发明名称 |
Rigid magnetic recording disks and method of producing same |
摘要 |
The present invention discloses a rigid magnetic recording disk and a method of making the same. The substrate is formed by metallurgically bonding at least a first and second layer of clad materials. The hardness and mechanical strength of the first layer is substantially greater than the second layer. The first layer has a thickness which is from about 0.2% to about 20% the thickness of the second layer. The unbonded surface of the first layer is substantially flat and asperity free. The second layer is less dense than the first layer. A magnetic layer is deposited on the unbonded surface of the first layer.
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申请公布号 |
US4882236(A) |
申请公布日期 |
1989.11.21 |
申请号 |
US19880154557 |
申请日期 |
1988.02.10 |
申请人 |
OLIN CORPORATION |
发明人 |
SMITH, CHARLES W.;BUTT, SHELDON H.;SHAPIRO, EUGENE |
分类号 |
G11B5/73;G11B5/738 |
主分类号 |
G11B5/73 |
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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