Magnetic reproducing head having a structure to inhibit electrostatic discharge damage to a recording tape
US7009819B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 9, 2002 |
| Grant date | Mar 7, 2006 |
| Priority date | — |
| Expiry date | Apr 7, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/3903
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A head substrate and a protective substrate are formed of an electrostatic-discharge resistant conductive material having an electrical resistivity of 102 to 1010 Ωcm. These substrates are electrically connected to a base metal through the use of conductive paste and are set to a ground potential via the base metal and a rotating drum. This suppresses a discharge current flowing through an MR element when an electrostatically charged substance touches or approaches a magnetic reproducing head, a terminal, a conducting wire, etc. to generate an electrostatic discharge. The magnetic reproducing head including an MR element and the like is prevented against an electrostatic discharge damage. It is possible to provide the magnetic reproducing head, a head drum apparatus, and a magnetic recording-reproducing apparatus which can highly effectively prevent an electrostatic discharge damage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.