Electrophotography – Image formation – Development
Reexamination Certificate
2009-02-24
2011-11-01
Ngo, Hoang (Department: 2852)
Electrophotography
Image formation
Development
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.
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Banner & Witcoff Ltd
Brother Kogyo Kabushiki Kaisha
Ngo Hoang
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