a coupler which forms a dye having the maximum absorption in the wavelength range from more than (the maximum absorption wavelength of a dye formed from Coupler (A'-5) nm to 700 nm, when employed in a red-sensitive layer unit; Coupler (A') denotes a coupler which is employed in the largest amount by mol among the couplers contained in one or more layers other than the layer which is in charge of color formation of the highest density portion in a characteristic curve of the silver halide emulsion layer unit, or Coupler (B) denotes a coupler which forms a dye having the maximum absorption in the wavelength range other than that of a dye formed from Coupler (A).
The silver halide color photographic light-sensitive material is excellent in color reproducibility over a wide range from low density areas to high density areas and stability.
REFERENCES:
patent: 4170479 (1979-10-01), Usami
patent: 4564587 (1986-01-01), Watanabe et al.
patent: 4594314 (1986-06-01), Kimuta et al.
Mitsui Akio
Ohta Noboru
Fuji Photo Film Co. , Ltd.
Schilling Richard L.
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