公开(公告)号：US06310837B1

公开(公告)日：2001-10-30

申请号：US09170083

申请日：1998-10-13

申请人： Tsutomu Chou ,  Masao Shigeta ,  Masahiro Karatsu ,  Mari Fujii ,  Chikara Ishizaka ,  Katsumi Saito ,  Katsuhiko Wakayama ,  Shohei Mimura ,  Masahiro Ito

发明人： Tsutomu Chou ,  Masao Shigeta ,  Masahiro Karatsu ,  Mari Fujii ,  Chikara Ishizaka ,  Katsumi Saito ,  Katsuhiko Wakayama ,  Shohei Mimura ,  Masahiro Ito

IPC分类号： G11B566

CPC分类号： G06K19/06196 ,  Y10T428/2982

摘要： The invention is a magnetic recording medium which is effectively protected against forgery by the alteration of recorded data, and a method for carrying out writing and reading on this magnetic recording medium. The magnetic recording medium of the invention comprises a recording material composed of a crystalline alloy containing Fe and Al . In the recoding material, the total amount of Fe and Al is at least 90 at % and the atomic ratio Al/(Fe+Al) ranges from 0.30 to 0.45. The recording material changes from a disordered phase to an ordered phase by heating. The recording material has a saturation magnetization of at least 45 emu/g prior to heating and lowers its saturation magnetization by at least 35 emu/g upon heating. Dark regions are observable in a bright-field image of the recording material by transmission electron microscopy, the dark regions accounting for 15-60% of the recording material in areal ratio and having a maximum breadth of 10-200 nm.

摘要翻译： 本发明是通过改变记录数据有效地防止伪造的磁记录介质，以及用于在该磁记录介质上执行写和读的方法。 本发明的磁记录介质包括由含有Fe和Al的结晶合金构成的记录材料。 在记录材料中，Fe和Al的总量为90原子％以上，原子比Al /（Fe + Al）为0.30〜0.45。 记录材料通过加热从无序相变为有序相。 记录材料在加热之前具有至少45emu / g的饱和磁化强度，并且在加热时将其饱和磁化降低至少35emu / g。 通过透射电子显微镜在记录材料的明场图像中可以观察到暗区域，黑色区域占记录材料的面积比率的15-60％，最大宽度为10-200nm。

公开(公告)号：US06202926B1

公开(公告)日：2001-03-20

申请号：US09244986

申请日：1999-02-04

申请人： Masahiro Ito ,  Shohei Mimura ,  Masao Shigeta ,  Tsutomu Chou

发明人： Masahiro Ito ,  Shohei Mimura ,  Masao Shigeta ,  Tsutomu Chou

IPC分类号： G06K708

CPC分类号： G06K19/06196

摘要： A magnetic recording medium, and methods of making and reading the same, including on at least a portion of a substrate an irreversible recording layer which contains an irreversible recording material undergoing an irreversible change of saturation magnetization upon heating. The invention involves the steps of previously heating the irreversible recording layer to form an initial heated region in which a plurality of heated bars whose saturation magnetization has been irreversibly changed are arrayed in a bar code pattern, and converting unheated bars disposed between the heated bars into a heated state for changing the array pattern of heated bars, thereby recording the information.

摘要翻译： 一种磁记录介质及其制造和读取方法，在至少一部分基板上包含不可逆记录层，该不可逆记录层含有在加热时经历饱和磁化强度不可逆变化的不可逆记录材料。 本发明涉及以下步骤：预先加热不可逆记录层以形成初始加热区域，其中饱和磁化强度已经不可逆地改变的多个加热棒被以条形码图案排列，并且将设置在加热棒之间的未加热条转换为 用于改变加热棒的阵列图案的加热状态，从而记录信息。

公开(公告)号：US6029895A

公开(公告)日：2000-02-29

申请号：US244437

申请日：1999-02-04

申请人： Masahiro Ito ,  Shohei Mimura ,  Masao Shigeta ,  Tsutomu Chou

发明人： Masahiro Ito ,  Shohei Mimura ,  Masao Shigeta ,  Tsutomu Chou

IPC分类号： G06K19/06

CPC分类号： G06K19/06196

摘要： A magnetic recording medium, and a method of making the same, including an irreversible recording layer which undergoes an irreversible change of saturation magnetization upon heating. The magnetic recording medium includes on at least a portion of a substrate an irreversible recording layer which contains an irreversible recording material undergoing an irreversible change of saturation magnetization upon heating. The irreversible recording layer includes at least in part a fixed information recording region for recording the fixed information of the medium. In the fixed information recording region, a plurality of heated bars whose saturation magnetization has been irreversibly changed are arrayed substantially parallel to each other. The array pattern of the heated bars or the array pattern of unheated bars disposed between adjacent ones of the heated bars contains the fixed information encoded in a frequency modulation process or phase modulation process.

