Developer cartridge, developing unit and image forming...

Details Developer cartridge, developing unit and image forming... Developer cartridge, developing unit and image forming...

2008-02-08

2010-06-22

Lee, Susan S (Department: 2884)

Electrophotography

Image formation

Development

C399S254000

Reexamination Certificate

active

07742726

ABSTRACT:
A developer cartridge, developing unit, and image forming apparatus are provided. The developer cartridge includes a cartridge cabinet including a developer accommodate chamber, a supply opening, and a return opening. The developer cartridge further includes a rotational shaft that is rotatably supported in the cartridge cabinet, a first agitating blade that is attached to the rotational shaft and that is located in a position opposed to the return opening, a distance from the rotational shaft to a distal end of the first agitating blade being shorter than a distance from the rotational shaft to the return opening, and a second agitating blade that is attached to the rotational shaft and that is located in a position opposed to the supply opening, a distance from the rotational shaft to a distal end of the second agitating blade being longer than a distance from the rotational shaft to the supply opening.

REFERENCES:
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patent: 7634218 (2009-12-01), Sato
patent: 2001/0046395 (2001-11-01), Ashikari et al.
patent: 2002/0034404 (2002-03-01), Kojima et al.
patent: 2007/0223971 (2007-09-01), Takagi
patent: 2008/0298836 (2008-12-01), Sato
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patent: 2002-229316 (2002-08-01), None
patent: 2006-058446 (2006-03-01), None
JP Office Action dtd Mar. 5, 2009, JP Appln. 2007-047473, partial English translation.

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