发明名称 |
MAGNETIC DISK AND SERVO SIGNAL RECORDING METHOD |
摘要 |
PROBLEM TO BE SOLVED: To provide a means for measuring the distance between a reproducing element and a recording element and the track width which are required for a self servo writing without previously recording a positioning signal on a disk. SOLUTION: An actuator is pressed against a stopper at an inner peripheral side in a first stage for recording a servo signal, the driving force of the actuator is changed and a head position is adjusted. Thus, an off-track profile is measured and a head feeding pitch is calculated by the obtained track width and an R/W offset. Thus the self-servo writing can be performed by the correctly managed track pitch.
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申请公布号 |
JP2002230929(A) |
申请公布日期 |
2002.08.16 |
申请号 |
JP20010028973 |
申请日期 |
2001.02.06 |
申请人 |
HITACHI LTD |
发明人 |
ANNA HIROSHI;YAMAGUCHI TAKASHI;GOTOU MARUTOMO;NUMAZATO HIDEHIKO |
分类号 |
G11B20/12;G11B5/55;G11B5/596;G11B21/10;(IPC1-7):G11B21/10 |
主分类号 |
G11B20/12 |
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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