公开(公告)号：EP0175389A3

公开(公告)日：1988-05-25

申请号：EP85111962

申请日：1985-09-20

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Sagoi, Masayuki c/o Patent Division ,  Kawashima, Noritsugu c/o Patent Division ,  Tanaka, Yoichiro c/o Patent Division ,  Sekine, Kunio c/o Patent Division

IPC: G11B05/72 ,  G11B05/71 ,  G11B05/706

CPC classification number: G11B5/64 ,  G11B5/71 ,  G11B5/72 ,  G11B5/725 ,  Y10S428/90 ,  Y10T428/26

Abstract: A magnetic recording medium in which a silicon nitride film (33) is formed on a magnetic recording layer (32) having an axis of easy magnetization in the direction essentially perpendicular to its own layer surface. The magnetic recording layer (32) is a metallic magnetic film such as a Co-Cr containing alloy. The silicon nitride film (33) is preferably in a state in which the number of nitrogen atoms is less than four thirds of the number of silicon atoms. A lubricant layer (35) such as a layer of fluorocarbon can be formed on the silicon nitride film (33).

Abstract translation: 一种磁记录介质，其中在基本垂直于其自身层表面的方向上具有易磁化轴的磁记录层（32）上形成氮化硅膜（33）。 磁记录层（32）是金属磁性膜，例如含有Co-Cr的合金。 氮化硅膜（33）优选处于氮原子数小于硅原子数的三分之三的状态。 可以在氮化硅膜（33）上形成诸如氟碳化合物层的润滑层（35）。

公开(公告)号：EP0129721A3

公开(公告)日：1986-09-10

申请号：EP84105933

申请日：1984-05-25

Applicant: International Business Machines Corporation

Inventor： Ko, Ming ,  Oxsen, Michael Eugene ,  Prime, Robert Bruce

IPC: G11B05/70 ,  G11B05/84 ,  G11B05/72

CPC classification number: G11B5/842 ,  G11B5/7028 ,  G11B5/72 ,  Y10S428/90 ,  Y10T428/249978 ,  Y10T428/24998 ,  Y10T428/249986 ,  Y10T428/31609 ,  Y10T428/31931 ,  Y10T428/31935

Abstract: @ A method is described of fabricating a magnetic recording element comprising applying a layer of a flowable magnetic material to a substrate, said material comprising magnetic particles dispersed in a curable binder; curing the magnetic material of the applied layer; and thereafter applying a lubricant to the surface of the magnetic layer; said method being characterised by the step of addding a thermally degradable additive to the flowable magnetic material, said additive being degraded during curing of the material and producing a plurality of microvoids in the surface of the layer capable of enhancing retention of the lubricant on said surface. More succinctly there is described a heat curable magnetic coating mixture contains one or more polymeric additives selected to thermally oxidize during coating cure to create a plurality of microvoids in the cured coating as an aid to increase the retention of a lubricant which is applied to the cured coating.

公开(公告)号：WO1997032302A1

公开(公告)日：1997-09-04

申请号：PCT/JP1996000502

申请日：1996-03-01

Applicant: HITACHI, LTD. ,  MATSUNUMA, Satoshi ,  HOSOE, Yuzuru

Inventor： HITACHI, LTD.

IPC: G11B05/72

CPC classification number: G11B5/72

Abstract: A magnetic recording medium comprising an aluminum substrate (5) and, formed thereon in order, a chromium underlaying film (4), a magnetic recording film (3), a protective amorphous carbon film (2), and a layer of a mixture of a fluoroorganic lubricant with an electron acceptor. The acceptor traps exo electrons formed by the sliding contact of the magnetic head with the disk of a recording device so as to prevent the decomposition of the lubricant induced by the formed electrons, thus providing a magnetic recording medium having a prolonged sliding resistance and excellent durability and weathering resistance.

Abstract translation: 一种磁记录介质，包括铝基板（5），并且依次形成铬底垫膜（4），磁记录膜（3），保护性无定形碳膜（2）以及混合层 具有电子受体的氟代有机润滑剂。 受体捕获由磁头与记录装置的盘的滑动接触形成的电子，以防止由形成的电子感应的润滑剂的分解，从而提供具有延长的滑动阻力和优异的耐久性的磁记录介质 和耐候性。

公开(公告)号：WO1988002168A1

公开(公告)日：1988-03-24

申请号：PCT/US1987002243

申请日：1987-09-04

Applicant: UNISYS CORPORATION

Inventor： UNISYS CORPORATION ,  BERTI, Eugenio, F. ,  HERTE, Lawrence, F.

IPC: G11B05/72

CPC classification number: G11B13/04 ,  G11B5/72 ,  G11B5/82 ,  G11B23/34

Abstract: Embodiments disclose magnetic recording compositions (e.g., as coated on a rigid data disk or like substrate), particularly organic particulate compositions with thin metallic overcoatings for such.

