Patterned magnetic recording medium possessing recording portions with a lower height than the surrounding non-magnetic matrix
US6495240B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 9, 2000 |
| Grant date | Dec 17, 2002 |
| Priority date | — |
| Expiry date | Feb 9, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In conjunction with a so-called patterned medium comprising recording tracks each having an array of unit minute recording portions of a magnetic material separated by non-recording portions of a nonmagnetic material, the invention aims to prevent the recorded information from being disrupted by contact of a magnetic head slider with the medium. The magnetic recording medium of the invention includes recording tracks each having an array of unit minute recording portions (14) of a magnetic material separated by non-recording portions (16) of a nonmagnetic material. The surface height of the unit minute recording portions (14) is set lower than the surface height of the non-recording portions (16).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.