O-sulfonamidonaphthol diffusible dye image providing compounds
AssigneeEastman Kodak Company
InventorLee J. Fleckenstein
Life of this patent
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Abstract
Color photographic elements, diffusion transfer film units and processes are described which employ nondiffusible o-sulfonamidonaphthols which are alkali-cleavable upon oxidation to release a diffusible color-providing moiety.
Claims21
A photographic element comprising a support having thereon at least one photosensitive silver halide emulsion layer having associated therewith a nondiffusible o-sulfonamidonaphthol compound having a diffusible color-providing moiety attached through the sulfonamido group of said compound to the naphthalene moiety of said compound, said naphthalene moiety having a ballast radical of such molecular size and configuration as to render said compound nondiffusible during development in an alkaline processing composition.
A photographic element comprising a support having thereon at least one photosensitive silver halide emulsion layer having associated therewith a nondiffusible sulfonamidonaphthol compound which is alkali-cleavable upon oxidation to release a diffusible color-providing moiety from the benzene nucleus, said compound having the formula:
- ##STR5## wherein:
- A. Col is a dye or dye precursor moiety;
- B. ballast is an organic ballasting radical of such molecular size and configuration as to render said compound nondiffusible during development in an alkaline processing composition;
- C. r is hydrogen or an alkali labile group;
- D. g represents an aromatic ring directly fused to the benzene nucleus to form a naphthalene nucleus;
- and
- E. n and m are dissimilar positive integers of 1 to 2.
A photographic film unit comprising:
- A. a photographic element comprising a support having thereon at least one photosensitive silver halide emulsion layer having associated therewith a nondiffusible o-sulfonamidonaphthol compound having a diffusible color-providing moiety attached through the sulfonamido group of said compound to the naphthalene moiety of said compound, said naphthalene moiety having a ballast radical of such molecular size and configuration as to render said compound nondiffusible during development in an alkaline processing composition;
- B. a dye image-receiving layer;
- and
- C. means for discharging an alkaline processing composition within said film unit;
- said film unit containing a silver halide developing agent.
A photographic film unit comprising:
- A. a photographic element comprising a support having thereon at least one photosensitive silver halide emulsion layer having associated therewith a nondiffusible sulfonamidonaphthol compound which is alkali-cleavable upon oxidation to release a diffusible color-providing moiety from the benzene nucleus, said compound having the formula:
- ##STR6## wherein:
- a. Col is a dye or dye precursor moiety;
- b. Ballast is an organic ballasting radical of such molecular size and configuration as to render said compound nondiffusible during development in an alkaline processing composition;
- c. R is hydrogen or an alkali labile group;
- d. G represents an aromatic ring directly fused to the benzene nucleus to form a naphthalene nucleus;
- and
- e. n and m are dissimilar positive integers of 1 to 2;
- B. a dye image-receiving layer;
- and
- C. means for discharging an alkaline processing composition within said film unit;
- said film unit containing a silver halide developing agent.
A process for producing a photographic transfer image in color comprising:
- A. imagewise-exposing a photographic element comprising a support having thereon at least one photosensitive silver halide emulsion layer having associated therewith a nondiffusible o-sulfonamidonaphthol compound having a diffusible color-providing moiety attached through the sulfonamido group of said compound to the naphthalene moiety of said compound, said naphthalene moiety having a ballast radical of such molecular size and configuration as to render said compound nondiffusible during development in an alkaline processing composition;
- B. treating said element with an alkaline processing composition in the presence of a silver halide developing agent to effect development of each of said exposed silver halide emulsion layers, thereby oxidizing said developing agent;
- i. said oxidized developing agent thereby cross-oxidizing said sulfonamidonaphthol compound;
- and
- ii. said sulfonamidonaphthol compound then cleaving, thus forming an imagewise distribution of diffusible color-providing moiety as a function of said imagewise exposure of each of said silver halide emulsion layers;
- whereby at least a portion of said imagewise distribution of diffusible color-providing moiety diffuses to a dye image- receiving layer to provide an image.
A process for producing a photographic transfer image in color comprising:
- A. imagewise-exposing a photographic element comprising a support having thereon at least one photosensitive silver halide emulsion layer having associated therewith a nondiffusible sulfonamidonaphthol compound which is alkali-cleavable upon oxidation to release a diffusible color-providing moiety from the benzene nucleus, said compound having the formula:
- ##STR7## wherein:
- a. Col is a dye or dye precursor moiety;
- b. Ballast is an organic ballasting radical of such molecular size and configuration as to render said compound nondiffusible during development in an alkaline processing composition;
- c. R is hydrogen or an alkali labile group;
- d. G represents an aromatic ring directly fused to the benzene nucleus to form a naphthalene nucleus;
- and
- e. n and m are dissimilar positive integers of 1 to 2;
- B. treating said element with an alkaline processing composition in the presence of a silver halide developing agent to effect development of each of said exposed silver halide emulsion layers, thereby oxidizing said developing agent;
- C. said oxidized developing agent thereby cross-oxidizing said sulfonamidonaphthol compound;
- D. said sulfonamidonaphthol compound then cleaving, thus forming an imagewise distribution of diffusible dye or dye precursor as a function of said imagewise exposure of each of said silver halide emulsion layers;
- and
- E. at least a portion of said imagewise distributions of diffusible dye or dye precursor diffusing to a dye image-receiving layer to provide an image.
Dependencies are inferred from the claim text.