Radiation imagery chemistry: process – composition – or product th – Radiation sensitive product – Identified radiation sensitive composition with color...
Patent
1986-07-08
1988-05-31
Schilling, Richard L.
Radiation imagery chemistry: process, composition, or product th
Radiation sensitive product
Identified radiation sensitive composition with color...
430223, G03C 554, G03C 726
Patent
active
047481080
ABSTRACT:
In a dye diffusion transfer process the use of a photosensitive element incorporating hydroquinone-type or quinone-type redox-controlled yellow dye-releasing azo compounds containing in the releasable dye moiety a pyrazolone group carrying alkyl, aryl, aralkyl, hetaryl, or heterocyclyl on the 1-position and acylamido, alkylureido, cycloalkylureido, or arylureido on the 3-position, for improved color reproduction of the dye diffusion transfer image as a result of development and a redox-reaction. The invention also provides photosensitive elements incorporating such dye-releasing compounds.
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patent: 4477554 (1984-10-01), Van de Sande et al.
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patent: 4663273 (1987-05-01), Van de Sande et al.
Kok Piet
Van de Sande Christian C.
Agfa-Gevaert N.V.
Breiner A. W.
Schilling Richard L.
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