Developing device

Details Developing device Developing device

1997-03-31

1998-10-27

Moses, R. L.

Electrophotography

Image formation

Development

399276, G03G 1509

Patent

active

058289364

ABSTRACT:
A developing device is provided with a magnetic member having a plurality of magnetic poles N and S within a developing sleeve that rotates to transport a developer to an image bearing member. The device also includes a regulating member, which is formed of magnetic material, and which is spaced from the developing sleeve in so that the surface of the regulating member that is located on the upstream side in the developer transport direction is positioned downstream in the developer transport direction from a point of peak perpendicular magnetic flux density of the opposing magnetic pole of a magnetic member near the position at which the regulating member faces the developing sleeve, and positioned upstream in the developer transport direction from a point of 1/2 the peak perpendicular magnetic flux density of the opposing magnetic pole.

REFERENCES:
patent: 4391512 (1983-07-01), Nakamura et al.
patent: 4511239 (1985-04-01), Kanbe et al.
patent: 4887131 (1989-12-01), Kinoshita et al.
patent: 5153377 (1992-10-01), Kuwashima et al.

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