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US 2010/0135698 A1Published application
Power supply apparatus and image forming apparatus
AssigneeCanon Kabushiki Kaisha
InventorKenji Nemoto
Life of this patent
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Abstract
A power supply apparatus including a current regulation unit configured to regulate a surge current generated on a primary side of a piezoelectric transformer. The surge current is generated when the piezoelectric transformer including a piezoelectric element and a holding unit, which are connected to each other using a conductive rubber, is driven.
Claims11
A power supply apparatus comprising:
- a piezoelectric transformer;
- a holding unit that holds the piezoelectric transformer;
- a conductive rubber member that connects the holding unit to the piezoelectric transformer;
- a drive unit configured to supply a drive signal to the piezoelectric transformer;
- an output unit configured to output a high-voltage from the piezoelectric transformer according to the drive signal from the drive unit;
- and
- a current reduction unit configured to reduce a surge current generated when the drive unit is driven.
4 more elements
An image forming apparatus comprising:
- an image forming unit configured to form an image on recording material;
- and
- a power supply unit configured to output a high-voltage to the image forming unit,
- wherein the power supply unit includes:
- a piezoelectric transformer;
- a holding unit that holds the piezoelectric transformer,
- a conductive rubber member that connects the holding unit to the piezoelectric transformer;
- a drive unit configured to supply a drive signal to the piezoelectric transformer;
- an output unit configured to output a high-voltage from the piezoelectric transformer according to the drive signal from the drive unit;
- and
- a current reduction unit configured to reduce a surge current generated when the drive unit is driven.
8 more elements
Dependencies are inferred from the claim text.