公开(公告)号：EP0123258A3

公开(公告)日：1985-09-18

申请号：EP84104340

申请日：1984-04-17

Applicant: TORAY INDUSTRIES, INC.

Inventor： Tanaka, Kazuhiro ,  Kawakami, Ken-ichi ,  Yoshii, Toshiya

IPC: G11B05/82 ,  G11B05/70 ,  G11B05/64 ,  B32B27/08

CPC classification number: G11B5/825 ,  G11B5/7315 ,  Y10S428/90 ,  Y10S428/91 ,  Y10T428/24372 ,  Y10T428/24612 ,  Y10T428/24942 ,  Y10T428/24975 ,  Y10T428/26 ,  Y10T428/264 ,  Y10T428/265 ,  Y10T428/31786 ,  Y10T428/31797 ,  Y10T428/31938

Abstract: @ A magnetic recording disk which comprises (1) a three-layered laminate consisting of a core layer of a biaxially oriented polyolefinfilm which has a birefringence of not more than 0.01 and an amorphous-region orientation coefficient of not more than 0.2 and two outer layers of a biaxially oriented polyester film adhered to said core layer, and (2) a magnetic layer formed on at least one side of the laminate. The magnetic recording disk of the invention undergoes only slight dimensional changes with variations in humidity and temperature, and the dimensional changes are isotropic in the plane. The disk therefore has an excellent electromagnetic properties such as output fluctuation and outbreak of dropouts caused by the environmental change.

公开(公告)号：WO1998008217A1

公开(公告)日：1998-02-26

申请号：PCT/JP1997002927

申请日：1997-08-22

Applicant: SONY CORPORATION ,  NIPPON ZEON CO., LTD. ,  OYANAGI, Eiki ,  SASA, Takeshi ,  IMAI, Yasuyuki ,  TAKINO, Hiroshi ,  KOHARA, Teiji ,  OSHIMA, Masayoshi

Inventor： SONY CORPORATION ,  NIPPON ZEON CO., LTD.

IPC: G11B05/82

CPC classification number: G11B23/0021 ,  B29C70/64 ,  C08F32/04 ,  G11B5/59633 ,  G11B5/6011 ,  G11B5/7315 ,  G11B5/82 ,  G11B5/8404 ,  G11B21/21 ,  Y10S428/913 ,  Y10T428/21

Abstract: A disc medium substrate which is made of resin and used for a disc, for instance a magnetic disc, on/from which information is recorded/reproduced with a floating head. Protrusions higher than 50 nm are not formed on the surface of the substrate which is scanned by the floating head. The substrate is so molded that the number of particles in the molding material whose particle diameters are larger than 5 mu m is not more than 10000/g. The molding can be injection molding. Thermoplastic norvolnene system resin can be employed as the molding material. Projections and recesses corresponding to recording tracks may be provided on the substrate.

Abstract translation: 由树脂制成并用于盘的磁盘介质基板，例如磁盘，用浮动头记录/再现信息。 在由浮动头扫描的基板的表面上不形成高于50nm的突起。 将基板成形为粒径大于5μm的成型材料中的粒子数不超过10000个/ g。 成型可以是注塑成型。 可以使用热塑性降冰片烯系树脂作为成型材料。 可以在基板上设置与记录轨迹相对应的突出和凹陷。

公开(公告)号：WO1996010821A1

公开(公告)日：1996-04-11

申请号：PCT/US1995013052

申请日：1995-09-29

Applicant: MAXTOR CORPORATION

Inventor： MAXTOR CORPORATION ,  VALENT, James, A.

IPC: G11B05/82

CPC classification number: G11B21/083 ,  G11B5/035 ,  G11B5/4886 ,  G11B5/5534 ,  G11B5/59611 ,  G11B5/59644 ,  G11B5/5965 ,  G11B5/59655 ,  G11B5/59683

Abstract: A method and apparatus for creating a position error signal (PES) voltage v. track distance curve for the head (20) of a hard disk drive (10). The disk (12) has a dedicated track which contains a plurality of servo bits (34) that allow the head to be centered with the centerline of the track. The dedicated track also has a number of calibration bits (50-60) each embedded at a known location off-set from the track centerline. The PES voltage v. track distance curve is generated by reading each calibration bit and storing the corresponding amplitude of the position error signal in a memory device of the disk drive. Each calibration bit is located from the track centerline a distance that is different from the other calibration bits so that there are provided multiple points on the track curve.

