公开(公告)号：US20040229084A1

公开(公告)日：2004-11-18

申请号：US10764813

申请日：2004-01-26

Applicant: Fuji Electric Device Technology Co., Ltd.

Inventor： Tadaaki Oikawa ,  Takahiro Shimizu ,  Hiroyuki Uwazumi ,  Naoki Takizawa

IPC: G11B005/66

CPC classification number: G11B5/7325 ,  G11B5/65 ,  G11B5/656 ,  G11B5/8404

Abstract: A nonmagnetic foundation layer is made to have a body-centered cubic crystal structure with a preferred crystal orientation plane being the bcc (110) plane. A nonmagnetic intermediate layer, provided between the foundation layer and a granular magnetic layer, has a hexagonal close-packed structure with the hcp (100) plane or the hcp (200) plane being the preferred orientation plane. Furthermore, the crystal lattice misfit amount between the nonmagnetic intermediate layer 3 and the granular magnetic layer is made to be not more than 10% for each of an a-axis and a c-axis. As a result, epitaxial growth of ferromagnetic crystals in the granular magnetic layer, which has an hcp structure, is promoted, and hence the crystallinity of the magnetic layer is increased, and thus it becomes possible to simultaneously realize an increase in coercivity and a reduction in noise. Depositing the layers on an unheated substrate yields reduces manufacturing costs.

Abstract translation: 将非磁性基底层制成具有体心立方晶体结构，优选的晶体取向平面是bcc（110）面。 设置在基础层和粒状磁性层之间的非磁性中间层具有hcp（100）面或hcp（200）面为优选取向面的六方密堆积结构。 此外，非磁性中间层3和粒状磁性层之间的晶格失配量对于a轴和c轴分别为10％以下。 结果，促进了具有hcp结构的粒状磁性层中的铁磁晶体的外延生长，因此磁性层的结晶度增加，因此可以同时实现矫顽力的提高和还原 在噪音 将层沉积在未加热的基底上会降低制造成本。

公开(公告)号：US20040180174A1

公开(公告)日：2004-09-16

申请号：US10791384

申请日：2004-03-03

Applicant: FUJI PHOTO FILM CO., LTD.

Inventor： Kazuhiro Niitsuma ,  Masakazu Nishikawa ,  Tadashi Yasunaga

IPC: G11B005/66

CPC classification number: B82Y10/00 ,  G11B5/743 ,  G11B5/82 ,  G11B5/8404 ,  G11B5/858 ,  G11B5/865 ,  Y10T428/214

Abstract: A master information carrier for magnetic transfer includes a master substrate made of metal, including an embossed pattern corresponding to information to be transferred. The master substrate is produced by laminating a metal disk with a predetermined thickness on an original disk, on which an embossed pattern is formed, by electroforming, peeling off the metal disk and die-cutting a disk in a desired size. An outer diameter of the metal disk is at least 1.7 times longer than an outer diameter of the die-cut master substrate. When the metal disk is peeled off from the original disk, deformation due to the forces acting from the side of the outer circumference is reduced. The flatness of the metal disk is ensured and the transfer qualities are improved. Further, a step of removing distortion of the metal disk, caused at the time of peeling off the metal disk, may also be provided.

Abstract translation: 用于磁转移的主信息载体包括由金属制成的母基板，包括对应于要传送的信息的压花图案。 通过电铸，剥离金属盘并以期望的尺寸对盘进行模切，将原始盘上形成有预定厚度的金属盘层叠在其上形成压花图案的母板上制造母版衬底。 金属盘的外径比模切母版基板的外径长至少1.7倍。 当金属盘从原始盘剥离时，由于从外周侧作用的力的变形减小。 确保金属盘的平坦度，提高转印质量。 此外，还可以提供在剥离金属盘时引起的去除金属盘的变形的步骤。

公开(公告)号：US20040170870A1

公开(公告)日：2004-09-02

申请号：US10761771

申请日：2004-01-20

Applicant: Hoya Corporation

Inventor： Tomotaka Yokoyama ,  Hiroshi Tomiyasu ,  Masatomo Shibui ,  Nobuyuki Eto

