公开(公告)号：US07060191B2

公开(公告)日：2006-06-13

申请号：US10168204

申请日：2001-10-16

Applicant: Atsushi Iwase

Inventor： Atsushi Iwase

IPC: B32B1/08

CPC classification number: G03G15/0928 ,  G03G2215/0863 ,  H01F7/0268 ,  Y10T29/49563 ,  Y10T29/49995

Abstract: A magnet roller includes a rotary sleeve having a given systematic pattern on the outer surface of the sleeve and a magnet provided in the sleeve. This structure transfers toner uniformly along the outer surface of the sleeve. A printer, for instance, employing this magnet roller can print a fine copy.

公开(公告)号：US06897752B2

公开(公告)日：2005-05-24

申请号：US09915133

申请日：2001-07-25

Applicant: Michael John Dixon ,  Robert Edward Hackett ,  Joe Leroy McGuire

Inventor： Michael John Dixon ,  Robert Edward Hackett ,  Joe Leroy McGuire

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

CPC classification number: H01F7/0268 ,  G03G15/0921

Abstract: A magnetic roller for electrophotography comprises a foamed resin magnetic material. A method of producing a magnetic roller comprises the steps of providing magnetic filler, a resin binder and a foaming agent in a closed mold; activating the foaming agent in the closed mold; and removing the resulting formed roller from the mold.

Abstract translation: 电子照相用磁辊包括发泡树脂磁性材料。 制造磁性辊的方法包括以下步骤：在闭合的模具中提供磁性填料，树脂粘合剂和发泡剂; 活化封闭模具中的发泡剂; 并从模具中取出所形成的辊。

公开(公告)号：US20050076973A1

公开(公告)日：2005-04-14

申请号：US10463399

申请日：2003-06-18

Applicant: Masahiro Masuzawa ,  Keiko Kikuchi

Inventor： Masahiro Masuzawa ,  Keiko Kikuchi

IPC: H01F7/02 ,  H01F41/02 ,  H02K15/03 ,  H01F27/24 ,  H01F1/03

CPC classification number: H02K15/03 ,  H01F7/0268 ,  H01F41/028

Abstract: A polar-anisotropic ring magnet having magnetization directions in alignment with its normal line at each magnetic pole position and in alignment with its tangential line at each middle position between adjacent magnetic poles, and having a substantially constant angle difference in a magnetization direction between adjacent elements, the elements being obtained by division at an equal angle pitch between the magnetic pole position and the middle position adjacent to the magnetic pole position.

Abstract translation: 一种极性各向异性环形磁铁，其磁化方向与其每个磁极位置处的法线对准，并且与相邻磁极之间的每个中间位置处的切线对准，并且在相邻元件之间的磁化方向上具有基本恒定的角度差 通过在磁极位置和与磁极位置相邻的中间位置之间以相等的角度间距进行划分得到的元件。

公开(公告)号：US06762665B1

公开(公告)日：2004-07-13

申请号：US09868907

申请日：2001-07-09

Applicant: Masaharu Iwai ,  Masami Hosokawa

Inventor： Masaharu Iwai ,  Masami Hosokawa

IPC: H01F702

CPC classification number: G03G15/0921 ,  H01F7/0268

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US20030218525A1

公开(公告)日：2003-11-27

申请号：US10334014

申请日：2002-12-30

Inventor： Toshiaki Sugawara ,  Shinichi Matsumura ,  Kazuto Kawamata ,  Eiji Ohta

IPC: H01F007/20

CPC classification number: H01F7/0268 ,  H01F13/003

Abstract: A method of magnetizing a magnetic sheet, said method able to magnetize a roll sheet conveniently at a high speed and stably including the steps of bringing a cylindrical permanent magnet having N-poles and S-poles multipolar-magnetized alternately along its circumference into contact with one surface of a long magnetic sticking sheet having an axis of easy magnetization oriented in a sheet longitudinal direction so that the sheet longitudinal direction is orthogonal to a shaft of the permanent magnet and multipolar-magnetizing the magnetic sticking sheet along the axis of easy magnetization by rotating the cylindrical permanent magnet due to the magnetic sticking sheet being rolled up, wherein the angle of contact of the magnetic sticking sheet fed to the cylindrical permanent magnet is made 45null or less, and a magnetization apparatus used for the method.