Abstract translation: 一种用于创建硬盘驱动器（10）的头部（20）的位置误差信号（PES）电压v。跟踪距离曲线的方法和装置。 磁盘（12）具有专用磁道，该专用磁道包含允许磁头与磁道的中心线对中的多个伺服位（34）。 专用轨道还具有多个校准位（50-60），每个校准位嵌入在离轨道中心线偏离的已知位置。 通过读取每个校准位并将位置误差信号的相应幅度存储在磁盘驱动器的存储器件中来产生PES电压v。轨迹距离曲线。 每个校准位从轨道中心线的距离与其他校准位不同，以便在曲线曲线上提供多个点。

公开(公告)号：WO1993024925A1

公开(公告)日：1993-12-09

申请号：PCT/JP1993000120

申请日：1993-02-02

Applicant: NIHON CEMEMT CO., LTD. ,  NIHON CERATEC CO., LTD. ,  KAMIAKA, Hideto ,  KISHI, Yukio

Inventor： NIHON CEMEMT CO., LTD. ,  NIHON CERATEC CO., LTD.

IPC: G11B05/82

CPC classification number: G11B5/7315 ,  C04B35/111 ,  C04B35/46 ,  C04B35/6455 ,  G11B5/8404 ,  H01G4/06 ,  H01G4/08 ,  H01L21/4807 ,  H01L23/15 ,  H01L2924/0002 ,  H01L2924/09701 ,  H05K1/0306 ,  Y10T29/41 ,  Y10T428/249953 ,  Y10T428/249967 ,  Y10T428/249978 ,  H01L2924/00

Abstract: A ceramic substrate for hard disks, thin film chip capacitors, and hybrid ICs, of titanium oxide or aluminum oxide, has an extremely small number of pores of larger than 3 mu m diameter in the surface. The substrate is fabricated by burning finely powdered high-purity titanium oxide or high-purity aluminum oxide in the air, an inert atmosphere at 1,100-1,300 DEG C, or a reducing atmosphere at 1,200-1,400 DEG C and then, subjecting it to an HIP process.

Abstract translation: 用于硬盘，薄膜片状电容器和混合IC的氧化钛或氧化铝的陶瓷衬底在表面上具有极小数目的孔径大于3μm的孔。 通过将空气中的细粉末状高纯度氧化钛或高纯度氧化铝在1100-1300℃的惰性气氛中或在1200-1400℃的还原气氛中进行烧制，然后将其 HIP流程。

公开(公告)号：WO1998027548A1

公开(公告)日：1998-06-25

申请号：PCT/JP1996003690

申请日：1996-12-18

Applicant: HITACHI, LTD. ,  YONEMURA, Shinji ,  TOKISUE, Hiromitsu ,  TANAKA, Hideaki ,  TAKEUCHI, Yoshinori

Inventor： HITACHI, LTD.

IPC: G11B05/82

CPC classification number: G11B5/6005 ,  G11B5/4886 ,  G11B5/82 ,  G11B19/02 ,  G11B19/04 ,  G11B19/20

Abstract: In a CSS region of a magnetic disk, a means for setting the flying height of a magnetic slider in the CSS region higher than that in a data region is provided. The surface of the CSS region of the magnetic disk is rough. This prevents the attraction of the magnetic disk and the magnetic head slider to each other when the magnetic disk apparatus is stopped, and ensures the slide resistance of the CSS region. A magnetic disk apparatus mounted with such a magnetic disk has an excellent reliability and achieves a high recording density even when the flying height of the magnetic head slider is small.

