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    • 5. 发明授权
    • Magnetic brush developing apparatus
    • 磁刷显影装置
    • US5424489A
    • 1995-06-13
    • US253610
    • 1994-06-03
    • Kunihiko SatoSachio SasakiAkira NagaharaShin ArakiHideaki Iwasaki
    • Kunihiko SatoSachio SasakiAkira NagaharaShin ArakiHideaki Iwasaki
    • G03G15/09
    • G03G15/09G03G15/0921
    • A magnetic brush developing apparatus includes a development container containing a developer. A magnet is stationarily located in the development container and has magnetic poles radially provided on a plurality of points. A rotational sleeve is arranged to cover the outer circumference of the magnet and is rotatably driven to carry the developer in the development container. A blade is arranged opposite to the rotational sleeve to restrict the amount of the developer which is carried by the rotational sleeve. To obtain a uniform image quality without unevenness among different developing apparatus and a wider range of assembling precision to thus facilitate the installment of the apparatus, at a position facing the developer restriction member, and in its vicinity, there is formed a uniform magnetic flux density section having a magnetic flux density whose vertical component is substantially uniform on the periphery of the rotational sleeve.
    • 磁刷显影装置包括含有显影剂的显影容器。 磁体固定地位于显影容器中,并且具有径向设置在多个点上的磁极。 旋转套筒布置成覆盖磁体的外周并被可旋转地驱动以将显影剂携带在显影容器中。 刀片与旋转套筒相对设置,以限制由旋转套筒承载的显影剂的量。 为了在不同的显影装置之间获得均匀的图像质量而不具有不均匀性,并且更宽的组装精度范围,从而便于装置的安装,在面向显影剂限制部件的位置处,并且在其附近形成均匀的磁通密度 截面具有在旋转套筒的周边上的垂直分量基本均匀的磁通密度。