Magnetic recording medium having a high recording density and its production
    6.
    发明授权
    Magnetic recording medium having a high recording density and its production 失效
    具有高记录密度和其生产的磁记录介质

    公开(公告)号:US06235368B1

    公开(公告)日:2001-05-22

    申请号:US09157598

    申请日:1998-09-21

    Abstract: A magnetic recording medium which consists of at least two layers cast one on top of the other is described, the lower layer containing acicular magnetic pigments having a field strength of 5-40 kA/m and a magnetization of 20-70 nTm3/g and the upper layer containing a high-density metal powder dispersion. After application of the layers, the magnetic recording medium is subjected to a magnetic disorientation treatment while the layers are in the wet state, so that said recording medium has virtually no magnetic and mechanical anisotropy. The magnetic recording medium produced in this manner is particularly suitable for floppy disks having a high storage capacity of substantially more than 100 megabytes.

    Abstract translation: 描述了由至少两层在另一层之上浇铸的磁记录介质,下层含有场强为5-40kA / m,磁化强度为20-70nTm3 / g的针状磁性颜料, 上层含有高密度金属粉末分散体。 在施加层之后,磁记录介质在层处于湿态时进行磁性定向处理,使得所述记录介质几乎不具有磁和机械各向异性。 以这种方式制造的磁记录介质特别适用于具有大大超过100兆字节的高存储容量的软盘。

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