| 摘要 |
<P>PROBLEM TO BE SOLVED: To allow driving a plurality of piezoelectric transformers with single control to perform boosting operation irrespective of a difference in individual input/output characteristics due to a variation in manufacturing of piezoelectric transformers, and safe and quick start-up of high-voltage output without overshoot. <P>SOLUTION: In a high-voltage power supply device 100 installed in an image forming apparatus, third calculation means in a high-voltage control unit 36 obtains a first division ratio by operating a piezoelectric transformer correction value calculated by second calculation means in the high-voltage control unit 36 and a third division ratio output from first calculation means in the high-voltage control unit 36, and demultiplying means in the high-voltage control unit 36 demultiplies a reference clock by the first division ratio to generate a control signal S36 for controlling drive of a piezoelectric transformer 120. <P>COPYRIGHT: (C)2013,JPO&INPIT |
