发明授权
- 专利标题： Information medium with improved temperature characteristics
- 专利标题（中）： 具有改善温度特性的信息介质
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申请号： US803780申请日： 1991-12-06
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公开(公告)号： US5265087A公开(公告)日： 1993-11-23
- 发明人: Nobuo Inage , Kazuharu Odawara , Ryoji Yamaguchi
- 申请人： Nobuo Inage , Kazuharu Odawara , Ryoji Yamaguchi
- 申请人地址： JPX Kawasaki
- 专利权人： Kabushiki Kaisha Toshiba
- 当前专利权人： Kabushiki Kaisha Toshiba
- 当前专利权人地址： JPX Kawasaki
- 优先权： JPX61-281951 19861128
- 主分类号： G11B17/028
- IPC分类号： G11B17/028 ; G11B17/03 ; G11B23/00 ; G11B23/03 ; G11B7/24
摘要：
An information memory medium (10) includes disk-shaped substrates (30a, 30b) and recording layers (32a, 32b). It also has a centering member (38a, 38b) whose coefficient of thermal expansion resembles that of the substrates (30a, 30b). Two flat magnetic members (40a, 40b) are situated in annular depressions (68a, 68b) provided in the centering member. The annular depressions are larger than the magnetic members so that differences in thermal expansion can be absorbed.
公开/授权文献
- US4161267A Trunk mount spare wheel carrier device 公开/授权日：1979-07-17
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