X-Ray intensifying screen

Details X-Ray intensifying screen X-Ray intensifying screen

1978-10-16

1983-02-22

Cooper, Jack

Stock material or miscellaneous articles

Composite

Of inorganic material

428913, 2504831, 2523014H, 2523014S, 2523016S, C09K 11475

Patent

active

043749054

ABSTRACT:
Improved performance of rare earth oxyhalide phosphors in x-ray image intensifying screens may be realized by admixing a small but effective amount of inorganic salts such as MgSO.sub.4 or ZnSO.sub.4 with the phosphor prior to the preparation of the screen. It is believed that H+ and SO.sub.4 =ions are present in a protective surface film surrounding each phosphor particle to help preserve the original emission brightness of the phosphor when exposed to humidity as well as reduce attack by volatile organic components which migrate from an associated photographic film.

REFERENCES:
patent: 2421208 (1947-05-01), Leverenz
patent: 3023313 (1962-02-01), De La Mater et al.
patent: 3070435 (1962-12-01), Reusser et al.
patent: 3617743 (1971-11-01), Rabatin et al.
patent: 3795814 (1974-03-01), Rabatin
patent: 4020231 (1977-04-01), Hedler et al.
patent: 4138361 (1979-02-01), Suys et al.

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