发明名称 |
MAGNETIC RECORDING DISK |
摘要 |
<p>A magnetic recording disk is disclosed, which comprises (1) a three-layered laminate consisting of a core layer of a biaxially oriented polyolefin film which has a birefringence of not more than 0.01 and an amorphous-region orientation coefficient of not more than 0.2 and two outer layers of a biaxially oriented polyester film adhereed to the core layer, and (2) a magnetic layer formed on at least one side of the laminate. This magnetic recording disk undergoes only a slight dimensional change with a variation in humidity and temperature, and the dimensional change is isotropic in the plane.</p> |
申请公布号 |
EP0123258(B1) |
申请公布日期 |
1988.01.20 |
申请号 |
EP19840104340 |
申请日期 |
1984.04.17 |
申请人 |
TORAY INDUSTRIES, INC. |
发明人 |
TANAKA, KAZUHIRO;KAWAKAMI, KEN-ICHI;YOSHII, TOSHIYA |
分类号 |
B32B27/32;B32B33/00;C08L23/00;C08L67/02;G11B5/73;G11B5/82;(IPC1-7):G11B5/82;G11B5/70;G11B5/64;B32B27/08 |
主分类号 |
B32B27/32 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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