Developing device having magnetic seals

Details Developing device having magnetic seals Developing device having magnetic seals

1997-07-18

2000-12-12

Royer, William J.

Electrophotography

Internal machine environment

Particle or contaminant control

G03G 1508

Patent

active

061609765

ABSTRACT:
A developing device includes a developer container containing magnetic particles; a developer holding unit formed at an opening portion of the developer container, the developer holding unit rotating while holding a developer; a magnetic field generating unit placed in the developer holding unit; a magnet placed along a circumferential direction of the developer holding unit to form a magnetic seal between the magnet and the developer holding unit; and a magnetic unit placed to be adjacent to the magnet. The developing device attains a reduction in driving torque and a high magnetic sealing performance.

REFERENCES:
patent: 5187326 (1993-02-01), Shirai
patent: 5475470 (1995-12-01), Sasago et al.
patent: 5543898 (1996-08-01), Shishido et al.
patent: 5563689 (1996-10-01), Tompkins et al.
patent: 5585895 (1996-12-01), Yashiro et al.

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