发明授权
- 专利标题： Magnetooptic recording medium cartridge for two-sided overwriting
- 专利标题（中）： 用于双面覆盖的磁记录记录介质
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申请号： US743122申请日： 1991-08-09
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公开(公告)号： US5206844A公开(公告)日： 1993-04-27
- 发明人: Yuwa Ishii
- 申请人： Yuwa Ishii
- 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： JPX2-238328 19900907
- 主分类号： G11B11/10
- IPC分类号： G11B11/10 ; G11B11/105 ; G11B23/03
摘要：
A magnetooptic recording medium cartridge which accommodates a double face type disk-like magnetooptic recording medium with which an overwriting can be performed by modulating only the intensity of a laser beam in accordance with two-valued information to be recorded, without modulating a recording magnetic field. The cartridge has two initial auxiliary magnetic field (Hini.) applying devices adapted to produce magnetic fields directed opposite to each other.
公开/授权文献
- US06018003A Golf ball containing plastomer and method of making same 公开/授权日：2000-01-25
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