发明名称 |
Information recording method |
摘要 |
In an information recording method of the present invention by carrying out recording data while carrying out tracking servo accurately, high density recording of signals at a good S/N can be carried out, and high density recording by a vertical magnetic recording system can be carried out. A magnetic disk comprises a magnetic recording layer, and the magnetic recording layer is magnetized in advance such that magnetized regions A and B having different magnetization directions are formed. At a time of recording data, vertical magnetic recording is carried out by a magnetic head while carrying out accurate tracking servo by optically tracking by a magneto-optical effect utilizing a difference in the magnetization directions of the magnetized regions A and B. Therefore, high-density recording at a good S/N is possible.
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申请公布号 |
US2003076611(A1) |
申请公布日期 |
2003.04.24 |
申请号 |
US20020264343 |
申请日期 |
2002.10.04 |
申请人 |
FUJI PHOTO FILM CO., LTD. |
发明人 |
USUKI KAZUYUKI;NISHIKAWA MASAKAZU;NAGAO MAKOTO |
分类号 |
G11B5/82;G11B5/02;G11B5/596;G11B5/86;(IPC1-7):G11B5/86 |
主分类号 |
G11B5/82 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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