Boosted preheat trajectory to obtain desired clearance before writing to disk
US10366719B1 · kind B1 · utility
1Cited by
7References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 20, 2018 |
| Grant date | Jul 30, 2019 |
| Priority date | — |
| Expiry date | Mar 20, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/607
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A clearance heater of a write head is engaged with a boosted current that exceeds a steady-state current. The steady-state current causes the write head to maintain a desired clearance over a disk during writing, the boosted current being applied before a start of the writing. The boosted current is monotonically decreased before the start of the writing and the steady-state current is applied to the heater after the start of the writing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.