公开(公告)号：WO1997045834A1

公开(公告)日：1997-12-04

申请号：PCT/US1997009375

申请日：1997-05-29

Applicant: AKASHIC MEMORIES CORPORATION ,  VEERASAMY, Vijayen ,  WEILER, Manfred ,  LI, Eric

Inventor： AKASHIC MEMORIES CORPORATION

IPC: G11B05/72

CPC classification number: H01J37/32357 ,  C03C17/22 ,  C03C2217/282 ,  C03C2218/151 ,  G11B5/72 ,  G11B5/8408 ,  H01J27/18 ,  H01J37/08

Abstract: The invention provides systems and methods for the deposition of an improved diamond-like carbon material, particularly for the production of magnetic recording media. The diamond-like carbon material of the present invention is highly tetrahedral, that is, it features a large number of the sp carbon-carbon bonds which are found within a diamond crystal lattice. The material is also amorphous, providing a combination of short-range order with long-range disorder, and can be deposited as films which are ultrasmooth and continuous at thicknesses substantially lower than known amorphous carbon coating materials. The carbon protective coatings of the present invention will often be hydrogenated. In a preferred method for depositing of these materials, capacitive coupling forms a highly uniform, selectively energized stream of ions from a dense, inductively ionized plasma. Such inductive ionization is enhanced by a relatively slow moving (or "quasi-static") magnetic field, which promotes resonant ionization and ion beam homogenization.

Abstract translation: 本发明提供用于沉积改进的类金刚石碳材料的系统和方法，特别是用于生产磁记录介质。 本发明的类金刚石碳材料是高度四面体的，即在金刚石晶格内存在大量的sp 3碳 - 碳键。 该材料也是无定形的，提供短距离顺序与远程障碍的组合，并且可以以基本上低于已知无定形碳涂层材料的厚度超薄且连续的膜沉积。 本发明的碳保护涂层通常将被氢化。 在用于沉积这些材料的优选方法中，电容耦合形成来自致密的感应电离等离子体的高度均匀的选择性激励的离子流。 这种感应电离通过相对较慢的移动（或“准静态”）磁场增强，这促进了共振电离和离子束均匀化。

公开(公告)号：WO1993010526A1

公开(公告)日：1993-05-27

申请号：PCT/JP1992001510

申请日：1992-11-18

Applicant: SONY CORPORATION ,  CHIBA, Kazunobu ,  SATO, Kenichi ,  ARISAKA, Yuichi ,  KONDO, Hirofumi ,  YAMADA, Yukari

Inventor： SONY CORPORATION

IPC: G11B05/72

CPC classification number: G11B5/725 ,  G11B5/72 ,  G11B5/735 ,  G11B5/8408 ,  Y10S428/90 ,  Y10T428/24355 ,  Y10T428/265 ,  Y10T428/30 ,  Y10T428/31721 ,  Y10T428/31725 ,  Y10T428/31786

Abstract: This invention discloses a magnetic recording medium using a metal magnetic thin film as a magnetic layer. An oxide layer is formed on the surface of the metal magnetic thin film, and a protective layer is formed further on this oxide layer. The thickness of the oxyde layer on the metal magnetic thin film is 20 to 230 Å, the thickness of the protective layer is 20 to 230 Å, and the total thickness of the oxide layer and the protective layer is 40 to 250 Å. Before the protective layer is formed, the surface may be bombarded to improve adhesion of the protective layer. A lubricant can be applied on the surface of the protective layer, as well. Examples of the lubricants are carboxylic acid/perfluoroalkyl esters, ester compounds such as perfluoropolyethers containing a carboxy group, and amine salt compounds. On the other hand, the back of a non-magnetic support as a substrate has a mean coarseness Ra at the center line and protrusions having a maximum height Rmax which satisfy the following relation: 0.0015 νm « Ra « 0.0070 νm, 0.015 « Rmax « 0.070 νm.

公开(公告)号：WO1998007145A1

公开(公告)日：1998-02-19

申请号：PCT/US1996012998

申请日：1996-08-09

Applicant: SEAGATE TECHNOLOGY, INC. ,  FALCONE, Samuel, J.

