Wiper arrangement for toner level sensor

Details Wiper arrangement for toner level sensor Wiper arrangement for toner level sensor

1977-06-02

1979-01-23

Scherbel, David A.

Dispensing

With recorder, register, indicator, signal or exhibitor

222DIG1, 350 61, B41F 3106

Patent

active

041356420

ABSTRACT:
A toner dispenser having a rotatable cylindrical dispenser roll and an automatic low toner level indicator comprising a lamp and photocell mounted in opposed walls of the dispenser adjacent the bottom of the dispenser housing. The lamp and photocell are separated from the toner in the dispenser by transparent windows. A wiping arrangement is provided inside the dispenser to periodically clean the windows including wiper pads biased into contact with the windows and movable periodically back and forth across the surface of the windows in response to rotation of the dispenser roll.

REFERENCES:
patent: 3409901 (1968-11-01), Dost et al.
patent: 3475859 (1969-11-01), Pirlet
patent: 3498500 (1970-03-01), Hanson
patent: 3596807 (1971-08-01), Hudson et al.
patent: 3834806 (1974-09-01), Whited
patent: 3844661 (1974-10-01), Birkett et al.

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