Developing apparatus and method for regulating an AC bias...

Details Developing apparatus and method for regulating an AC bias... Developing apparatus and method for regulating an AC bias...

2006-05-09

2006-05-09

Grimley, Arthur T. (Department: 2852)

Electrophotography

Image formation

Development

C399S285000

Reexamination Certificate

active

07043181

ABSTRACT:
The electrophotographic image formation apparatus of the present invention adopts a developer roller, which is made of aluminum and has an aluminum oxide film of at least 5 μm in thickness formed on surface thereof. In the image formation apparatus, a gap between the developer roller and a photoreceptor drum3is set in a range of 150 to 300 μm. The image formation method of the present invention regulates a frequency of AC voltage in a non-development state to be higher than that in a development state, when an AC voltage is applied onto the developer roller to cause flight of toner from the developer roller to the photoreceptor, and selectively makes charged toner fly onto the electrostatic latent image for development. The present invention provides the effective development technique to prevent leakage of the applied voltage between the developer roller and the photoreceptor drum.

REFERENCES:
patent: 4334772 (1982-06-01), Suzuki
patent: 4380966 (1983-04-01), Isaka et al.
patent: 5999782 (1999-12-01), Iguchi et al.
patent: 6522854 (2003-02-01), Nishiuwatoko
patent: 2002/0018672 (2002-02-01), Ozawa et al.
patent: 2003/0049054 (2003-03-01), Ozawa et al.
patent: 2003/0202825 (2003-10-01), Yamada et al.
patent: 3-14192 (1991-02-01), None
patent: 6-67546 (1994-03-01), None
patent: 7-92804 (1995-04-01), None
patent: 2003-107898 (2003-04-01), None

Affiliated with

Also associated with

Rating

Developing apparatus and method for regulating an AC bias... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Developing apparatus and method for regulating an AC bias..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Developing apparatus and method for regulating an AC bias... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3641469