Direct positive silver halide color photographic light-sensitive

Details Direct positive silver halide color photographic light-sensitive Direct positive silver halide color photographic light-sensitive

1994-07-22

1996-02-20

Chea, Thorl

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

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

430503, 430509, 430510, 430598, 430596, 430940, G03C 1485, G03C 100

Patent

active

054927978

ABSTRACT:
Disclosed is a direct positive silver halide color photographic light-sensitive material comprising a support and provided thereon, a blue-sensitive emulsion layer containing previously unfogged internal latent image-forming silver halide grains having a spectral sensitivity to blue-light, a green-sensitive emulsion layer containing previously unfogged internal latent image-forming silver halide grains having a spectral sensitivity to green-light, a red-sensitive emulsion layer containing previously unfogged internal latent image-forming silver halide grains having a spectral sensitivity to red-light and a hydrophilic colloidal layer, wherein said blue-sensitive emulsion layer is provided so as to be located farther than both said green-sensitive and said red-sensitive emulsion layers from the support; and at least one of said blue-sensitive emulsion layer, said-green sensitive emulsion layer and said red-sensitive emulsion layer or said hydrophilic colloidal layer contains an internal latent image forming silver halide grains having a spectral sensitivity having a part common to the respective spectral sensitivity regions pertaining to said blue-sensitive emulsion layer, said green-sensitive emulsion layer and said red-sensitive emulsion layer; and said spectral sensitivity of said blue-sensitive emulsion layer to said blue-light, is not less than 0.8 of at least one selected from a spectral sensitivity of said green-sensitive emulsion layer to said blue-light or a spectral sensitivity of said red-sensitive emulsion layer to blue-light.

REFERENCES:
patent: 3620747 (1971-11-01), Hamlin
patent: 4772542 (1988-09-01), Haga
patent: 4948712 (1990-08-01), Inoue et al.
patent: 4970140 (1990-11-01), Heki et al.
Patent Abstracts of Japan, Vol. 14, No. 405; Aug. 31, 1990 JPA-2-157,751.
Patent Abstracts of Japan, vol. 17, No. 179; Apr. 7, 1993 JPA-4-333,839.

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