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Power supply device and method for image forming apparatus

  • US 20100166449A1
  • Filed: 03/05/2010
  • Published: 07/01/2010
  • Est. Priority Date: 09/03/2009
  • Status: Active Grant
First Claim
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1. A power supply device for an image forming apparatus, the power supply device comprising:

  • an alternating current (AC) power source;

    a filter unit filtering alternating current AC power from the AC power source; and

    a converter generating direct current (DC) power from the filtered AC power, wherein the filter unit comprises;

    a capacitor connected to the AC power source;

    a discharge device connected to the capacitor and discharging electric charges accumulated in the capacitor; and

    a switching device switching connection between the capacitor and the discharge device according to a power supply mode of the power supply device.

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