发明授权
EP0258978B1 Magnetooptical recording medium allowing overwriting with two or more magnetic layers and recording method utilizing the same 失效
使用具有两个或更多的磁性层覆盖的可能性,这种媒体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): 使用具有两个或更多的磁性层覆盖的可能性,这种媒体记录方法的磁光记录介质
  • 申请号: EP87306038.8
    申请日: 1987-07-08
  • 公开(公告)号: EP0258978B1
    公开(公告)日: 1998-10-07
  • 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: JP158787/86 19860708; JP191202/86 19860816; JP262034/86 19861105; JP278566/86 19861125; JP278567/86 19861125; JP20384/87 19870202; JP21675/87 19870203; JP23993/87 19870204; JP24706/87 19870206; JP24707/87 19870206; JP27082/87 19870210; JP27083/87 19870210; JP37736/87 19870223; JP52897/87 19870310; JP72559/87 19870326; JP70273/87 19870326; JP70274/87 19870326; JP70278/87 19870326; JP70279/87 19870326; JP153108/87 19870618
  • 主分类号: G11B11/10
  • IPC分类号: G11B11/10 G11B13/04
Magnetooptical recording medium allowing overwriting with two or more magnetic layers and recording method utilizing the same
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