Developing device and image forming apparatus having the same

Details Developing device and image forming apparatus having the same Developing device and image forming apparatus having the same

2011-08-23

2011-08-23

Gray, David M (Department: 2852)

Electrophotography

Image formation

Development

C399S281000

Reexamination Certificate

active

08005404

ABSTRACT:
A developing device is provided that facilitates developing agent delivery upward. A cartridge includes a developing roller, a supply roller, and a container disposed below the supply roller. The container can have an upper portion formed with an opening having upper and lower edges. A conveying member can be rotatably disposed in and in rotational contact with an inner surface of the container for delivering the developing agent upward. The developing agent container can include a first wall portion for receiving developing agent through the opening. The first wall portion extends from the lower edge in a downstream direction with respect to a rotational direction of the conveying member toward a bottommost portion of the supply roller. The container also includes a second wall portion extending from the upper edge in an upstream direction. The conveying member can be in simultaneous sliding contact with the first and second wall portions.

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JP Office Action dtd Feb. 16, 2010, JP Appln. 2008-117979, English translation.
JP Office Action dtd Oct. 26, 2010, JP Appln. 2010-151810, English Translation.
CN Office Action dtd Jan. 31, 2011, JP Appln. 200910136999.1, English Translation.

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