1977-04-08
1978-08-01
Hix, L. T.
354298, G03D 1300
Patent
active
041046706
ABSTRACT:
An automatic replenisher system for photographic processors has an improved, digital electronic control. The control includes sensors and signal processing circuitry which provide a signal having a frequency indicative of a measured parameter (such as film density or film transport speed) which is associated with the operation of the processor. A counter counts in response to the variable frequency signal. The counter is interrogated at predetermined intervals, and an energizing signal is produced. The energizing signal has a time duration which is determined by the count in the counter at the time of interrogation.
REFERENCES:
patent: 3529529 (1970-09-01), Schumacher
patent: 3559555 (1971-02-01), Street
patent: 3561344 (1971-02-01), Frutiger et al.
patent: 3696728 (1972-10-01), Hope
patent: 3752052 (1973-08-01), Hope et al.
patent: 3822723 (1974-07-01), Crowell et al.
patent: 3905698 (1975-09-01), Schroter et al.
patent: 3927417 (1975-12-01), Kinoshita et al.
patent: 4057818 (1977-11-01), Gaskell et al.
Charnley Ralph L.
Kumpula Clyde A.
Adams John W.
Fairbairn David R.
Hix L. T,.
Mathews Alan
Pako Corporation
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