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    • 1. 发明申请
    • DEVELOPING DEVICE, METHOD OF PRODUCING DEVELOPING DEVICE, AND IMAGE FORMING APPARATUS
    • 开发设备,生产开发设备的方法和图像形成设备
    • US20100247165A1
    • 2010-09-30
    • US12550627
    • 2009-08-31
    • Nobumasa FURUYAToshio HINO
    • Nobumasa FURUYAToshio HINO
    • G03G15/09
    • G03G15/0921
    • A developing device includes a magnet roll magnetized with plural magnetic poles including a main magnetic pole, a sleeve in a cylindrical shape which is arranged so as to be opposed to an image holding body, and a supporting frame that stably supports the magnet roll in a manner of restraining the magnet roll from rotating in the tangential direction, and supports the sleeve so as to rotate in the tangential direction around the magnet roll. The magnet roll is so arranged that the main magnetic pole is opposed to the image holding body, and a point on the peripheral face where magnetic flux density of the main magnetic pole in the tangential direction at a position along the peripheral face of the magnet roll is zero is set at a position predetermined with respect to a position where the magnet roll comes most closely to the image holding body.
    • 一种显影装置,包括:磁性磁体,其磁化有多个磁极,包括主磁极,圆筒状的套筒,其与图像保持体相对配置;以及支撑框架,其以 阻止磁辊沿切线方向旋转的方式,并且支撑套筒以围绕磁辊绕切线方向旋转。 磁辊被布置成使得主磁极与图像保持体相对,并且在磁体辊的周面的位置处的主磁极的切线方向上的磁通密度的周边面上的点 相对于磁辊最靠近图像保持体的位置预定的位置被设定为零。