Image forming apparatus

Details Image forming apparatus Image forming apparatus

2007-03-16

2009-06-09

Tran, Hoan H (Department: 2852)

Electrophotography

Image formation

Transfer

C399S121000

Reexamination Certificate

active

07546074

ABSTRACT:
An image forming apparatus includes at least one image forming unit, a primary transfer belt, and a secondary transferer. The image forming unit includes an image carrier and a primary transfer bias applicator. The secondary transferer includes a secondary transfer nip, a secondary transfer bias applicator, and a facing member facing the second transfer bias applicator. The secondary transfer bias applicator forms a secondary transfer electric field. The image forming apparatus further includes a bias applicator, a contact start site, and an electrode. The bias applicator applies a bias voltage having a same polarity as the normal charge polarity of the toner to the primary transfer belt, downstream of the primary transfer bias applicator. The recording medium starts to contact the toner image at the contact start site, located upstream of the secondary transfer nip, where the electrode forms an electric field.

REFERENCES:
patent: 6778794 (2004-08-01), Kayahara
patent: 6963715 (2005-11-01), Kanekura et al.
patent: 6985681 (2006-01-01), Taguchi et al.
patent: 7298997 (2007-11-01), Hamada et al.
patent: 2002/0034408 (2002-03-01), Motohashi
patent: 2006/0209151 (2006-09-01), Tamiya et al.
patent: 2007/0217832 (2007-09-01), Oyama et al.
patent: 1 096 334 (2001-05-01), None
patent: 0 825 496 (2002-09-01), None
patent: 1 109 078 (2004-12-01), None
patent: 08-166728 (1996-06-01), None
patent: 9-160395 (1997-06-01), None
patent: 2000-298408 (2000-10-01), None
patent: 2001-66911 (2001-03-01), None
patent: 2002-014550 (2002-01-01), None
patent: 2002-72709 (2002-03-01), None
patent: 2003-76159 (2003-03-01), None
patent: 2004-144916 (2004-05-01), None
U.S. Appl. No. 12/034,275, filed Feb. 20, 2008, Oyama, et al.

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4052445