G - Physics – 03 – C
Patent
G - Physics
03
C
96/194, 96/84
G03C 1/40 (2006.01) G03C 5/40 (2006.01) G03C 7/26 (2006.01)
Patent
CA 1259515
-0- PHOTOGRAPHIC ELEMENTS AND PROCESSES UTILIZING IMAGEWISE REDUCTION OF FERRIC IONS Abstract of the Disclosure A process for obtaining highly stable color photographic images utilizes a silver halide photographic element comprising an essentially colorless, immobile compound which is capable of complexing with ferrous ions to form a dye. The complexing compound contains a complexing moiety which is represented by the formula: Image wherein m is zero or a positive integer 1 to 3, n and p are independently 0 or 1 and -- represents a single or double bond. Z is R1-N=, O-, S=, R1-P=, (R1)2P- or (R1)3P=, and when Z is (R1)2P-, n is 1, otherwise n is 0. R1, R2, R3, R4, R5 and R6 are independently hydrogen, amino, hydroxy, mercapto, alkoxy, alkyl, aryl or a heterocyclic moiety. When R6 is so defined, p is 1 and -- is a single bond. If m is 0, R1 and R2, R2 and R3, and R3 and R4 taken together can independently represent the carbon and heteroatoms necessary to complete a substituted or unsubstituted carbocyclic or heterocyclic nucleus, or if m is 1 to 3, R1 and R2, R5 and R6, and R3 and R4 can independently represent the carbon and heteroatoms necessary to complete a substituted or unsubstituted heterocyclic nucleus. When R5 and R6 are so defined, p is 0 when -- is a double bond, and p is 1 when -- is a single bond.
487887
Lovecchio Frank V.
Reczek James A.
Stewart Robert C.
Eastman Kodak Company
Gowling Lafleur Henderson Llp
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