Abstract translation: 在磁盘的CSS区域中，提供了用于将CSS区域中的磁性滑块的飞行高度设置为高于数据区域中的高度的装置。 磁盘的CSS区域的表面是粗糙的。 这防止了当磁盘装置停止时磁盘和磁头滑块相互吸引，并且确保了CSS区域的滑动阻力。 安装有这种磁盘的磁盘装置具有优异的可靠性，并且即使当磁头滑块的飞行高度小时也能实现高记录密度。

公开(公告)号：WO1994011867A1

公开(公告)日：1994-05-26

申请号：PCT/JP1993001593

申请日：1993-11-04

Applicant: MITSUBISHI KASEI CORPORATION ,  SEO, Yuzo ,  MAEDA, Shuichi

Inventor： MITSUBISHI KASEI CORPORATION

IPC: G11B05/82

CPC classification number: G11B5/59677 ,  G11B5/738 ,  G11B5/82 ,  G11B5/825

Abstract: A disklike magnetic recording medium having a magnetic layer containing a magnetic substance on a non-magnetic support, and a layer containing a pigment whose optical characteristics are changed by the irradiation of energy beam and interposed between the non-magnetic support and the magnetic layer. A continuous servo signal is recorded on the concentric tracks on the pigment-containing layer in accordance with variation of the optical characteristics of the pigment. This medium can be manufactured at a low cost, and has a large recordable area. Accurate tracking can be done by a single detector.

Abstract translation: 具有在非磁性载体上含有磁性物质的磁性层的磁盘状磁记录介质，以及含有通过能量束的照射而改变其光学特性的颜料的介于非磁性载体和磁性层之间的层。 根据颜料的光学特性的变化，连续的伺服信号被记录在含颜料层的同心轨道上。 该介质可以低成本地制造，并且具有大的可记录面积。 可以通过单个检测器进行精确跟踪。

公开(公告)号：WO1993012520A1

公开(公告)日：1993-06-24

申请号：PCT/US1992010478

申请日：1992-12-10

Applicant: BAR-GADDA, Ronny ,  CARGILL, Robert, L.

IPC: G11B05/82

CPC classification number: B82Y10/00 ,  G11B5/00 ,  G11B5/6005 ,  G11B5/7315 ,  G11B5/743 ,  G11B5/82 ,  G11B5/8404 ,  G11B5/855 ,  G11B11/10502 ,  G11B11/10582 ,  G11B11/10584

Abstract: In a magnetic disk medium (1), a substrate (2) is etched to have a designed, controlled topography (6). A magnetic recording medium (3) and a protective layer (4) are provided over the substrate. A method for controlling production of the surface characteristics of the magnetic disk medium is controlled to optimize surface characteristics for use of the magnetic disk medium in a magnetic disk apparatus that reads information stored on the magnetic disk medium.

Abstract translation: 在磁盘介质（1）中，蚀刻衬底（2）以具有设计的受控形貌（6）。 磁记录介质（3）和保护层（4）设置在基板上。 控制用于控制磁盘介质的表面特性的产生的方法，以便在读取存储在磁盘介质上的信息的磁盘装置中优化使用磁盘介质的表面特性。

公开(公告)号：WO1998012698A1

公开(公告)日：1998-03-26

申请号：PCT/JP1996002720

申请日：1996-09-20

Applicant: HITACHI, LTD. ,  TERAKADO, Masatomo ,  ISHIKAWA, Akira ,  MATSUDA, Yoshibumi ,  INAGAKI, Joe ,  YAHISA, Yotsuo ,  DAVID, Djuliano, Djayaprawira ,  NARISHIGE, Shinji

Inventor： HITACHI, LTD.

IPC: G11B05/82

CPC classification number: G11B5/1871 ,  G11B5/6005 ,  G11B5/82 ,  G11B5/8404 ,  G11B5/8408

Abstract: A method of producing a magnetic recording disk medium, which comprises the step of forming island-like protrusions by sputtering a target consisting principally of an intermetallic compound on a substrate on which a magnetic alloy film is formed. This method can shorten a single processing time, improve thermal stability of the protrusions, and maintain the shape of these protrusions. The resulting magnetic disk medium is not likely to adhere to the head in the case of a narrow head gap. This method can be also applied to the formation of island-like protrusions on the opposed surface of the magnetic head to a slider. A magnetic disk apparatus having a high recording density and reliable lubricity can be obtained by applying the resulting magnetic disk medium or magnetic head.

