Electrophotography – Machine operation – Having power supply
Reexamination Certificate
2006-09-18
2010-11-23
Gray, David M (Department: 2852)
Electrophotography
Machine operation
Having power supply
C399S037000, C399S070000
Reexamination Certificate
active
07840153
ABSTRACT:
An image forming apparatus having (1) a main power supply unit (PSU), which converts an AC power source into an AC power and a first DC power, provides the AC power to a fusing unit, and provides the first DC power to a plurality of DC-powered units in the image forming apparatus, (2) a supplemental power supply unit, which accumulates the AC power source and provides a second DC power to the plurality of DC-powered units for a predetermined period, and (3) a controller, which increases or decreases the AC power to be provided to the fusing unit and selects the DC power source from the main PSU and the supplemental PSU by detecting that the supplemental PSU can provide the DC power to the plurality of DC-powered units or not. When the supplemental power supply unit can provide DC power to the Plurality of DC-powered units, the controller increases the AC power from the main power supply unit to the fusing unit and shortens the recovery time.
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Kimura Yoshihisa
Kishi Kazuhito
Muraishi Norio
Sato Naoki
Semma Toshitaka
Bonnette Rodney
Gray David M
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
Ricoh Company Limited
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