Magnetic head device having increased dimensional accuracy and improved magnetic characteristics
US5731938A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 20, 1996 |
| Grant date | Mar 24, 1998 |
| Priority date | — |
| Expiry date | Mar 20, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/58
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A magnetic head device comprising: PA1 a magnetic circuit which includes a head core unit, a back core and a coil; PA1 the head core unit including a first core made from a magnetic material and a second core made from a magnetic material, and forming a magnetic gap between the first core and the second core; PA1 the back core made from a magnetic material and jointed to the first core and the second core so as to form back gaps; PA1 the coil arranged on the first core; PA1 a first holder which is bonded to the first core and the second core at two locations of the side of the magnetic gap and the side of the back gaps so as to hold the magnetic circuit; and PA1 a second holder which is bonded to the first core and the second core at the magnetic gap side so as to hold the magnetic circuit, and which is substantially of a square pillar.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.