Radiographic assembly having reduced image-wise cross-over and s

Details Radiographic assembly having reduced image-wise cross-over and s Radiographic assembly having reduced image-wise cross-over and s

1993-06-07

1994-10-11

Neville, Thomas R.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Two or more radiation-sensitive layers containing other than...

430139, 430539, 430963, 430966, 430967, 430622, 430509, 430621, G03C 146

Patent

active

053546482

ABSTRACT:
A radiographic assembly comprising:
a radiographic element which comprises a support and a front and back pair of silver halide emulsion layers coated on the opposite sides of the support, and
a front and back pair of intensifying screens adjacent said front and back emulsion layers, respectively,
wherein at least one of said silver halide emulsion layers shows a swelling index lower than 140% and a melting time of from 45 to 120 minutes, and the contrast difference between said pair of silver halide emulsion layers is at least 0.5,
wherein the X-ray stimulated light emission difference between said pair of intensifying screens is at least 0.6 IogE, and
wherein the average imagewise cross-over of said radiographic element is lower than 5% at optical density of from 0.5 to 1.75 and in the range of from 5 to 15% at optical density of from 1.75 to 3.25, said imagewise cross-over being measured according to the formula described in the specificaton.

REFERENCES:
patent: 4173481 (1979-11-01), Sera et al.
patent: 4414304 (1983-11-01), Dickerson
patent: 4425425 (1984-01-01), Abbott et al.
patent: 4847189 (1989-07-01), Suzuki et al.
patent: 4994355 (1991-02-01), Dickerson et al.
patent: 4997750 (1991-05-01), Dickerson et al.
patent: 5021327 (1991-06-01), Bunch et al.
patent: 5108881 (1992-04-01), Dickerson et al.
patent: 5187259 (1993-02-01), Sterman et al.
Research Disclosure Dec. 1973--Disclosed anonymously (R2574) 11619; (R2575) 11620; (R2584) 11629.

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