发明授权
- 专利标题： Method of protecting a magnetic recording medium in a magnetic recording/playback system and apparatus therefor
- 专利标题（中）： 在磁记录/重放系统中保护磁记录介质的方法及其装置
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申请号： US894020申请日： 1986-08-07
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公开(公告)号： US4701813A公开(公告)日： 1987-10-20
- 发明人: Izumi Miyake , Kiyotaka Kaneko , Kazuya Oda
- 申请人： Izumi Miyake , Kiyotaka Kaneko , Kazuya Oda
- 申请人地址： JPX Kanagawa
- 专利权人： Fuji Photo Film Co., Ltd.
- 当前专利权人： Fuji Photo Film Co., Ltd.
- 当前专利权人地址： JPX Kanagawa
- 优先权： JPX60-177579 19850814
- 主分类号： G11B17/04
- IPC分类号： G11B17/04 ; G11B5/00 ; G11B5/012 ; G11B17/043 ; G11B17/054 ; G11B19/00 ; G11B19/06 ; G11B19/10 ; G11B19/14 ; G11B27/34 ; G11B27/36 ; G11B33/10
摘要：
A method of protecting a magnetic recording medium includes measuring a time period over which a main power supply continues to remain in an off state and the magnetic recording medium continues to remain loaded at a predetermined position. If the measured time period attains a first predetermined time period (e.g. 60 minutes), the recording medium is rotated for a second predetermined time period (e.g. several second), thereby preventing a magnetic recording/playback head from leaving its impression on the recording medium due to continuous pressing contact between the two at the same location on the recording medium.
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