C - Chemistry – Metallurgy – 09 – B
Patent
C - Chemistry, Metallurgy
09
B
96/134, 260/299
C09B 57/00 (2006.01) G03C 1/06 (2006.01) G03C 7/38 (2006.01) G03C 7/384 (2006.01) G03C 11/04 (2006.01)
Patent
CA 2029578
PHOTOGRAPHIC MATERIAL AND PROCESS FOR RETOUCHING DYE IMAGES Abstract A method of retouching a dye image comprises selective removal with an aqueous acidic organic solvent solution of a portion of a dye image from an exposed and processed photographic silver halide element comprising a support bearing a dye image from a dye-forming coupler and a primary amine photographic color developing agent, wherein the dye-forming coupler: (a) contains no ionizable group that is retained as part of a dye formed upon oxidative coupling, (b) has a structure such that the Log P of the coupler is greater than 4 and is derived from a four-equivalent coupler that has a Log P less than 8, and (c) hag a coupling reactivity that enables formation of maximum image density of at least 0.5. The method comprises the step of contacting the dye image with an aqueous acidic organic solvent solution for a time and at a temperature sufficient to selectively dissolve and remove a portion of the dye image from the photographic element. A new photographic element designed for such retouching comprises new pyrazolotriazole couplers.
Burns Paul A.
Harder John W.
Burns Paul A.
Eastman Kodak Company
Gowling Lafleur Henderson Llp
Harder John W.
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