Gas separation: apparatus – Solid sorbent apparatus – With control means responsive to sensed condition
Patent
1977-06-27
1979-02-06
Brown, J. Travis
Gas separation: apparatus
Solid sorbent apparatus
With control means responsive to sensed condition
96 48HD, 96 66T, 96109, G03C 102, G03C 524, G03C 530, G03C 134
Patent
active
041382650
ABSTRACT:
A photographic material, especially a photothermographic material, for producing a dye-enhanced silver image comprising, in reactive association, (a) photosensitive silver halide, (b) an image-forming combination comprising (i) a silver salt of a certain 3-amino-1,2,4-mercaptotriazole derivative with (ii) a phenylenediamine or aminophenol silver halide developing agent, (c) a compound that contains a coupling moiety and which forms a dye upon reaction with the oxidized form of the developing agent, such as upon heating the element to a temperature above about 80.degree. C., (d) a binder, and (e) an antifoggant concentration of a thiazoline thione antifoggant, provides developed dye-enhanced silver images without the need for processing solutions or baths and provides reduced fog upon processing. An image can be developed in this material by merely heating the material to moderately elevated temperatures. Other addenda employed in heat developable photographic materials, such as sensitizing dyes, can be employed with the photographic materials described.
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Research Disclosure 4/74, p. 36, #12044, Offedahl-Color Photothermographic Material.
Research Disclosure, 6/77, p. 80, #15869 - Knight et al.
Brown J. Travis
Eastman Kodak Company
Falasco L.
Knapp Richard E.
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