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    Environmental controls for operation of an electrostatographic developer unit having multiple magnetic brush rolls
    2.
    发明申请
    Environmental controls for operation of an electrostatographic developer unit having multiple magnetic brush rolls 有权
    用于操作具有多个磁刷辊的静电显影单元的环境控制

    公开(公告)号：US20080025739A1

    公开(公告)日：2008-01-31

    申请号：US11496646

    申请日：2006-07-31

    申请人： Ajay Kumar ,  Hirotsugu Oba ,  Keith Allan Nau ,  David Antwone Reed ,  Cory Joseph Winters ,  Michael Donald Thompson ,  Allen T. Retzlaff ,  Jennifer Rea Wagner ,  Paul W. Morehouse ,  Rasin Moser ,  Song Feng Mo ,  Rachael L. McGrath ,  John Franklyn Knapp

    发明人： Ajay Kumar ,  Hirotsugu Oba ,  Keith Allan Nau ,  David Antwone Reed ,  Cory Joseph Winters ,  Michael Donald Thompson ,  Allen T. Retzlaff ,  Jennifer Rea Wagner ,  Paul W. Morehouse ,  Rasin Moser ,  Song Feng Mo ,  Rachael L. McGrath ,  John Franklyn Knapp

    IPC分类号： G03G15/00 ,  G03G15/06 ,  G03G15/09

    CPC分类号： G03G15/09 ,  G03G15/0848

    摘要： A development station in an electrostatographic imaging machine may be controlled to improve toner halftone dot development over a wide range of environmental conditions. The development station includes a developer housing for retaining a quantity of developer having semi-conductive carrier particles and toner particles, a first magnetic roll having a stationary core with at least one magnet and a sleeve having longitudinal grooves that rotates about the stationary core of the first magnetic roll to present developer on one side of the first magnetic roll to the photoreceptor, a second magnetic roll having a stationary core with at least one magnet and a sleeve having longitudinal grooves that rotates about the stationary core of the second magnetic roll to receive developer from the first magnetic roll and present developer on one side of the second magnetic roll to the photoreceptor, the second magnetic roll being vertically displaced from the first magnetic roll so that a gap exists between the first and the second magnetic rolls, an environmental sensor for generating an environmental condition signal, a variable voltage supply coupled to the first magnetic roll and the second magnetic roll, and a control circuit for adjusting an output level for the variable voltage supply in response to the environmental condition signal.

    摘要翻译： 可以控制静电成像机中的显影台，以在宽范围的环境条件下改善调色剂半色调点显影。 显影台包括用于保持一定量的具有半导体载体颗粒和调色剂颗粒的显影剂的显影剂外壳，具有至少一个磁体的固定磁芯的第一磁性辊和具有围绕静电磁芯旋转的纵向凹槽的套筒 第一磁性辊将第一磁性辊的一侧上的显影剂显影到感光体，第二磁性辊，具有至少一个磁体的固定磁芯和具有围绕第二磁性辊的固定磁芯旋转的纵向槽的套筒， 显影剂从第一磁性辊和第二磁性辊的一侧上的显影剂提供给感光体，第二磁性辊从第一磁性辊垂直移位，使得在第一和第二磁性辊之间存在间隙，环境传感器 用于产生环境条件信号，耦合到第一个的可变电压电源 磁辊和第二磁辊;以及控制电路，用于响应于环境条件信号调节可变电压电源的输出电平。