Developing housing and conveying device and image forming...

Electrophotography – Image formation – Development

Reexamination Certificate

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Details

C399S255000, C399S256000

Reexamination Certificate

active

07856196

ABSTRACT:
A developing device includes a developer holding member that carries a developer; an upper developer housing section that houses the developer; a lower developer housing section that has a bottom surface lower than a bottom surface of the upper developer housing section and houses the developer; a toner supply section that includes an upper toner supply part, a lower toner supply part, and a toner transport section; an upper conveying section that includes a rotation shaft, a first conveying member, a second conveying member, and a diameter direction conveying part; and a lower conveying section that conveys at least one of the developer and the toner in a direction opposite to the conveying direction by the first conveying member.

REFERENCES:
patent: 2004/0179865 (2004-09-01), Nishiyama
patent: 2006/0029431 (2006-02-01), Tanaka et al.
patent: 2006/0204283 (2006-09-01), Yasuda
patent: 4-29273 (1992-01-01), None
patent: 5-188834 (1993-07-01), None
patent: 11-24382 (1999-01-01), None
patent: 11-30913 (1999-02-01), None
patent: 3070414 (2000-08-01), None
patent: 2002-148916 (2002-05-01), None
Notification of Reason for Refusal issued in counterpart Japanese Patent Application No. 2007-270067 dated Dec. 22, 2009.

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