Storage device having slider with sacrificial extension aligned with channel on opposite surface
US7474507B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 19, 2007 |
| Grant date | Jan 6, 2009 |
| Priority date | — |
| Expiry date | Sep 19, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49037
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A disk drive including a slider with one or more sacrificial structures (extensions) that facilitate lapping to create the air-bearing surface (ABS) is described. The slider includes a magnetic transducer and has a remaining portion of a sacrificial extension protruding on an air-bearing surface, the remaining portion of the sacrificial extension is narrower than the air-bearing surface and aligned with the magnetic transducer. The sacrificial extension makes the surface of the slider which will be lapped non-planar. The sacrificial extension extends below the predetermined ABS plane. When the sliders are individually separated by DRIE, the shape of a mask including the sacrificial extension is projected down into and along the slider body. The mask and resulting slider includes a channel in the slider body that is aligned with the sacrificial extension and disposed on a surface of slider body that is parallel to and opposite from the air-bearing surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.