Gas separation: apparatus – Electric field separation apparatus – Collecting electrode details
Patent
1975-03-21
1977-01-25
Brown, J. Travis
Gas separation: apparatus
Electric field separation apparatus
Collecting electrode details
96 9, 96 55, 260151, G03C 140, G03C 704
Patent
active
040049299
ABSTRACT:
Photographic elements containing at least one silver halide emulsion layer in which there is incorporated a cyan-color forming material which, upon reaction with oxidized color developer, forms a cyan dye having unwanted absorption in the green and blue regions of the visible spectrum can be color corrected to a surprising degree by the incorporation into said element of a colored coupler compound having the structure: ##STR1## wherein R.sup.2 is an alkyl group containing 1 to 6 carbon atoms, R.sup.3 and R.sup.4 are independently selected and are alkyl groups containing 2 to 6 carbon atoms, B is hydrogen or CooR.sup.6 wherein R.sup.6 is an alkyl group containing 1 to 8 carbon atoms, and A is a sulfonated naphthylazo group selected from those having the structure: ##STR2## wherein R.sup.5 is an alkyl group containing 1 to 4 carbon atoms, M is photographically inactive, M is a monovalent cation.
REFERENCES:
patent: 3408194 (1968-10-01), Loria
patent: 3476563 (1969-11-01), Loria
patent: 3644498 (1972-02-01), Loria
patent: 3839044 (1974-10-01), Salminen et al.
Brown J. Travis
Eastman Kodak Company
Levitt J. G.
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