摘要翻译： 一种磁记录介质及其制造方法，包括在加热时经受饱和磁化强度的不可逆变化的不可逆记录层。 磁记录介质在衬底的至少一部分上包括不可逆记录层，其含有在加热时经历饱和磁化强度的不可逆变化的不可逆记录材料。 不可逆记录层至少部分地包括用于记录介质的固定信息的固定信息记录区域。 在固定信息记录区域中，饱和磁化强度已经不可逆地改变的多个加热棒彼此基本平行排列。 设置在相邻加热棒之间的加热棒的阵列图案或未加热棒的阵列图案包含以频率调制过程或相位调制过程编码的固定信息。

公开(公告)号：US07323214B2

公开(公告)日：2008-01-29

申请号：US10494738

申请日：2002-11-08

申请人： Katsuhiko Wakayama ,  Masahiro Karatsu ,  Tsutomu Chou ,  Yasuo Hashimoto

发明人： Katsuhiko Wakayama ,  Masahiro Karatsu ,  Tsutomu Chou ,  Yasuo Hashimoto

IPC分类号： B05D5/12

CPC分类号： H05K9/0086 ,  H01F1/18 ,  H01F1/26 ,  H01F41/0246 ,  H05K9/0075

摘要： The object of the present invention is to provide an electromagnetic wave absorbing sheet excellent in permeability in high frequencies and to provide a method for manufacturing the same.The electromagnetic wave absorbing sheet of the present invention comprises insulating layers on the both sides of a magnetic layer. The magnetic layer is formed by densely depositing a large amount of magnetic powder such that the powder undergoes plastic deformation. Each magnetic powder is made to be a composite magnetic material formed of the soft magnetic metal phase consisting of a flaky soft magnetic metal powder and the insulating phase consisting of an insulating film formed on the surface of the soft magnetic metal phase.Additionally, another configuration can be taken in which a conductive layer is arranged on one of the insulating layers arranged on both sides of the magnetic layer, and the conductive layer is covered with an insulating layer.

摘要翻译： 本发明的目的是提供一种高频磁导率优异的电磁波吸收片，并提供其制造方法。 本发明的电磁波吸收片包括在磁性层两侧的绝缘层。 磁性层通过密集沉积大量的磁性粉末形成，使得粉末发生塑性变形。 每个磁粉被制成由软磁金属相组成的复合磁性材料，该软磁金属相是由薄片软磁金属粉末和由形成在软磁金属相表面上的绝缘膜组成的绝缘相。 此外，可以采用在布置在磁性层的两侧上的绝缘层之一上布置导电层的另一结构，并且导电层被绝缘层覆盖。

公开(公告)号：US20050012652A1

公开(公告)日：2005-01-20

申请号：US10494738

申请日：2002-11-08

申请人： Katsuhiko Wakayama ,  Masahiro Karatsu ,  Tsutomu Chou ,  Yasuo Hashimoto

发明人： Katsuhiko Wakayama ,  Masahiro Karatsu ,  Tsutomu Chou ,  Yasuo Hashimoto

IPC分类号： H01F1/18 ,  H01F1/24 ,  H01F1/26 ,  H01F41/02 ,  H05K9/00 ,  H01Q17/00

CPC分类号： H05K9/0086 ,  H01F1/18 ,  H01F1/26 ,  H01F41/0246 ,  H05K9/0075

摘要： The object of the present invention is to provide an electromagnetic wave absorbing sheet excellent in permeability in high frequencies and to provide a method for manufacturing the same. The electromagnetic wave absorbing sheet of the present invention comprises insulating layers on the both sides of a magnetic layer. The magnetic layer is formed by densely depositing a large amount of magnetic powder such that the powder undergoes plastic deformation. Each magnetic powder is made to be a composite magnetic material formed of the soft magnetic metal phase consisting of a flaky soft magnetic metal powder and the insulating phase consisting of an insulating film formed on the surface of the soft magnetic metal phase. Additionally, another configuration can be taken in which a conductive layer is arranged on one of the insulating layers arranged on both sides of the magnetic layer, and the conductive layer is covered with an insulating layer.

