CAPACITIVE TONER LEVEL SENSOR
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United States of America Patent
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-
Mar 6, 2018
Grant Date -
Mar 8, 2018
app pub date -
Sep 8, 2016
filing date -
Sep 8, 2016
priority date (Note) -
Granted
status (Latency Note)
Importance
Abstract
A toner container according to one example embodiment includes a housing having a reservoir for holding toner. A rotatable shaft is positioned in the reservoir and has a rotational axis. A toner agitator is rotatably coupled to the rotatable shaft. A first electrical conductor and a second electrical conductor are positioned on the housing. The first electrical conductor and the second electrical conductor form a capacitor having a capacitance that changes in response to a change in an amount of toner in the reservoir between the first electrical conductor and the second electrical conductor. The first electrical conductor includes a rod positioned in the reservoir at the rotational axis of the rotatable shaft and extending along the rotational axis of the rotatable shaft.
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