Photothermographic recording material comprising IR-sensitizing

Details Photothermographic recording material comprising IR-sensitizing Photothermographic recording material comprising IR-sensitizing

1997-07-08

1999-09-28

Chea, Thorl

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Silver compound sensitizer containing

430573, 430588, 430619, 430944, G03C 120, G03C 1498

Patent

active

059586672

ABSTRACT:
A photothermographic recording material comprising a support and a photo-addressable thermally developable element containing a substantially light-insensitive organic silver salt, a reducing agent therefor in thermal working relationship therewith, photosensitive silver halide spectrally sensitized to wavelengths >700 nm with a dye and in catalytic association with the substantially light-insensitive organic silver salt and a water-soluble binder, a water-dispersible binder or a mixture of a water-soluble and a water-dispersible binder, characterized in that the photothermographic recording material has an infra-red sensitivity of less than 80 J/m.sup.2 and the dye satisfies the following test: an exposure required by a photothermographic recording material A, consisting of a polyester 100 .mu.m thick support provided with a photo-addressable thermally developable element produced as described in the description and including the dye and a compound corresponding to the formula is >90% of an exposure required by a photothermographic recording material B produced as described for the photothermographic recording material A except that the compound is omitted, the exposure of the materials A and B being that required to obtain an optical density in an exposed part thereof 0.5 higher than in an non-exposed part thereof when exposed to infra-red light to which it is sensitive and heating with a heat source at 105.degree. C. for 15 s with the polyester support thereof in contact with the heat source; and a production process therefor.

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patent: 5541054 (1996-07-01), Miller et al.
P.W. Lauf, "Photothermographic Silver Halide Systems" Research Disclosure, No. 299, Mar. 1989, Havant GB.
J.A. Verdone, "Polymeric Binders for Photothermogrphic 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.

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