Developing device and image forming device

Details Developing device and image forming device Developing device and image forming device

2009-03-24

2011-10-25

Tran, Hoan (Department: 2884)

Electrophotography

Image formation

Development

C399S258000, C399S260000

Reexamination Certificate

active

08045895

ABSTRACT:
A developing device has: a developer housing chamber in which developer is housed; a developer holding member holding developer by magnetic force; a partitioning wall having an overlapping region that, in a transparent plan view, is positioned upward of the developer holding member and overlaps the developer holding member in an up/down direction; and an opening portion formed in the overlapping region of the partitioning wall. The partitioning wall is a portion of a separating wall of the developer housing chamber, and is provided between the developer housing chamber and the developer holding member.

REFERENCES:
patent: 5012285 (1991-04-01), Oka et al.
patent: 7720405 (2010-05-01), Okabe
patent: 63-273890 (1988-11-01), None
patent: 2-025856 (1990-01-01), None
patent: 2003-57932 (2003-02-01), None
patent: 2006-276534 (2006-10-01), None
patent: 2008-015022 (2008-01-01), None

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