Recording head with surface charge control
US9502064B1 · kind B1 · utility
3Cited by
10References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 28, 2015 |
| Grant date | Nov 22, 2016 |
| Priority date | — |
| Expiry date | Aug 28, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/6035
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A data recording head may consist of at least a charge control circuit that has a substrate, ground, surface charge circuitry, and data reader circuitry. The substrate may be electrically isolated from the ground and electrically connected between the surface charge circuitry and a non-zero fixed voltage. The surface charge circuitry can be configured to apply a varying substrate charge to the substrate at a predetermined frequency to alter a head media spacing between the substrate and a data storage medium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.