发明名称 |
LASER TEXTURING OF MAGNETIC RECORDING MEDIUM USING MULTIPLE LENS FOCUSING |
摘要 |
A magnetic recording medium is textured with a pulsed laser light beam through a multiple lens focusing system. The use of a multiple lens focusing system enables the formation of a plurality of relatively uniform protrusions smaller than those obtained with a single lens focusing system, thereby avoiding abrupt local profile changes. In an embodiment, the laser light beam is split, as by offsetting the lenses, to obtain a plurality of pairs of even smaller protrusions than obtained with a laser light beam having a centralized energy profile. The pulsed, multiple lens focused laser light beam can be used to texture a substrate, underlayer or magnetic layer. The resulting laser textured magnetic recording medium exhibits improved flying stability, glide performance and reliability.
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申请公布号 |
WO9742628(A1) |
申请公布日期 |
1997.11.13 |
申请号 |
WO1996US06829 |
申请日期 |
1996.05.09 |
申请人 |
SEAGATE TECHNOLOGY, INC.;XUAN, JIALUO, JACK;CHEN, GA-LANE |
发明人 |
XUAN, JIALUO, JACK;CHEN, GA-LANE |
分类号 |
G11B5/82;G11B5/73;G11B5/84;(IPC1-7):G11B5/64 |
主分类号 |
G11B5/82 |
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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