发明名称 Magneto-optical recording/reproducing device.
摘要 <p>A magneto-optical recording/reproducing device which records information by irradiating a light beam of constant intensity on a magneto-optical recording medium while simultaneously applying a magnetic field thereon through a recording magnetic head; and which reproduces the recorded information through a reproducing magnetic head. The magneto-optical recording medium has a magnetic film formed on a translucent substrate and the magnetic field applied through the recording magnetic head reverses in response to the information to be recorded. The recording magnetic head and the reproducing magnetic head are integrally provided on a single magnetic core in order to set their positions easily with respect to each other. By making a magnetic core end-face of the reproducing magnetic head smaller than a light beam spot, information recorded on areas smaller than the light beam spot can be reproduced. A large reproduced output may be achieved by using a magneto-optical recording medium which has a soft magnetic material layer made of soft magnetic material provided between the substrate and the magnetic film. &lt;IMAGE&gt;</p>
申请公布号 EP0461907(A2) 申请公布日期 1991.12.18
申请号 EP19910305374 申请日期 1991.06.13
申请人 SHARP KABUSHIKI KAISHA 发明人 OHTA, KENJI;TAKAHASHI, AKIRA;MURAMATSU, TETSUROU;YAMAMOTO, TATSUSHI;ISHIKAWA, TOSHIO
分类号 G11B5/00;G11B5/127;G11B5/187;G11B13/04 主分类号 G11B5/00
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