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    Development magnet roller, development device, process cartridge and image forming apparatus
    1.
    发明授权
    Development magnet roller, development device, process cartridge and image forming apparatus 有权
    开发磁辊，显影装置，处理盒和成像装置

    公开(公告)号：US07352983B2

    公开(公告)日：2008-04-01

    申请号：US10911582

    申请日：2004-08-05

    申请人： Noriyuki Kamiya ,  Takahiro Yasunaga ,  Tsuyoshi Imamura ,  Sumio Kamoi ,  Kyohta Koetsuka ,  Mieko Kakegawa

    发明人： Noriyuki Kamiya ,  Takahiro Yasunaga ,  Tsuyoshi Imamura ,  Sumio Kamoi ,  Kyohta Koetsuka ,  Mieko Kakegawa

    IPC分类号： G03G15/09

    CPC分类号： G03G15/0921 ,  G03G2215/0634

    摘要： A development magnet roller for use in a development roller of an electrophotographic image forming apparatus is provided. The development magnet roller has a development pole to form a magnetic field causing a developer born on a surface of the development roller including the development magnet roller to rise in a form of a series of ears in a development area of the image forming apparatus where the development roller opposes an image bearing member, and in a magnetic flux density distribution in a normal line direction of the development pole, a peak magnetic flux density is 120 mT or greater, a zero gauss region width is 70° or greater, and a half-value region width is 40° or smaller.

    摘要翻译： 提供一种用于电子照相成像设备的显影辊中的显影磁辊。 显影磁辊具有显影极以形成磁场，使得显影辊的显影辊的表面上出现的显影剂的显影磁极在图像形成装置的显影区域中以一系列的耳朵的形式上升， 显影辊与图像承载部件相对，并且在显影极的法线方向上的磁通密度分布中，峰值磁通密度为120mT以上，零高斯区域宽度为70°以上，半高 值区域宽度为40°以下。

    Development magnet roller, development device, process cartridge and image forming apparatus
    2.
    发明申请
    Development magnet roller, development device, process cartridge and image forming apparatus 有权
    开发磁辊，显影装置，处理盒和成像装置

    公开(公告)号：US20050063738A1

    公开(公告)日：2005-03-24

    申请号：US10911582

    申请日：2004-08-05

    申请人： Noriyuki Kamiya ,  Takahiro Yasunaga ,  Tsuyoshi Imamura ,  Sumio Kamoi ,  Kyohta Koetsuka ,  Mieko Kakegawa

    发明人： Noriyuki Kamiya ,  Takahiro Yasunaga ,  Tsuyoshi Imamura ,  Sumio Kamoi ,  Kyohta Koetsuka ,  Mieko Kakegawa

    IPC分类号： G03G15/09 ,  H01F7/02

    CPC分类号： G03G15/0921 ,  G03G2215/0634

    摘要： A development magnet roller for use in a development roller of an electrophotographic image forming apparatus is provided. The development magnet roller has a development pole to form a magnetic field causing a developer born on a surface of the development roller including the development magnet roller to rise in a form of a series of ears in a development area of the image forming apparatus where the development roller opposes an image bearing member, and in a magnetic flux density distribution in a normal line direction of the development pole, a peak magnetic flux density is 120 mT or greater, a zero gauss region width is 70° or greater, and a half-value region width is 40° or smaller.

    摘要翻译： 提供一种用于电子照相成像设备的显影辊中的显影磁辊。 显影磁辊具有显影极以形成磁场，使得显影辊的显影辊的表面上出现的显影剂的显影磁极在图像形成装置的显影区域中以一系列的耳朵的形式上升， 显影辊与图像承载部件相对，并且在显影极的法线方向上的磁通密度分布中，峰值磁通密度为120mT以上，零高斯区域宽度为70°以上，半高 值区域宽度为40°以下。

    Developing roller, developing apparatus, process cartridge, and image formation apparatus
    3.
    发明申请
    Developing roller, developing apparatus, process cartridge, and image formation apparatus 有权
    显影辊，显影装置，处理盒和成像装置

