Magnetic head, bonding glass used therefor and magnetic recording and reproducing apparatus
US5239434A · kind A · utility
5Cited by
1References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 26, 1991 |
| Grant date | Aug 24, 1993 |
| Priority date | — |
| Expiry date | Sep 26, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03C8/24
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A magnetic head of a structure in which a pair of magnetic cores, each comprising a magnetic film formed on a support, are butted and bonded to each other with glass and with the interposition of a non-magnetic gap material. The bonding glass is an oxide type glass containing vanadium as main constituent, and 55% or more of vanadium contained in the glass is tetravalent vanadium. This magnetic head is excellent in mass productivity, wear resistance, scratch resistance, weather resistance and magnetic properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.