Abstract translation: 一种磁记录盘介质的制造方法，其特征在于，在形成有磁性合金膜的基板上溅射主要由金属间化合物构成的靶，形成岛状突起的工序。 该方法可以缩短单个处理时间，提高突起的热稳定性，并且保持这些突起的形状。 在窄的磁头间隙的情况下，所得的磁盘介质不可能附着在磁头上。 该方法也可以应用于在磁头的相对表面上形成岛状突起到滑块。 通过施加所得到的磁盘介质或磁头，可以获得具有高记录密度和可靠润滑性的磁盘装置。

公开(公告)号：WO1996023301A1

公开(公告)日：1996-08-01

申请号：PCT/GB1996000110

申请日：1996-01-23

Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION ,  IBM UNITED KINGDOM LIMITED

Inventor： INTERNATIONAL BUSINESS MACHINES CORPORATION ,  IBM UNITED KINGDOM LIMITED ,  NGUYEN, Thao, Anh

IPC: G11B05/82

CPC classification number: G11B5/82 ,  G11B5/8404

Abstract: A magnetic recording disk has a textured test band (160) that is radially spaced from the textured landing zone (158) and that typically has laser-induced bumps with an average height substantially different from the average height of the laser-induced bumps in the textured landing zone. The bumps in both the test band and the textured band are formed in spiral tracks because the disk is simultaneously rotated and translated radially while the texturing laser is pulsing the disk. However, because the bumps in the textured band are not formed until after the average height of the bumps in the test band have been measured by a second analyzing laser, the two spiral tracks are separate and discontinuous.

Abstract translation: 磁记录盘具有纹理测试带（160），纹理测试带（160）与纹理化着陆区域（158）径向间隔开，并且通常具有激光诱发的凸起，平均高度与激光引起的凸块的平均高度大致不同 纹理着陆区。 测试带和纹理带中的凸起形成在螺旋形轨道中，因为在纹理化激光器脉冲盘的同时盘同时旋转和平移。 然而，由于在通过第二分析激光测量了测试带中的凸块的平均高度之后直到形成纹理带之后才形成凸起，所以两个螺旋形轨迹是分离的和不连续的。

公开(公告)号：WO1993021629A1

公开(公告)日：1993-10-28

申请号：PCT/US1993003554

申请日：1993-04-14

Applicant: TULIP MEMORY SYSTEMS, INC.

Inventor： TULIP MEMORY SYSTEMS, INC. ,  WEIR, Richard, D. ,  NELSON, Carl, W. ,  HEIMAN, Neil, D.

IPC: G11B05/82

CPC classification number: G11B5/7325 ,  G11B5/82 ,  G11B5/8404 ,  Y10S428/90 ,  Y10T428/265

Abstract: A magnetic-recording disk (100) comprising a metal substrate disk having a textured annular first surface area (103) with an outer diameter which is substantially less than the diameter of the metal substrate is disclosed herein. The metal substrate disk further has a smooth annular second surface area (104) between the first surface area's outer diameter and the metal substrate's circumferential edge. The textured annular first surface area (103) has a laser-etched circular pattern. Furthermore the metal disk substrate of an aluminum alloy, a titanium alloy, or an austenitic stainless steel has a thin-film coating selected from the group consisting of nitrides, carbides, or borides of titanium, zirconium, hafnium, vanadium, niobium, tantalum, chromium, molybdenum or tungsten.

Abstract translation: 本文公开了一种磁记录盘（100），其包括具有纹理的环形第一表面区域（103）的金属基板盘，其外径基本上小于金属基板的直径。 金属基板盘在第一表面区域的外径和金属基板的周向边缘之间还具有平滑的环形第二表面区域（104）。 纹理化的环形第一表面区域（103）具有激光蚀刻的圆形图案。 此外，铝合金，钛合金或奥氏体不锈钢的金属盘基板具有选自钛，锆，铪，钒，铌，钽等的氮化物，碳化物或硼化物的薄膜涂层， 铬，钼或钨。