G - Physics – 03 – C
Patent
G - Physics
03
C
96/207, 96/33
G03C 8/08 (2006.01) G03C 8/00 (2006.01)
Patent
CA 1203105
Abstract of the Disclosure Photographic elements and assemblages are described employing positive-working redox dye- releasers, wherein the element contains an oxidant which is located between the support and the photo- sensitive portion thereof. The oxidant has an electrode potential of from about -200 mV up to about 1200 mV versus a saturated calomel electrode at a pH of about 5 to about 6. After processing, the oxidant reacts with the electron transfer agent to prevent it from reacting with the dye releaser which would otherwise cause further dye release. The reduced form of the oxidant is then substantially incapable of reducing the positive-working redox dye-releaser. Dmin stability is thereby improved.
435054
Armour Eugene A.
Munshi Jal F.
Eastman Kodak Company
Gowling Lafleur Henderson Llp
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