Color photothermographic elements comprising phenolic thermal solvents
AssigneeEastman Kodak Company
InventorsXiqiang Yang, Zbyslaw R. Owczarczyk, David T. Southby, Mark E. Irving, Paul B. Merkel, Lyn M. Irving, David H. Levy
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Abstract
A color photothermographic element comprising at least three light-sensitive units which have their individual sensitivities in different wavelength regions, each of the units comprising at least one light-sensitive silver-halide emulsion, binder, and dye-providing coupler, and a blocked developer in the presence of a thermal solvent represented by the following structure: wherein the groups are as defined in the specification to promote the thermal development of the photothermographic element.
Claims31
A method of image formation comprising the following steps of
- (a) developing an imagewise exposed photothermographic film by heating the film to a temperature within the range of about 80 to 180° C., said film being a photothermographic element comprising at least three light-sensitive units which have their individual sensitivities in different wavelength regions, each of the units comprising at least one light-sensitive silver-halide emulsion, binder, dye-providing coupler, and a blocked developer which blocked developer and coupler are developed, thereby forming a developed image within each of the units, in the presence of a thermal solvent for promoting development in a dry or substantially dry process, which thermal solvent has a melting point of at least 80° C., comprises a phenolic ring and has the following formula:
- wherein the substituent B is independently selected from a substituent where an oxygen, carbon, nitrogen phosphorus or sulfur atom is linked to the phenolic ring as part of an ester, amido, ether, aminosulfonyl, sulfamoyl, carbonyl, acyl or sulfonyl group;
- m is 0 to 4;
- and
- wherein the substituent R is independently selected from a substituted or unsubstituted alkyl, cycloalkyl, aryl, alkylaryl, or forms a ring with another substituent on the ring;
- n is 0 to 4;
- and
- wherein m+n is 1 to 5;
- and
- (b) scanning said developed image in the imagewise exposed and developed film to form a first electronic image representation of said imagewise exposure.
A method of image formation comprising the following steps:
- (a) developing an imagewise exposed photothermographic film by heating the film to a temperature within the range of about 80 to 180° C., said film being a photothermographic element comprising at least three light-sensitive units which have their individual sensitivities in different wavelength regions, each of the units comprising at least one light-sensitive silver-halide emulsion, binder, and dye-providing coupler, and a blocked developer which blocked developer and coupler are developed, thereby forming a developed image within each of the units, in the presence of a thermal solvent for promoting development in a dry or substantially dry process, which thermal solvent has a melting point of at least 80° C., comprises a phenolic ring and has the following formula:
- wherein the substituent B is independently selected from a substituent where an oxygen, carbon, nitrogen, phosphorus or sulfur atom is linked to the phenolic ring as part of a ketone, aldehyde, ester, amido, carbamate, ether, aminosulfonyl, sulfamoyl, sulfonyl, amine, phosphine, or aromatic heterocyclic group;
- m is 0 to 4;
- and
- wherein the substituent R is independently selected from a substituted or unsubstituted alkyl, cycloalkyl, aryl, alkylaryl, or forms a ring with another substituent on the ring;
- n is 0 to 4;
- and
- wherein m+n is 1 to 5;
- and
- (b) scanning said developed image in the imagewise exposed and developed film to form a first electronic image representation of said imagewise exposure.
Dependencies are inferred from the claim text.