Developing device for an image forming apparatus

Details Developing device for an image forming apparatus Developing device for an image forming apparatus

1997-03-04

1998-12-01

Martin, Roland

Electrophotography

Image formation

Development

4301066, 430111, G03G 1508, G03G 1509

Patent

active

058451838

ABSTRACT:
In an image forming apparatus, a developing device operable with toner or single component type developer has a hard first developing roller and a soft second developing roller. Fine magnetic N-S poles are formed on the periphery of the first roller. The second roller conveys the toner, electrostatically transferred thereto from the first roller, to an image carrier. The device frees a toner image from deterioration due to toner particles charged to a polarity opposite to an expected polarity. The toner forms a uniform thin layer on the first roller and is uniformly charged. Toner for use with this type of developing device is also disclosed.

REFERENCES:
patent: 4495268 (1985-01-01), Miyakawa et al.
patent: 4525447 (1985-06-01), Tanaka et al.
patent: 5424814 (1995-06-01), Suzuki et al.
patent: 5473417 (1995-12-01), Hirano et al.
patent: 5532804 (1996-07-01), Hirata et al.
patent: 5625441 (1997-04-01), Sugiyama et al.
Patent Abstracts of Japan, vol. 9, No. 292 (P-406), Nov. 19, 1985, JP 60-130752, Jul. 12, 1985.

Affiliated with

Also associated with

Rating

Developing device for an image forming apparatus 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 device for an image forming apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Developing device for an image forming apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2403003