Developing apparatus

Details Developing apparatus Developing apparatus

2006-06-06

2006-06-06

Ngo, Hoang (Department: 2852)

Electrophotography

Image formation

Development

C399S272000

Reexamination Certificate

active

07058344

ABSTRACT:
A developing apparatus supplies a developer from a developing roller to an image-bearing body that bears an electrostatic latent image thereon. A toner-supplying roller is rotatably supported to oppose the developing roller. A rotating body has recesses formed in its surface, opposing the developer-bearing member. The toner-supplying roller and the rotating body rotate in opposite directions and at different circumferential speeds. The rotating body is formed of a foamed material having cells formed in and open to a surface of the rotating body, the cells having a cell size in the range of 10 to 40 cells/inch. The toner-supplying roller and the rotating body rotate at circumferential speeds such that a ratio between the circumferential speeds is in the range of 1 to 2.5. The rotating body and toner-supplying roller may have a diameter that varies along the length.

REFERENCES:
patent: 5809386 (1998-09-01), Iwata
patent: 6026265 (2000-02-01), Kinoshita et al.
patent: 6149564 (2000-11-01), Nozawa et al.
patent: 6196958 (2001-03-01), Shiraki et al.
patent: 2003/0210931 (2003-11-01), Haraguchi et al.
patent: 07-160107 (1995-06-01), None
patent: 11-015246 (1999-01-01), None
patent: 2000194191 (2000-07-01), None

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