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    Apparatus and method for determining the voltage breakdown and conductivity of particulate material
    1.
    发明授权
    Apparatus and method for determining the voltage breakdown and conductivity of particulate material 失效
    用于确定颗粒材料的电压击穿和电导率的装置和方法

    公开(公告)号：US5196803A

    公开(公告)日：1993-03-23

    申请号：US739034

    申请日：1991-08-01

    申请人： Michael Cellini, Jr. ,  Rudolph Forgensi ,  Edward J. Gutman ,  Kallis H. Mannik ,  Robert J. Turchetti ,  Donald H. Wood ,  Morris M. DeYoung, Jr.

    发明人： Michael Cellini, Jr. ,  Rudolph Forgensi ,  Edward J. Gutman ,  Kallis H. Mannik ,  Robert J. Turchetti ,  Donald H. Wood ,  Morris M. DeYoung, Jr.

    IPC分类号： G01N27/60 ,  G01R31/12 ,  G03G9/08

    CPC分类号： G01R31/1263

    摘要： An apparatus and method for determining both the breakdown voltage and the conductivity of a particulate material, such as a developer material, is provided. In a preferred embodiment, the apparatus for determining breakdown voltage comprises a breakdown cell for storing a preselected quantity of the particulate material and a voltage breakdown ("VB") autometer, the VB autometer being adapted to apply a first voltage across at least portions of the preselected quantity of the particulate material. The VB autometer is capable of progressively varying the magnitude of the first voltage. A measuring circuit, for measuring a second voltage, is coupled to the voltage breakdown cell. When the second voltage substantially equals a preselected reference voltage, the first voltage substantially equals the breakdown voltage of the particulate material.

    摘要翻译： 提供了用于确定诸如显影剂材料的颗粒材料的击穿电压和导电性的装置和方法。 在优选实施例中，用于确定击穿电压的装置包括用于存储预选量的颗粒材料和电压击穿（“VB”）自动机的击穿单元，所述VB自动计算器适于施加第一电压跨越至少部分 预选量的颗粒物料。 VB自动变速器能够逐渐改变第一电压的大小。 用于测量第二电压的测量电路耦合到电压击穿单元。 当第二电压基本上等于预选参考电压时，第一电压基本上等于颗粒材料的击穿电压。