Electrophotography – Control of electrophotography process – Control of fixing
Reexamination Certificate
2011-05-10
2011-05-10
Lee, Susan S (Department: 2884)
Electrophotography
Control of electrophotography process
Control of fixing
C399S013000, C399S069000, C399S088000
Reexamination Certificate
active
07941065
ABSTRACT:
An image forming apparatus according to the invention includes an auxiliary power supply configured to detachably mountable on the image forming apparatus, a fixing device including a main heater heated by a commercial power supply and an auxiliary heater heated by the auxiliary power supply, a detector that detects mounting and detachment of the auxiliary power supply, and a control unit that performs control to carry out, when the mounting of the auxiliary power supply is detected by the detector, continuous printing of sheets at printing speed higher than printing speed at the time when the auxiliary power supply is not mounted. According to the image forming apparatus according to the invention, the image forming apparatus is capable of operating without deteriorating power use efficiency during continuous printing at normal speed and, on the other hand, can secure stable fixing performance even when the speed of the continuous printing is increased.
REFERENCES:
patent: 7603048 (2009-10-01), Hasegawa
patent: 2007/0047989 (2007-03-01), Nakamura et al.
patent: 2004-070011 (2004-03-01), None
patent: 2004-319431 (2004-11-01), None
Kabushiki Kaisha Toshiba
Lee Susan S
Toshiba Tec Kabushiki Kaisha
Turocy & Watson LLP
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