Developing unit and developer stirring and transporting method

Details Developing unit and developer stirring and transporting method Developing unit and developer stirring and transporting method

2011-08-23

2011-08-23

Gray, David M (Department: 2852)

Electrophotography

Image formation

Development

Reexamination Certificate

active

08005405

ABSTRACT:
A developing unit and a developer stirring and transporting method are provided that enable smooth discharge of a developer in the developing unit without being affected by the inclination of the developing unit. A developing unit10has a developing roller12, a housing unit16configured to house a developer and having in its sidewall a discharge port14which discharges overflowing developer, a stirring and transporting member20configured to stir and transport the developer along a passage18formed in the housing unit16, and a deposit structure unit22provided in the passage18and configured to raise the height position of a bottom surface18apart of the passage18corresponding at least to the discharge port14to a position higher than the other areas of the passage18, and thereby deposit the developer near the discharge port14.

REFERENCES:
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patent: 6421516 (2002-07-01), Kinoshita et al.
patent: 2006/0062599 (2006-03-01), Shimmura et al.
patent: 2006/0165440 (2006-07-01), Adachi
patent: 07-121021 (1995-05-01), None
patent: 2000-81787 (2000-03-01), None
patent: 2004-145115 (2004-05-01), None
Office Action for U.S. Appl. No. 11/456,995 mailed on Jul. 22, 2009.
Office Action for U.S. Appl. No. 11/456,995 mailed on Jan. 7, 2010.

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