Two gap read/write head assembly
US3959824A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 25, 1974 |
| Grant date | May 25, 1976 |
| Priority date | — |
| Expiry date | Jan 25, 1994 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/4893
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A two gap read/write head assembly including a read pole-piece and a write pole-piece which are placed in close proximity to each other in a common housing, a first auxiliary magnetic gap means being provided adjacent to and near the gap of the read pole-piece but insuring the first auxiliary magnetic gap means does not engage with the magnetic recording medium so that any feedthrough signal due to a write signal may be effectively cancelled, and/or a second auxiliary magnetic gap means being provided adjacent to and near the gap of the write pole-piece but insuring the second auxiliary magnetic gap means does not engage with the magnetic recording medium so that any leakage flux produced at the gap of the write pole-piece may be effectively cancelled by a leakage flux created at the second auxiliary magnetic gap means to reduce the feedthrough signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.