Method for texturing a magnetic disk silicate glass substrate
US5087481A · kind A · utility
40Cited by
4References
17Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Mar 29, 1989 |
| Grant date | Feb 11, 1992 |
| Priority date | — |
| Expiry date | Mar 29, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24355
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A glass disk is subjected to a chemical or gentle mechanical polishing step to remove microcracks or scratches in the disk surface prior to chemically texturing the disk. Thereafter, magnetic media is deposited onto the glass disk. We have discovered that by performing this pre-texturing polishing step, we can avoid the phenomenon of "linkage bumps," which could otherwise cause the resulting magnetic disk to fail a glide-type test or to cause a read/write head crash.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.