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    • 4. 发明申请
    • MAGNETIC ROLLER, DEVELOPMENT DEVICE, AND IMAGE FORMING METHOD
    • 磁辊,开发装置和图像形成方法
    • US20090110441A1
    • 2009-04-30
    • US12262895
    • 2008-10-31
    • Fumihito MASUBUCHI
    • Fumihito MASUBUCHI
    • G03G15/09
    • G03G15/0921
    • A development device configured to develop a latent image with developer including toner and carrier includes a development roller configured to carry the developer. The development roller includes a stationary magnet-fixing member, a plurality of magnets fixed to an interior of the stationary magnet-fixing member to form a plurality of magnetic poles, and a cylindrical rotatable sleeve roller configured to revolve coaxially around the exterior of the magnet-fixing member. Magnetic force distribution of a portion of the plurality of magnetic poles is varied in an axial direction of the development roller at positions corresponding to an image forming area in the axial direction of the development roller, enabling the development device to transport and agitate the developer.
    • 构造成利用包括调色剂和载体的显影剂显影潜像的显影装置包括构造成承载显影剂的显影辊。 显影辊包括固定磁体固定构件,固定在固定磁体固定构件内部以形成多个磁极的多个磁体,以及圆筒状的可旋转套筒辊,其被配置成围绕磁体的外部同轴地旋转 固定成员。 多个磁极的一部分的磁力分布在显影辊的轴向上在与显影辊的轴向方向上的图像形成区域对应的位置处变化,使得显影装置能够输送和搅拌显影剂。