发明名称 |
Electric potential measuring device using oscillating device, image forming apparatus, and electric potential measuring method |
摘要 |
To provide an electric potential measuring device which is useful in realizing size reduction, high sensitivity, and high reliability. The electric potential measuring device includes: an oscillating device which includes torsion springs, and an oscillating body axially supported by the springs to oscillate; and signal detecting unit which is located on a surface of the oscillating body. A capacitance between the detection electrode and a surface of an electric potential measuring object is varied by varying a distance therebetween by the oscillating device, whereby an output signal appearing on the detection electrode is detected.
|
申请公布号 |
US7460803(B2) |
申请公布日期 |
2008.12.02 |
申请号 |
US20070684550 |
申请日期 |
2007.03.09 |
申请人 |
CANON KABUSHIKI KAISHA |
发明人 |
ICHIMURA YOSHIKATSU;SHIMADA YASUHIRO;MIZOGUCHI YASUSHI;ZAITSU YOSHITAKA |
分类号 |
G03G15/00;G01R29/12;G03G21/00 |
主分类号 |
G03G15/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|