发明授权
- 专利标题: Master information carrier for magnetic transfer and magnetic transfer method
- 专利标题(中): 磁传输和磁转移方法的主信息载体
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申请号: US10304998申请日: 2002-11-27
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公开(公告)号: US06816327B2公开(公告)日: 2004-11-09
- 发明人: Masakazu Nishikawa , Kazuhiro Niitsuma , Tadashi Yasunaga , Toshihiro Usa , Kazunori Komatsu
- 申请人: Masakazu Nishikawa , Kazuhiro Niitsuma , Tadashi Yasunaga , Toshihiro Usa , Kazunori Komatsu
- 优先权: JP2001-362550 20011128
- 主分类号: G11B586
- IPC分类号: G11B586
摘要:
A master information carrier for magnetic transfer to an in-plane magnetic recording medium includes a base sheet having an irregularity pattern representing information to be transferred to an in-plane magnetic recording medium and a magnetic layer formed along the irregularity pattern. The thickness da1 of the magnetic layer on the upper surface of a protruding portion of the irregularity pattern and the thickness da2 of the magnetic layer on each of the side surfaces of the protruding portion satisfy the following condition, 0.05
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