Systems and methods for polishing a magnetic disk
US8192249B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 12, 2009 |
| Grant date | Jun 5, 2012 |
| Priority date | — |
| Expiry date | Oct 25, 2030 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB24B21/06
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A polishing system and associated methods are described for polishing a magnetic disk used in a disk drive system. The polishing system includes a polishing film that is used to polish the magnetic disk. The polishing system also includes an actuator operable to move the polishing film across a surface of the magnetic disk to polish the magnetic disk. The polishing system also includes a pad having at least one protrusion extending from a surface of the pad. The protrusion is configured to contact the polishing film and press the polishing film against the magnetic disk. The protrusion is operable to compress to about the surface of the pad when in contact with the polishing film. Once polishing is complete, the pad retracts from the polishing film and the protrusion extends from the pad, reducing the adhesion force between the pad and the polishing film.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.