Longitudinal magnetic recording heads with variable-length gaps
US6865056B1 · kind B1 · utility
0Cited by
20References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 4, 2000 |
| Grant date | Mar 8, 2005 |
| Priority date | — |
| Expiry date | Apr 4, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/232
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A longitudinal recording head (50, 56, 60) for use with magnetic recording media includes a non-uniform gap (54, 59, 64) between first (51, 57, 61) and second magnetic (52, 58, 62) poles which focuses magnetic flux onto a small area of the magnetic recording medium. The non-uniform gap is preferably in the form of a cavity that is contoured to produce the desired flux pattern. Longitudinal recording heads incorporating the non-uniform gap are capable of improved recording densities.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.