公开(公告)号：US5492764A

公开(公告)日：1996-02-20

申请号：US364410

申请日：1994-12-23

申请人： Tsutomu Okita ,  Toshio Ishida ,  Masaki Satake ,  Tadashi Yasunaga ,  Kazuyuki Usuki

发明人： Tsutomu Okita ,  Toshio Ishida ,  Masaki Satake ,  Tadashi Yasunaga ,  Kazuyuki Usuki

IPC分类号： G11B5/66 ,  C09D171/02 ,  C10M105/54 ,  C10M133/40 ,  C10M135/30 ,  C10N10/12 ,  C10N40/18 ,  G11B5/64 ,  G11B5/72 ,  G11B5/725 ,  G11B5/73 ,  G11B5/00

CPC分类号： G11B5/72 ,  G11B5/725 ,  Y10S428/90 ,  Y10T428/31678

摘要： The magnetic recording medium of the present invention comprises a ferromagnetic metallic thin film formed on a non-magnetic support, whereby a protective layer is formed on the ferromagnetic metallic thin film, said protective layer contains at least one type of thiouracil cyclic compounds having hydrocarbon group and at least one type of fluorine compounds having hydrocarbon group, or at least one type of tetrazaindene cyclic compounds and at least one type of fluorine compounds having hydrocarbon group, and no rusting occurs even when it is repeatedly run.

摘要翻译： 本发明的磁记录介质包括在非磁性载体上形成的强磁性金属薄膜，由此在强磁性金属薄膜上形成保护层，所述保护层含有至少一种具有烃基的硫脲嘧啶环状化合物 和至少一种具有烃基的氟化合物，或至少一种类型的四氮茚环状化合物和至少一种具有烃基的氟化合物，即使反复进行也不会发生生锈。

公开(公告)号：US5395696A

公开(公告)日：1995-03-07

申请号：US44505

申请日：1993-04-09

申请人： Toshio Ishida ,  Hideomi Watanabe ,  Tsutomu Okita ,  Kunihiko Honda ,  Kazuyuki Usuki

发明人： Toshio Ishida ,  Hideomi Watanabe ,  Tsutomu Okita ,  Kunihiko Honda ,  Kazuyuki Usuki

IPC分类号： G11B5/71 ,  C09D5/23 ,  C09D127/04 ,  C09D127/06 ,  C09D175/06 ,  C09D201/00 ,  C10M105/72 ,  C10M135/10 ,  C10N10/02 ,  C10N10/04 ,  C10N40/18 ,  G11B5/64 ,  G11B5/725 ,  G11B5/73 ,  G11B5/00

CPC分类号： G11B5/725 ,  Y10S428/90 ,  Y10T428/30 ,  Y10T428/3154 ,  Y10T428/31678 ,  Y10T428/31692

摘要： A magnetic recording medium having a magnetic recording layer on at least one surface of a non-magnetic support, wherein the magnetic recording layer has thereon a lubricant layer containing at least one fluoroalkyl sulfo compound having an ether or ester linkage, which is represented by the following formula (1). The magnetic recording medium is free from corrosion of the magnetic recording layer and has a low coefficient of friction and excellent running durability and shelf stability. The lubricant layer is particularly suitable for a magnetic recording medium having a metal thin film with or without an inorganic protective film as a magnetic recording layer.(Rf--A--R--SO.sub.3).sub.k X Formula (1)wherein Rf represents a fluoroalkyl group or a perfluoroalkyl group; A represents ##STR1## R represents an alkylene group; k represents an integer of 1 or 2; and X represents --H, --M, --MH (wherein M is an alkali metal or an alkali earth metal), or any one of primary to quaternary ammoniums.

摘要翻译： 一种在非磁性载体的至少一个表面上具有磁记录层的磁记录介质，其中所述磁记录层上具有含有至少一个具有醚或酯键的氟代烷基磺基化合物的润滑剂层， 以下公式（1）。 磁记录介质没有磁记录层的腐蚀，并且具有低的摩擦系数和优良的运行耐久性和架子稳定性。 润滑剂层特别适用于具有或不具有无机保护膜作为磁记录层的金属薄膜的磁记录介质。 （Rf-A-R-SO 3）kXFormula（1）其中Rf表示氟代烷基或全氟烷基; A表示 R表示亚烷基; k表示1或2的整数; 和X表示-H，-M，-MH（其中M是碱金属或碱土金属）或任何一种至季铵。