Image formation device and developer supplying device

Electrophotography – Image formation – Development

Reexamination Certificate

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Details

C399S291000

Reexamination Certificate

active

08050600

ABSTRACT:
There is provided an image formation device comprising an developer holding body having a holding surface parallel with a main scanning direction and holding thereon developer; an developer supplying unit to carry developer along a carrying path, wherein the developer supplying unit comprises first carrying electrodes arranged along the carrying path and serving to carry the developer in a carrying direction; second carrying electrodes arranged along the carrying path to face the first electrodes and serving to carry the developer in the carrying direction; a first voltage applying unit to apply a first carrying voltage having a first frequency to the first carrying electrodes; and a second voltage applying unit to apply, to the second carrying electrodes, a second carrying voltage having a second frequency different from the first frequency.

REFERENCES:
patent: 4598991 (1986-07-01), Hosoya et al.
patent: 5416568 (1995-05-01), Yoshiki et al.
patent: 7062204 (2006-06-01), Miyaguchi et al.
patent: 7200352 (2007-04-01), Sakai et al.
patent: 63-013069 (1988-01-01), None
patent: 05-019616 (1993-01-01), None
patent: 05-031146 (1993-02-01), None
patent: 2008-040045 (2008-02-01), None

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