Production of magnetic recording media having a backing coating
    2.
    发明授权
    Production of magnetic recording media having a backing coating 失效
    制备具有背衬涂层的磁记录介质

    公开(公告)号:US4534999A

    公开(公告)日:1985-08-13

    申请号:US630182

    申请日:1984-07-12

    CPC分类号: G11B5/7013 G11B5/7028

    摘要: Magnetic recording media which have a thin backing coating and consist of a non-magnetic flexible base and a magnetic layer which is applied to one side of the base and comprises magnetic material finely dispersed in an organic binder are produced by applying a dispersion of finely divided non-magnetizable conductive and non-conductive solids and conventional additives in a solution of a polymeric binder in an organic solvent to that side of the base which is opposite the magnetic layer by means of a knife-coater, and then drying the layer, a high molecular weight organic compound which acts as a thickener being added to the backing coating dispersion.

    摘要翻译: 具有薄背衬涂层并由非磁性柔性基底和磁性层组成的磁记录介质通过施加细分散的分散体来制备,所述非磁性柔性基底和磁性层被施加到基底的一侧并且包括细分散在有机粘结剂中的磁性材料 不可磁化的导电和非导电固体和常规添加剂在聚合物粘合剂在有机溶剂中的溶液中,通过刮涂机将其与磁性层相对的基底侧面,然后干燥该层 用作增稠剂的高分子量有机化合物加入到背衬涂料分散体中。