Compositions – Inorganic luminescent compositions – Compositions containing halogen; e.g. – halides and oxyhalides
Patent
1990-06-29
1991-02-19
Cooper, Jack
Compositions
Inorganic luminescent compositions
Compositions containing halogen; e.g., halides and oxyhalides
C09K 1167
Patent
active
049942050
ABSTRACT:
An intensifying screen for producing a latent image in a silver halide radiographic element when imagewise exposed to X-radiation is disclosed. The screen contains a phosphor having a hafnia host containing zirconia in concentrations higher than those found in optical grade hafnia. The phosphor can include as an activator one or a combination of titanium, rare earth, and alkali metal ions. Phosphor preparation processes are also disclosed.
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Bryan Philip S.
Jarrold Gregory S.
Lambert Patrick M.
Towers Christine M.
Cooper Jack
Eastman Kodak Company
Thomas Carl O.
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