Light-sensitive materials for radiographic use and process...

Details Light-sensitive materials for radiographic use and process... Light-sensitive materials for radiographic use and process...

G - Physics

03

C

96/207

G03C 5/16 (2006.01) G03C 1/835 (2006.01)

Patent

CA 1268986

LIGHT-SENSITIVE MATERIALS FOR RADIOGRAPHIC USE AND PROCESS FOR THE FORMATION OF AN X-RAY IMAGE ABSTRACT OF THE DISCLOSURE A light sensitive silver halide element fox radio- graphic 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 be- tween 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: Image wherein R1 is hydrogen or a methyl group, A is a -COO- or -COO-alkylene group, R2 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 sensiti- vity ratio.

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