发明授权
- 专利标题: Magnetic disc with zoned lubricant thickness
- 专利标题(中): 带有分区润滑剂厚度的磁盘
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申请号: US680591申请日: 1996-07-12
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公开(公告)号: US5650900A公开(公告)日: 1997-07-22
- 发明人: Bo Wei , Dallas W. Meyer , Venkat R. Koka
- 申请人: Bo Wei , Dallas W. Meyer , Venkat R. Koka
- 申请人地址: CA Scotts Valley
- 专利权人: Seagate Technology, Inc.
- 当前专利权人: Seagate Technology, Inc.
- 当前专利权人地址: CA Scotts Valley
- 主分类号: G11B5/725
- IPC分类号: G11B5/725 ; G11B5/82 ; G11B5/84 ; G11B5/72
摘要:
A magnetic disc for a computer disc drive has distinct zones of differing lubricant thickness. A bonded+mobile zone covers a portion of the disc which preferably coincides with the landing zone. A zone of different lubricant thickness, such as lubricant-free, bonded-only or mostly-bonded, covers a different portion of the disc such as over the data zone. After a uniform layer of lubricant is coated over the disc surface, lubricant can be removed from distinct zones by solvent removal over a periphery of the disc and by removal by laser. The lubricant removal from distinct zones can occur either before or after bonding. Multiple lubricant thickness zones may be used, and the lubricant thickness profile over the entire disc can be controlled as desired.
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