X-ray radiography apparatus

Details X-ray radiography apparatus X-ray radiography apparatus

1988-03-25

1989-01-03

Fields, Carolyn E.

X-ray or gamma ray systems or devices

Photographic detector support

Serial film or film pack changer

378181, 378174, 271258, 271155, 2503272, G03B 4116

Patent

active

047962852

ABSTRACT:
An X-ray radiography apparatus having a supply magazine, a film-removing unit, an X-ray imaging unit, a reference position detector, a suction detector, a distance detector, a discriminator, and a display unit. The supply magazine contains a stack of unexposed films. The reference position detector detects when the suction unit passes a reference position located above the supply magazine. The suction detector detects when a sheet film has been attracted to the suction unit. The distance detector detects the distance the suction unit has moved vertically, from the outputs of the reference position detector and the suction detector. This distance is equal to the distance between the reference position and the topmost unexposed film stored in the magazine. The discriminator determines the number of unexposed films remaining in the supply vessel from the distance detected by the distance detector.

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