发明授权
- 专利标题： Magnetic recording medium and method of forming the same and magnetic disk drive
- 专利标题（中）： 磁记录介质及其形成方法及磁盘驱动器
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申请号： US762207申请日： 1996-12-09
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公开(公告)号： US6055139A公开(公告)日： 2000-04-25
- 发明人: Yoshinori Ohtsuka , Yoshifumi Mizoshita , Takao Koshikawa , Hiroshi Maeda
- 申请人： Yoshinori Ohtsuka , Yoshifumi Mizoshita , Takao Koshikawa , Hiroshi Maeda
- 申请人地址： JPX Kawasaki
- 专利权人： Fujitsu Limited
- 当前专利权人： Fujitsu Limited
- 当前专利权人地址： JPX Kawasaki
- 优先权： JPX7-325320 19951214; JPX8-239007 19960910
- 主分类号： G11B5/596
- IPC分类号： G11B5/596 ; G11B5/66 ; G11B5/82 ; G11B5/855 ; G11B5/74 ; G11B23/00
摘要：
A magnetic recording medium having magnetic patterns into which servo information are written and a magnetic recording layer into which data are written comprises a nonmagnetic substrate, a magnetic recording layer formed on the substrate, and a hard magnetic layer contacted the magnetic recording layer within servo signal recording regions on the substrate and constituting servo patterns of film thicknesses of which are varied in the track length direction. Thereby, more precise reading of the servo signals by the magnetic head is assured and a surface of the magnetic recording medium can be flatted.
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