Light-sensitive elements for radiographic use in the formation o

Details Light-sensitive elements for radiographic use in the formation o Light-sensitive elements for radiographic use in the formation o

1986-07-17

1987-09-22

Brammer, Jack P.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Antihalation or filter layer containing

430518, 430523, G03C 184

Patent

active

046955313

ABSTRACT:
A light-sensitive silver halide element for radiographic use with intensifying screens has coated on at least one side of a transparent base at least a spectrally sensitized silver halide emulsion layer and, coated between the base and a silver halide emulsion layer, a hydrophilic colloid layer containing a water-soluble acid dye capable of being decolorized during the photographic processing, said dye having its absorption in a region of the electromagnetic spectrum corresponding to the spectral sensitivity of the silver halide emulsion, associated with a basic polymeric mordant which comprises repeating units of formula: ##STR1## wherein R.sub.1 is hydrogen or a methyl group, A is a --COO-- or --COO--alkylene group, R.sub.2 is hydrogen or a lower alkyl group and X is an anion.
The invention allows the use of low coverage weights of silver halide light-sensitive elements and provides x-ray images with a favorable image quality and sensitivity ratio.

REFERENCES:
patent: 2882156 (1959-04-01), Minsk
patent: 3282693 (1966-11-01), Jones et al.
patent: 3740228 (1973-06-01), Ohlschlager et al.

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