发明授权
- 专利标题: Production of magnetic recording media
- 专利标题(中): 制作磁记录媒体
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申请号: US571229申请日: 1990-08-23
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公开(公告)号: US5082689A公开(公告)日: 1992-01-21
- 发明人: Ludwig Kreitner , Werner Grau , August Lehner , Hans Reichert , Friedrich Sommermann , Norbert Schneider , Gerd Erhardt
- 申请人: Ludwig Kreitner , Werner Grau , August Lehner , Hans Reichert , Friedrich Sommermann , Norbert Schneider , Gerd Erhardt
- 申请人地址: DEX Ludwigshafen
- 专利权人: Basf Aktiengesellschaft
- 当前专利权人: Basf Aktiengesellschaft
- 当前专利权人地址: DEX Ludwigshafen
- 优先权: DEX3929166 19890902
- 主分类号: G11B5/842
- IPC分类号: G11B5/842
摘要:
Magnetic recording media are produced by preparing a dispersion of anisotropic magnetic materials in solution in an organic binder using dispersants and further conventional additives, applying the dispersion in the form of a layer onto a nonmagnetic substrate and solidifying the applied magnetic layer, by a process in which a cylindrical grinding chamber is used which is provided with an anchor stirrer or helical stirrer and contains grinding media whose specific gravity is lower than that of the magnetic material.
公开/授权文献
- US5716507A Oxygen sensor element 公开/授权日:1998-02-10