Method of and apparatus for manufacturing recording medium
US6592435B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 13, 2001 |
| Grant date | Jul 15, 2003 |
| Priority date | — |
| Expiry date | Jul 13, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/84
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
In a recording medium manufacturing method for obtaining a recording medium by effecting a surface smoothing treatment on a surface smoothing treatment surface of a surface of a medium, the surface smoothing treatment surface of the medium is locally pressed by a polishing work tape having a pressure area less than 1 mm, more preferably, less than 0.5 mm with respect to both radial direction and tangential direction relative to rotation of the medium. In a polishing work of recording medium manufacturing process, a problem of occurrence of defects such as scratches on the surface layer can be improved, whereby yield can be increased and mass-productivity can be improved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.