Method of making low wear glass for magnetic heads
US5055957A · kind A · utility
6Cited by
13References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 2, 1990 |
| Grant date | Oct 8, 1991 |
| Priority date | — |
| Expiry date | Nov 2, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/295
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A low magnetic isolation closure glass for use in multitrack magnetic tape heads has been prepared by combining a specific lead borosilicate glass with a specific borosilicate glass in a 60/40 weight percent ratio. The glass formed from the combination exhibits compatibility with ferrite and has reduced wear. Controlling the anneal temperature regulates the residual stress of the closure glass produced, and thus, provides some control over the wear characteristics of the glass.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.