Developing apparatus using a dual component developer

Details Developing apparatus using a dual component developer Developing apparatus using a dual component developer

1997-01-30

1998-08-25

Brase, Sandra L.

Electrophotography

Image formation

Development

399267, G03G 1509

Patent

active

057992347

ABSTRACT:
A developing apparatus comprises: a developer support being disposed in the proximity of or in contact with an image support having a surface on which an electrostatic latent image is formed, the developer support having a peripheral surface supported turnably; and a developing bias power supply for supplying a developing bias voltage between the developer support and the image support, wherein a dual component developer including toner and magnetic carriers is supported on the peripheral surface of the developer support to be transported, and the toner is transferred to the image support in an electric field formed at a position where the image support faces the developer support for forming a toner image, and the developer support has a plurality of magnetic poles for attracting almost one layer of the carriers on the peripheral surface of the developer support almost uniformly.

REFERENCES:
patent: 4851874 (1989-07-01), Ogiyama
patent: 4896625 (1990-01-01), Sakamoto et al.
patent: 5319337 (1994-06-01), Matsunari et al.
patent: 5360940 (1994-11-01), Hays
patent: 5574545 (1996-11-01), Hosoi et al.

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