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1. 发明授权

US06788178B2 Magnet roller and process for preparing the same 有权
标题翻译：磁铁辊及其制备方法
公开(公告)号：US06788178B2
公开(公告)日：2004-09-07
申请号：US10464389
申请日：2003-06-18
申请人： Shingo Inase , Masami Hosokawa , Osamu Oshima , Masaharu Iwai
发明人： Shingo Inase , Masami Hosokawa , Osamu Oshima , Masaharu Iwai
IPC分类号： H01F702
CPC分类号： H01F41/0253 , Y10T29/49075 , Y10T29/49549
摘要： A process for preparing a magnet roller comprising a plurality of bar-like magnet pieces in a high working efficiency and in an improved adhesion accuracy, which comprises the steps of regulating the bonding position of at least two magnet pieces by their outer peripheral surfaces and their end surfaces, applying an adhesive from the inner surface side of the magnet pieces to the adhesion faces of the magnet pieces for bonding one magnet piece to another magnet piece to form a magnet block, and bonding and fixing the magnet block to a shaft. At least one of the adhesion faces which are in contact with each other may have a plurality of grooves to facilitate penetration of the adhesive into the interface of adjacent two magnet pieces.
摘要翻译：一种用于制备具有高工作效率和改进的粘合精度的多个棒状磁体片的磁辊的方法，其包括以下步骤：通过其外周表面调节至少两个磁体片的结合位置，从磁体片的内表面侧将粘合剂施加到磁片的粘合面上，用于将一个磁体片接合到另一个磁体片上，形成磁体块，并将磁体块粘结固定在轴上。彼此接触的粘合面中的至少一个可以具有多个槽，以便于粘合剂渗透到相邻的两个磁体片的界面中。

2. 发明授权

US06703915B1 Magnet roller 有权
标题翻译：磁铁辊
公开(公告)号：US06703915B1
公开(公告)日：2004-03-09
申请号：US10169626
申请日：2002-07-02
申请人： Masaharu Iwai
发明人： Masaharu Iwai
IPC分类号： H01F702
CPC分类号： B82Y25/00 , H01F1/0579 , H01F7/0268
摘要： To provide a magnet roller having a high magnetic force at low cost even if magnetized in a relatively weak magnetic field, having a magnetic force (800 G or higher) sufficient for development even if a plurality of magnetic poles are provided in a main magnetic pole part, and having good resistance to oxidation. The magnet roller (1) of the present invention includes a body part (3) and a shaft part (2) supporting both ends of (3). A plurality of magnetic poles are provided in a magnetized manner in an outer peripheral face of (3), made up of a rare-earth bond magnet made of rare-earth magnetic powder having a composite phase of a hard magnetic phase and a soft magnetic phase both magnetically exchange-interacting with each other and having a coercive force (iHc) of 5 KOe or lower and a residual magnetic flux density (Br) of 5 KG or higher.
摘要翻译：即使在比较弱的磁场中磁化的情况下也能以低成本提供具有高磁力的磁力辊，具有足以显影的磁力（800G以上），即使在主磁极中设置多个磁极部分，并且具有良好的耐氧化性。本发明的磁性辊（1）包括主体部（3）和支撑（3）的两端的轴部（2）。在由（3）的外周面以磁化方式设置的多个磁极由具有硬磁相和软磁性复合相的稀土类磁粉制成的稀土类磁铁构成相位彼此磁交换相互作用并具有5KOe以下的矫顽力（iHc）和5KG以上的残留磁通密度（Br）。

3. 发明申请

US20080246572A1 Magnet Roller 审中-公开
标题翻译：磁铁滚筒
公开(公告)号：US20080246572A1
公开(公告)日：2008-10-09
申请号：US11569997
申请日：2005-05-23
申请人： Masaharu Iwai
发明人： Masaharu Iwai
IPC分类号： H01F7/02
CPC分类号： G03G15/0921 , H01F1/113 , H01F7/0268 , H01F41/0266 , H01F41/028
摘要： In a magnet roller of the magnet piece bonding type, the main pole has a high magnetic flux density and the other pole has an asymmetric magnetic flux density pattern with respect to the magnetic flux density peak position. The magnet piece of the main pole is formed by injection molding while performing pole-anisotropic orientation of magnetic particles of the magnet piece. The magnet piece of the other pole is formed by extrusion molding while orientating the magnetic particles in a certain direction inclined by 5 degrees of more with respect to the center line of the radial direction of the magnet piece. The magnet roller is formed by combining the magnet piece of the main pole and the magnet piece of the other pole.
摘要翻译：在磁片接合型的磁辊中，主极具有高磁通密度，另一极相对于磁通密度峰值位置具有非对称磁通密度图案。主极的磁片通过注射成型而形成，同时执行磁体的磁性颗粒的极各向异性取向。另一极的磁片通过挤出成型而形成，同时使磁性颗粒沿相对于磁体的径向方向的中心线倾斜5度的一定方向。磁辊是通过将主极的磁体片和另一极的磁体片组合而形成的。

