Electrophotography – Diagnostics – Consumable
Patent
1997-05-08
1998-08-11
Brase, Sandra L.
Electrophotography
Diagnostics
Consumable
399 42, G03G 1508
Patent
active
057940940
ABSTRACT:
A toner detecting system includes an image forming apparatus having a toner reservoir. A toner sensor of the system has a toner sensing element positioned to detect toner amount within the toner reservoir. A pixel counter of the system is configured to count pixels used when forming images. A processor of the system associates counted pixels with previous toner use. The associated counted pixels and previous toner use cooperate to enable enhanced toner level characterization of remaining available toner level. A method for detecting toner level within a toner-reservoir of an image forming device according to the toner detecting system is also disclosed.
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patent: 5160966 (1992-11-01), Shiina et al.
patent: 5327196 (1994-07-01), Kato et al.
patent: 5655174 (1997-08-01), Hirst
patent: 5699096 (1997-12-01), Inagaki
patent: 5724627 (1998-03-01), Okuno et al.
Boockholdt Darius
Hooper Howard G.
Brase Sandra L.
Hewlett--Packard Company
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