Photothermographic material comprising at least one dye absorbin

Details Photothermographic material comprising at least one dye absorbin Photothermographic material comprising at least one dye absorbin

1997-07-08

1998-12-22

Chea, Thorl

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Silver compound sensitizer containing

430350, 430572, 430573, 430944, G03C 1498, G03C 1494

Patent

active

058517553

ABSTRACT:
A photothermographic recording material comprising a photo-addressable thermally developable element containing a substantially light-insensitive organic silver salt, photosensitive silver halide in catalytic association with the substantially light-insensitive 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 includes a water soluble polymer, a water-dispersible polymer or a water soluble polymer and a water-dispersible polymer; the dye absorbs electromagnetic radiation in the wavelength range from 700 to 1100 nm; and the supersensitizer is a stilbene compound represented by general formula (I): ##STR1## wherein R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are independently hydrogen or alkyl, aryl, aralkyl, alkaryl, alkoxy or aryloxy groups; and R.sup.5, R.sup.6, R.sup.7, R.sup.8, R.sup.9, R.sup.10, R.sup.11 and R.sup.12 are independently hydrogen and alkyl, alkoxy, carboxy or sulfo groups; a production process therefor and a photothermographic recording process therewith.

REFERENCES:
patent: 4822726 (1989-04-01), Ikeda et al.
patent: 5424174 (1995-06-01), Motokatzu et al.
patent: 5424182 (1995-06-01), Matsunaga et al.
patent: 5541054 (1996-07-01), Miller et al.

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