Variable energy development station using a magnet to...

Details Variable energy development station using a magnet to... Variable energy development station using a magnet to...

2007-07-12

2008-10-28

Gray, David M. (Department: 2852)

Electrophotography

Image formation

Development

C399S267000

Reexamination Certificate

active

07444104

ABSTRACT:
An improved development station extends the useful life of toner in the housing and increases the number of images developed by the developer supply. The improved development station includes a development station housing having a developer sump, a toner supply for providing toner material to the developer sump, a mixing auger for uniformly blending and charging toner particles provided by the toner supply into developer material, a magnetic roller for receiving the developer material and bringing the developer material into contact with a photoreceptive member, and a magnet for generating a varying magnetic field to restrict flow of the developer material in the development station housing.

REFERENCES:
patent: 3948217 (1976-04-01), Forward
patent: 4816870 (1989-03-01), Nagayama
patent: 5563689 (1996-10-01), Tompkins et al.
patent: 5659859 (1997-08-01), Kikuta et al.
patent: 6785481 (2004-08-01), Bray et al.

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