发明授权
- 专利标题： Magnetic transfer apparatus and method for magnetic recording medium
- 专利标题（中）： 用于磁记录介质的磁转移装置和方法
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申请号： US10658690申请日： 2003-09-09
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公开(公告)号： US07012770B2公开(公告)日： 2006-03-14
- 发明人: Hiroyuki Yoshimura , Kiminori Sato
- 申请人： Hiroyuki Yoshimura , Kiminori Sato
- 申请人地址： JP
- 专利权人： Fuji Electric Co., Inc.
- 当前专利权人： Fuji Electric Co., Inc.
- 当前专利权人地址： JP
- 代理机构： Rossi, Kimms & McDowell, LLP
- 优先权： JP2003-047912 20030225
- 主分类号： G11B5/86
- IPC分类号： G11B5/86
摘要：
A magnetic pattern of a master disc is transferred to both sides of a magnetic recording medium with no displacement. The origin of a magnetic recording medium can be determined by observing the inner or outer periphery of the magnetic recording medium. Back-side alignment marks are formed on the front side of the magnetic recording medium based on the origin thus determined. The back-side alignment marks can be observed with a microscope and front-side alignment marks for the magnetic recording medium can be provided on the back side of the magnetic recording medium. The alignment marks provided on the front/back sides of the magnetic recording medium are aligned with the corresponding alignment marks provided on the master disc, and a magnetic pattern formed on the soft magnetic material of the master disc is can be transferred to the magnetic recording medium.
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