Disk drive, method for measuring clearance and method for writing servo patterns
US8018673B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 13, 2009 |
| Grant date | Sep 13, 2011 |
| Priority date | — |
| Expiry date | Nov 13, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/6064
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A disk drive. The disk drive includes a plurality of head-sliders, an actuator, a plurality of clearance adjustment sections, and a controller. Each head-slider includes a slider and a magnetic-recording head on the slider for accessing a disk for storing data. The plurality of head-sliders is secured to the actuator that is configured to move the plurality of head-sliders concurrently. Each clearance adjustment section corresponds to each head-slider of the plurality of head-sliders and adjusts a clearance of the corresponding head-slider. In addition, the controller is configured to position the actuator by servo control with a first head-slider selected from the plurality of head-sliders, to change a clearance of a second head-slider different from the first head-slider by controlling a clearance adjustment section of the second head-slider to bring the second head-slider into contact with a disk, and to detect the contact to measure the clearance of the second head-slider.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.