Magnetic disk comprising a magnetic layer having specific projections distributions
    1.
    发明授权
    Magnetic disk comprising a magnetic layer having specific projections distributions 失效
    磁盘包括具有特定投影分布的磁性层

    公开(公告)号:US06632548B2

    公开(公告)日:2003-10-14

    申请号:US09897492

    申请日:2001-07-03

    IPC分类号: G11B5703

    摘要: A magnetic disk for high-density recording is provided, wherein a substantially non-magnetic lower layer is formed on a support and a magnetic layer containing ferromagnetic powder dispersed in a binder is formed on the lower layer. The magnetic layer has a thickness of 0.02 to 0.5 &mgr;m, and on the surface thereof at least 1×104 projections standing at least 20 nm high and at most 1×103 projections standing at least 70 nm high per mm2 measured by an atomic force microscope.

    摘要翻译: 提供一种用于高密度记录的磁盘,其中在支撑体上形成基本上非磁性的下层,并且在下层上形成包含分散在粘合剂中的铁磁性粉末的磁性层。 磁性层的厚度为0.02-0.5μm,在其表面上至少具有至少20nm高和至多1x10 3μm的至少1×10 4个/ SP> 通过原子力显微镜测量的每mm <2 至少高达70nm的投影