| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a high voltage power supply which can output a positive output (a plus bias) voltage and a negative output (a minus bias) voltage with good accuracy without high costs, and to provide an image forming device using the same. <P>SOLUTION: In the high voltage power supply, positive high DC voltage power supply units 3, 8, 10 and 11 for the feedback control of a changeable output voltage are connected serially and reversely in their polarities to negative high DC voltage power supply units 13, 18, 20 and 21 for the feedback control of the changeable output voltage, output voltage detection means 23, 24 common to the positive high DC voltage power supply units and the negative high DC voltage power supply units are inserted to output ends of the respective units, and the feedback control is applied to each positive and negative high voltage power supply unit by detection signals of the output voltage detection means. <P>COPYRIGHT: (C)2003,JPO |
