Radiant energy – Ionic separation or analysis – Static field-type ion path-bending selecting means
Patent
1975-11-07
1977-11-08
Braun, Fred L.
Radiant energy
Ionic separation or analysis
Static field-type ion path-bending selecting means
250561, 250571, G03D 1300
Patent
active
040578178
ABSTRACT:
A standby control attachment for an x-ray film processor uses infrared light reflection to detect the presence of a film in the infeed tray of the processor. A trigger circuit produces a control signal to activate a timer when film is detected. The timer operates processor control relays to switch processor components from a normal standby mode to a processing mode only for a preset timing interval to minimize water and energy consumption and processor wear. Multiple infrared detectors, each with its own trigger circuit, are arranged above the tray and across the film path so that detection of film by one or more of the detectors activates the timer. Control signals from the separate trigger circuits are also applied to auxiliary control devices, one of which activates a darkroom interlock system to lock darkroom access doors and break its white light circuit when film is in the tray. Others of the auxiliary control devices can be used singly or in series to count or measure the surface area of film processed for use in controlling processor chemical replenishment, silver recovery or other processor-related functions.
REFERENCES:
patent: 3472143 (1969-10-01), Hixon et al.
patent: 3561344 (1971-02-01), Frutiger et al.
patent: 3673419 (1972-06-01), Aasen
patent: 3686510 (1972-08-01), Korb
patent: 3787689 (1974-01-01), Fidelman
patent: 3787702 (1974-01-01), Hujer et al.
patent: 3852793 (1974-12-01), McClintock
Breunsbach Rex L.
Korb A. Norman
Braun Fred L.
Lok-A-Bin Systems, Inc.
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