Developing device, image forming apparatus, and process...

Details Developing device, image forming apparatus, and process... Developing device, image forming apparatus, and process...

2009-03-11

2010-11-16

Tran, Hoan (Department: 2884)

Electrophotography

Image formation

Development

Reexamination Certificate

active

07835677

ABSTRACT:
Provided is a developing device containing a two-component developer including a magnetic carrier and a toner; a developer bearing member containing a nonmagnetic developing sleeve configured to bear the two-component developer on a surface thereof while rotating; a magnetic field generating unit fixed inside of the nonmagnetic developing sleeve; and a developer amount control member configured to control an amount of the two-component developer borne on the developer bearing member. The magnetic carrier contains a core material and a coating layer coated on the core material, and the coating layer containing a binder resin and conductive particles. The magnetic carrier satisfy a ratio D/h of 1.00<[D/h]≦1.95, where D denotes an average primary particle diameter of the conductive fine particles, and h denotes a thickness of the coating layer, and a ratio Ra/D of 1.0<[Ra/D]<10.0, where Ra denotes a surface roughness of the developing sleeve.

REFERENCES:
patent: 7003235 (2006-02-01), Azami et al.
patent: 7381513 (2008-06-01), Suzuki et al.
patent: 7592116 (2009-09-01), Suzuki et al.
patent: 7664439 (2010-02-01), Sugiura
patent: 2006/0210906 (2006-09-01), Suzuki et al.
patent: 2007/0015078 (2007-01-01), Suzuki et al.
patent: 2008/0063433 (2008-03-01), Miyamoto et al.
patent: 2008/0096121 (2008-04-01), Iwatsuki et al.
patent: 2008/0152393 (2008-06-01), Nagayama et al.
patent: 2008/0171274 (2008-07-01), Yagi et al.
patent: 2008/0213684 (2008-09-01), Nagayama et al.
patent: 2003-228240 (2003-08-01), None
patent: 2006-184891 (2006-07-01), None
patent: 3942139 (2007-04-01), None

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