Electrophotography – Control of electrophotography process – Control of fixing
Reexamination Certificate
2008-05-13
2008-05-13
Royer, William J. (Department: 2852)
Electrophotography
Control of electrophotography process
Control of fixing
C399S088000, C399S328000, C399S330000, C399S334000
Reexamination Certificate
active
11582991
ABSTRACT:
A fixing unit thermally fixes a toner on a recording medium by a fixing member having a plurality of internal heaters and an outer peripheral surface, and a temperature sensor detects a surface temperature of the fixing member at a temperature detecting position. At least one first heater, of the heaters, receives power from a first power supply, and remaining second heaters receive power from a second power supply. One of the second heaters closest to the temperature detecting position is the same distance from the temperature detecting position as or is closer to the temperature detecting position than a first heater which is closest to the temperature detecting position.
REFERENCES:
patent: 4843214 (1989-06-01), Higashi et al.
patent: 5400123 (1995-03-01), Sato et al.
patent: 5481350 (1996-01-01), Yasui et al.
patent: 5701556 (1997-12-01), Sugimoto
patent: 5729798 (1998-03-01), Yasui et al.
patent: 5745247 (1998-04-01), Yasui et al.
patent: 5839032 (1998-11-01), Yasui et al.
patent: 5854465 (1998-12-01), Kishi et al.
patent: 5862436 (1999-01-01), Ishizawa et al.
patent: 5978618 (1999-11-01), Yamamoto et al.
patent: 6112047 (2000-08-01), Kato et al.
patent: 6134418 (2000-10-01), Kato et al.
patent: 6144832 (2000-11-01), Nimura et al.
patent: 6239864 (2001-05-01), Okamoto
patent: 6263185 (2001-07-01), Kato et al.
patent: 6394446 (2002-05-01), Okamoto
patent: 6411795 (2002-06-01), Okamoto
patent: 6542705 (2003-04-01), Fujita et al.
patent: 6813464 (2004-11-01), Amita et al.
patent: 6941088 (2005-09-01), Atsushi et al.
patent: 6987936 (2006-01-01), Satoh et al.
patent: 7010255 (2006-03-01), Yura et al.
patent: 7116923 (2006-10-01), Kishi et al.
patent: 7130555 (2006-10-01), Kishi et al.
patent: 7164870 (2007-01-01), Satoh
patent: 2005/0123315 (2005-06-01), Kishi et al.
patent: 2006/0039713 (2006-02-01), Kishi et al.
patent: 2006/0051112 (2006-03-01), Matsusaka et al.
patent: 2006/0051113 (2006-03-01), Kishi et al.
patent: 2006/0051120 (2006-03-01), Kishi et al.
patent: 2006/0051121 (2006-03-01), Matsusaka et al.
patent: 2006/0127118 (2006-06-01), Kishi et al.
patent: 2006/0133846 (2006-06-01), Okamoto
patent: 2006/0237446 (2006-10-01), Kishi et al.
patent: 2002-174988 (2002-06-01), None
U.S. Appl. No. 07/592,522, filed Oct. 4, 1990, Kato et al.
U.S. Appl. No. 08/487,641, filed Jun. 7, 1995, Yasui et al.
U.S. Appl. No. 09/409,587, filed Sep. 30, 1999, Kato et al.
Amita Akiyasu
Kato Yasuhisa
Kishi Kazuhito
Okamoto Masami
Takagi Hiromasa
Ricoh & Company, Ltd.
Royer William J.
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