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    • 3. 发明授权
    • Potential measurement apparatus and image forming apparatus
    • 电位测量装置和图像形成装置
    • US07990159B2
    • 2011-08-02
    • US12521081
    • 2008-01-28
    • Kazuhiko KatoToshiyuki OgawaYoshitaka ZaitsuTakashi UshijimaKaoru NoguchiAtsushi KandoriFutoshi Hirose
    • Kazuhiko KatoToshiyuki OgawaYoshitaka ZaitsuTakashi UshijimaKaoru NoguchiAtsushi KandoriFutoshi Hirose
    • G01R27/26
    • G03G15/0266G01R29/12G03G15/5037
    • A potential measurement apparatus for measuring a surface potential of an object of measurement detects a change in electric charge induced at a detection electrode due to electrostatic induction by changing a distance between the detection electrode and the object of measurement in accordance with a predetermined period, using a neutral distance as reference, as a signal representing a change in electric current. The potential measurement apparatus includes a first detection unit for detecting a signal representing a fundamental period of the change in electric current and a signal representing a second harmonic period, a second detection unit for detecting information representing a capacitance between the detection electrode at the neutral distance and the object of measurement and an arithmetic unit for computationally obtaining information on the surface potential of the object of measurement, with eliminating an influence of the neutral distance and the capacitance, according to an outcome of detection of the first detection unit and an outcome of detection of the second detection unit.
    • 用于测量测量对象的表面电位的电位测量装置根据预定周期改变检测电极与测量对象之间的距离,通过使用静电感应来检测在检测电极处感应的电荷的变化,使用 作为参考的中性距离,作为表示电流变化的信号。 电位测量装置包括:第一检测单元,用于检测表示电流变化的基本周期的信号和表示二次谐波周期的信号;第二检测单元,用于检测表示中性距离处的检测电极之间的电容的信息 以及测量对象和运算单元,用于根据第一检测单元的检测结果和消除第一检测单元的检测结果消除中性距离和电容的影响来计算获得关于测量对象的表面电位的信息, 检测第二检测单元。
    • 4. 发明申请
    • POTENTIAL MEASUREMENT APPARATUS AND IMAGE FORMING APPARATUS
    • 潜在测量装置和图像形成装置
    • US20100019779A1
    • 2010-01-28
    • US12521081
    • 2008-01-28
    • Kazuhiko KatoToshiyuki OgawaYoshitaka ZaitsuTakashi UshijimaKaoru NoguchiAtsushi KandoriFutoshi Hirose
    • Kazuhiko KatoToshiyuki OgawaYoshitaka ZaitsuTakashi UshijimaKaoru NoguchiAtsushi KandoriFutoshi Hirose
    • G01R27/26G01R1/02
    • G03G15/0266G01R29/12G03G15/5037
    • A potential measurement apparatus for measuring a surface potential of an object of measurement detects a change in electric charge induced at a detection electrode due to electrostatic induction by changing a distance between the detection electrode and the object of measurement in accordance with a predetermined period, using a neutral distance as reference, as a signal representing a change in electric current. The potential measurement apparatus includes a first detection unit for detecting a signal representing a fundamental period of the change in electric current and a signal representing a second harmonic period, a second detection unit for detecting information representing a capacitance between the detection electrode at the neutral distance and the object of measurement and an arithmetic unit for computationally obtaining information on the surface potential of the object of measurement, with eliminating an influence of the neutral distance and the capacitance, according to an outcome of detection of the first detection unit and an outcome of detection of the second detection unit.
    • 用于测量测量对象的表面电位的电位测量装置根据预定周期改变检测电极与测量对象之间的距离,通过使用静电感应来检测在检测电极处感应的电荷的变化,使用 作为参考的中性距离,作为表示电流变化的信号。 电位测量装置包括:第一检测单元,用于检测表示电流变化的基本周期的信号和表示二次谐波周期的信号;第二检测单元,用于检测表示中性距离处的检测电极之间的电容的信息 以及测量对象和运算单元,用于根据第一检测单元的检测结果和消除第一检测单元的检测结果消除中性距离和电容的影响来计算获得关于测量对象的表面电位的信息, 检测第二检测单元。