发明名称 |
Protective layer for magnetic disk |
摘要 |
A magnetic recording disk composed of a substrate, a magnetic layer, and a protective/lubricative carbon layer is etched and has oxygen embedded into the surface of the disk. This carbon/oxygen surface is extremely smooth, and wears better than prior art disks not having oxygen imbedded in the surface. This altered layer enables a magnetic disk to undergo over twice the number of start/stop cycles without incurring damage from magnetic transducers used to read information from the recording than similar disks prepared without oxygen in the outer layer. A method of plasma etching is used to embed the oxygen into the surface.
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申请公布号 |
US4861662(A) |
申请公布日期 |
1989.08.29 |
申请号 |
US19870010381 |
申请日期 |
1987.02.03 |
申请人 |
AKASHIC MEMORIES CORPORATION |
发明人 |
KOBLISKA, ROBERT J.;LI, ERIC K. |
分类号 |
G11B5/64;G11B5/66;G11B5/72;G11B5/73;G11B5/738;G11B5/84 |
主分类号 |
G11B5/64 |
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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