IPC: G11B005/66

CPC classification number: B82Y15/00 ,  B32B17/10981 ,  C03C15/00 ,  C03C17/25 ,  C03C19/00 ,  C03C21/002 ,  C03C23/008 ,  C03C2204/08 ,  C03C2217/213 ,  C03C2218/111 ,  G11B5/7315 ,  G11B5/8404 ,  Y10S428/90 ,  Y10T428/315 ,  Y10T428/3154

Abstract: There are disclosed an information recording medium substrate having a surface roughness of Rmax 15 nm or less, and an information recording medium, particularly an information recording medium substrate and information recording medium in which for surfaces of the substrate and medium, a bearing area value (offset bearing area value) in a depth of 0.5 to 5 nm (predetermined slice level) from a bearing height (real peak height) corresponding to the bearing area value of 0.2% to 1.0% is 90% or less, and a manufacture method of the substrate and medium.

Abstract translation: 公开了具有Rmax为15nm以下的表面粗糙度的信息记录介质基板，以及信息记录介质，特别是信息记录介质基板和信息记录介质，其中，对于基板和介质的表面，承载面积值（ 偏移轴承面积值）从对应于0.2％〜1.0％的承载面积值的轴承高度（实际峰值高度）为0.5〜5nm（规定切片水平）的90％以下的制造方法 底物和介质。

公开(公告)号：US20040137276A1

公开(公告)日：2004-07-15

申请号：US10687961

申请日：2003-10-20

Applicant: FUJI PHOTO FILM CO., LTD.

Inventor： Yasushi Hattori ,  Koukichi Waki ,  Toshio Ishida

IPC: G11B005/66

CPC classification number: G11B5/70605 ,  G11B5/84

Abstract: The present invention provides a magnetic particle-coated material having a layer including a CuAu type or Cu3Au type ferromagnetic ordered alloy phase on an organic support. Further, the present invention provides a method of manufacturing a magnetic particle-coated material that sequentially includes a step of manufacturing alloy particles capable of forming a ferromagnetic ordered alloy phase, a step of coating an organic support with the alloy particles to form a coating film, and a step of annealing the coating film in a reducing atmosphere to make the alloy particles into magnetic particles, and further includes a step of oxidizing the alloy particles, the oxidizing step being performed between the alloy particle manufacturing step and the annealing step.

Abstract translation: 本发明提供了一种在有机载体上具有包含CuAu型或Cu3Au型铁磁有序合金相的层的磁性颗粒涂覆材料。 此外，本发明提供了一种磁性粒子涂覆材料的制造方法，该方法依次包括制造能够形成铁磁性有序合金相的合金粒子的步骤，用合金粒子涂覆有机载体以形成涂膜的步骤 以及在还原性气氛中对涂膜进行退火以使合金粒子成为磁性粒子的工序，还包括氧化合金粒子的步骤，在合金粒子的制造工序和退火工序之间进行氧化工序。

公开(公告)号：US20040131889A1

公开(公告)日：2004-07-08

申请号：US10662873

申请日：2003-09-16

Inventor： Johna Leddy ,  Pengcheng Zou

IPC: G11B005/66

CPC classification number: C04B35/01 ,  C01G53/00 ,  C01G53/006 ,  C01G53/04 ,  C01P2002/52 ,  C01P2002/74 ,  C01P2006/42 ,  C04B35/5805 ,  C04B2235/3272 ,  C04B2235/3279 ,  C04B2235/36 ,  C04B2235/3804 ,  C04B2235/40 ,  C04B2235/405 ,  H01M4/32 ,  H01M4/364 ,  H01M4/366 ,  H01M4/52 ,  H01M4/521 ,  H01M10/30 ,  H01M10/345 ,  Y10T29/49108 ,  Y10T428/12063 ,  Y10T428/257 ,  Y10T428/32

Abstract: The present invention is directed to methods for making magnetically modified electrodes and electrodes made according to the method. Such electrodes are useful as electrodes in batteries, such as NinullMH batteries, NinullCd batteries, NinullZn batteries and NinullFe batteries.

