发明名称 |
Electric potential measuring apparatus electrostatic capacitance measuring apparatus, electric potential measuring method, electrostatic capacitance measuring method, and image forming apparatus |
摘要 |
An electric potential measuring apparatus includes a detecting electrode, a modulator for changing an electrostatic capacitance between a measurement object and the detecting electrode by mechanical vibration, a charge detector for detecting the amount of charges electrostatically induced in the detecting electrode by the modulator, and a vibration generating-detecting unit for selectively performing either a vibration generating function of exciting the mechanical vibration, or a detecting function of detecting the condition of the mechanical vibration.
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申请公布号 |
US7372278(B2) |
申请公布日期 |
2008.05.13 |
申请号 |
US20060500926 |
申请日期 |
2006.08.09 |
申请人 |
CANON KABUSHIKI KAISHA |
发明人 |
KANDORI ATSUSHI;ICHIMURA YOSHIKATSU;USHIJIMA TAKASHI;ZAITSU YOSHITAKA;NOGUCHI KAORU |
分类号 |
G01R29/12;G03G15/00 |
主分类号 |
G01R29/12 |
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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