Polishing apparatus with a balance adjusting unit
US6458021B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 31, 2000 |
| Grant date | Oct 1, 2002 |
| Priority date | — |
| Expiry date | Dec 28, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB24B29/02
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A polishing apparatus includes a lapping tape for polishing a surface of a magnetic disc, a tape supply unit for supplying the lapping tape, a varnisher roller for pressing the lapping tape onto the surface of the magnetic disc, and a pressing unit for pressing the lapping tape to the surface of the magnetic disc by way of the varnisher roller. The pressing unit is constituted by a swing lever having the varnisher roller at one end portion, and a balance adjusting unit. The balance adjusting unit sets the pressing force to zero by establishing the balance of the swing lever, and then breaks the balance so as to press the lapping tape to the surface of the magnetic disc by way of the varnisher roller with a desired pressing force.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.