Electrophotography – Image formation – Photoconductive member
Reexamination Certificate
2008-03-11
2008-03-11
Brase, Sandra L. (Department: 2852)
Electrophotography
Image formation
Photoconductive member
C399S302000, C399S303000, C399S308000
Reexamination Certificate
active
07343119
ABSTRACT:
A rotational speed of a first roller and a time required for a second roller to make one rotation are measured. A controller calculates an amplitude and a phase of fluctuation in a rotational speed in one rotation period of the first roller while the first roller is rotated by a predefined angle based on the speed and the time. The controller corrects measured speed of the first roller based on the amplitude and the phase, and controls a driving roller based on corrected speed.
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Koide Hiroshi
Matsuda Hiromichi
Brase Sandra L.
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
Ricoh & Company, Ltd.
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