Abstract translation: 实施例公开了磁记录组合物（例如，涂覆在刚性数据盘或类似衬底上），特别是具有用于此的薄金属外涂层的有机颗粒组合物。

公开(公告)号：WO1997004447A1

公开(公告)日：1997-02-06

申请号：PCT/US1996011818

申请日：1996-07-17

Applicant: SEAGATE TECHNOLOGY, INC.

Inventor： SEAGATE TECHNOLOGY, INC. ,  HWANG, Kuo-Hsing ,  CHEN, Xiaohua ,  KHAZANOV, Alexander, Boris ,  HAFID, Abdellah ,  TAN, Stella ,  NGUYEN, Quy, Cuu

IPC: G11B05/72

CPC classification number: C23C14/0605 ,  G11B5/72 ,  G11B5/8408 ,  Y10S428/90 ,  Y10T428/30

Abstract: A magnetic disc (12) for use in a magnetic disc drive (20) is provided. The magnetic disc (12) includes a recording surface (36) wherein the recording surface (36) includes a dual phase carbon overcoat (42). The dual phase carbon overcoat (42) includes an amorphous carbon film (70) sputtered on a magnetic layer (40). A doped amorphous carbon film (72) is sputtered on the amorphous carbon film (70). The dual phase carbon overcoat (42) has demonstrated improved hardness, reduced stiction and superior corrosion resistance over the prior art. A method of manufacturing the magnetic disc (12) is also provided. The method includes providing a sputtering appratus (50) having a process chamber (52), providing a partially manufactured magnetic disc (68) having a magnetic layer (40) thereon, placing the partially manufactured magnetic disc (68) within the process chamber (52), sputtering an amorphous carbon film (70) on the magnetic layer (40), and sputtering a doped amorphous carbon film (72) on the amorphous carbon film (70). The process reduces throughput inefficiencies due to down time cleaning and avoids carbon induced damage to the discs (12).

Abstract translation: 提供一种用于磁盘驱动器（20）的磁盘（12）。 磁盘（12）包括记录表面（36），其中记录表面（36）包括双相碳外涂层（42）。 双相碳外涂层（42）包括溅射在磁性层（40）上的无定形碳膜（70）。 将掺杂的无定形碳膜（72）溅射在无定形碳膜（70）上。 相对于现有技术，双相碳外涂层（42）具有改进的硬度，降低的粘性和优异的耐腐蚀性。 还提供了一种制造磁盘（12）的方法。 该方法包括提供具有处理室（52）的溅射装置（50），提供其上具有磁性层（40）的部分制造的磁盘（68），将部分制造的磁盘（68）放置在处理室（ 52），在所述磁性层（40）上溅射无定形碳膜（70），并在所述无定形碳膜（70）上溅射掺杂的无定形碳膜（72）。 该过程由于停机时间清洁而降低了生产效率低下，并避免了碳导致的盘损坏（12）。

公开(公告)号：WO1981001904A1

公开(公告)日：1981-07-09

申请号：PCT/JP1980000321

申请日：1980-12-23

Applicant: FUJITSU LTD ,  ISHIDA S ,  KUMAI T ,  HAMADA M

Inventor： FUJITSU LTD

IPC: G11B05/72

CPC classification number: G11B5/71 ,  G11B5/7023 ,  G11B5/72 ,  G11B5/725 ,  Y10S428/90 ,  Y10T428/24909 ,  Y10T428/24917 ,  Y10T428/31935

Abstract: A magnetic recording medium having a magnetic recording layer formed on at least one side of a permanent base, the magnetic recording layer containing a contact layer comprising a polymer material containing at least 5 to 30 wt% polyvinyl alkyl ether based on the total polymer material weight and having incorporated therein a lubricant to improve the abrasion resistance of the magnetic recording medium.

Abstract translation: 一种磁记录介质，其具有形成在永久性基底的至少一侧上的磁记录层，所述磁记录层包含基于总聚合物材料重量的包含至少5至30重量％的聚乙烯基烷基醚的聚合物材料的接触层 并且其中并入有润滑剂以改善磁记录介质的耐磨性。

公开(公告)号：WO1990006575A1

公开(公告)日：1990-06-14

申请号：PCT/EP1989001223

申请日：1989-10-16

Applicant: SIEMENS AKTIENGESELLSCHAFT ,  LÖFFLER, Franz, Josef ,  STEPHANI, Dietrich

Inventor： SIEMENS AKTIENGESELLSCHAFT

IPC: G11B05/72

CPC classification number: G11B5/725 ,  G11B5/722

Abstract: A recording medium (2) contains a magnetizable storage layer (7) covered with a protective coating (9) of carbon (C) or a carbon (C) compound. An antifriction layer (11) containing a fluorocarbon is a) containing a fluorocarbon is applied to the protective coating. To ensure good wettability of the protective coating, fluorine (F) is incorporated in at least one of the surface regions (9a) of the protective coating (9) facing the antifriction coating (11). The fluorine can be incorporated at the same time as the C or the C compound is deposited; or it may be incorporated later in a temporary coating of C or the C compound from the free surface.

