Electrophotography – Image formation – Photoconductive member
Reexamination Certificate
2008-05-22
2011-11-15
Gray, David (Department: 2852)
Electrophotography
Image formation
Photoconductive member
C399S162000, C399S299000, C399S302000, C399S303000, C356S138000, C356S142000, C356S145000, C356S153000, C700S229000
Reexamination Certificate
active
08059991
ABSTRACT:
A control unit calculates a difference between a displacement of a belt detected by an encoder and a predetermined target value, calculates a pulse frequency of a driving pulse signal based on a feedback control based on the difference and a feed-forward control based on a reference driving pulse frequency, sets a control range of the feedback control to be equal to or smaller than a frequency of one rotation of a driven roller, and controls driving of a pulse motor such that the belt moves at a constant speed.
REFERENCES:
patent: 5312033 (1994-05-01), Walton et al.
patent: 6941096 (2005-09-01), Matsuda et al.
patent: 6949896 (2005-09-01), Andoh et al.
patent: 6952557 (2005-10-01), Kobayashi
patent: 6999173 (2006-02-01), Kleinfeld et al.
patent: 7009614 (2006-03-01), Emmot et al.
patent: 7110700 (2006-09-01), Andoh et al.
patent: 7263314 (2007-08-01), Ueda et al.
patent: 7376375 (2008-05-01), Kobayashi et al.
patent: 7386262 (2008-06-01), Okamura et al.
patent: 2003/0223786 (2003-12-01), Kamoshita et al.
patent: 2005/0099153 (2005-05-01), Komatsu et al.
patent: 2006/0110189 (2006-05-01), Matsuda et al.
patent: 2006/0133873 (2006-06-01), Andoh et al.
patent: 2007/0189815 (2007-08-01), Andoh et al.
patent: 2008/0232880 (2008-09-01), Noguchi et al.
patent: 62-242965 (1987-10-01), None
patent: 10-78734 (1998-03-01), None
patent: 2754582 (1998-03-01), None
patent: 2000-47547 (2000-02-01), None
patent: 2001-66909 (2001-03-01), None
patent: 2006-171594 (2006-06-01), None
patent: 3965357 (2007-06-01), None
Andoh Toshiyuki
Hirose Yuichi
Masuda Noritaka
Matsuda Hiromichi
Tao Satoru
Gray David
Gray Francis
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
Ricoh Company Limited
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