Estimating toner levels

Details Estimating toner levels Estimating toner levels

2005-08-02

2005-08-02

Brase, Sandra L. (Department: 2852)

Electrophotography

Diagnostics

Consumable

C347S140000

Reexamination Certificate

active

06925268

ABSTRACT:
Estimating toner levels. A method embodiment includes maintaining a running pulse width count, sensing a toner level, and comparing the running pulse width count with an expected pulse width count to estimate a toner level. If the estimated toner level deviates from the sensed toner level, the running pulse width count and the sensed toner level are used to estimate the remaining toner level.

REFERENCES:
patent: 5802420 (1998-09-01), Garr et al.
patent: 6456802 (2002-09-01), Phillips
patent: 6459861 (2002-10-01), Sakurai et al.
patent: 6510294 (2003-01-01), Hakamada
patent: 6516160 (2003-02-01), Rodriguez

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