Photothermographic material comprising an infra-red sensitizer

Details Photothermographic material comprising an infra-red sensitizer Photothermographic material comprising an infra-red sensitizer

1997-07-08

2000-06-13

Chea, Thorl

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Silver compound sensitizer containing

430510, 430531, 430572, 430584, 430592, 430611, 430613, G03C 1490

Patent

active

060748141

ABSTRACT:
A photothermographic recording material comprising a photo-addressable thermally developable element including a substantially light-insensitive organic silver salt, photosensitive silver halide in catalytic association with the substantially light-insensitive organic silver salt, in a quantity of 0.1 to 35 mol % relative to the organic silver salt and spectrally sensitized to infra-red light with a dye, a supersensitizer for the dye, a reducing agent in thermal working relationship with the substantially light-insensitive organic silver salt and a binder, wherein the binder comprises a water soluble polymer, a water-dispersible polymer or a water soluble polymer and a water-dispersible polymer and the dye is represented by formula (I): ##STR1## wherein Z.sup.1 and Z.sup.2 independently represent S, O or Se; R.sup.1 and R.sup.17 are independently each an alkyl or sulfo-alkyl group which may be substituted with at least one fluorine, chlorine, bromine, iodine or an alkoxy-, aryloxy- or ester-group; and X represents an anion.

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J.A. Verdone, "Polymeric Binders for Photothermographic Materials" Research Disclosure, No. 186, Oct. 1979, Havant GB.
English Translation of JP 63 023 145 Fuji Photo Film KK Jan. 1988.
English Translation of JP 58 028 737 Konishiroku Photo KK Feb. 1983.
English Translation of JP 61 193 142 Kuraray KK Aug. 1986.

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