Power supply device and method for image forming apparatus
First Claim
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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Abstract
Provided is a power supply device for an image forming apparatus, the power supply device including: a filter unit filtering alternating current (AC) power from an AC power source; and a converter generating a direct current (DC) power from the filtered AC power, wherein the filter unit includes: 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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Citations
25 Claims
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1. A power supply device for an image forming apparatus, the power supply device comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 23, 24, 25)
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13. A power supply method for an image forming apparatus, the method comprising:
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determining a power supply mode of a power supply device for an image forming apparatus; and switching connection between a capacitor and a discharge device, the capacitor being connected to an alternating current (AC) power source according to the determined power supply mode and the discharge device discharging electric charges accumulated in the capacitor. - View Dependent Claims (14, 15, 16)
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17. A power supply device comprising:
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a first power source; a filter unit filtering a first power supplied from the first power source; and a converter generating a second power from the filtered first power, wherein the filter unit comprises; a capacitor connected to the first 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, wherein the power supply device outputs the generated second power. - View Dependent Claims (18, 19, 20, 21, 22)
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Specification