Abstract translation: 本发明涉及根据该方法制造磁修饰电极和电极的方法。 这种电极可用作电池中的电极，例如Ni-MH电池，Ni-Cd电池，Ni-Zn电池和Ni-Fe电池。

公开(公告)号：US20040106009A1

公开(公告)日：2004-06-03

申请号：US10601979

申请日：2003-06-24

Applicant: Hitachi, Ltd.

Inventor： Atsushi Nakamura ,  Yoshio Suzuki ,  Kiwamu Tanahashi ,  Yuko Tsuchiya

IPC: G11B005/66

CPC classification number: G11B5/1278 ,  G11B5/012 ,  G11B5/02 ,  G11B5/09 ,  G11B5/11 ,  G11B5/488 ,  G11B5/4886 ,  G11B5/64 ,  G11B5/74 ,  G11B5/82 ,  G11B2005/0002 ,  G11B2005/0005 ,  G11B2005/0029 ,  Y10T428/11

Abstract: A magnetic recording apparatus provides improved resolution and S/N without adversely affecting thermal stability. An angle formed by the direction of easy magnetization of a recording layer and the direction normal to a magnetic recording medium is in the range between 5null and 55null, the easy magnetization direction is from a back surface of the recording layer toward a front surface thereof, and when a recording track direction is from the upstream of the direction of transportation of the medium toward the downstream thereof, an angle formed by the direction of a projection of the easy magnetization direction on the medium plane and the recording track direction is in the range between 0null and 70null.

Abstract translation: 磁记录装置提供改进的分辨率和S / N，而不会不利地影响热稳定性。 由记录层容易磁化的方向和垂直于磁记录介质的方向形成的角度在5°和55°之间的范围内，容易的磁化方向是从记录层的背面向前表面 并且当记录轨道方向从介质的传送方向的上游到其下游时，由介质平面上的容易磁化方向的投影方向和记录轨道方向形成的角度在 范围在0°和70°之间。

公开(公告)号：US20040096702A1

公开(公告)日：2004-05-20

申请号：US10704717

申请日：2003-11-12

Applicant: FUJI PHOTO FILM CO., LTD.

Inventor： Shinji Saito ,  Hitoshi Noguchi ,  Hideaki Shiga

IPC: G11B005/66

CPC classification number: G11B5/738 ,  G11B5/70 ,  G11B5/70678 ,  G11B5/708 ,  G11B23/0332

Abstract: A magnetic disc medium comprising: a magnetic sheet in the form of a disk; a case encasing the magnetic sheet so as to be capable of rotating; and a nonwoven liner fastened on an inner face of the case so as to face the magnetic sheet, wherein the magnetic sheet comprises a support, a substantially nonmagnetic lower layer, and a magnetic layer containing hexagonal ferrite powder dispersed in a binder and having central plane average surface roughness of from 1 nm to 4 nm, and the liner comprises polyethylene terephthalate in an amount of 20% by weight or more.

Abstract translation: 一种磁盘介质，包括：磁盘形式的磁片; 封装磁性片以能够旋转的壳体; 以及紧固在所述壳体的内表面上以面对所述磁性片材的非织造衬里，其中所述磁性片材包括支撑体，基本上非磁性的下层以及分散在粘合剂中并具有中心平面的含有六边形铁氧体粉末的磁性层 平均表面粗糙度为1nm至4nm，衬垫包含20重量％以上的聚对苯二甲酸乙二醇酯。

公开(公告)号：US20040072036A1

公开(公告)日：2004-04-15

申请号：US10650302

申请日：2003-08-28

Applicant: Seagate Technology LLC

Inventor： Yukiko Kubota ,  Duane Clifford Karns ,  Kurt Warren Wierman

IPC: G11B005/66

CPC classification number: G11B5/732 ,  G11B5/11 ,  G11B5/653 ,  G11B5/656 ,  G11B5/667 ,  G11B2005/001

