公开(公告)号：US5073460A

公开(公告)日：1991-12-17

申请号：US584363

申请日：1990-09-18

申请人： Masaaki Futamoto ,  Yukio Honda ,  Selichi Asada ,  Takashi Nishimura ,  Kazuetsu Yoshida ,  Heigo Ishihara

发明人： Masaaki Futamoto ,  Yukio Honda ,  Selichi Asada ,  Takashi Nishimura ,  Kazuetsu Yoshida ,  Heigo Ishihara

IPC分类号： G11B5/72 ,  G11B5/851

CPC分类号： G11B5/72 ,  G11B5/851 ,  Y10S428/90

摘要： A magnetic recording medium comprising a substrate, a ferromagnetic thin film formed on the substrate, and a protective film formed directly on the ferromagnetic think film, and a process for producing such magnetic recording medium. The expression "formed directly" refers to the technique for forming the protective film on the ferromagnetic thin film so that the interface therebetween is free from contamination by, for instance, conducting the protective film formation under the vacuum used when forming the ferromagnetic thin film.