G - Physics – 03 – C
Patent
G - Physics
03
C
95/3, 96/34
G03C 1/40 (2006.01) G03C 5/50 (2006.01) G03C 8/12 (2006.01)
Patent
CA 1135107
Abstract of the Disclosure A method is disclosed of photographically pro- cessing a negative-working imagewise exposed silver halide photographic element to produce a reversal dye image comprising (a) developing the imagewise exposed silver halide with an electron transfer agent to produce oxidized electron transfer agent which reacts with a competing oxidizable substance and (b) developing silver halide remaining with the electron transfer agent in the presence of a dye image providing compound capable, after the competing oxidizable substance has been depleted, of reacting with the oxidized electron transfer agent to produce a reversal dye image. Image transfer film units are disclosed useful in the practice of this method. Such film units include those containing in addition to the competing oxidizable substance and initially immobile dye image providing compound a layer containing additional silver halide and a scavenger separating the additional silver halide from the immobile dye image providing compound.
343967
Marsden Peter D.
Morgan John
Eastman Kodak Company
Gowling Lafleur Henderson Llp
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