Developing device for an image forming apparatus and developing

Details Developing device for an image forming apparatus and developing Developing device for an image forming apparatus and developing

1998-09-25

1999-11-23

Royer, William

Electrophotography

Image formation

Development

399273, 399277, G03G 1509

Patent

active

059915854

ABSTRACT:
A developing device for an electrophotographic apparatus and a developing roller therefor are disclosed. Polarity identical throughout a range between a magnetic conveying pole and a magnetic depositing pole on a sleeve forms a repulsive magnetic field. Therefore, even when the diameter of the sleeve is reduced for the miniaturization of the developing device, a developer can be surely released from the sleeve despite a decrease in the width of a developer releasing portion in the direction of rotation of the sleeve.

REFERENCES:
patent: 5655191 (1997-08-01), Furuya et al.

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