Power supply apparatus for selectively changing power amplification method based on power mode of image foming device
AssigneeHewlett-Packard Development Company, L.P.
InventorsSung Kyu Choi, An Sik Jeong
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Abstract
A power supply apparatus to supply power to an image forming device, the power supply apparatus includes an amplifier to amplify an input AC power by a general amplification or a double amplification, a converter to receipt the input AC power amplified by the general amplification or the double amplification and output a DC power with a determined size. A controller control applying the general amplification or the double amplification to the converter, in response to an operating mode of the image forming device.
Claims15
A power supply apparatus to supply power to an image forming device, the power supply apparatus comprising:
- an amplifier circuit to amplify an input AC power by general amplification or a double amplification;
- a converter to receive the input AC power amplified by the general amplification or the double amplification and output a DC power with a determined size;
- and
- a controller to control applying the general amplification or the double amplification to the converter, in response to an operating mode of the image forming device.
An image forming device, comprising:
- a print engine to form an image;
- a processor to control the print engine to print the image;
- and
- a power supply apparatus to supply a first DC power to the processor and to supply a second DC power greater than the first power to the print engine,
- wherein the power supply apparatus is to generate at least one of the first DC power by a general amplification, or the second DC power by a double amplification with respect to input AC power when the operating mode of the image forming device is a normal mode, and to generate only the first DC power by the general amplification when the operating mode of the image forming device is a power saving mode.
Dependencies are inferred from the claim text.