Selectable magnetic writers of different target geometries for reducing performance variance
US9865301B1 · kind B1 · utility
15Cited by
30References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 15, 2016 |
| Grant date | Jan 9, 2018 |
| Priority date | — |
| Expiry date | Jan 15, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B20/10388
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of forming a recording head for use with a data storage medium in a data storage device. The method includes forming first and second writers of different target geometries. A first recording measurement is performed on one or more storage media using the first writer. A second recording measurement is performed on the one or more storage media using the second writer. Based on a comparison of the first and second recording measurements to a predetermined quantity, either the first writer or the second writer is selected to be operational in the data storage device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.