Radiation imagery chemistry: process – composition – or product th – Color imaging process – Using identified radiation sensitive composition in the...
Patent
1981-12-02
1983-09-13
Louie, Jr., Won H.
Radiation imagery chemistry: process, composition, or product th
Color imaging process
Using identified radiation sensitive composition in the...
430376, 430543, 430546, 430505, 430393, 430431, 430460, 430461, 430462, G03C 700, G03C 176, G03C 140
Patent
active
044042736
ABSTRACT:
A process for the production of photographic color images by the silver dye bleach process, by exposure, silver 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 ##STR1## and an oil-soluble coupling component of the formula ##STR2## in which Ar.sub.1 is aryl or an aromatic heterocyclic radical, R.sub.1 is hydrogen, alkyl, aryl, hydroxyl, --(CH.sub.2 CH.sub.2 O).sub.r --L.sub.1 or --OL.sub.1, in which L.sub.1 is alkyl and r is 1, 2 or 3, or R.sub.1 is ##STR3## in which V is hydrogen or alkyl, and R.sub.2 is alkyl, aryl or --(CH.sub.2 CH.sub.2 O).sub.r --L.sub.1, or R.sub.1 and R.sub.2, conjointly with the nitrogen atom to which they are bonded, form a ring, A.sub.1 and A.sub.2 independently of one another are an amine of the formula --NT.sub.1 T.sub.2, in which T.sub.1 and T.sub.2 independently of one another are hydrogen, alkyl or aryl, and X.sub.1 and X.sub.2 independently of one another are hydrogen or alkyl, X.sub.3 is hydrogen, alkyl, alkoxy, --O(C.sub.2 H.sub.4 O).sub.n, --H, --O(CH).sub.2).sub.m --OH, --O(CH.sub.2).sub.m --OZ.sub.1 or --O(CH.sub.2 CH.sub.2 O).sub.n --Z.sub.1, in which Z.sub.1 is alkyl, n is 1 to 5 and m is 2 to 4, or X.sub.3 is aryloxy, hydroxyl, halogen, --NHCOY.sub.1, --NHCOH, --NHCOOY.sub.1, --NHP(O)(OY.sub.1).sub.2 or --NHSO.sub.2 Y.sub.1, in which Y.sub.1 is alkyl, --O(CH.sub.2).sub.m --OH, --O(CH.sub.2 CH.sub.2 O).sub.n --H, --O(CH.sub.2).sub.m --OZ.sub.1 or --O(CH.sub.2 CH.sub.2 O).sub.n --Z.sub.1, or is aryl, and X.sub.4 is hydrogen, alkyl, --O(CH.sub.2).sub.m --OH, --O(CH.sub.2 CH.sub.2 O).sub.n --H, --O(CH.sub.2).sub.m --OZ.sub.1 or --O(CH.sub.2 CH.sub.2 O).sub.n Z.sub.1, alkoxy, aryloxy or halogen, and the total of the carbon atoms in the substituents X.sub.1, X.sub.2, X.sub.3 and X.sub.4 is at least 10.
The material which has an enhanced sensitivity is treated, after developing the image silver, with an acid processing solution which contains a phase transfer catalyst capable of transferring cations.
The material used in this process exhibits a clearly increased sensitivity.
REFERENCES:
patent: 2071688 (1937-02-01), Gaspar
patent: 2653874 (1953-09-01), Dreyfuss
Forte Eddy
Fryberg Mario
Jan Gerald
Ciba-Geigy AG
Kolodny Joseph G.
Louie, Jr. Won H.
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