(19) |
 |
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(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: |
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13.12.1989 Bulletin 1989/50 |
(22) |
Date of filing: 12.05.1989 |
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(84) |
Designated Contracting States: |
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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: |
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- 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) |
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|
|
(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.
