Developing device and image forming apparatus

Details Developing device and image forming apparatus Developing device and image forming apparatus

2011-03-29

2011-03-29

Gray, David M (Department: 2852)

Electrophotography

Image formation

Development

C399S053000, C399S236000

Reexamination Certificate

active

07917068

ABSTRACT:
A developing device is disposed facing an image bearing body that bears a latent image. The developing device includes a developer bearing body that bears a developer for developing the latent image. The developer includes mother particles and external additives. A liberation amount T (weight parts) of the external additives liberated from the mother particles with respect to 100 weight parts of the mother particles, a surface roughness Rz (m) of the developer bearing body, and a circumferential speed Vd (mm/s) of the developer bearing body satisfy the following relationships:in-line-formulae description="In-line Formulae" end="lead"?1.326×10−1≦T≦2.142×10−1(weight parts),in-line-formulae description="In-line Formulae" end="tail"?in-line-formulae description="In-line Formulae" end="lead"?7.1×10−6≦Rz≦15.0×10−6(m),in-line-formulae description="In-line Formulae" end="tail"?in-line-formulae description="In-line Formulae" end="lead"?161.5≦Vd≦189.2 (mm/s), andin-line-formulae description="In-line Formulae" end="tail"?in-line-formulae description="In-line Formulae" end="lead"?4.98×10−6≦(T×Rz/Vd)≦1.99×10−5(s).in-line-formulae description="In-line Formulae" end="tail"?

REFERENCES:
patent: 6507722 (2003-01-01), Okamura et al.
patent: 6686110 (2004-02-01), Kadota
patent: 2002-72544 (2002-03-01), None
patent: 2003-207933 (2003-07-01), None
patent: 2003-280330 (2003-10-01), None
patent: 2004-341122 (2004-12-01), None
patent: 2005-227356 (2005-08-01), None
patent: 2006-64773 (2006-03-01), None
patent: 2007-133024 (2007-05-01), None

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2647821