Radiation imagery chemistry: process – composition – or product th – Thermographic process – Heat applied after imaging
Patent
1999-05-14
2000-11-28
Schilling, Richard L.
Radiation imagery chemistry: process, composition, or product th
Thermographic process
Heat applied after imaging
430505, 430572, 430527, 430531, 430536, 430961, 430533, 430432, 430434, G03C 176, G03C 191, G03C 815, G03C 189, G03C 1108
Patent
active
061533629
ABSTRACT:
A photographic element containing a support; at least two contiguous layers, at least one of which is a silver halide emulsion layer superposed on a side of said support; a processing solution permeable protective overcoat containing a urethane-vinyl copolymer having acid functionalities wherein a weight ratio of a urethane component in the copolymer comprises from 20 to 100 percent and a weight ratio of a vinyl component in the copolymer comprises from 0 to 80 percent; a crosslinker for the said copolymer; and a second polymer selected from the group consisting of polyvinyl alcohol, cellulose ethers, n-vinyl amides, polyesters, poly(ethylene oxide), starch, proteins, whey, albumin, poly(acrylic acid), alginates and gums overlying the said at least two contiguous layers; and wherein the ratio of the gelatin to non-gelatin content of the dried layers immediately underlying the uppermost gelatin layer is less than 1.3 with the proviso that the water content of the wet coating of all the gelatin layers prior to drying is at a coverage of greater than 53 g/m.sup.2.
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Jones Tamara K.
Lobo Lloyd A.
Nair Mridula
Eastman Kodak Company
Ruoff Carl F.
Schilling Richard L.
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