US 5,492,797 AGranted

Direct positive silver halide color photographic light-sensitive material

AssigneeKonica Corporation

InventorsYasuo Tosaka, Masayuki Sasagawa

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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.

Claims5

Dependent claims

A direct positive silver halide color photographic light-sensitive material comprising a support having 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 either
said blue-sensitive emulsion layer is farther from said support than each of said green-sensitive emulsion layer and said red-sensitive emulsion layer, and at least one of said blue-sensitive emulsion layer, said green-sensitive emulsion layer, and said red-sensitive emulsion layer contains internal latent image forming silver halide grains having a spectral sensitivity partially in common with the spectral sensitivity regions of each of said blue-sensitive emulsion layer, said green-sensitive emulsion layer, and said red-sensitive emulsion layer, or
said hydrophilic colloidal layer contains internal latent image forming silver halide grains having a spectral sensitivity partially in common with the spectral sensitivity regions of said blue-sensitive emulsion layer, said green-sensitive emulsion layer, and said red-sensitive emulsion layers;
said spectral sensitivity of said blue-sensitive emulsion layer to said blue light being not less than 0.8 of at least one of 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.

1 more element

Dependencies are inferred from the claim text.