(19)
(11) EP 0 345 483 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
24.10.1990 Bulletin 1990/43

(43) Date of publication A2:
13.12.1989 Bulletin 1989/50

(21) Application number: 89108559.9

(22) Date of filing: 12.05.1989
(51) International Patent Classification (IPC)4G03C 1/035, G03C 1/12, G03C 5/16, G03C 1/825
(84) Designated Contracting States:
DE FR GB

(30) Priority: 09.06.1988 IT 2090388

(71) Applicant: MINNESOTA MINING AND MANUFACTURING COMPANY
St. Paul, Minnesota 55133-3427 (US)

(72) Inventors:
  • Cavallo, Elio
    I-17016 Ferrania/Savona (IT)
  • Bussi, Giuseppe
    I-17016 Ferrania/Savona (IT)

(74) Representative: Allaix, Roberto 
Office of Intellectual Property Counsel 3M ITALIA S.p.A. Viale Martiri della Libertà, 57
17016 Ferrania (Savona)
17016 Ferrania (Savona) (IT)


(56) References cited: : 
   
       


    (54) Light-sensitive elements for radiographic use and process for the formation of an X-ray image


    (57) A light-sensitive silver halide element for radiographic use with X-ray intensifying screens comprising coated on at least one side of a transparent support base at least a spectrally sensitized silver halide emulsion layer and, between the base and a silver halide emulsion layer, a hydrophilic colloid layer containing substantially light-insensitive silver halide grains on which a spectral sensitizing dye is adsorbed, said dye adsorbed on said grains having the absorption in a region of the electromagnetic spectrum corresponding substantially to the spectral sensitivity of the silver halide emulsion, is characterized by the fact that said silver halide grains are low iodide silver bromoiodide grains having an average grain size in the range of from 0.01 to 0.1 µm adsorbed with said spectral sensitizing dye to form a J-band.
    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.





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