公开(公告)号：US20070231603A1

公开(公告)日：2007-10-04

申请号：US11694234

申请日：2007-03-30

申请人： Ken OHASHI

发明人： Ken OHASHI

IPC分类号： B32B15/00 ,  B05D5/12

CPC分类号： G11B5/852 ,  B82Y25/00 ,  H01F1/055 ,  H01F1/057 ,  H01F10/3222 ,  H02K1/02 ,  H02K15/03 ,  Y10T428/32

摘要： A magnetic field generating method and a permanent magnetic circuit for, using magnetic field heat treatment, imparting axisymmetric anisotropy in a direction parallel to the substrate to a soft magnetic body, particularly a soft magnetic backing layer for a perpendicular two-layered magnetic recording medium used in perpendicular magnetic recording. In a rare earth permanent magnetic circuit that exhibits hardly any demagnetization at high temperature, a plurality of magnet side faces 95 orthogonal to pole faces 94 are disposed with space therebetween. A magnetic field that is substantially antiparallel to magnetization 91 is generated in the space, and an unprocessed sample is inserted. Further, the permanent magnetic circuit with the unprocessed sample inserted therein is placed in a heat treatment furnace, and the unprocessed sample is rotated 96 as desired.

摘要翻译： 一种用于使用磁场热处理的磁场产生方法和永久磁路，在与软磁体平行的方向上赋予轴对称各向异性，特别是用于垂直两层磁记录介质的软磁背衬层 在垂直磁记录中。 在高温几乎不退磁的稀土永磁回路中，与极面94正交的多个磁铁侧面95设置有空间。 在空间中产生与磁化91基本上反平行的磁场，并且插入未处理的样品。 此外，将未处理的样品插入其中的永久磁路放置在热处理炉中，并且根据需要将未处理的样品旋转96°。

公开(公告)号：US20070054154A1

公开(公告)日：2007-03-08

申请号：US11488937

申请日：2006-07-18

申请人： Charles Leu

发明人： Charles Leu

IPC分类号： G11B5/65 ,  B05D5/12

CPC分类号： G11B5/852 ,  G11B5/65 ,  G11B5/656

摘要： A magnetic recording medium includes a substrate and a magnetic granular thin film formed on the substrate. The granular thin film includes a plurality of magnetic nano-particles contained in a plurality of corresponding carbon nano-materials. The magnetic nano-particles are evenly distributed on the substrate; and each magnetic nano-particle has a magnetization direction substantially parallel to that of the other magnetic nano-particles. A related method for making a magnetic recording medium is also provided.

摘要翻译： 磁记录介质包括在基板上形成的基板和磁性粒状薄膜。 颗粒状薄膜包含多个相应的碳纳米材料中所含的多个磁性纳米颗粒。 磁性纳米颗粒均匀分布于基体上; 并且每个磁性纳米颗粒具有基本上平行于其它磁性纳米颗粒的磁化方向的磁化方向。 还提供了制造磁记录介质的相关方法。

公开(公告)号：US20060082035A1

公开(公告)日：2006-04-20

申请号：US10545585

申请日：2004-02-18

申请人： Eiji Sugiyama ,  Masaaki Aoki ,  Hiroyuki Kenju ,  Ryouichi Utsumi ,  Kiichi Itagaki

发明人： Eiji Sugiyama ,  Masaaki Aoki ,  Hiroyuki Kenju ,  Ryouichi Utsumi ,  Kiichi Itagaki

IPC分类号： C21D9/00 ,  C21D1/04 ,  H01F1/00

CPC分类号： G11B5/852

摘要： A magnetic annealing device for inserting a recording medium 1 provided with an axial hole formed at a center thereof and having a disk shape into a chamber 10 and applying a heat treatment to the recording medium 1 in a magnetic field is provided with a magnetic circuit for forming a magnetic field in the chamber 10, the magnetic circuit comprises a pair of magnets 4 and 5 disposed with a distance therebetween along an axial direction of the axial hole and having magnetic fields directionally opposed to each other and a first ferromagnetic substance 6 disposed between the pair of magnets 4 and 5, wherein the recording medium 1 to be heat-treated is disposed at an intermediate position between the pair of magnets 4 and 5 facing each other in the state in which the first ferromagnetic substance 6 is inserted into the axial hole. A second ferromagnetic substance 7 having a ring shape is preferably disposed in a periphery of the recording medium 1.