Abstract translation: 一种磁化磁片的方法，所述方法能够以高速方便地磁化卷板，并且稳定地包括以下步骤：使具有N极的圆柱形永磁体和多极磁极化的S极沿其圆周交替地与 长片状磁性片的一个表面具有易于磁化的轴在片材纵向取向，使得片材纵向方向与永磁体的轴正交，并且沿着易磁化轴对磁性粘着片进行多极磁化， 由于磁性粘贴片卷起，旋转圆柱形永磁体，其中馈送到圆柱形永磁体的磁性粘着片的接触角为45°以下，该方法使用的磁化装置。

公开(公告)号：US20030118467A1

公开(公告)日：2003-06-26

申请号：US10284384

申请日：2002-10-31

Inventor： Koji Sato ,  Mitsuo Kawabata ,  Takehisa Minowa

IPC: H01F001/08

CPC classification number: H01F7/0268 ,  H01F41/0266 ,  H01F41/028

Abstract: A radial anisotropic sintered magnet formed into a cylindrical shape includes a portion oriented in directions tilted at an angle of 30null or more from radial directions, the portion being contained in the magnet at a volume ratio in a range of 2% or more and 50% or less, and a portion oriented in radial directions or in directions tilted at an angle less than 30null from radial directions, the portion being the rest of the total volume of the magnet. The radial anisotropic sintered magnet has excellent magnet characteristics without occurrence of cracks in the steps of sintering and cooling for aging, even if the magnet has a shape of a small ratio between an inner diameter and an outer diameter.

公开(公告)号：US20020153636A1

公开(公告)日：2002-10-24

申请号：US09794131

申请日：2001-02-28

Applicant: Xerox Corporation

Inventor： Paul F. Mastro ,  Christopher D. Blair ,  Jennifer R. Wagner ,  Jay Schneider

IPC: B29C033/40 ,  G03G015/09 ,  B29C045/40 ,  B32B009/04

CPC classification number: H01F7/0268 ,  B29C33/56 ,  B29C45/37 ,  H01F41/0266

Abstract: A mold used to form a magnetic member includes a mold body having a mold opening, a mold support that supports the mold cavity, and a mold insert. The mold insert is disposed in the mold opening of the mold body to form a mold cavity. The mold insert is coated with a coating to protect the mold body from chemical attack and abrasive wear of the mold material. The coating comprises an electroless nickel layer formed on or over the mold insert, and a chromium nitride layer formed on or over the electroless nickel layer. The mold insert can be formed of beryllium-copper (BenullCu).

Abstract translation: 用于形成磁性构件的模具包括具有模具开口的模具主体，支撑模腔的模具支撑件和模具插入件。 模具插入件设置在模具主体的模具开口中以形成模腔。 模具插入件涂覆有涂层以保护模具体免受模具材料的化学侵蚀和磨损磨损。 涂层包括形成在模具插入件上或上方的无电镍层，以及形成在无电镀镍层上或之上的氮化铬层。 模具插入件可以由铍铜（Be-Cu）形成。

公开(公告)号：US06343419B1

公开(公告)日：2002-02-05

申请号：US09549627

申请日：2000-04-14

Applicant: Alan M. Litman ,  Jorge A. Alvarez

Inventor： Alan M. Litman ,  Jorge A. Alvarez

IPC: B21D5300

CPC classification number: H01F7/0268 ,  G03G15/0921 ,  Y10T29/49549 ,  Y10T29/49563

Abstract: A method for manufacturing a magnetic roll for use in an electrophotographic printing machine of the type having an electrostatic latent image recorded on a photoconductive member is provided. The method includes the steps of placing a shaft in a mold cavity and molding a core in the mold cavity with the shaft in the cavity. The core defines a pocket on the periphery of the core. The method further includes the step of attaching a magnet to the pocket.

