发明名称 |
Image forming apparatus and power supply |
摘要 |
An image forming apparatus (401) includes a high-voltage power supply (202) having a piezoelectric transformer. The power supply includes a positive output voltage generation circuit and a negative output voltage generation circuit. Each of the positive output voltage generation circuit and the negative output voltage generation circuit includes a piezoelectric transformer (101), a piezoelectric transformer driving circuit, an output voltage detection circuit, and a drive control circuit for outputting a control signal for controlling the piezoelectric transformer driving circuit using a signal from the output voltage detection circuit and an output voltage setting signal for setting an output voltage. The positive output voltage generation circuit and the negative output voltage generation circuit are simultaneously turned on when the output polarity of the high-voltage power supply with a piezoelectric transformer is switched. |
申请公布号 |
EP1750179(A3) |
申请公布日期 |
2012.10.24 |
申请号 |
EP20060250213 |
申请日期 |
2006.01.16 |
申请人 |
CANON KABUSHIKI KAISHA |
发明人 |
SAITO, TOHRU;SUZUKI, MASAHIRO;NAGASAKI, OSAMU;SUZUKI, KOICHI |
分类号 |
G03G15/00;G03G15/16 |
主分类号 |
G03G15/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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