Image forming apparatus and developer level calculating...

Details Image forming apparatus and developer level calculating... Image forming apparatus and developer level calculating...

2011-03-22

2011-03-22

Brase, Sandra L (Department: 2884)

Electrophotography

Diagnostics

Consumable

Reexamination Certificate

active

07912385

ABSTRACT:
An image forming apparatus and a developer level calculating method of the same. The image forming apparatus includes a developing unit which includes a developing roller to provide the developer onto a photosensitive body, a developing sensor to sense a developer level, and a supplying roller to supply the developer to the developing roller; a developer bottle which supplies the developer to the developing unit; and a controller which calculates a number of first printing dots of the developing unit, converts the amount of the developer supplied from the developer bottle sensed by the developer sensor into a number of second printing dots, calculates a number of third printing dots on the basis of the number of the first printing dots and the second printing dots, and calculates total developer level of the developer bottle on the basis of the number of the third printing dots.

REFERENCES:
patent: 6459861 (2002-10-01), Sakurai et al.
patent: 6591070 (2003-07-01), Shoji et al.
patent: 7218871 (2007-05-01), Ogata
patent: 2006/0127108 (2006-06-01), Okuyama et al.
patent: 2004-354666 (2004-12-01), None

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