Low crossover radiographic elements capable of being rapidly pro

Details Low crossover radiographic elements capable of being rapidly pro Low crossover radiographic elements capable of being rapidly pro

1996-01-29

1996-11-19

Le, Hoa Van

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

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

430496, 430507, 430517, 430966, G03C 146

Patent

active

055761569

ABSTRACT:
A radiographic element is disclosed having emulsion layers coated on opposite surfaces of a transparent film support. To facilitate rapid processing the emulsion layers are fully forehardened and less than 35 mg/dm.sup.2 of hydrophilic colloid is coated on each major surface. To reduce crossover and hydrophilic colloid, emulsions on the opposite sides of the support are each divided into two layers with the layer coated nearest the support containing a particulate dye capable of being decolorized during processing. Particulate dye and silver halide grains together account for between 30 and 70 percent of the total weight of the emulsion layers. Combined with the use of spectrally sensitized tabular grain emulsions crossover can be reduced to less than 15 percent while processing can be completed in less than 45 seconds. The distribution of hydrophilic colloid and silver halide grains chosen achieves low wet pressure sensitivity.

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patent: 4847189 (1989-07-01), Suzuki et al.
patent: 4900652 (1990-02-01), Dickerson et al.
patent: 5021327 (1991-06-01), Bunch et al.
patent: 5147769 (1992-09-01), Toyn et al.
patent: 5246824 (1993-09-01), Delfino et al.
patent: 5399470 (1995-03-01), Dickerson et al.

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