发明授权
- 专利标题： Optical storage medium having a specific light transmitting layer for small laser beam and high linear velocity
- 专利标题（中）： 具有用于小激光束的特定光透射层和高线速度的光存储介质
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申请号： US09887434申请日： 2001-06-25
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公开(公告)号： US06667952B2公开(公告)日： 2003-12-23
- 发明人: Tsuyoshi Komaki , Hideki Hirata , Tatsuya Kato
- 申请人： Tsuyoshi Komaki , Hideki Hirata , Tatsuya Kato
- 优先权： JP2000-191787 20000626; JP2000-363891 20001129
- 主分类号： G11B724
- IPC分类号： G11B724
摘要：
In an optical information medium comprising a supporting substrate, an information recording layer thereon, and a light-transmitting layer wherein a recording/reading laser beam enters the recording layer through the light-transmitting layer, the light-transmitting layer is formed of a resin and has a tensile strength at break of 5-40 MPa, a tensile elongation at break of 15-100%, and a tensile modulus of 40≧1,000 MPa. The medium has improved recording/reading characteristics when a laser beam defines a beam spot having a small diameter of up to 300 &mgr;m and the medium is rotated at a high linear velocity of at least 8 m/s.
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