Data zone lube removal
US7914845B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 25, 2008 |
| Grant date | Mar 29, 2011 |
| Priority date | — |
| Expiry date | Dec 12, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/8408
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of manufacturing for providing closer head-to-media spacing, and the resulting disk, includes evenly lubricating a magnetic media disk, increasing the viscosity of a selected non-data zone region of the disk, and removing at least a portion of the lower viscosity region of the lubrication layer in a data zone region of the disk, thereby decreasing the thickness of the lubrication layer in the data zone portion of the lower viscosity region, producing a magnetic media disk capable of closer head-to-media spacing in the data zone portion of the lower viscosity region of the lubrication layer than in the non-data zone portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.