X-ray spot filmer

Details X-ray spot filmer X-ray spot filmer

1974-10-07

1976-11-02

Church, Craig E.

Radiant energy

Luminophor irradiation

Self-luminous article

250471, G03B 4116

Patent

active

039899500

ABSTRACT:
An X-ray apparatus includes a spot filmer for feeding sheet of unexposed film one at a time into a vacuum evacuable assembly for exposure, and for returning exposed film sheets to an exposed film magazine. The spot filmer has a housing defining a light tight enclosure. The film magazines are insertable through a door into the housing and into a film feed mechanism. The film feed mechanism unlatches, opens and positions the magazines; feeds a sheet of unexposed film into the vacuum evacuable assembly; releases the film sheet so the assembly can position the film sheet for exposure; and closes the film magazines. An orthogonal drive system positions the vacuum evacuable assembly to expose selected film sheet portions, and returns the assembly to a retracted position. The film feed mechanism opens the magazines; feeds the exposed film sheet into the exposed film magazine; and closes the magazines. Sensed infra-red radiation reflected from a film sheet is used to detect the travel of a film sheet between the magazines and the assembly and to initiate the operation of certain components of the system. Limit switches engageable with a number of the movable components initiate the subsequent movement of other components.

REFERENCES:
patent: 3510664 (1970-05-01), Nichols
patent: 3567931 (1971-03-01), Eelbema
patent: 3775613 (1973-11-01), Hommerin
patent: 3828196 (1974-08-01), Miba

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