Developing device and image forming apparatus equipped with...

Details Developing device and image forming apparatus equipped with... Developing device and image forming apparatus equipped with...

2011-08-30

2011-08-30

Gray, David M (Department: 2852)

Electrophotography

Image formation

Development

C399S119000, C399S222000, C399S263000

Reexamination Certificate

active

08010020

ABSTRACT:
The developer conveyance amount on the upstream side of an agitation conveyance path in a developer conveyance direction becomes larger than the amount of developer to be transported from a recovery conveyance path to the agitation conveyance path, by making the developer conveyance amount on the upstream side of an agitating screw in the developer conveyance direction equal to or larger than the developer conveyance amount on the downstream side of a recovery screw in the developer conveyance direction. Accordingly, the bulk of the developer existing on the downstream side of the recovery conveyance path in the developer conveyance direction can be prevented from reaching the level where the recovered developer re-adheres to a developing roller, and further the developer existing on the downstream side of the recovery conveyance path in the developer conveyance direction can be prevented from re-adhering to the developing roller.

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