发明授权
EP0838814B1 Magnetooptical recording medium allowing overwriting with two or more magnetic layers and recording method utilizing the same 失效
具有带有两个或更多的磁性层覆盖的可能性,并使用该介质的记录方法的磁光记录介质

  • 专利标题: Magnetooptical recording medium allowing overwriting with two or more magnetic layers and recording method utilizing the same
  • 专利标题(中): 具有带有两个或更多的磁性层覆盖的可能性,并使用该介质的记录方法的磁光记录介质
  • 申请号: EP98200006.9
    申请日: 1987-07-08
  • 公开(公告)号: EP0838814B1
    公开(公告)日: 2002-02-27
  • 发明人: Osato, YoichiKawade, HisaakiFujii, EiichiKasama, NobuhiroKobayashi, Tadashi
  • 申请人: CANON KABUSHIKI KAISHA
  • 申请人地址: 30-2, 3-chome, Shimomaruko, Ohta-ku Tokyo JP
  • 专利权人: CANON KABUSHIKI KAISHA
  • 当前专利权人: CANON KABUSHIKI KAISHA
  • 当前专利权人地址: 30-2, 3-chome, Shimomaruko, Ohta-ku Tokyo JP
  • 代理机构: Beresford, Keith Denis Lewis
  • 优先权: JP15878786 19860708; JP19120286 19860816; JP26203486 19861105; JP27856686 19861125; JP27856786 19861125; JP2038487 19870202; JP2167587 19870203; JP2399387 19870204; JP2470687 19870206; JP2470787 19870206; JP2708287 19870210; JP2708387 19870210; JP3773687 19870223; JP5289787 19870310; JP7255987 19870326; JP7027387 19870326; JP7027487 19870326; JP7027887 19870326; JP7027987 19870326; JP15310887 19870618
  • 主分类号: G11B11/10
  • IPC分类号: G11B11/10
Magnetooptical recording medium allowing overwriting with two or more magnetic layers and recording method utilizing the same
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