Abstract: A magnetic recording medium for communication with a transducer moving relative to the recording medium along a line of relative transducer motion. The magnetic recording medium has a substrate with a substrate surface, and a seed layer on the substrate surface. The magnetic recording medium also has a soft magnetic underlayer on the seed layer. The soft magnetic underlayer includes a magnetic material having a magnetic moment larger than 1.7 teslas. The soft magnetic underlayer has a texture that provides a magnetic easy axis that has an easy axis alignment parallel to the line of relative transducer motion. A magnetic storage layer is on the soft magnetic underlayer.

Abstract translation: 一种磁记录介质，用于与沿相对传感器运动线相对于记录介质移动的换能器通信。 磁记录介质具有基板表面的基板和基板表面上的种子层。 磁记录介质在种子层上也具有软磁性底层。 软磁性底层包括磁矩大于1.7特斯拉的磁性材料。 软磁性底层具有提供易于轴线平行于相对传感器运动线的易磁化轴的纹理。 磁性存储层位于软磁性底层上。

公开(公告)号：US20040072033A1

公开(公告)日：2004-04-15

申请号：US10629766

申请日：2003-07-30

Applicant: TDK CORPORATION

Inventor： Tsutomu Ide ,  Katsuhiko Yamazaki

IPC: G11B005/66

CPC classification number: G11B5/735 ,  Y10T428/257

Abstract: A magnetic recording medium comprises a back coat layer containing carbon black and alumina as nonmagnetic powder. The relationship between the abrasivity (y) in microns of the back coat layer and the alumina content (x) parts by weight to 100 parts by weight of non-magnetic powder excluding alumina satisfies four equations ynull4.6xnull12.2, ynull4.1xnull10.8, ynull13, ynull17. The abrasivity is measured such that an edge of a prismatic Sendust bar is pushed perpendiculary onto the back coat layer such that the magnetic recording medium_is pressed at an approaching angle of 12 degree, and the magnetic recording medium is supported by a tension of 0.526 N/cm per unit width and a 50-m length thereof is moved back and forth one time over the Sendust bar at a running speed of 0.3 m/s.

Abstract translation: 磁记录介质包括含有炭黑和氧化铝作为非磁性粉末的背涂层。 背涂层的研磨性（y）与氧化铝含量（x）重量份之间的关系与100重量份除氧化铝之外的非磁性粉末的关系满足四个等式y <= 4.6x + 12.2，y> = 4.1x + 10.8，y> = 13，y <= 17。 测量磨损性，使得棱柱形塞斯特斯特棒的边缘被垂直地推到背涂层上，使得磁记录介质以12度的接近角度被按压，并且磁记录介质由0.526N / 厘米每单位宽度，其长度为50米的长度以0.3米/秒的运行速度在Sendust杆上前后移动一次。

公开(公告)号：US20040053078A1

公开(公告)日：2004-03-18

申请号：US10607570

申请日：2003-06-27

Applicant: Kabushiki Kaisha Toshiba

Inventor： Akira Kikitsu ,  Junichi Akiyama ,  Tadashi Kai ,  Toshihiko Nagase ,  Tomoyuki Maeda ,  Hisanori Aikawa ,  Soichi Oikawa ,  Yoichiro Tanaka

IPC: G11B005/66

CPC classification number: G11B5/66

Abstract: This invention uses a perpendicular magnetic recording medium in which first and second magnetic recording layers are coupled by antimagnetic exchange coupling, or a longitudinal magnetic recording medium in which three or more predetermined interlayers are formed between first and second magnetic recording layers, and these layers are coupled by antimagnetic exchange coupling.

Abstract translation: 本发明使用垂直磁记录介质，其中第一和第二磁记录层通过防磁交换耦合耦合，或纵向磁记录介质，其中在第一和第二磁记录层之间形成三个或更多个预定的中间层，并且这些层是 通过抗磁交换耦合耦合。