Organic compounds -- part of the class 532-570 series – Organic compounds – Amino nitrogen containing
Patent
1991-12-20
1994-03-29
Tsang, Cecilia
Organic compounds -- part of the class 532-570 series
Organic compounds
Amino nitrogen containing
544278, 544282, 544301, 546219, 548544, 549 66, 549477, 564250, C07C10912, C07D10912, C07D49100, C07D23970, C07D21140
Patent
active
052986586
ABSTRACT:
A photographic element is detailed which provides for improved resolution by decreasing the blue and ultraviolet radiation typically associated with internal scatter and print-through. These and other improvements are provided in a photographic element comprising a support having thereon at least one hydrophilic colloid layer, and a radiation sensitive silver halide emulsion layer present as a portion of the colloid layer or in a separate layer wherein the emulsion contains a dye of the formula: ##STR1## wherein: A=counterion chosen from the set consisting of lithium, sodium, potassium, ammonium and alkylammonium and
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E. I. Du Pont de Nemours and Company
Tsang Cecilia
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