    公开(公告)号：US20050135843A1

    公开(公告)日：2005-06-23

    申请号：US10998547

    申请日：2004-11-30

    申请人： Mieko Kakegawa ,  Sumio Kamoi ,  Kyohta Koetsuka ,  Noriyuki Kamiya ,  Tsuyoshi Imamura

    发明人： Mieko Kakegawa ,  Sumio Kamoi ,  Kyohta Koetsuka ,  Noriyuki Kamiya ,  Tsuyoshi Imamura

    IPC分类号： F16C13/00 ,  G03G15/08 ,  G03G15/09 ,  H01F7/02

    CPC分类号： G03G15/0921

    摘要： A developing roller, comprising a developing sleeve consisting of a nonmagnetic material, and a magnet roll provided inside the developing sleeve and formed by dispersing a magnetic powder in a polymer compound, the portion corresponding to the developing pole of the magnet roll being equipped with a main-pole molded magnet whose magnetic force per unit of volume is greater than that of the magnet roll, wherein the magnetic pole adjacent to the developing pole of the magnet roll downstream in the developer conveyance direction has a peak magnetic flux density on the developing sleeve equal to or greater than that of the developing pole, and has a half value width, which is the width of the magnetic pole at which a magnetic flux density of one-half the peak magnetic flux density is exhibited, is greater than that of the developing pole.

    摘要翻译： 一种显影辊，包括由非磁性材料构成的显影套筒和设置在显影套筒内部并通过将磁粉分散在高分子化合物中而形成的磁辊，对应于磁辊的显影极的部分配备有 每单位体积的磁力大于磁体辊的磁力的主极模制磁体，其中与显影剂输送方向下游的磁体辊的显影极相邻的磁极在显影套筒上具有峰值磁通密度 等于或大于显影极的宽度，并且具有作为峰值磁通密度的二分之一的磁通密度的磁极的宽度的半值宽度大于 发展极点。

    Developing roller, developing apparatus, process cartridge, and image formation apparatus
    5.
    发明授权
    Developing roller, developing apparatus, process cartridge, and image formation apparatus 有权
    显影辊，显影装置，处理盒和成像装置

    公开(公告)号：US07203450B2

    公开(公告)日：2007-04-10

    申请号：US10998547

    申请日：2004-11-30

    申请人： Mieko Kakegawa ,  Sumio Kamoi ,  Kyohta Koetsuka ,  Noriyuki Kamiya ,  Tsuyoshi Imamura

    发明人： Mieko Kakegawa ,  Sumio Kamoi ,  Kyohta Koetsuka ,  Noriyuki Kamiya ,  Tsuyoshi Imamura

    IPC分类号： G03G15/09

    CPC分类号： G03G15/0921

    摘要： A developing roller includes a developing sleeve having a nonmagnetic material, and a magnet roll provided inside the developing sleeve and formed by dispersing a magnetic powder in a polymer compound. A portion of the magnet roll corresponding to a developing pole of the magnet roll is equipped with a main-pole molded magnet whose magnetic force per unit of volume is greater than that of the magnet roll. A magnetic pole adjacent to the developing pole of the magnet roll downstream in the developer conveyance direction has a peak magnetic flux density on the developing sleeve greater than that of the developing pole, and has a half value width, which is the width of the magnetic pole at which a magnetic flux density of one-half the peak magnetic flux density is exhibited, greater than that of the developing pole.

