Method for adjusting flying height of magnetic heads using an electrical charge through an electrical pad on the slider
US7042670B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 11, 2003 |
| Grant date | May 9, 2006 |
| Priority date | — |
| Expiry date | Oct 31, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/6017
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A system and method for adjusting the flying height of a magnetic head above a magnetic storage medium, such as a disk, is disclosed. A charging electrical pad may be coupled to the slider separate from the magnetic head to allow a charging electrical conductor to apply an electrical charge to the slider. By acting as a quasi-parallel capacitor, the amount of spacing in the head-disk interface may be increased or decreased based on the amount of voltage applied. The slider may be electrically isolated from the suspension. A feedback control system may monitor and control the head-disk spacing by measuring temperature or other environmental conditions surrounding the slider and disk.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.