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    • 5. 发明授权
    • Magnetic recording medium
    • 磁记录介质
    • US6040052A
    • 2000-03-21
    • US58135
    • 1998-04-10
    • Hiromichi KanazawaKunihiro UedaKatsuaki YanagiuchiTsunehiko IkarashiMasahide Kohno
    • Hiromichi KanazawaKunihiro UedaKatsuaki YanagiuchiTsunehiko IkarashiMasahide Kohno
    • C23C14/08C23C16/50G11B5/64G11B5/66G11B5/72G11B5/725G11B5/84B32B9/00
    • G11B5/8408G11B5/72G11B5/725Y10S428/90Y10T428/30
    • A magnetic recording (vapor deposition) film medium having improved friction characteristics, running durability, and still characteristics are provided. The magnetic recording thin film medium comprises a non-magnetic support having on at least one surface thereof a magnetic layer, a protective layer formed on the magnetic layer, and a lubricant layer formed on the protective layer, wherein the magnetic recording medium is obtained by that after forming the magnetic layer on the surface of the non-magnetic support conveyed along the surface of a cooling roll, a carbon-containing plasma polymerized film is formed on the magnetic layer as the protective layer, while conveying the non-magnetic support having the magnetic layer along the surface of a cooling roll, and after surface-treating the carbon-containing plasma polymerized film on the same cooling roll as the protective layer-forming roll or on a different cooling roll from the protective layer-forming roll without applying a bias voltage to the surface-treatment roll, whereby a double bond component of carbon and oxygen is incorporated in the surface of the carbon-containing plasma polymerized film at a ratio of from 1.4 to 7.5 atomic % to the whole carbon amount of the surface of the carbon-containing plasma polymerized film, and the lubricant layer made up of an ester of a fluorinated alcohol and a fatty acid is then formed on the carbon-containing plasma polymerized film.
    • 提供了具有改善的摩擦特性,运行耐久性和静止特性的磁记录(气相沉积)薄膜介质。 磁记录薄膜介质包括在其至少一个表面上具有磁性层,形成在磁性层上的保护层和形成在保护层上的润滑层的非磁性载体,其中磁记录介质由 在沿着冷却辊的表面输送的非磁性载体的表面上形成磁性层之后,在作为保护层的磁性层上形成含碳等离子体聚合膜,同时输送具有 沿着冷却辊的表面的磁性层,并且在与保护层形成辊相同的冷却辊上或与保护层形成辊不同的冷却辊上表面处理含碳等离子体聚合膜,而不施加 表面处理辊的偏置电压,由此将碳和氧的双键成分并入含碳等离子体的表面 然后,形成以含碳等离子体聚合膜表面的全碳量为基准的1.4〜7.5原子%的比例的聚合膜,由氟化醇和脂肪酸的酯构成的润滑剂层 在含碳等离子体聚合膜上。
    • 6. 发明授权
    • Magnetic recording medium
    • 磁记录介质
    • US5512373A
    • 1996-04-30
    • US208756
    • 1994-03-09
    • Kunihiro UedaKoji KobayashiMitsuru TakaiMasashi Higo
    • Kunihiro UedaKoji KobayashiMitsuru TakaiMasashi Higo
    • G11B5/725B32B27/00G11B5/66
    • G11B5/725Y10S428/90Y10T428/3154Y10T428/31544
    • The problem of rusting relating to a magnetic recording medium composed of a non-magnetic base and a magnetic recording layer of a ferromagnetic metal layer formed thereon is overcome by a magnetic recording medium comprising a non-magnetic support, a ferromagnetic metal thin film as a magnetic recording layer and a lubricating layer, wherein the lubricating layer contains a mixture of a first lubricant having a polar perfluoro radial and a second lubricant expressed by the following formula: ##STR1## where R is a divalent radical having 2 or fewer carbons atoms;D is a polar radical selected from phosphorus-containing radical, hydroxyl, carboxyl and esterified carboxyl;R.sup.1 is selected from F, CF.sub.3 and C.sub.2 F.sub.5 ; andR.sup.2 and R.sub.3 are selected from F, CF.sub.3 and C.sub.2 F.sub.5, CF(CF.sub.3).sub.2 and C(CF.sub.3).sub.3.
    • 由形成在其上的强磁性金属层的非磁性基底和磁记录层构成的磁记录介质的生锈问题由包括非磁性载体,强磁性金属薄膜 磁记录层和润滑层,其中润滑层包含具有极性全氟径向的第一润滑剂和由下式表示的第二润滑剂的混合物:其中R是具有2个或更少碳原子的二价基团; D是选自含磷自由基,羟基,羧基和酯化羧基的极性基团; R1选自F,CF3和C2F5; 并且R 2和R 3选自F,CF 3和C 2 F 5,CF(CF 3)2和C(CF 3)3。