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11. 发明授权

US5396026A Magnetic brush developing apparatus 失效
标题翻译：磁刷显影装置
公开(公告)号：US5396026A
公开(公告)日：1995-03-07
申请号：US127594
申请日：1993-09-28
申请人： Kunihiko Sato , Sachio Sasaki , Akira Nagahara , Shin Araki , Hideaki Iwasaki , Kenji Fuke , Futoshi Okabayashi , Takamasa Araki
发明人： Kunihiko Sato , Sachio Sasaki , Akira Nagahara , Shin Araki , Hideaki Iwasaki , Kenji Fuke , Futoshi Okabayashi , Takamasa Araki
IPC分类号： G03G15/09
CPC分类号： G03G15/09 , G03G15/0921
摘要： A magnetic brush developing apparatus, comprising: a development container (102) for containing a developer; a magnet (122) stationarily located in the development container and having magnetic poles radially provided on a plurality of points; a rotational sleeve (121) arranged to cover the outer circumference of the magnet and rotatably driven to carry the developer in the development container to an image carrying body (131); and a blade (123) arranged opposite to the sleeve to restrict the amount of the developer which is carried by the sleeve. Two of the magnetic poles are a developing magnetic pole (Pd) facing opposite to the image carrying body (131) and a developer transfer magnetic pole (Pt) located between the developing magnetic pole (Pd) and the blade (123). A magnetic brush of the developer formed on the sleeve (121) by the developer carrying magnetic pole (Pt) has a magnetic flux density. A width or angle of a region where a radial component of the magnetic flux density exceeds over a half of a maximum value thereof, i.e., a half value width, is determined in such a manner that the developer is prevented from flying away from the magnetic brush.
摘要翻译：一种磁刷显影装置，包括：用于容纳显影剂的显影容器（102）; 固定地位于显影容器中并具有径向设置在多个点上的磁极的磁体（122）; 旋转套筒（121），被布置成覆盖所述磁体的外周并被可旋转地驱动以将显影容器中的显影剂运送到图像承载体（131）; 以及与所述套筒相对设置的用于限制由所述套筒承载的显影剂的量的刀片（123）。两个磁极是与图像承载体（131）相对的显影磁极（Pd）和位于显影磁极（Pd）和叶片（123）之间的显影剂转移磁极（Pt）。由承载磁极（Pt）的显影剂在套筒（121）上形成的显影剂的磁刷具有磁通密度。磁通密度的径向分量超过其最大值的一半的区域（即，半值宽度）的宽度或角度被确定为使得显影剂不被远离磁体刷。

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