摘要翻译： 一种用于将设置有形成在其中心并具有盘形的轴向孔的记录介质1插入到室10中并且在磁场中对记录介质1进行热处理的磁性退火装置设置有用于 在室10中形成磁场，磁路包括一对磁体4,5，它们沿着轴向孔的轴向设置有一定距离，并且具有相互定向相对的磁场和第一铁磁体6， 一对磁体4和5，其中待热处理的记录介质1设置在一对磁体4和5之间的中间位置处，在第一铁磁性物质6插入到轴向 孔。 具有环形的第二铁磁性物质7优选设置在记录介质1的周围。

公开(公告)号：US20040229006A1

公开(公告)日：2004-11-18

申请号：US10845868

申请日：2004-05-14

申请人： FUJITSU LIMITED

发明人： Satoru Momose ,  Hiroyoshi Kodama ,  Nobutaka Ihara

IPC分类号： B32B027/02

CPC分类号： B82Y30/00 ,  B82Y10/00 ,  G11B5/65 ,  G11B5/653 ,  G11B5/656 ,  G11B5/667 ,  G11B5/84 ,  G11B5/842 ,  G11B5/852

摘要： A magnetic recording medium has a recording layer, disposed above a surface of a substrate and made of hard magnetic nano-particles. The hard magnetic nano-particles are made of an alloy having as a main component an element selected from a group consisting of FePt, FePd and CoPt, and the hard magnetic nano-particles have axes of easy magnetization oriented in a direction approximately perpendicular to the surface of the substrate.

摘要翻译： 磁记录介质具有记录层，该记录层设置在基板表面上方并由硬磁性纳米颗粒制成。 硬磁性纳米粒子由以FePt，FePd，CoPt为主要成分的主要成分的合金构成，硬磁性纳米粒子具有容易磁化的轴， 基板的表面。

公开(公告)号：US20040137220A1

公开(公告)日：2004-07-15

申请号：US10750882

申请日：2004-01-05

申请人： Hitachi, Ltd.

发明人： Yuko Tsuchiya ,  Motoyasu Terao

IPC分类号： B32B005/16

CPC分类号： G11B5/65 ,  G11B5/00 ,  G11B5/012 ,  G11B5/82 ,  G11B5/84 ,  G11B5/852 ,  G11B11/10536 ,  G11B2005/0002 ,  G11B2005/0005 ,  G11B2005/0021 ,  Y10T428/256

摘要： The magnetic recording medium provided is produced by forming a substrate having a nanoparticle layer comprising an array of nanoparticles, and an organic compound between said array of nanoparticles; irradiating the nanoparticle layer with an infrared beam to magnetize the nanoparticles; applying a magnetic field to the nanoparticle layer to orient easy axis of magnetization of the magnetic nanoparticles in a substantially uniform direction; and irradiating the nanoparticle layer with an ultraviolet beam to bind said organic compound to thereby produce a magnetic recording medium wherein easy axis of magnetization of the nanoparticles has been oriented in a direction substantially parallel to a direction at a particular angle with the substrate. The resulting magnetic recording medium experiences no deterioration of the underlying layer or the soft magnetic layer, and exhibits good magnetic properties.

