发明授权
- 专利标题： Master information carrier, method for producing the carrier, method and apparatus for writing information into magnetic record medium using the carrier
- 专利标题（中）： 主信息载体，用于生成载体的方法，使用载体将信息写入磁记录介质的方法和装置
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申请号： US10396674申请日： 2003-03-25
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公开(公告)号： US06961196B2公开(公告)日： 2005-11-01
- 发明人: Tatsuaki Ishida , Ryuji Sugita , Kiyokazu Tohma , Kazunari Yoshimoto , Keizou Miyata , Hiroshi Ryonai
- 申请人： Tatsuaki Ishida , Ryuji Sugita , Kiyokazu Tohma , Kazunari Yoshimoto , Keizou Miyata , Hiroshi Ryonai
- 申请人地址： JP Osaka
- 专利权人： Matsushita Electric Industrial Co., Ltd.
- 当前专利权人： Matsushita Electric Industrial Co., Ltd.
- 当前专利权人地址： JP Osaka
- 代理机构： Hamre, Schumann, Mueller & Larson, P.C.
- 优先权： JP8-191889 19960722; JP9-075703 19970327; JP9-133897 19970523; JP9-124257 19970514
- 主分类号： G11B5/596
- IPC分类号： G11B5/596 ; G11B5/64 ; G11B5/855 ; G11B5/86
摘要：
A master information carrier comprises a substrate whose surface has an embossed pattern corresponding to an information signal. At least a surface of the protruding portion of the embossed pattern is made of a ferromagnetic material. A method for writing an information signal into a sheet or disk magnetic record medium with a ferromagnetic thin film or coating is performed by putting the surface of the magnetic record medium into contact with the master information carrier so as to write a magnetized pattern corresponding to the embossed pattern of the master information carrier into the magnetic record medium.