Memory disc, manufacturing method thereof, and method of manufacturing disc drive utilizing such memory disc
US6410103B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 24, 1999 |
| Grant date | Jun 25, 2002 |
| Priority date | — |
| Expiry date | Feb 24, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/6011
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A memory disc for use in a memory disc, comprising a lubricant layer which consists essentially of a non-fluid bonding lubricant, or comprises a lubricant layer which contains at least 90% of non-fluid bonding lubricant. Such memory disc is fabricated through steps of: forming a protective carbon layer; coating a lubricant on a disc substrate; subjecting the resultant substrate to an adhesion treatment to form a bonding layer of lubricant adhering to the disc substrate; and removing a free fluid layer of the lubricant remaining on the bonding layer. Thus, the memory disc has essentially no fluid component that can flow during read/write operations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.