Radiation imagery chemistry: process – composition – or product th – Thermographic process – Heat applied after imaging
Patent
1999-01-22
2000-06-20
Schilling, Richard L.
Radiation imagery chemistry: process, composition, or product th
Thermographic process
Heat applied after imaging
430512, 430527, 430531, 430536, 430961, G03C 529, G03C 176, G03C 1106
Patent
active
06077648&
ABSTRACT:
The present invention is a photographic element which includes a support, at least one silver halide emulsion layer superposed on the support and a processing solution permeable protective overcoat overlying the silver halide emulsion layer. The processing solution permeable overcoat is composed of a urethane-vinyl copolymer having acid functionalities wherein a weight ratio of the urethane in the copolymer comprises from 20 to 100 percent and a weight ratio of the vinyl in the copolymer comprises from 0 to 80 percent. The present invention is a method of making a photographic element which includes providing an photographic element having a support, a silver halide emulsion layer superposed on the support and a processing solution permeable protective overcoat overlying the silver halide emulsion layer. The processing solution permeable overcoat is composed of a urethane-vinyl copolymer having acid functionalities wherein a weight ratio of the urethane in the polymer comprises from 20 to 100 percent and a weight ratio of the vinyl in the polymer comprises from 0 to 80 percent. The photographic element is developed in a developer solution having a pH greater than 7 and the processing solution permeable overcoat is fused.
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Jones Tamara K.
Lobo Lloyd A.
Nair Mridula
Schell Brian A.
Eastman Kodak Company
Ruoff Carl F.
Schilling Richard L.
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