摘要翻译： 提供的磁记录介质通过形成具有包含纳米颗粒阵列的纳米颗粒层的基底和在所述纳米颗粒阵列之间的有机化合物来制备; 用红外线照射纳米颗粒层以磁化纳米颗粒; 将磁场施加到纳米颗粒层以使磁性纳米颗粒的易磁化轴在基本上均匀的方向上定向; 并用紫外线照射纳米颗粒层以结合所述有机化合物，从而产生磁记录介质，其中纳米颗粒的易磁化轴沿基本上平行于与基底的特定角度的方向取向。 所得到的磁记录介质没有经历下层或软磁层的劣化，并且表现出良好的磁性能。

公开(公告)号：US06235368B1

公开(公告)日：2001-05-22

申请号：US09157598

申请日：1998-09-21

申请人： Hans-Bertram Wiegemann ,  Peter Stehle ,  Hansjörg Traub ,  Helmut Jakusch

发明人： Hans-Bertram Wiegemann ,  Peter Stehle ,  Hansjörg Traub ,  Helmut Jakusch

IPC分类号： G11B5716

CPC分类号： G11B5/716 ,  G11B5/852 ,  Y10S428/90 ,  Y10T428/24975 ,  Y10T428/256

摘要： A magnetic recording medium which consists of at least two layers cast one on top of the other is described, the lower layer containing acicular magnetic pigments having a field strength of 5-40 kA/m and a magnetization of 20-70 nTm3/g and the upper layer containing a high-density metal powder dispersion. After application of the layers, the magnetic recording medium is subjected to a magnetic disorientation treatment while the layers are in the wet state, so that said recording medium has virtually no magnetic and mechanical anisotropy. The magnetic recording medium produced in this manner is particularly suitable for floppy disks having a high storage capacity of substantially more than 100 megabytes.

摘要翻译： 描述了由至少两层在另一层之上浇铸的磁记录介质，下层含有场强为5-40kA / m，磁化强度为20-70nTm3 / g的针状磁性颜料， 上层含有高密度金属粉末分散体。 在施加层之后，磁记录介质在层处于湿态时进行磁性定向处理，使得所述记录介质几乎不具有磁和机械各向异性。 以这种方式制造的磁记录介质特别适用于具有大大超过100兆字节的高存储容量的软盘。

公开(公告)号：US4734708A

公开(公告)日：1988-03-29

申请号：US535116

申请日：1983-09-23

申请人： Koichi Saitoh ,  Teruhiko Itami ,  Toshifumi Kimoto ,  Kiyoshi Horie

发明人： Koichi Saitoh ,  Teruhiko Itami ,  Toshifumi Kimoto ,  Kiyoshi Horie

IPC分类号： B41J2/42 ,  G01D15/12 ,  G03G19/00 ,  G11B5/02 ,  G11B5/852

CPC分类号： G11B5/852 ,  G01D15/12 ,  G03G19/005

摘要： In a magnetically recording and erasing the magnetic latent image on the magnetic recording medium, the magnetic recording medium includes a base layer, a first magnetic layer in which a repetitive magnetic pattern is in advance formed, and a second magnetic layer on which the magnetic latent image to be formed is thermo-magnetically formed. A method of erasing the magnetic latent image on the second magnetic layer includes the steps of simultaneously applying an external magnetic field and heat to be thermally magnetized layer of a magnetic recording medium.

摘要翻译： 在磁记录和擦除磁记录介质上的磁潜像的磁记录介质中，磁记录介质包括基层，其中预先形成重复磁图案的第一磁性层和磁性潜层 要形成的图像是热磁性形成的。 擦除第二磁性层上的磁潜像的方法包括同时施加外部磁场和加热成为磁记录介质的热磁化层的步骤。

公开(公告)号：US4666773A

公开(公告)日：1987-05-19

申请号：US585023

申请日：1984-03-05

申请人： Tatsuji Kitamoto ,  Goro Akashi

发明人： Tatsuji Kitamoto ,  Goro Akashi

IPC分类号： G11B5/70 ,  G11B5/845 ,  G11B5/852 ,  H01F10/02

CPC分类号： G11B5/70 ,  G11B5/845 ,  G11B5/852 ,  Y10S428/90 ,  Y10T428/26 ,  Y10T428/31678

摘要： In a magnetic recording medium comprising a non-magnetic support and a magnetic recording layer coated thereon in which ferromagnetic particles are dispersed in a binder, the ferromagnetic particles are given a magnetic anisotropy by a magnetic annealing treatment and the direction of the magnetic anisotropy is vertical mainly to the recording surface. Thus, the vertical magnetization recording is improved.

