Servo write head
US6943987B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 27, 2002 |
| Grant date | Sep 13, 2005 |
| Priority date | — |
| Expiry date | Oct 29, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/584
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A servo write head for magnetic tape is provided. The invention includes first and second non-magnetic substrates and first and second magnetic layers deposited between the non-magnetic substrates. A middle non-magnetic substrate is then deposited between the first and second magnetic layers and forms the magnetic gap. In one embodiment, non-magnetic protective layers are placed between the middle substrate and magnetic layers and form part of the gap. A contoured top layer of magnetic material is deposited across the other layers and substrates and has at least one recording gap, and wherein the top layer forms a magnetic pattern for writing a servo pattern to the tape.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.