Silver halide multilayer color photographic material containing

Details Silver halide multilayer color photographic material containing Silver halide multilayer color photographic material containing

1987-02-24

1988-10-11

Michl, Paul R.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Two or more radiation-sensitive layers containing other than...

430503, 430505, 430506, 430509, G03C 146

Patent

active

047771224

ABSTRACT:
A high sensitivity multilayer color photographic material is disclosed. The material is comprised of a support base having coated thereon red-sensitive, green-sensitive and blue-sensitive silver halide emulsion layers associated with non-diffusing image-forming couplers. The red-sensitive silver halide emulsion layer comprises an upper, an intermediate and a lower silver halide emulsion layer, sensitive to visible light in the same or substantially the same spectral wavelength range, with the sensitivity of the layers decreasing in order from the upper layer to the lower layer. The green-sensitive silver halide emulsion layer comprises an upper and a lower silver halide emulsion layer, sensitive to visible light in about the same spectral wavelength range, with the sensitivity of the layers decreasing in order from the upper layer to the lower layer. The most sensitive red-sensitive silver halide emulsion layer is arranged between the less senitive and the more sensitive green-sensitive silver halide emulsion layers. The most sensitive red-sensitive silver halide emulsion layer comprises at least one non-diffusing cyan coupler and the more sensitive green-sensitive silver halide emulsion layer comprises at least one non-diffusing magenta coupler, relative coupling rates of said cyan and magenta couplers being higher than couplers forming the same color in the respective layers of lower same-wave-length sensitivity.

REFERENCES:
patent: 2640776 (1953-06-01), Spence et al.
patent: 3450536 (1969-06-01), Wyckoff
patent: 3843369 (1974-10-01), Kumai et al.
patent: 4370410 (1983-01-01), Iijima et al.

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