摘要翻译： 本发明的目的是提供一种高频磁导率优异的电磁波吸收片，并提供其制造方法。 本发明的电磁波吸收片包括在磁性层两侧的绝缘层。 磁性层通过密集沉积大量的磁性粉末形成，使得粉末发生塑性变形。 每个磁粉被制成由软磁金属相组成的复合磁性材料，该软磁金属相是由薄片软磁金属粉末和由形成在软磁金属相表面上的绝缘膜组成的绝缘相。 此外，可以采用在布置在磁性层的两侧上的绝缘层之一上布置导电层的另一结构，并且导电层被绝缘层覆盖。

公开(公告)号：US07416613B2

公开(公告)日：2008-08-26

申请号：US11040494

申请日：2005-01-21

申请人： Tsutomu Chou ,  Gouichi Nishizawa ,  Masatoshi Hatakeyama ,  Chikara Ishizaka

发明人： Tsutomu Chou ,  Gouichi Nishizawa ,  Masatoshi Hatakeyama ,  Chikara Ishizaka

IPC分类号： H01F1/04 ,  H01F1/053

CPC分类号： H01F1/0536 ,  H01F1/0577 ,  H01F41/0273

摘要： A method for compacting a magnetic powder in a magnetic field comprising steps of filling a die with a magnetic powder, applying a pulsed magnetic field to the magnetic powder in the die to orientate the powder, and compressing the magnetic powder, wherein the pulsed magnetic field is applied twice or more when density ρ of a compacted body of said magnetic powder satisfies the relationship ρ=α×H0.5+β(α=0.63 and β=1 to 2), where H is intensity (T) of the applied magnetic field.

摘要翻译： 一种用于在磁场中压制磁粉的方法，包括以下步骤：用磁粉填充模具，将脉冲磁场施加到模具中的磁粉以使粉末定向并压缩磁粉，其中脉冲磁场 施加两次或更多次，所述磁粉的压实体的密度rho满足关系rho = alphaxH0.5 +β（α= 0.63和β= 1至2），其中H是强度（T ）所施加的磁场。

公开(公告)号：US20050183792A1

公开(公告)日：2005-08-25

申请号：US11040494

申请日：2005-01-21

申请人： Tsutomu Chou ,  Gouichi Nishizawa ,  Masatoshi Hatakeyama ,  Chikara Ishizaka

发明人： Tsutomu Chou ,  Gouichi Nishizawa ,  Masatoshi Hatakeyama ,  Chikara Ishizaka

IPC分类号： H01F1/053 ,  H01F1/057 ,  H01F41/02 ,  H01F1/08

CPC分类号： H01F1/0536 ,  H01F1/0577 ,  H01F41/0273

摘要： A method for compacting a magnetic powder in a magnetic field comprising steps of filling a die with a magnetic powder, applying a pulsed magnetic field to the magnetic powder in the die to orientate the powder, and compressing the magnetic powder, wherein the pulsed magnetic field is applied twice or more when density ρ of a compacted body of said magnetic powder satisfies the relationship ρ=α×H0.5+β (α=0.63 and β=1 to 2), where H is intensity (T) of the applied magnetic field.

摘要翻译： 一种用于在磁场中压制磁粉的方法，包括以下步骤：用磁粉填充模具，将脉冲磁场施加到模具中的磁粉以使粉末定向并压缩磁粉，其中脉冲磁场 施加两次或更多次，所述磁粉的压实体的密度rho满足关系rho = alphaxH0.5 +β（α= 0.63和β= 1至2），其中H是强度（T ）所施加的磁场。

公开(公告)号：US20050003079A1

公开(公告)日：2005-01-06

申请号：US10797926

申请日：2004-03-10

申请人： Katsuhiko Wakayama ,  Yasuo Hashimoto ,  Akira Kakinuma ,  Tsutomu Chou ,  Yasushi Iijima ,  Masanori Kaya ,  Kazunori Tasaki

发明人： Katsuhiko Wakayama ,  Yasuo Hashimoto ,  Akira Kakinuma ,  Tsutomu Chou ,  Yasushi Iijima ,  Masanori Kaya ,  Kazunori Tasaki

IPC分类号： B32B27/36 ,  B32B37/20 ,  C23C26/00 ,  H01F1/18 ,  H01F41/02 ,  H01F1/00

CPC分类号： B32B15/09 ,  B32B7/12 ,  B32B27/36 ,  B32B37/203 ,  B32B38/0036 ,  B32B38/1875 ,  B32B2250/42 ,  B32B2307/20 ,  B32B2307/202 ,  B32B2307/206 ,  B32B2309/02 ,  B32B2309/105 ,  B32B2311/00 ,  B32B2367/00 ,  C21D2251/02 ,  C23C26/00 ,  H01F1/18 ,  H01F41/0233