摘要翻译： 在包含非磁性载体和涂覆有磁性体的磁记录层的磁记录介质中，铁磁颗粒分散在粘合剂中，铁磁颗粒通过磁性退火处理被赋予磁各向异性，并且磁各向异性方向垂直 主要是记录面。 因此，提高了垂直磁化记录。

公开(公告)号：US4593336A

公开(公告)日：1986-06-03

申请号：US495527

申请日：1983-05-17

申请人： David J. Sansom

发明人： David J. Sansom

IPC分类号： G06K19/12 ,  G07F7/08 ,  G11B5/39 ,  G11B5/70 ,  G11B5/852 ,  G11B23/00

CPC分类号： G11B5/3903 ,  G06K19/12 ,  G07F7/086 ,  G11B5/70 ,  G11B5/852

摘要： A permanently structured magnetic recording tape includes a pattern of first and second regions of acicular iron oxide particles, the first `A` regions being orientated at 22.5.degree. (clockwise) to the tapes axis and the second `B` regions being orientated at 67.5.degree. (clockwise) to the tape axis. A permanent magnet applies a developing field at 45.degree. (anti-clockwise) to the tape axis such that, at the transition in orientation direction, the normal components of remanence in `A` and `B` regions are in opposite directions, thereby increasing pole strength at the transitions compared with longitudinal development, and enhancing the output signal at the magnetoresistive read-out transducer.A second magnetoresistive transducer senses fluctuations in magnetic polarity at the tape edge to verify whether the medium is genuine.

摘要翻译： 永久结构的磁记录带包括针状氧化铁颗粒的第一和第二区域的图案，第一“A”区域以22.5°（顺时针）定向到带轴线，第二“B”区域定向为67.5° （顺时针）到磁带轴。 永磁体将45度（逆时针）的显影场线施加到带轴上，使得在取向方向上的过渡处，“A”和“B”区域中的剩磁的正常分量处于相反方向，从而增加 与纵向显影相比，在转变时的极点强度，以及增强磁阻读出传感器的输出信号。 第二磁阻换能器检测磁带边缘的磁极性的波动，以验证介质是否是真的。

公开(公告)号：US4580966A

公开(公告)日：1986-04-08

申请号：US614913

申请日：1984-05-29

申请人： Hiromasa Isono ,  Hiroshi Teramoto ,  Masanobu Shimizu

发明人： Hiromasa Isono ,  Hiroshi Teramoto ,  Masanobu Shimizu

IPC分类号： G11B5/82 ,  G11B5/845 ,  G11B5/852 ,  B29C71/00

CPC分类号： G11B5/845 ,  G11B5/852

摘要： A device for orienting magnetic particles contained in a magnetic layer on a disc-shaped magnetic recording medium along the circumference of the recording medium. The magnetic layer is provided on a substrate. The orientation is effected by a magnetic field developed by a pair of permanent magnets and which the recording medium traverses during rotation. The permanent magnets are individually shaped flat and arranged to oppose each other at their pole-faces which are common in polarity. A trailing edge of each magnet located with respect to relative movement of the rotating recording medium extends and aligns with the radius of the recording medium.

摘要翻译： 用于沿着记录介质的圆周将包含在磁性层中的磁性颗粒定向在盘形磁记录介质上的装置。 磁性层设置在基板上。 取向由一对永磁体产生的磁场实现，并且记录介质在旋转期间横穿。 永磁体分别成形为平坦的并且在它们的极性相同的极面处彼此相对布置。 相对于旋转记录介质的相对运动定位的每个磁体的后缘延伸并与记录介质的半径对准。