Radiation imagery chemistry: process – composition – or product th – Radiation sensitive product – Two or more radiation-sensitive layers containing other than...
Patent
1990-03-29
1992-04-28
Bowers, Jr., Charles L.
Radiation imagery chemistry: process, composition, or product th
Radiation sensitive product
Two or more radiation-sensitive layers containing other than...
430966, 430509, G03C 146
Patent
active
051088819
ABSTRACT:
Radiographic elements are disclosed with silver halide emulsion layer units coated on opposite sides of a film support. The radiographic elements are constructed to reduce crossover during exposure by intensifying screens to minimal levels. To permit the minimal crossover radiographic elements to be employed with varied intensifying screens, one of the silver halide emulsion layer units over an exposure range of at least 1.0 log E exhibits an average contrast of from 0.5 to <2.0 and point gammas that differ from the average contrast by less than .+-.40% and the second silver halide emulsion layer unit exhibits a mid-scale contrast of at least 0.5 greater than the average contrast of the first silvert halide emulsion layer unit.
REFERENCES:
patent: 4425425 (1984-01-01), Abbott et al.
patent: 4425426 (1984-01-01), Abbott et al.
patent: 4803150 (1989-02-01), Dickerson et al.
patent: 4900652 (1990-02-01), Dickerson et al.
patent: 4994355 (1991-02-01), Dickerson et al.
Bunch Phillip C.
Dickerson Robert E.
Baker Janet C.
Bowers Jr. Charles L.
Eastman Kodak Company
Thomas Carl O.
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