Method and system for calibrating an electronic lapping guide for a beveled pole in a magnetic recording transducer
US8291743B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 27, 2009 |
| Grant date | Oct 23, 2012 |
| Priority date | — |
| Expiry date | Oct 24, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/3169
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method and system for calibrating an electronic lapping guide (ELG) for transducer(s) having an ABS and a magnetic structure are described. The magnetic structure has a desired thickness, a bevel, and a flare point a distance from the ABS. The method and system include providing at least three ELGs. A first ELG has first and second edges first and second distances from the ABS. A second ELG has third and fourth edges third and second distances from the ABS. A third ELG has fifth and sixth edges fourth and second distances from the ABS. The first, third, and fourth distances correspond to a stripe height and an offset. The first, third, and fourth distance and/or the second distance corresponds to an intersection between the bevel and the desired thickness. The method and system also include measuring resistances of the ELGs, and calibrating the ELG(s) utilizing the offset and resistances.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.