Magnetic head apparatus and drive apparatus including magnetic head apparatus
US7268971B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 22, 2005 |
| Grant date | Sep 11, 2007 |
| Priority date | — |
| Expiry date | Mar 20, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B15/602
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A narrow magnetic body 66 in which outward path and inward path recording magnetic head devices 1WF and 1WR, capable of recording at least data on a metal evaporated type magnetic tape 51 running in the outward and inward direction and vice versa along the longitudinal direction, comprise the operation magnetic gaps GF and GR with the asymmetric structure is located at the leading side of the metal evaporated type magnetic tape 51. With this arrangement, magnetic field influence exerted by the narrow magnetic body can be decreased, and difference produced between magnetic recording and reproducing characteristics when the metal evaporated type magnetic tape is transported in the outward direction and in the inward direction can be decreased. Also, deteriorations of characteristics deteriorated by off-track upon reproduction can be improved. Thus, when the recording magnetic heads with the operation magnetic gaps having the asymmetric structure are in use and the metal evaporated type magnetic tape is transported in the outward and inward direction and vice versa, difference produced between magnetic recording and reproducing characteristics when the metal evaporated type magnetic t…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.