Color photographic element with improved resistance to thermal and photochemical yellowing
AssigneeEastman Kodak Company
InventorsKrishnan Chari, Wendell F. Smith, Sundaram Krishnamurthy
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Abstract
Yellowing of a processed photographic element is inhibited by incorporating a scavenger compound capable of reacting with magenta coupler, e.g. an epoxy compound, in a layer adjacent a layer containing the magenta coupler. At least one of these layers contains a solubilizing agent for the scavenger compound. In preferred embodiments, the processing solution used to process the photographic element contains an external solubilizing agent for the scavenger compound, preferably benzyl alcohol.
Claims9
A multilayer color photographic element comprising a support having coated thereon:
- (a) a first layer comprising
- (i) a silver halide emulsion and
- (ii) a magenta coupler dispersed therein;
- and
- (b) a second layer comprising a scavenger compound capable of reacting with the magenta coupler to produce a product which is resistant to yellowing;
- wherein at least one of said layers contains a pH dependent solubilizing agent capable of dissolving the scavenger compound at a pH above about 8, but not at lower pH values;
- and wherein said first layer is adjacent said second layer.
A method of improving the resistance to yellowing of a color photographic element after processing, which method comprises
- (A) exposing a photographic element to light to produce a desired latent image thereon, said element comprising a support having coated thereon:
- (a) a first layer comprising
- i) an aqueous silver halide emulsion and
- ii) a magenta coupler dispersed therein, and
- (b) a second layer which comprises a scavenger compound capable of reacting with the magenta coupler to produce a product which is resistant to yellowing;
- wherein at least one of said layers contains a pH dependent solubilizing agent for the scavenger compound capable of solubilizing the scavenger compound at a pH above about 8, but not at lower pH values;
- and wherein said first layer is adjacent said second layer;
- and
- (B) processing the element after exposure with a developer solution having a pH above about 8.
Dependencies are inferred from the claim text.