Method for manufacturing a magnetic head
US5815910A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 14, 1995 |
| Grant date | Oct 6, 1998 |
| Priority date | — |
| Expiry date | Jul 14, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49057
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method for manufacturing a magnetic head recording and reproducing information on or from magnetic recording media such as a video tape, includes the steps of preparing a chip core having a contact surface with which a magnetic tape contacts and on which a gap for forming a leakage magnetic field is formed, polishing the contact surface of the chip core by using an ion etching method where the contact surface is bombarded with ions, and forming a protection layer on the contact surface, which is made of a material having high surface lubrication properties and good anti-abrasion properties. In the above method, the contamination of the head is reduced, the life span of the head is prolonged and the magnetic recording and reproducing characteristics are improved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.