Heat developable color photographic materials with redox dye releasers
AssigneeFuji Photo Film Co., Ltd.
InventorsHideki Naito, Hiroshi Hara, Kozo Sato
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Abstract
A diffusion transfer heat-developable color photographic material. The material comprises a support, a photosensitive silver halide, an organic silver salt, a hydrophobic binder, a dye releasing activator, and a dye releasing redox compound which releases a diffusible dye. Color images are obtained with the material by transferring a dye released by heat development. The material makes it possible to obtain clear color images by a simple procedure and the images obtained are stable over a long period of time.
Claims15
A diffusion transfer heat-developable color photographic material comprising a support having coated thereon at least a photosensitive silver halide, an organic silver salt, a hydrophobic binder, a dye releasing activator and a dye releasing redox compound which can reduce the organic silver salt and/or silver halide and release a diffusible dye represented by the following general formula (I):
- R--SO.sub.2 --D (I)
- wherein R represents a reducing group capable of being oxidized by the organic silver salt and/or silver halide and wherein R has a hydrophilic group, and D represents an image forming dye part and does not have a carboxyl group or a sulfo group.
A process for forming a color image which comprises heating a diffusion transfer heat-developable color photographic material, wherein said color photographic material comprises a support having coated thereon at least a photosensitive silver halide, an organic silver salt, a hydrophobic binder, a dye releasing activator and a dye releasing redox compound which can reduce the organic silver salt and/or silver halide and release a diffusible dye represented by the following general formula (I):
- R--SO.sub.2 --D (I)
- wherein R represents a reducing group capable of being oxidized by the organic silver salt and/or silver halide and wherein R has a hydrophilic group, and D represents an image forming dye part and does not have a carboxylic group or a sulfo group, after the exposure of said color photographic material to light to imagewise release the diffusible dye, to transfer the diffusible dye by said heating, and thereafter fixing said diffusible dye on an image receiving material.
Dependencies are inferred from the claim text.