Photothermographic compositions, element and process

Details Photothermographic compositions, element and process Photothermographic compositions, element and process

G - Physics

03

C

96/24, 96/99

G03C 1/08 (2006.01) G03C 1/498 (2006.01)

Patent

CA 1039553

PHOTOTHERMOGRAPHIC COMPOSITION, ELEMENT AND PROCESS Abstract of the Disclosure Improved sensitivity to certain wavelengths of light and improved contrast are provided by certain photo- thermographic compositions containing a sensitizing con- centration of a non-silver iodide salt. Such photothermo- graphic compositions, prepared by (A) preparing a dispersion of (a) an oxidation-reduction image-forming combination comprising (i) a silver salt oxidizing agent and (ii) an organic reducing agent, with (b) ex situ, synthetic polymer-peptized photosensitive silver halide, (c) a cyclic imide toner in (d) a non-gelatin polymeric binder, contain a sensitizing concentration of a non-silver iodide salt, such as lithium iodide. The described non-silver iodide salt can be mixed with described photothermographic compositions at different stages of preparation of the compositions. - 1 -

215566

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