发明名称 |
Method of recording information on a recording medium having at least two magnetic layers |
摘要 |
Disclosed is a method of recording information on a magnetooptical recording medium, which medium includes a first magnetic layer and a second magnetic layer having a lower Curie temperature and a higher coercive force at room temperature than those of the first magnetic layer. The second magnetic layer is exchange-coupled to the first magnetic layer. The first magnetic layer has a higher compensation temperature than the Curie temperature of the second magnetic layer. The method of recording information includes applying a magnetic field, which is modified in accordance with information from a magnetic head, to the medium to record information on the first magnetic layer and scanning the medium with a light beam to heat the medium to a temperature at least near the Curie temperature of the second magnetic layer so as to transfer the information recorded on the first magnetic layer to the second magnetic layer.
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申请公布号 |
US5233578(A) |
申请公布日期 |
1993.08.03 |
申请号 |
US19920979459 |
申请日期 |
1992.11.20 |
申请人 |
CANON KABUSHIKI KAISHA |
发明人 |
YAMAMOTO, MASAKUNI;HASEGAWA, KOYO;MIYAOKA, YASUYUKI;OGASAWARA, YUTAKA;HIRAMATSU, MAKOTO;MATSUMURA, SUSUMU |
分类号 |
G11B7/135;G11B11/105 |
主分类号 |
G11B7/135 |
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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