Image forming apparatus, developing device and developer...

Electrophotography – Image formation – Development

Reexamination Certificate

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Reexamination Certificate

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07995955

ABSTRACT:
In order to provide an image forming apparatus capable of maintaining the image quality by making smooth flowability of a surplus developer, which is discharged according to supply of a new developer (toner and carrier), toward a collection box, there are provided a stirring screw that electrify toner by stirring the toner together with a carrier; a casing that supports the stirring screw and stores a developer in which the toner and the carrier are mixed; a inlet used to supply the developer to the casing; a guide that guides the surplus developer discharged from the casing downward; and a reciprocating member that moves on a flow surface of the guide along which the surplus developer flows.

REFERENCES:
patent: 5479247 (1995-12-01), Watanabe et al.
patent: 6418291 (2002-07-01), Sakemi
patent: 6587661 (2003-07-01), Shimmura et al.
patent: 7376374 (2008-05-01), Adachi
patent: 2006/0222411 (2006-10-01), Kumar et al.
patent: 2006/0239720 (2006-10-01), Hirota et al.
patent: 2007/0269235 (2007-11-01), Hirose
patent: 2009/0154972 (2009-06-01), Tanaka et al.
patent: 7-301984 (1995-11-01), None
patent: 9-185177 (1997-07-01), None

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