US 4,478,927 A · Heat-developable color photographic materials

Abstract

A heat-developable color photographic material is disclosed. The material is comprised of a support having thereon a layer containing at least a light-sensitive silver halide and the photographic material containing an organic silver salt, a binder, a dye releasing activator and a dye releasing redox compound which releases a diffusible dye. The improvement comprises a support capable of receiving a released dye or a support having thereon a layer composed of an organic high molecular weight compound capable of receiving a released dye. The heat-developable color photographic material can easily provide a clear and stable color image by imagewise exposure to light and heat development procedure. A method of forming a color image using the heat-developable color photographic material is also disclosed.

Claims26

Dependent claims

A heat developable color photographic material, comprising:

a support having a surface;
a light-sensitive layer on the surface, the layer being comprised of:
a light-sensitive silver halide;
an organic silver salt;
a binder;
a dye releasing redox compound which is immobilized in said binder, and which releases a diffusible dye represented by the general formula:
R--SO.sub.2 --D (I)
wherein R represents a reducing group capable of being oxidized by the organic silver salt;
and D represents a dye portion for forming an image which does not contain a carboxylic acid group or a sulfonic acid group;
and
wherein the support is characterized by its ability to receive a released dye.

8 more elements

A heat-developable color photographic material, comprising

a support having a surface;
a first layer on the surface comprised of an organic high molecular weight compound which characterized by its ability to receive a released dye;
a light-sensitive layer on the first layer, the light sensitive layer comprising:
a light-sensitive silver halide;
an organic silver salt compound;
a binder;
a dye releasing activator;
and
a dye releasing redox compound which is immobilized in said binder, and which released a diffusible dye,
wherein the dye releasing redox compound is represented by the following formula:
R--SO.sub.2 --D (I)
wherein R represents a reducing group capable of being oxidized by the organic silver salt;
and D represents a dye portion for forming an image which does not contain a carboxylic acid group or a sulfonic acid group.

10 more elements

Dependencies are inferred from the claim text.

Heat-developable color photographic materials

Life of this patent

Heat-developable color photographic materials

Life of this patent

Abstract

Claims26