Patent
1974-02-05
1976-03-30
Braun, Fred L.
G03D 302
Patent
active
039478564
ABSTRACT:
A bath container for liquid treatment of a photographic emulsion carrier has a refill bottle which automatically adds fresh liquid to maintain the liquid level. An overflow maintains the maximum liquid level. A pump having an intake as far removed as possible from the refill bottle serves to circulate the liquid. It further serves to forceably remove liquid from the container corresponding to the quantity of emulsion carrier processed. The signal signifying the quantity of processed emulsion carrier is furnished by a selector switch while scanning the emulsion carrier and connects a capacitor to a constant current source in the presence of the emulsion carrier and to a discharge circuit, in turn connected to circuits which energize the exhaust pump operation, in the absence of the emulsion carrier. Further circuits directly connected to the capacitor serve to energize the exhaust pump operation when the voltage across the capacitor has reached a predetermined voltage.
REFERENCES:
patent: 3334566 (1967-08-01), Friedel
patent: 3368472 (1968-02-01), VanBouwel et al.
patent: 3597075 (1971-08-01), Kobayashi
patent: 3650196 (1972-03-01), Hosoe et al.
patent: 3712203 (1973-01-01), Kishi et al.
Muller Jurgen
Stahl Werner
Stievenart Emile Frans
Agfa-Gevaert AG
Braun Fred L.
Striker Michael J.
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