Reduced fog in photographic coatings containing a monosubstituted quinone
AssigneeEastman Kodak Company
InventorsJanet N. Younathan, Daniel L. Kapp, Stephen P. Singer, David R. Foster
Life of this patent
Estimating the term…
Abstract
Disclosed is a photographic element comprising a light-sensitive silver halide emulsion layer containing an azopyrazolone masking coupler and a monosubstituted quinone of formula I: wherein R is selected from the group consisting of alkyl, aryl, alkoxy, aryloxy, alkylthio, arylthio, sulfinyl, sulfonyl,sulfamoyl, halogen, cyano, thiol, hydroxy, nitro, acyloxy, sulfonyloxy, heterocyclic, carboxylic acid, carboxylate, carbamoyl, amino, carbonamido and sulfonamido groups.
Claims20
A photographic element comprising a light-sensitive silver halide emulsion layer containing an azopyrazolone masking coupler and a monosubstituted quinone of formula I:
- wherein R is selected from the group consisting of alkyl, aryl, alkoxy, aryloxy, alkylthio, arylthio, sulfinyl, sulfonyl, sulfamoyl, halogen, cyano, thiol, hydroxy, nitro, acyloxy, sulfonyloxy, heterocyclic, carboxylic acid, carboxylate, carbamoyl, amino, carbonamido and sulfonamido groups.
Dependencies are inferred from the claim text.