Developer bearing body and image forming apparatus

Details Developer bearing body and image forming apparatus Developer bearing body and image forming apparatus

2007-03-13

2007-03-13

Ngo, Hoang (Department: 2852)

Electrophotography

Image formation

Development

Reexamination Certificate

active

11094716

ABSTRACT:
In an electrophotographic image forming apparatus, a contact-type developing roller contacts a photosensitive drum, a developing blade, a supply roller or the like. If the surface of the developing roller is excessively hard, there is a possibility that a pressure applied between the developing roller and the photosensitive drum or the like may increase, and may cause a filming, i.e., a phenomena in which a toner is degraded and welded to the surface of the developing roller. The filming can be prevented when a JIS-A hardness HA(degree) of a resilient layer of the developing roller and a dynamic hardness HS(mN/μm2) of a surface layer of the developing roller satisfy the following relationship: HA×HS<15.

REFERENCES:
patent: 4958193 (1990-09-01), Nojima et al.
patent: 5741616 (1998-04-01), Hirano et al.
patent: 6714754 (2004-03-01), Ozeki et al.
patent: 11-295979 (1999-10-01), None

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3737668