发明公开
- 专利标题： Magnetic recording medium and production thereof
- 专利标题（中）： 磁记录介质及其生产
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申请号： EP87107963.8申请日： 1987-06-02
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公开(公告)号： EP0248402A3公开(公告)日： 1989-11-15
- 发明人: Hosoo, Shigeyuki , Matsuura, Takeshi , Terazawa, Masatoshi c/o Toyo Unpanki Hokusetsu Ryo , Shibata, Takeshi c/o Hitachi Maxell Koyo Ryo
- 申请人： Hitachi Maxell Ltd.
- 申请人地址： No 1-1-88, Ushitora Ibaraki-shi Osaka-fu JP
- 专利权人： Hitachi Maxell Ltd.
- 当前专利权人： Hitachi Maxell Ltd.
- 当前专利权人地址： No 1-1-88, Ushitora Ibaraki-shi Osaka-fu JP
- 代理机构： von Kreisler, Alek, Dipl.-Chem.
- 优先权： JP130559/86 19860604
- 主分类号： G11B5/706
- IPC分类号： G11B5/706 ; C01G37/027
摘要：
A magnetic recording medium comprising a nonmagnetic substrate and a magnetic layer formed thereon which contains chromium oxide ferromagnetic powder comprising chromium oxide of the formula:
CrO x
wherein x is not smaller than 1.74 and not larger than 1.91, which has improved long term storage stability.
CrO x
wherein x is not smaller than 1.74 and not larger than 1.91, which has improved long term storage stability.
公开/授权文献
- EP0248402B1 Magnetic recording medium and production thereof 公开/授权日：1993-09-08
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