Image forming apparatus and power supply unit thereof, for controlling conditions of power supply units according to input voltage
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United States of America Patent
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Oct 27, 2015
Grant Date -
Jul 17, 2014
app pub date -
Jan 6, 2014
filing date -
Jan 17, 2013
priority date (Note) -
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status (Latency Note)
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Abstract
The power supply apparatus includes a first power supply unit for outputting a first voltage; a second power supply unit for outputting a second voltage different from the first voltage; a switch unit operating with the first voltage, which is disposed in a power supply path connecting to the second power supply unit, for supplying and shutting down power to the second power supply unit; a detection unit for detecting that a predetermined voltage or higher is supplied to the first power supply unit; and a control unit for controlling the switch unit to stop the output of the first voltage from the first power supply unit, when the detection unit detects that the predetermined voltage or higher is supplied to the first power supply unit.
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