Rotary developing device for an image forming apparatus

Details Rotary developing device for an image forming apparatus Rotary developing device for an image forming apparatus

1995-11-06

1997-08-12

Grimley, Arthur T.

Electrophotography

Image formation

Development

222DIG1, 366323, 399223, G03G 1501, G03G 1508

Patent

active

056571151

ABSTRACT:
In an image forming apparatus, a rotary developing device has a developing unit in which a plurality of developing chambers are arranged around an axis of rotation. The developing unit is rotated about the axis to bring one of the chambers to a developing position where an image carrier is located. In each of the chambers, part of a developer removed by a doctor blade is received by a guide and then released from the guide into the chamber. This part of the developer is agitated in the vertical direction and conveyed together with the developer existing in the chamber by the rotation of the device. As a result, the developer is agitated, conveyed and charged in a desirable manner.

REFERENCES:
patent: 4136969 (1979-01-01), Meyer
patent: 4821075 (1989-04-01), Saito et al.
patent: 5109254 (1992-04-01), Oka et al.
patent: 5512984 (1996-04-01), Kimura et al.

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