Image forming apparatus and toner charge amount adjustment method of the image forming apparatus
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United States of America Patent
Stats
-
Aug 26, 2014
Grant Date -
Jan 12, 2012
app pub date -
Jun 28, 2011
filing date -
Jul 8, 2010
priority date (Note) -
In Force
status (Latency Note)
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Abstract
An image forming apparatus includes a developer containing part, a developer mixer, a mixer drive motor, a magnetic sleeve, a sleeve drive motor, a mixer rotation speed determination part and a motor drive controller. The developer containing part contains a two-component developer including a toner and a carrier. The developer mixer is provided in the developer containing part, agitates the two-component developer, and charges the toner and the carrier. The mixer rotation speed determination part determines the mixer rotation speed of the mixer drive motor according to a supply amount of the toner supplied to the developer containing part from a toner cartridge by driving of a toner supply motor. The motor drive controller independently performs rotation control of the sleeve drive motor and the mixer drive motor, and rotates and controls the mixer drive motor at the mixer rotation speed determined by the mixer rotation speed determination part.
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