Radiation image erase unit for use with stimulable phosphor shee

Details Radiation image erase unit for use with stimulable phosphor shee Radiation image erase unit for use with stimulable phosphor shee

1986-04-17

1988-06-28

Howell, Janice A.

Radiant energy

Invisible radiation responsive nonelectric signalling

Luminescent device

2503272, G01T 110

Patent

active

047541458

ABSTRACT:
A radiation image erase unit erases a remaining radiation image from a stimulable phosphor sheet by exposing the same to erasure light after reading out a radiation image stored thereon by applying stimulating light to the stimulable phosphor sheet to cause the same to emit light representative of the radiation image and detecting and converting the light emitted from the stimulable phosphor sheet photoelectrically to an electric signal. When the illuminance of the erasure light emitted from erasing light sources is lowered, or one or more of the erasing light sources fail to be energized, the stimulable phosphor sheet is controlled to remain in the radiation image erase unit during a time dependent on the reduction in the illuminance of the erasure light. Any remaining radiation image is thus completely erased from the stimulable phosphor sheet in preparation for the recording of a next radiation image thereon.

REFERENCES:
patent: 3433949 (1969-03-01), Truhan
patent: 3679903 (1972-07-01), Blitchington, Jr.
patent: 4258264 (1981-03-01), Kotera et al.
patent: 4276473 (1981-06-01), Kato et al.
patent: 4315318 (1982-02-01), Kato et al.
patent: 4387428 (1983-06-01), Ishida et al.
patent: 4400619 (1983-08-01), Kotera et al.
patent: 4496838 (1985-01-01), Umemoto et al.
patent: 4533853 (1985-08-01), Hammond et al.
patent: 4584482 (1986-04-01), Suzuki et al.

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