AC high-voltage device, image forming apparatus, and AC...

Details AC high-voltage device, image forming apparatus, and AC... AC high-voltage device, image forming apparatus, and AC...

2006-10-27

2009-08-11

Grainger, Quana M (Department: 2852)

Electrophotography

Diagnostics

Power supply

C399S088000

Reexamination Certificate

active

07574152

ABSTRACT:
An AC high-voltage device includes a voltage controlling unit that controls an AC transforming unit. The AC transforming unit transforms supplied power to an AC high voltage. The voltage controlling unit includes a constant-voltage controlling unit and an turn-off unit. The constant-voltage controlling unit controls the AC transforming unit when an over-current does not occur in the AC high voltage. The turn-off unit turns off the AC transforming unit during a period in which an over-correct occurs. The constant-voltage controlling unit re-starts the AC transforming unit after the period.

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