Abstract translation: 提供一种用于制造具有记录在感光体上的静电潜像的电子照相印刷机的磁性辊的制造方法。 该方法包括以下步骤：将轴放置在模具腔中，并将模具中的芯体模制在腔体中的轴上。 芯部在芯部的外围设置一个口袋。 该方法还包括将磁体附接到口袋的步骤。

公开(公告)号：US06284150B1

公开(公告)日：2001-09-04

申请号：US09381697

申请日：1999-09-23

Applicant: Yasunobu Ogata ,  Yutaka Kubota ,  Takashi Takami ,  Shuichi Shiina

Inventor： Yasunobu Ogata ,  Yutaka Kubota ,  Takashi Takami ,  Shuichi Shiina

IPC: H01F911

CPC classification number: C01G49/0054 ,  C01G49/0063 ,  C01G49/0072 ,  C01G51/006 ,  C01G53/006 ,  C01P2002/52 ,  C01P2004/45 ,  C01P2004/51 ,  C01P2004/61 ,  C01P2004/62 ,  C01P2006/10 ,  C01P2006/42 ,  C04B35/2633 ,  C04B35/2683 ,  C04B35/6261 ,  C04B35/6262 ,  C04B35/62625 ,  C04B35/6263 ,  C04B35/63 ,  C04B2235/3213 ,  C04B2235/3224 ,  C04B2235/3227 ,  C04B2235/3229 ,  C04B2235/3232 ,  C04B2235/3239 ,  C04B2235/3262 ,  C04B2235/3274 ,  C04B2235/3275 ,  C04B2235/3279 ,  C04B2235/3281 ,  C04B2235/3284 ,  C04B2235/5436 ,  C04B2235/5445 ,  C04B2235/6022 ,  C04B2235/72 ,  C04B2235/724 ,  C04B2235/726 ,  C04B2235/727 ,  C04B2235/767 ,  H01F1/11 ,  H01F1/113 ,  H01F7/0268 ,  H01F41/0273

Abstract: A ferrite powder for bonded magnets having a substantially magnetoplumbite-type crystal structure and an average diameter of 0.9-2 &mgr;m, the ferrite powder having a basic composition represented by the following general formula: (A1-xRxO.n[Fe1-yMy)2O3] by atomic ratio, wherein A is Sr and/or Ba; R is at least one of rare earth elements including Y, La being indispensable; M is at least one element selected from the group consisting of Co, Mn, Ni and Zn; and x, y and n are numbers meeting the conditions of 0.01≦x≦0.4, [x/(2.6n)]≦y≦[x/(1.6n)], and 5≦n≦6, (Si+Ca) being 0.2 weight % or less, and (Al+Cr) being 0.13 weight % or less, can be produced by mixing iron oxide containing 0.06 weight % or less of (Si+Ca) and 0.1 weight % or less of (Al+Cr) with compounds of A, R and M elements, calcining the resultant mixture for ferritization, pulverizing the resultant magnetically isotropic ferrite and then heat-treating the pulverized ferrite at 750-950° C. for 0.5-3 hours in the air.

Abstract translation: 一种铁氧体粉末，具有基本上为磁铅石型晶体结构，平均直径为0.9〜2μm的铁氧体粉末，所述铁氧体粉末具有以下通式表示的碱性组成：（A1-xRxO.n [Fe1-yMy）2O3 ]其中A是Sr和/或Ba; R是包括Y，La不可缺少的稀土元素中的至少一种; M是选自Co，Mn，Ni和Zn中的至少一种元素; 并且x，y和n是满足0.01 <= x <= 0.4，[x /（2.6n）] <= y <= [x /（1.6n）]和5 <= n <= 6 ，（Si + Ca）为0.2重量％以下，（Al + Cr）为0.13重量％以下，可以通过混合含有0.06重量％以下的（Si + Ca）和0.1重量％的氧化铁或 将Al（Al + Cr）与A，R和M元素的化合物相比较，煅烧所得的铁素体混合物，粉碎所得的磁各向同性铁素体，然后在750-950℃下热处理粉碎的铁素体0.5-3小时 在空中。

公开(公告)号：US5898352A

公开(公告)日：1999-04-27

申请号：US976764

申请日：1997-11-24

Applicant: David A. McEachern ,  Robert A. Heitman

Inventor： David A. McEachern ,  Robert A. Heitman

IPC: B41F27/02 ,  H01F7/02

CPC classification number: H01F7/0268 ,  B41F27/02

Abstract: In a magnetic cylinder for holding printing plates and the like in which magnetic elements are located and held in place in recesses formed on the outer surface of the cylinder, a thin substantially non-magnetic foraminate layer is located at the bottom of the recesses and the magnetic elements rest against the foraminate layer.

Abstract translation: 在用于保持印刷板等的磁性气缸中，其中磁性元件位于并保持在形成在气缸的外表面上的凹槽中的适当位置，薄的基本上非磁性的层压层位于凹槽的底部，并且 磁性元件靠在有孔层上。