Inventor： SEAGATE TECHNOLOGY, INC.

IPC: G11B05/72

CPC classification number: C10M107/38 ,  G11B5/725

Abstract: A water or aqueous soluble salt of a perfluoro polyether alcohol is applied to form a lubricant topcoat on a magnetic recording medium. Suitable soluble salts include the sodium salt of a perfluoro polyether diol.

Abstract translation: 施加全氟聚醚醇的水或水溶性盐以在磁记录介质上形成润滑剂面漆。 合适的可溶性盐包括全氟聚醚二醇的钠盐。

公开(公告)号：WO1997015049A1

公开(公告)日：1997-04-24

申请号：PCT/JP1995002132

申请日：1995-10-18

Applicant: HITACHI, LTD. ,  NAKAKAWAJI, Takayuki ,  SHOUJI, Mituyoshi ,  TAKAMURA, Tomoe ,  SASAKI, Hiroshi ,  IMAZEKI, Shuji ,  ITO, Yutaka

Inventor： HITACHI, LTD.

IPC: G11B05/72

CPC classification number: G11B5/725 ,  Y10S428/90 ,  Y10T428/24355 ,  Y10T428/30 ,  Y10T428/3154 ,  Y10T428/31544

Abstract: A magnetic disk having a lubricating film that covers a data region and a CSS region formed on the surface thereof. The lubricating film secures low tackiness and low sliding friction in the data region, and secures CSS durability in the CSS region. Since the problem of lubrication between the magnetic disk and a magnetic head can be avoided either in normal operation or in the event of an abrupt stop of the disk drive, high reliability can be secured. The present invention provides also a magnetic recording/reproduction apparatus using the disk. Because the lubricating film formed in the data region of the magnetic disk is firmly fixed to the surface of the magnetic disk, it hardly invites adhesion and has a sufficient film thickness for securing durability under sliding friction. The lubricating film in the CSS region comprises both a lubricant having high fixing force and a lubricant having low fixing force to the surface of the magnetic disk, it has high CSS durability. It is therefore possible to obtain a high-reliability magnetic disk and a high-reliability magnetic recording/reproduction apparatus.

Abstract translation: 具有覆盖数据区域的润滑膜和形成在其表面上的CSS区域的磁盘。 润滑膜确保数据区域中的低粘性和低滑动摩擦力，并确保CSS区域中的CSS耐久性。 由于可以避免在正常操作或磁盘驱动器突然停止的情况下磁盘和磁头之间的润滑问题，所以可以确保高的可靠性。 本发明还提供一种使用该磁盘的磁记录/再现装置。 由于形成在磁盘的数据区域中的润滑膜牢固地固定在磁盘的表面上，所以难以粘附并且具有足够的膜厚以确保滑动摩擦下的耐久性。 CSS区域中的润滑膜包括具有高固定力的润滑剂和对磁盘表面具有低固定力的润滑剂，因此具有高的CSS耐久性。 因此，可以获得高可靠性磁盘和高可靠性磁记录/再现装置。

公开(公告)号：WO1988001781A1

公开(公告)日：1988-03-10

申请号：PCT/US1987001992

申请日：1987-08-17

Applicant: UNISYS CORPORATION

Inventor： UNISYS CORPORATION ,  FREW, Duncan, W. ,  SHADWICK, Robert, P. ,  BRAITBERG, Michael

IPC: G11B05/72

CPC classification number: G11B5/725

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 andlike depletion, despite frequent head-contact, while exhibiting good durability, wear resistance and recording characteristics over extended life (computer applications).

Abstract translation: 磁记录介质，其中记录表面涂覆有异氰酸酯润滑剂（和优选地，类似润滑剂的超级涂层），这种润滑适于抑制分离和类似的消耗，尽管经常头接触，同时表现出良好的耐久性，耐磨性 并在长寿命（计算机应用）中记录特性。

公开(公告)号：EP0243829A3

公开(公告)日：1988-11-30

申请号：EP87105755

申请日：1987-04-18

Applicant: BASF Aktiengesellschaft

Inventor： Melzer, Milena ,  Meyer, Bernd, Dr. ,  Sommermann, Friedrich, Dr. ,  Klumpp, Peter ,  Kreitner, Ludwig, Dr. ,  Lenz, Werner, Dr.

