Electrophotography – Control of electrophotography process – Control of fixing
Reexamination Certificate
2006-10-31
2006-10-31
Royer, William J. (Department: 2852)
Electrophotography
Control of electrophotography process
Control of fixing
C399S070000, C399S088000, C399S330000, C399S334000
Reexamination Certificate
active
07130555
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.
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Amita Akiyasu
Kato Yasuhisa
Kishi Kazuhito
Okamoto Masami
Takagi Hiromasa
Ricoh & Company, Ltd.
Royer William J.
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