    摘要翻译： 显影辊包括具有非磁性材料的显影套筒和设置在显影套筒内部并通过将磁粉分散在高分子化合物中而形成的磁辊。 对应于磁辊的显影极的磁辊的一部分装备有主磁体模制磁体，其每单位体积的磁力大于磁辊的磁力。 与显影剂输送方向下游的磁辊的显影极相邻的磁极，显影套筒上的峰值磁通密度大于显影极的峰值磁通密度，并且具有半值宽度，即磁性的宽度 表现出峰值磁通密度的二分之一的磁通密度的极大于显影极的磁通密度。

    Developing device and an image forming apparatus including the same
    7.
    发明授权
    Developing device and an image forming apparatus including the same 有权
    显影装置和包括该显影装置的图像形成装置

    公开(公告)号：US07027761B2

    公开(公告)日：2006-04-11

    申请号：US10793281

    申请日：2004-03-05

    申请人： Kyohta Koetsuka ,  Tsuyoshi Imamura ,  Sumio Kamoi ,  Noriyuki Kamiya ,  Kenji Narita ,  Kenzo Tatsumi ,  Mieko Kakegawa

    发明人： Kyohta Koetsuka ,  Tsuyoshi Imamura ,  Sumio Kamoi ,  Noriyuki Kamiya ,  Kenji Narita ,  Kenzo Tatsumi ,  Mieko Kakegawa

    IPC分类号： G03G15/09

    CPC分类号： G03G15/0921

    摘要： A developer carrier for an SLIC developing system includes a developing sleeve and a magnetic roll having a plurality of magnetic poles. A narrow development nip is formed by narrowing the width of a development pole forming a magnet brush and by narrowing a developer rising region in a developing region where a flux density attenuation ratio of the development pole is 40% or more. A half-value width of the flux density of the development pole is 22° or less and the flux density variation rate is 4.0 mT/Deg or more in a circumferential direction in a part where the flux density in at least half of that of a downstream side of a developer carrying direction from a peak magnetic force position of the development pole is 90% or less.

    摘要翻译： 用于SLIC显影系统的显影剂载体包括具有多个磁极的显影套筒和磁辊。 通过缩小形成磁刷的显影极的宽度，并且通过使显影极的磁通密度衰减比为40％以上的显影区域中的显影剂上升区域变窄来形成窄的显影压区。 显影极的磁通密度的半值宽度为22度以下，磁通密度变化率在周向上为4.0mT /度以上，其中通量密度至少为a 从显影极的峰值磁力位置传送方向的显影剂的下游侧为90％以下。

    Developing device and process cartridge with predetermined magnetic force for an image forming apparatus
    8.
    发明授权
    Developing device and process cartridge with predetermined magnetic force for an image forming apparatus 有权
    用于图像形成装置的具有预定磁力的显影装置和处理盒

    公开(公告)号：US07127199B2

    公开(公告)日：2006-10-24

    申请号：US10440108

    申请日：2003-05-19

    申请人： Tsuyoshi Imamura ,  Sumio Kamio ,  Kyohta Koetsuka ,  Noriyuki Kamiya ,  Mieko Kakegawa

    发明人： Tsuyoshi Imamura ,  Sumio Kamio ,  Kyohta Koetsuka ,  Noriyuki Kamiya ,  Mieko Kakegawa

    IPC分类号： G03G15/08 ,  G03G15/09

    CPC分类号： G03G15/09

    摘要： A developing device for developing a latent image formed on an image carrier of the present invention includes a rotatable, nonmagnetic developer carrier, and a magnetic field generating member for generating a magnetic field in a developing zone where the developer carrier faces the image carrier. The magnetic field generated causes a developer deposited on the developer carrier to rise in the form of a magnet brush. A magnetic pole for development is located upstream of a position where the developer carrier and image carrier are closest to each other in a direction of rotation. A magnetic force, as measured on the surface of the developer carrier, increases from the position of the magnetic pole toward a position where the magnet brush finally leaves the image carrier.

    摘要翻译： 用于显影形成在本发明的图像载体上的潜像的显影装置包括可旋转的非磁性显影剂载体和用于在显影剂载体面向图像载体的显影区域中产生磁场的磁场产生部件。 产生的磁场导致沉积在显影剂载体上的显影剂以磁刷的形式上升。 用于显影的磁极位于显影剂载体和图像载体在旋转方向上彼此最接近的位置的上游。 在显影剂载体的表面上测量的磁力从磁极的位置朝向磁刷最终离开图像载体的位置增加。