Abstract translation: 记录介质（2）包含用碳（C）或碳（C）化合物的保护涂层（9）覆盖的可磁化存储层（7）。 含有碳氟化合物的抗磨层（11）是a）将含氟碳氟化合物施加到保护涂层上。 为了确保保护涂层的良好润湿性，氟（F）被引入到面向抗磨涂层（11）的保护涂层（9）的至少一个表面区域（9a）中。 可以在沉积C或C化合物的同时引入氟; 或者其可以稍后并入C或C化合物的自由表面的临时涂层中。

公开(公告)号：WO1988005591A1

公开(公告)日：1988-07-28

申请号：PCT/US1988000215

申请日：1988-01-26

Applicant: DYNAMIC DISK, INC.

Inventor： DYNAMIC DISK, INC. ,  WRAY, Daniel, X.

IPC: G11B05/72

CPC classification number: G11B5/725

Abstract: Improved recording medium and method for producing the same in which a thin lubricant film is applied directly to the surface of the recording medium without the necessity of intermediate layers or additional decomposition steps. The lubricant coating, which is a single monolayer of between about 30 and about 300 angstroms in thickness, is chemically bonded to the surface of the recording medium and the molecules of the film are oriented substantially normal to the surface of the recording medium. The backbone of the molecule of the film is selected from a number of different polymeric materials to provide a desired characteristic to the film surface, such as lubricity, and the distal end of the molecule is preferably provided with a strong electronegative group so that the surface of the magnetic medium is strongly electronegative which further protects against head crash and abrasion due to contact with the magnetic slider head. The film is applied directly to a reactive magnetizable metal surface of the media. The molecules of the film to be applied to the surface are brought to the surface in solubilized form since in this form the molecules are more soluble in the solution than they are in themselves thus promoting orientation of the molecule when the terminal bonding group of the molecule reacts with the surface of the recording medium.

Abstract translation: 改进的记录介质及其制造方法，其中薄的润滑剂膜直接施加到记录介质的表面，而不需要中间层或附加的分解步骤。 作为厚度为约30至约300埃的单一单层的润滑剂涂层化学键合到记录介质的表面，并且膜的分子基本上垂直于记录介质的表面定向。 薄膜分子的主链选自多种不同的聚合物材料，以提供薄膜表面所需的特性，例如润滑性，分子的末端优选具有强电负性基团，使得表面 的磁介质是强电负性的，这进一步防止由于与磁性滑动头接触而导致头部碰撞和磨损。 该膜直接施加到介质的反应性可磁化金属表面。 要施加到表面的膜的分子以溶解形式被带到表面，因为在这种形式中，分子比它们本身更易于溶解，因此当分子的末端键合基团促进分子的取向时 与记录介质的表面反应。

公开(公告)号：WO1987001501A1

公开(公告)日：1987-03-12

申请号：PCT/US1986001652

申请日：1986-08-06

Applicant: MEMOREX CORPORATION

Inventor： MEMOREX CORPORATION ,  FREW, Duncan, W. ,  SHADWICK, Robert, P.

IPC: G11B05/72

CPC classification number: G11B5/725 ,  G11B5/84 ,  Y10S428/90 ,  Y10T428/31544

Abstract: Magnetic recording media wherein the record surface is coated with an isocyanate lubricant (and, preferably, a supercoat of like lubricant), such lubrication being adapted to inhibit spin-off and like depletion, despite frequent head-contact, while exhibiting good durability, wear resistance and recording characteristics over extended life (computer applications).

公开(公告)号：WO1999003099A1

公开(公告)日：1999-01-21

申请号：PCT/US1997018121

申请日：1997-10-08

Applicant: SEAGATE TECHNOLOGY, INC. ,  HUANG, Liji

Inventor： SEAGATE TECHNOLOGY, INC.

IPC: G11B05/72

CPC classification number: G11B5/725 ,  G11B5/72 ,  Y10S428/90 ,  Y10T428/24975 ,  Y10T428/265 ,  Y10T428/30

Abstract: A magnetic recording medium is provided with multilayered carbon-containing protective overcoats having different surface polarities and electrical conductivities, thereby enabling optimum performance to be tailored for different drive programs. Embodiments include a first protective overcoat comprising hydrogenated carbon and a second protective overcoat comprising graphitic carbon or amophous carbon nitride.

Abstract translation: 磁记录介质设置有具有不同表面极性和电导率的多层含碳保护性外涂层，从而能够为不同的驱动程序定制最佳性能。 实施方案包括包含氢化碳的第一保护外涂层和包含石墨碳或氨氮碳氮化物的第二保护外涂层。