Photothermographic element, composition and process for producin

Details Photothermographic element, composition and process for producin Photothermographic element, composition and process for producin

1976-01-19

1977-05-10

Klein, David

Gas separation: apparatus

Electric field separation apparatus

Electrode cleaner, apparatus part flusher, discharger, or...

96 54, 96 55, 96 77, 96100, 961141, G03C 554, G03C 700, G03C 140, G03C 102

Patent

active

040226174

ABSTRACT:
A photothermographic element and composition for providing a dye image comprises (a) photographic silver halide in association with (b) an oxidation-reduction image-forming combination comprising (i) a silver salt oxidizing agent, with (ii) an organic reducing agent, (c) a polymeric binder for the element or composition and (d) a leuco-base dye which is oxidizable to form a dye image. After imagewise exposure of a photothermographic element or composition containing the described combination, a color image can be developed by overall heating the photothermographic element. Negative or positive dye images can be provided. The dye image can be transferred to an image receiver.

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patent: 3409457 (1968-11-01), Menzel
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patent: 3592650 (1971-07-01), De Selms
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patent: 3785830 (1974-01-01), Sullivan et al.
patent: 3801321 (1974-04-01), Evans et al.
patent: 3985565 (1976-10-01), Gabrielsen et al.
"Photothermographic Element . . . Image", Gabrielsen et al., Research Disclosure No. 14347 Mar., 1976, pp. 32-35.
"Photothermographic Element . . . Image", McGuckin, Research Disclosure No. 13443 June, 1975, pp. 41-44.
Allen; R. L. M., Color Chemistry Appleton-Century-Crafts, New York c. 1971, pp. 103-117.

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