Magnetic recording medium with high non-operational shock resistance
US6153284A · kind A · utility
3Cited by
5References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 17, 1998 |
| Grant date | Nov 28, 2000 |
| Priority date | — |
| Expiry date | Nov 17, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24355
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Non operational shock resistance is achieved by preventing separation of the read/write head from the disk. Embodiments include optimizing the normal stiction force of a lubricant topcoat by controlling the texture geometry of the landing zone and lubricant topcoat thickness, particularly the density of protrusions. Laser textured landing zones having a protrusion density above about 4,500 protrusions/mm.sup.2 can provide an optimal normal stiction force in excess of 25 gf per interface and a lateral stiction force below 10 gf per interface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.