Toner residual amount detecting device

Details Toner residual amount detecting device Toner residual amount detecting device

1976-12-16

1979-01-09

Yasich, Daniel M.

Dispensing

With recorder, register, indicator, signal or exhibitor

Audible

73304C, 222DIG1, 340617, B67D 532, G08B 706

Patent

active

041334531

ABSTRACT:
A toner residual amount detecting device for detecting a residual amount of toner in a toner hopper, comprises a capacitor section constructed of at least two electroconductive plates oppositely arranged in a toner-filled hopper, and an electric circuit portion adapted to detect a capacitance between the electroconductive plates which is varied according to a residual amount of toner in the toner hopper.

REFERENCES:
patent: 3301056 (1967-01-01), Blanchard et al.
patent: 3375716 (1968-04-01), Hersch
patent: 3498500 (1970-03-01), Hansen
patent: 3520445 (1970-07-01), Hansen
patent: 3533286 (1970-10-01), Westcott et al.
patent: 3706980 (1972-12-01), Maltby

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