Photothermographic element and process

Details Photothermographic element and process Photothermographic element and process

1988-04-04

1989-08-15

Schilling, Richard L.

Radiation imagery chemistry: process, composition, or product th

Thermographic process

Heat applied before imaging

430619, 430620, G03C 106

Patent

active

048574392

ABSTRACT:
A method of making a photothermographic silver halide element comprises the combination of (I) adding an alkyl carboxylic acid containing 8 to 22 carbon atoms to a layer of the element comprising photosensitive silver halide and (II) after preparation of the layer comprising silver halide and before exposure of the element to light heating the element uniformly at a temperature and for a time sufficient to enable the photothermographic element to exhibit increased latent image stability upon imagewise exposure to light. The photothermographic element includes photosensitive silver halide and an oxidation-reduction image forming combination in a polmeric binder. A developed visible image is provided in such a photothermographic element after exposure to light by uniformly heating the exposed photothermographic element to moderately elevated temperatures.

REFERENCES:
patent: 3457075 (1969-07-01), Morgan et al.
patent: 3816132 (1974-06-01), Tukegawa et al.
patent: 3933508 (1976-01-01), Ohkubo et al.
patent: 4287295 (1981-09-01), Nonaka et al.
patent: 4332889 (1982-06-01), Siga et al.
patent: 4395484 (1983-07-01), McCarney
patent: 4459350 (1984-07-01), Przezdziecki
Research Disclosure No. 17029, Research Disclosure, vol. 170, 1978, Kenneth Mason Publications Ltd., Hampshire, England.

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