(19)
(11) EP 0 350 883 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
31.10.1990 Bulletin 1990/44

(43) Date of publication A2:
17.01.1990 Bulletin 1990/03

(21) Application number: 89112708.6

(22) Date of filing: 12.07.1989
(51) International Patent Classification (IPC)5: G03C 5/17
(84) Designated Contracting States:
BE DE FR GB IT NL

(30) Priority: 14.07.1988 IT 2136188

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

(72) Inventors:
  • Pesce, Sergio
    I-17016 Ferrania Savona (IT)
  • Winslow, John M.
    St. Paul Minnesota (US)

(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) Combination of photosensitive elements for use in radiography


    (57) Combination of photosensitive elements for use in radiography consisting of a pair of radiographic fluores­cent screens and a double-side coated silver halide ra­diographic element. Each screen is arranged adjacent to each silver halide layer and each screen is capable of imagewise emitting radiation to which the adjacent silver halide layer is sensitive when imagewise exposed to X radiation. The combination is characterized in that one fluorescent screen emits a first radiation in a first wavelength region of the electromagnetic spectrum and the other fluorescent screen emits a second radiation in a second wavelength region of the electromagnetic spectrum, and each silver halide layer is substantially insensitive to the radiation emitted by the opposite screen.







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