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    • 5. 发明授权
    • Xerographic developer unit having multiple magnetic brush rolls rotating with the photoreceptor
    • 具有与感光体一起旋转的多个磁刷辊的静电印刷显影单元
    • US07406279B2
    • 2008-07-29
    • US11262576
    • 2005-10-31
    • James M. ChappellPatrick J. HoweMichael D. Thompson
    • James M. ChappellPatrick J. HoweMichael D. Thompson
    • G03G15/09
    • G03G15/0935
    • A development subsystem is used to develop toner particles transported by semiconductive carrier particles. The development subsystem includes a developer housing for retaining a quantity of developer having semiconductive carrier particles and toner particles, a first magnetic roll having a stationary core with at least one magnet and a sleeve that rotates about the stationary core of the first magnetic roll, a second magnetic roll having a stationary core with at least one magnet and a sleeve that rotates about the stationary core of the second magnetic roll, a motor coupled to the first and the second magnetic rolls to drive the rotating sleeves of the first and the second magnetic rolls at different velocities relative to a velocity for a photoreceptor that rotates in proximity to the first and second magnetic rolls, the first and second magnetic rolls being driven in a direction that is with the direction of rotation of the photoreceptor so that the first and the second magnetic rolls carry semiconductive carrier particles and toner particles through a development zone formed by the first and the second magnetic rolls that is proximate to the photoreceptor.
    • 开发子系统用于开发通过半导体载体颗粒传输的调色剂颗粒。 开发子系统包括用于保持一定数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围绕第一磁性辊的固定磁芯旋转的套筒, 第二磁辊具有带有至少一个磁体的固定磁芯和围绕第二磁性辊的固定磁芯旋转的套筒,耦合到第一和第二磁性辊的电动机,以驱动第一和第二磁性的旋转套筒 以相对于第一和第二磁辊附近旋转的感光体的速度的不同速度滚动,第一和第二磁辊沿与感光体的旋转方向一致的方向驱动,使得第一和第二磁辊 第二磁辊通过由冷杉形成的开发区承载半导体载体颗粒和调色剂颗粒 st和靠近感光体的第二磁辊。