Electrophotography – Image formation – Transfer
Reexamination Certificate
2004-09-17
2009-12-22
Grainger, Quana M (Department: 2852)
Electrophotography
Image formation
Transfer
Reexamination Certificate
active
07636540
ABSTRACT:
A belt driving unit includes a rotary belt on which a scale is formed, a sensor that reads the scale, a normal-position control loop that detects an actual position of the rotary belt based on information of the scale read by the sensor, and corrects a position of the rotary belt based on the actual belt position detected, an abnormal-condition control loop for a situation when an abnormality occurs in the normal-position control loop, and a loop-switchover timing controller that controls a switchover timing of a control loop between the normal-position control loop and the abnormal-condition control loop.
REFERENCES:
patent: 4655579 (1987-04-01), Adachi et al.
patent: 4662739 (1987-05-01), Sakai et al.
patent: 4664501 (1987-05-01), Koizumi et al.
patent: 4690541 (1987-09-01), Sakai et al.
patent: 4690542 (1987-09-01), Furuta et al.
patent: 4717965 (1988-01-01), Mashiko et al.
patent: 4742371 (1988-05-01), Furuta et al.
patent: 4746950 (1988-05-01), Mamizuka et al.
patent: 4750017 (1988-06-01), Sakai
patent: 4796050 (1989-01-01), Furuta et al.
patent: 4922301 (1990-05-01), Katoh et al.
patent: 4933727 (1990-06-01), Mizuma et al.
patent: 5121170 (1992-06-01), Bannai et al.
patent: 5160969 (1992-11-01), Mizuma et al.
patent: 5321475 (1994-06-01), Horiuchi et al.
patent: 5545381 (1996-08-01), Iida et al.
patent: 5612766 (1997-03-01), Iida et al.
patent: 5631691 (1997-05-01), Furuta et al.
patent: 5740492 (1998-04-01), Deki et al.
patent: 5819143 (1998-10-01), Sakai et al.
patent: 5825398 (1998-10-01), Furuta et al.
patent: 5926670 (1999-07-01), Furuta et al.
patent: 5937232 (1999-08-01), Taguchi et al.
patent: 6029023 (2000-02-01), Munemori et al.
patent: 6057869 (2000-05-01), Kawaishi et al.
patent: RE37197 (2001-05-01), Iida et al.
patent: 6259219 (2001-07-01), Strauch et al.
patent: 6324358 (2001-11-01), Sahara
patent: 7440133 (2008-10-01), Yamada et al.
patent: 2003/0151775 (2003-08-01), Wang et al.
patent: 7-140856 (1995-06-01), None
patent: 10-232566 (1998-09-01), None
patent: 11-24507 (1999-01-01), None
patent: 11-136975 (1999-05-01), None
patent: 2002-91264 (2002-03-01), None
patent: 2004122588 (2004-04-01), None
patent: 2004157377 (2004-06-01), None
Computer Translation for applicant's cited reference JP10-232566A.
Grainger Quana M
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
Ricoh Company Limited
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