4. 发明授权

US06762665B1 Magnet roller 有权
标题翻译：磁铁辊
公开(公告)号：US06762665B1
公开(公告)日：2004-07-13
申请号：US09868907
申请日：2001-07-09
申请人： Masaharu Iwai , Masami Hosokawa
发明人： Masaharu Iwai , Masami Hosokawa
IPC分类号： H01F702
CPC分类号： G03G15/0921 , H01F7/0268
摘要： The object is to provide a magnet roller whereby picture quality can be improved by raising the magnetic flux density of the specified magnetic pole and/or other magnetic poles, and wherein this magnetic pole pattern can be achieved with low cost. In a magnet roller (10) according to the invention that achieves this object, a plurality of magnet pieces (12, 14, 16, 18) are mounted at the periphery of a shaft (20) by joining at joining faces and peaks (32a, 34a, 36a, 38a) of magnetic poles (32, 34, 36, 38) are generated on the lines of extension of joining faces (13, 15, 17, 19) by setting the directions of orientation magnetization (22, 24, 26, 28) of adjacent magnet pieces (12, 14, 16, 18) facing the joining faces (13, 15, 17, 19), the respective joining faces (13, 15, 17, 19) of the plurality of magnet pieces (20) being provided along the roller radial directions.
摘要翻译：本发明的目的是提供一种磁辊，通过提高特定磁极和/或其它磁极的磁通密度可以提高图像质量，并且可以以低成本实现该磁极图案。在实现该目的的根据本发明的磁性辊（10）中，通过在接合面和峰（32a）处接合而在轴（20）的周围安装多个磁体片（12,14,16,18）通过设定取向磁化方向（22,24,38,39），在连接面（13,15,17,19）的延伸线上产生磁极（32,34,36,38）相对的磁体片（12,14,16,18）面对着接合面（13,15,17,19）的多个磁体片的各个接合面（13,15,17,19）（20）沿着辊径向设置。

5. 发明授权

US5158852A Electrophotographic development process 失效
标题翻译：电子发展进程
公开(公告)号：US5158852A
公开(公告)日：1992-10-27
申请号：US615947
申请日：1990-11-20
申请人： Yoshio Sakata , Masaharu Iwai , Yasushi Kakehashi
发明人： Yoshio Sakata , Masaharu Iwai , Yasushi Kakehashi
IPC分类号： G03G9/087 , G03G9/10 , G03G9/107 , G03G9/113 , G03G13/09 , G03G15/08 , G03G15/09
CPC分类号： G03G13/09 , G03G9/10 , G03G2215/0609
摘要： An electrophotographic development process is disclosed, in which a visible toner image is fixed after it is transferred onto transfer members, the visible toner image being formed by a development device equipped with a photosensitive substance for forming a latent image and a visible image, a magnetic field source device, arranged in the vicinity of the photosensitive substance, having a movable member for conveying a developer on the surface and forming magnetic brush, a developement container supporting the magnetic field source device and a developer regulating plate, the improvement wherein the developer is a mixture of carriers and toner, and wherein the carrier are at least one of spherical, substantially spherical, and flake-like shapes and a mixture of at least one kinds of carriers ranging from 30 to 150 .mu.m in average grain size. According to the present invention, motor load is reduced by torque drop, a stirring device and its accessory parts are omitted, and as a result, the development device can be made compact and less costly.

6. 发明授权

US5434351A Developing device having developing cylinder with weak magnetic pole and adjacent strong magnetic poles 失效
标题翻译：显影装置具有弱磁极和相邻强磁极的显影圆筒
公开(公告)号：US5434351A
公开(公告)日：1995-07-18
申请号：US186882
申请日：1994-01-26
申请人： Masaharu Iwai , Yasushi Kakehashi
发明人： Masaharu Iwai , Yasushi Kakehashi
IPC分类号： G03G15/09
CPC分类号： G03G15/0921 , G03G15/09
摘要： A developing cylinder used in an electrophotographic developing device is improved in the efficiency of separation of a developer on its surface. A magnetic working force functioning to separate the developer from a sleeve surface is designed on the basis of a magnetic attraction force which results from a vector composite force consisting of a radial magnetic flux density and a tangential magnetic flux density on the sleeve surface and actually controls the behavior of the developer. The magnetic working force acting on a separation zone of weak magnetic flux density is made to act as a magnetic repulsion force functioning to separate the developer from the sleeve surface. The magnetic working force acting on a given area inclusive of a spot proximate to a photoconductor in a development zone is made to act as the magnetic repulsion force functioning to separate the developer from the sleeve surface. A magnet having a weak magnetic flux density pole is disposed in a developing zone and two strong magnetic flux density poles are disposed adjacent the weak magnetic flux density pole.
摘要翻译：用于电子照相显影装置的显影筒提高了其表面上显影剂的分离效率。基于由套筒表面上的径向磁通密度和切向磁通密度组成的矢量复合力产生的磁吸引力来设计用于将显影剂与套筒表面分离的磁力作用力，并且实际控制开发者的行为。作用在具有弱磁通密度的分离区的磁力作用力被用作用于将显影剂与套筒表面分离的磁排斥力。作用在包括显影区域中的光电导体附近的点的给定区域上的磁力作用力被用作使显影剂与套筒表面分离的磁排斥力。具有弱磁通密度极的磁体设置在显影区域中，并且两个强磁通密度磁极设置在弱磁通密度极附近。

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