Heat-assisted magnetic recording (HAMR) read/write head with reversed read head and write head
US10522176B1 · kind B1 · utility
2Cited by
3References
8Claims
0Family size
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Key dates
| Filing date | Feb 15, 2019 |
| Grant date | Dec 31, 2019 |
| Priority date | — |
| Expiry date | Feb 15, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2005/0021
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A heat-assisted magnetic recording (HAMR) disk drive read/write head has the write head located adjacent the trailing surface of the gas-bearing slider with the read head located adjacent the write head, which is the reversed location from conventional read/write heads. This results in reduced write head protrusion during writing which allows for a reduced minimum fly-height for the slider. For a HAMR read/write head that uses a heater to protrude the read head closer to the disk during reading, the reversed location allows for better heater efficiency and thus reduced heater power.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.