Radiographic intensifying screen

Details Radiographic intensifying screen Radiographic intensifying screen

1982-09-28

1984-09-18

Anderson, Bruce C.

Radiant energy

Invisible radiation responsive nonelectric signalling

Luminescent device

2504831, G01J 158

Patent

active

044726350

ABSTRACT:
A radiographic intensifying screen having improved modulation transfer function and/or sensitivity. The radiographic intensifying screen of the present invention comprises a support, a phosphor layer formed on the support, a protective film formed on the phosphor layer, wherein the phosphor layer includes a small phosphor particles layer at its support side consisting essentially of small phosphor particles with an average grain size of about 4 .mu.m or less and a binding agent; and a mixed large and small phosphor particles layer at its protective film side consisting essentially of large phosphor particles with an average grain size ranging from about 7 to 20 .mu.m, small phosphor particles present in the interstices of the large phosphor particles and with an average grain size of about 4 .mu.m or less and a binding agent.

REFERENCES:
patent: 2243828 (1941-05-01), Leverenz
patent: 2310852 (1943-02-01), Leverenz
patent: 2412654 (1946-12-01), Sadowsky
patent: 4088894 (1978-05-01), Rabatin
patent: 4316092 (1982-02-01), Rabatin

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