Magnetic recording medium having an improved magnetic recording layer
    1.
    发明授权
    Magnetic recording medium having an improved magnetic recording layer 失效
    具有改进的磁记录层的磁记录介质

    公开(公告)号:US4707403A

    公开(公告)日:1987-11-17

    申请号:US892383

    申请日:1986-07-21

    摘要: A magnetic recording medium in the form of a tape or a disk comprising a non-magnetic support and a magnetic recording layer formed on at least one side of the support. The magnetic recording layer is made of a dispersion, in a resin binder, of an acicular magnetic powder, a magnetic ferrite powder of a hexagonal system having an axis of easy magnetization along the c axis, and titanium monoxide powder having an average size of from 0.01 to 5 micrometers. The titanium monoxide powder is used in an amount of from 0.1 to 20 wt % based on the total of the acicular magnetic powder and the magnetic ferrite powder.

    摘要翻译: 一种磁带形式的磁记录介质,包括形成在载体的至少一侧上的非磁性载体和磁记录层。 磁记录层由树脂粘合剂中的针状磁性粉末,具有沿着c轴具有易磁化轴的六方晶系的磁性铁氧体粉末和平均尺寸为 0.01至5微米。 相对于针状磁性粉末和磁性铁氧体粉末的总量,二氧化钛粉末的使用量为0.1〜20重量%。

    Magnetic recording medium having a back coat layer
    2.
    发明授权
    Magnetic recording medium having a back coat layer 失效
    具有背涂层的磁记录介质

    公开(公告)号:US4720413A

    公开(公告)日:1988-01-19

    申请号:US892382

    申请日:1986-07-21

    IPC分类号: G11B5/735 G11B5/70

    摘要: A magnetic recording medium which comprises a non-magnetic support, a magnetic recording layer formed on one side of the support, and a back coat layer formed on the other side. The back coat layer is made of a dispersion, in a binder resin, of non-magnetic particles on which there is adsorbed carbon black having an average size not larger than 100 millimicrons and a specific surface area not less than 30 m.sup.2 /g.

    摘要翻译: 一种磁记录介质,其包括非磁性载体,形成在载体一侧的磁记录层和在另一侧上形成的背涂层。 背涂层由粘合剂树脂中的分散体制成,其中吸附有平均尺寸不大于100毫微米,比表面积不小于30m 2 / g的炭黑的非磁性颗粒。

    Magnetic recording mediums comprising a modified vinyl chloride resin
binder in at least a magnetic recording layer
    4.
    发明授权
    Magnetic recording mediums comprising a modified vinyl chloride resin binder in at least a magnetic recording layer 失效
    在至少磁记录层中包含改性氯乙烯树脂粘合剂的磁记录介质

    公开(公告)号:US4868046A

    公开(公告)日:1989-09-19

    申请号:US59258

    申请日:1987-06-05

    IPC分类号: G11B5/702

    摘要: Magnetic recording mediums comprise a non-magnetic support and a magnetic recording layer formed on one side of the support. The magnetic recording layer comprises a magnetic powder dispersed in a specific type of vinyl chloride resin having a --SO.sub.3 M or group, in which M represents a monovalent metal or NH.sub.4, and an epoxy group in the molecule. A back coat layer comprising the specific type of vinyl chloride resin may also be formed on the other side of the support.

    摘要翻译: 磁记录介质包括形成在载体一侧的非磁性载体和磁记录层。 磁记录层包括分散在具有-SO 3 M或基团的特定类型的氯乙烯树脂中的磁性粉末,其中M表示一价金属或NH 4,分子中具有环氧基。 也可以在载体的另一侧上形成包含特定类型的氯乙烯树脂的背涂层。