Image forming apparatus with toner concentration controller

Details Image forming apparatus with toner concentration controller Image forming apparatus with toner concentration controller

2007-01-02

2007-01-02

Chen, Sophia S. (Department: 2852)

Electrophotography

Diagnostics

Consumable

C399S030000

Reexamination Certificate

active

10916601

ABSTRACT:
An image forming apparatus includes a toner concentration detector for detecting the toner concentration within a two-component developing unit, a toner supply unit for supplying a toner into the developing unit, a storage unit for sequentially holding and updating a history of a toner supply operation for a certain period of time, and a toner concentration control unit for determining the time of the toner supply operation by the toner supply unit, based on information stored in the storage unit and a difference between an output value of the toner concentration detector and a reference value, and maintaining the toner concentration constant.

REFERENCES:
patent: 2002/0025178 (2002-02-01), Suzuki
patent: 11-52700 (1999-02-01), None

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