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    • 1. 发明公开
    • Magnetic recording medium and information recording-reproduction method using the same
    • 用于再现信息使用该载体进行记录的磁性记录介质和方法。
    • EP0471527A2
    • 1992-02-19
    • EP91307371.4
    • 1991-08-09
    • SHARP KABUSHIKI KAISHA
    • Nakajima, JunsakuTakahashi, AkiraHirokane, JunjiMurakami, YoshiteruOhta, Kenji
    • G11B11/10
    • G11B5/653G03G5/16G11B5/00G11B5/656G11B11/10504G11B11/10515G11B11/10532G11B11/10589G11B13/045G11B19/02
    • A magnetic recording medium having a recording layer made up of a ferrimagnetic material whose compensation temperature is included within room temperatures and an information recording-reproduction method using the magnetic recording medium. During recording, while a light beam is projected on the recording layer so as to raise the temperature of a recording portion, information is recorded by applying a signal magnetic field from a magnetic head. During reproduction, while a light beam is projected on a reproducing portion of the recording layer so as to raise the temperature thereof, information is reproduced by detecting leakage flux from the reproducing portion by the magnetic head. Thus, during reproduction, no magnetic flux is generated from other portions of the recording layer not irradiated by the light beam. With the arrangement, crosstalk due to leakage flux from adjoining tracks not irradiated by the optical beam can be eliminated. Therefore, track pitches can be made narrower so as to increase recording density of the magnetic recording medium. Further, since crosstalk from adjoining tracks is eliminated, a high S/N can be achieved.
    • 具有由铁磁材料制成,其补偿温度包括室温内以及使用该磁记录介质的信息记录 - 重放方法的记录层的磁记录介质。 在记录过程中,而一个光束投射在记录层上,从而提高记录部分的温度,信息是通过从磁头施加磁场信号记录下来。 在再现期间,而一个光束投射在记录层的再现部分,以便提高其温度,信息通过磁头从再现部检测的漏磁通再生。 因此,在再现期间,从不会由光束照射的记录层的其它部分不产生磁通量。 根据上述结构,串扰是由于来自不通过光束照射邻接的道的漏磁通可以被消除。 因此,轨道间距可以做得更窄,以便增加磁记录介质的记录密度。 此外,由于从邻接的道的串扰被消除,高S / N可以实现的。