发明授权
US4853912A Process and apparatus for simultaneous erasure and recording in magneto-optical recording 失效
在磁光记录中同时擦除和记录的方法和装置

  • 专利标题: Process and apparatus for simultaneous erasure and recording in magneto-optical recording
  • 专利标题(中): 在磁光记录中同时擦除和记录的方法和装置
  • 申请号: US131327
    申请日: 1987-12-08
  • 公开(公告)号: US4853912A
    公开(公告)日: 1989-08-01
  • 发明人: Hideki AkasakaMasatoshi Sato
  • 申请人: Hideki AkasakaMasatoshi Sato
  • 申请人地址: JPX Tokyo
  • 专利权人: Nikon Corporation
  • 当前专利权人: Nikon Corporation
  • 当前专利权人地址: JPX Tokyo
  • 优先权: JPX59-91360 19840508
  • 主分类号: G11B11/10
  • IPC分类号: G11B11/10 G11B11/105
Process and apparatus for simultaneous erasure and recording in
magneto-optical recording
摘要:
A magneto-optical recording process is produced by irradiating a recording track of a recording medium, in the course of movement thereof, with a main light beam of intensity sufficient for heating the medium to a temperature at which the coercive force thereof is reduced to zero or a very small value in a continuous manner during the recording operation and irradiating a separating area with a subsidiary beam of a modulated intensity, thereby modulating the vertical magnetization of said separating area. A floating magnetic field generated by the thus modulated vertical magnetization generates magnetic fields of mutually different directions, thus forming a record bit on the recording track.
公开/授权文献
信息查询
0/0