Ionic liquids as coupler solvents in photothermographic systems
AssigneeEastman Kodak Company
InventorsLeif P. Olson, James H. Reynolds
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Abstract
This invention involves the use of ionic liquids as coupler solvents in a color or monochrome photothermographic system. The presence of an ionic liquid can increase the amount of density or dye formed. The ionic liquid may be combined with other coupler solvents.
Claims17
A silver-halide color or monochrome photothermographic light-sensitive element comprising a support and, on the support, at least one imaging layer comprising a silver-halide emulsion, wherein said imaging layer comprises a dye-forming coupler dispersed in droplets of a hydrophobic organic composition that comprises an ionic liquid material.
A method of forming a multicolor or monochrome image in a silver-halide photothermographic element, which comprises imagewise exposing the element to light, reacting an oxidized developing agent with a dye-forming coupler contained in dispersed droplets of a hydrophobic organic composition that comprises an effective amount of an ionic liquid material.
Dependencies are inferred from the claim text.