Process for producing magnetic recording medium
    4.
    发明授权
    Process for producing magnetic recording medium 失效
    磁记录介质的制造方法

    公开(公告)号:US5582878A

    公开(公告)日:1996-12-10

    申请号:US621450

    申请日:1996-03-25

    IPC分类号: G11B5/84 B05D3/00

    CPC分类号: G11B5/8404

    摘要: A magnetic recording medium having an improved CSS characteristics is made by a process including a surface texture treatment step of either (1) focusing an ultraviolet laser beam in a ring-shaped band, or (2) focusing a pulsed ultraviolet laser beam at an energy density of at least 0.01 J/cm.sup.2 but lower than the threshold level successively at least two times but up to 1,000 times, on a substrate composed of glass or silicon, followed by the formation of an undercoat, a magnetic layer, and a protective coating in this order on the surface-textured substrate.

    摘要翻译: 具有改进的CSS特性的磁记录介质通过包括(1)将紫外激光束聚焦在环带中的表面纹理处理步骤或(2)以脉冲紫外激光束聚焦的能量 在由玻璃或硅构成的基板上,至少为0.01J / cm 2且低于阈值水平的密度为至少两倍但高达1,000倍,然后形成底涂层,磁性层和保护涂层 在表面纹理化衬底上。