摘要： By laminating soft magnetic sheets 1, 11, a laminated soft magnetic member 5 in which insulating layers and soft magnetic metal layers are alternately laminated is produced. In this case, prior to laminating the obtained soft magnetic sheets 1, 11, or posterior to obtaining the laminated soft magnetic member 5 by laminating the soft magnetic sheets 1, 11, heat treatment is conducted under the conditions predetermined depending on the purpose of the heat treatment. During the heat treatment, pressing treatment can also be conducted concurrently. Additionally, when the heat treatment is conducted under the condition in which a tension is applied, further improvement of the magnetic properties can be expected.

摘要翻译： 通过层压软磁片1,11，制造层叠的软磁体5，绝缘层和软磁金属层交替层叠。 在这种情况下，在通过层叠软磁性片1,11层叠得到的软磁性体片11,11之前或之后层叠软磁性体5，在根据本发明的目的的预定条件下进行热处理 热处理。 在热处理中，也可以同时进行压制处理。 此外，当在施加张力的条件下进行热处理时，可以期望进一步提高磁性能。

公开(公告)号：US08462593B1

公开(公告)日：2013-06-11

申请号：US13367767

申请日：2012-02-07

申请人： Eiji Komura ,  Koji Shimazawa ,  Tsutomu Chou ,  Shinji Hara ,  Kosuke Tanaka

发明人： Eiji Komura ,  Koji Shimazawa ,  Tsutomu Chou ,  Shinji Hara ,  Kosuke Tanaka

IPC分类号： G11B11/00

CPC分类号： G11B5/314 ,  G11B5/6088 ,  G11B2005/0021

摘要： A magnetic head includes a dielectric waveguide to propagate propagation light; a metal waveguide facing the dielectric waveguide, coupling to the propagation light propagating through the dielectric waveguide in a surface plasmon mode, generating first surface plasmon with larger wavenumber than that of the propagation light, and propagating the first surface plasmon; a near-field light generating element facing the metal waveguide and extending to ABS, coupling to the first surface plasmon propagating on the metal waveguide in a surface plasmon mode, generating second surface plasmon with wavenumber larger than that of the first surface plasmon, propagating the second surface plasmon to an end part on the ABS side, and generating near-field light at the end part on the ABS side; and a recording magnetic pole provided in the vicinity of the near-field light generating element and having an end part positioned on the ABS.

摘要翻译： 磁头包括传播传播光的电介质波导; 面向电介质波导的金属波导，以表面等离子体模式耦合到通过电介质波导传播的传播光，产生波数比传播光波数大的第一表面等离子体，并传播第一表面等离子体; 面向金属波导并延伸到ABS的近场光产生元件，以表面等离子体模式耦合到在金属波导上传播的第一表面等离子体激元，产生波数大于第一表面等离子体波的第二表面等离子体，传播 第二表面等离子体激元到ABS侧的端部，并且在ABS侧的端部产生近场光; 以及设置在近场光产生元件附近并具有位于ABS上的端部的记录磁极。

公开(公告)号：US08437237B2

公开(公告)日：2013-05-07

申请号：US12986532

申请日：2011-01-07

申请人： Eiji Komura ,  Tsutomu Chou ,  Koji Shimazawa

发明人： Eiji Komura ,  Tsutomu Chou ,  Koji Shimazawa

IPC分类号： G11B7/00

CPC分类号： G11B5/314 ,  G01D5/34 ,  G11B5/6088 ,  G11B2005/0021

摘要： A light source unit includes a light source and a photodetector. The light source has an emission part for emitting light. The photodetector has a light receiving surface for receiving the light emitted from the emission part, and detects the light. The light source unit further includes a grating made of metal and disposed to extend along the light receiving surface. The grating includes a plurality of line-shaped portions that each extend in a direction intersecting the direction of travel of the light and that are located at positions different from each other along the direction of travel of the light.

摘要翻译： 光源单元包括光源和光电检测器。 光源具有用于发光的发射部分。 光电检测器具有用于接收从发射部分发射的光的光接收表面，并检测光。 光源单元还包括由金属制成并被设置为沿着光接收表面延伸的光栅。 光栅包括多个线状部分，每个线状部分沿着与光的行进方向交叉的方向延伸，并且位于沿着光的行进方向彼此不同的位置。