G - Physics – 03 – C
Patent
G - Physics
03
C
96/139, 96/243,
G03C 7/00 (2006.01) C09B 27/00 (2006.01) G03C 7/28 (2006.01)
Patent
CA 1179879
Abstract A process for the production of photographic colour images by the silver dye bleach process, by exposure, sil- ver development, dye formation, dye bleach, silver bleach and fixing of a photographic material which, in a light- sensitive silver halide emulsion layer or in an adjacent layer, contains, dispersed in oil, an oil-soluble triazene of the formula Image or Image and an oil-soluble coupling component of the formula Image in which Ar1 is aryl or an aromatic heterocyclic radical, R1 is hydrogen, alkyl, aryl, hydroxyl, -(CH2CH2O)r-L1 or -OL1, in which L1 is alkyl and r is 1, 2 or 3, or R1 is Image , in which V is hydrogen or alkvl, and R2 is alkyl, aryl or -(CH2CH2O)r-L1, or R1 and R2, conjointly with the- nitrogen aeom to which they are bonded, form a ring, A1 and A2 independently of one another are an amine of the formula -NT1T2, in which T1 and T2 independently of one another are hydrogen, alkyl or aryl, and X1 and X2 independently of one another are hydrogen or alkyl, X3 is hydrogen, alkyl, alk- oxy, -O(C2H4O) -H, -O(CH2)m-OH, -O(CH2)m-OZ1 or -O(CH2CH2O)n-Z1, in which Z1 is alkyl, n is 1 to 5 and m is 2 to 4, or X3 is aryloxy, hydroxyl, halogen, -NHCOY1, -NHCOH, -NHCOOY1, -NHP(O)(OY1)2 or -NHSO2Y1, in which Y1 is alkyl, -O(CH2)ma-OH, -O(CH2CH2O)n-H, -O(CH2)m-OZ1 or -O(CH2CH2O)nZ1, or is aryl, and X4 is hydrogen, alkyl, -O(CH2)m-OH, -O(CH2CH2O)n-H, -O(CH2)m-OZ1 or -O(CH2CH2O)n-H, alkoxy, aryloxy or halogen, and the total of the carbon atoms in the substituerts X1, X2, X3 and X4 is at least 10. The material which has an enhanced sensentivity is treated, after developing the image silver, with an acid processing solution which contains a phase transfe- catalyst capable of transferring cations. The material used in this process exhibits a clearly increased sensitivity.
392177
Forte Eddy
Fryberg Mario
Jan Gerald
Ag Ciba-Geigy
Gowling Lafleur Henderson Llp
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