Photographic recording material for accelerated development
AssigneeEastman Kodak Company
InventorsNorma B. Platt, Drake M. Michno, David A. Steele, David T. Southby
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Abstract
A photographic recording material capable of accelerated development is described. The recording material comprises an image-forming coupler compound, a development inhibitor releasing compound and a compound capable of imagewise release of an electron transfer agent.
Claims8
A photographic recording material comprising a support and a photosensitive silver halide emulsion layer which has, in reactive association therewith,
- (a) an image dye-forming coupler compound,
- (b) a compound capable of imagewise release of an electron transfer agent upon reaction with oxidized primary amine color developing agent, and
- (c) a development inhibitor-releasing compound, wherein the compound capable of imagewise release of an electron transfer agent has the formula:
- ##STR45## wherein:
- COUP is a phenol, naphthol or pivalylacetanilide dye-forming coupler;
- L is a divalent quinonemethide or an intramolecular nucleophilic displacement linking group;
- and
- ETA is a releasable 1-aryl-3-pyrazolidinone electron transfer agent bonded to the nitrogen atom in the 2-position thereof to L.
A photographic recording material comprising a support and a photosensitive silver halide emulsion layer which has, in reactive association therewith,
- (a) an image dye-forming coupler compound,
- (b) a compound capable of imagewise release of an electron transfer agent upon reaction with oxidized primary amine color developing agent, and
- (c) a development inhibitor-releasing compound, wherein the compound capable of imagewise release of an electron transfer agent has the formula:
- ##STR46## wherein:
- COUP is a phenol, naphthol or pivalylacetanilide dye forming coupler;
- L is a divalent linking group having one of the following formulae:
- ##STR47## R.sup.2 and R.sup.3 are hydrogen or alkyl having from 1 to 3 carbon atoms or hydroxy methyl;
- R.sup.6 is hydrogen, methyl or methoxy;
- R.sup.8 is alkyl of from 1 to 3 carbon atoms;
- and
- m and p are each 0 or 1.
A photographic recording material comprising a support and a photosensitive silver halide emulsion layer which has, in reactive association therewith,
- (a) an image dye-forming coupler compound,
- (b) a compound capable of imagewise release of an electron transfer agent upon reaction with oxidized primary amine color developing agent, and
- (c) a development inhibitor-releasing compound, wherein the compound capable of imagewise release of an electron transfer agent has the formula:
- ##STR48## wherein:
- COUP is a phenol, naphthol or pivalylacetanilide dye-forming coupler;
- R.sup.2 is hydrogen or methyl;
- R.sup.3 is hydroxymethyl or as defined for R.sup.2 ;
- R.sup.8 is alkyl of from 1 to 3 carbons;
- and
- m and p are 0 or .
Dependencies are inferred from the claim text.