IPC: G11B05/708 ,  G11B05/706 ,  G11B05/72

CPC classification number: G11B5/708 ,  G11B5/71

公开(公告)号：EP0186356A3

公开(公告)日：1988-07-13

申请号：EP85308899

申请日：1985-12-06

Applicant: MINNESOTA MINING AND MANUFACTURING COMPANY

Inventor： Skorjanec, Joseph Minnesota Mining and ,  Moe, Carmen D. c/o Minnesota Mining and

IPC: G11B05/706 ,  G11B05/72 ,  G11B05/84

CPC classification number: G11B5/64 ,  G11B5/725 ,  Y10S428/90 ,  Y10S428/928 ,  Y10T428/12465 ,  Y10T428/12931 ,  Y10T428/3154 ,  Y10T428/31544

Abstract: A metallic, thin film, magnetic recording medium is disclosed wherein the surface of the metallic thin film is modified such as to promote improved adhesion with protective lubricant. A process is disclosed wherein, for example, controlled oxidation of a metallic, thin film magnetic recording medium yields a homogeneous distribution of bonding sites and wherein application of a protective lubricant (e.g., perfluoropolyether compositions) provides a recording medium exhibiting superior wear and abrasion resistance.

公开(公告)号：EP0143433A3

公开(公告)日：1987-11-25

申请号：EP84114077

申请日：1984-11-22

Applicant: BASF Aktiengesellschaft

Inventor： Guettner, Christine ,  Heilmann, Peter, Dr. ,  Kullmann, Udo, Dr. ,  Mayer, Dieter, Dr. ,  Grau, Werner, Dr.

IPC: G11B05/72

CPC classification number: G11B5/72 ,  Y10T428/12535 ,  Y10T428/12611 ,  Y10T428/12806

公开(公告)号：EP0194465A3

公开(公告)日：1987-10-14

申请号：EP86101909

申请日：1986-02-14

Applicant: Montedison S.p.A.

Inventor： Caporiccio, Gerardo ,  Scarati, Mario Alberto

IPC: C10M169/04 ,  C08L71/02 ,  G11B05/72 ,  C10M107/38 ,  C10M147/04 ,  C10N40/00

CPC classification number: C10M169/041 ,  C08G65/007 ,  C08G65/226 ,  C08L71/02 ,  C10M107/38 ,  C10M147/04 ,  C10M169/04 ,  C10M2213/00 ,  C10M2213/023 ,  C10M2213/04 ,  C10M2213/043 ,  C10M2213/06 ,  C10M2213/0606 ,  C10M2213/0623 ,  C10N2250/121 ,  C08L2666/22

Abstract: Lubricating compositions having improved film-forming properties are disclosed which comprise:
A) a perfluoropolyether having a viscosity of from 150 to 2000 cSt (at 20°C); B) a perfluoropolyether having a viscosity ≤ 50 cSt (at 20°C);
the amount of compound B) being in the range of from 2 to 20% by weight with respect to the sum of A) and B).

公开(公告)号：EP0170420A3

公开(公告)日：1987-06-03

申请号：EP85304677

申请日：1985-07-01

Applicant: MAGNETIC PERIPHERALS INC.

Inventor： Janssen, Robert Allen ,  Reinisch, Ronald Fabian

IPC: G11B05/72

CPC classification number: G11B5/72

Abstract: A magnetic disk has a recording surface, and a non-volatile halocarbon lubricant lubricating the recording surface. the lubricant being composed of one or more perhalogenated polycarbon compounds having no polar sites to which water molecules may cross-link and having a viscosity between 50 x 10 -6 and 1000 x 10 -6 m 2 /S (50 and 1000 centistokes).

Abstract translation: 磁盘具有记录表面和润滑记录表面的非挥发性卤代烃润滑剂，润滑剂由一种或多种不具有极性位点的全卤代聚碳化合物组成，水分子可以交联并具有50× 6和1000 x 10 -6 m / s（50和1000厘沲）。