Disc drive with layered write coil
US6654202B2 · kind B2 · utility
32Cited by
19References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 13, 2001 |
| Grant date | Nov 25, 2003 |
| Priority date | — |
| Expiry date | Jun 13, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/40
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A disc drive includes a disc and a read/write head accessing the disc. The head includes a thermally conductive substrate and a write coil window surrounded by a shared pole piece thermally coupled to the substrate, a central core, a write pole piece and a write gap. A bottom coil adjacent the shared pole piece has multiple turns that have bottom narrowed regions passing through the window. A top coil adjacent the write pole piece has multiple turns that have top narrowed regions passing through the window. The top turns are fewer in number and flattened relative to the bottom turns.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.