Method of making a high density multitrack magnetic head
US4114259A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 26, 1977 |
| Grant date | Sep 19, 1978 |
| Priority date | — |
| Expiry date | Sep 26, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49053
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The front face of a multitrack magnetic head has a stack of track defining pole pairs and spacers between the pole pairs of adjacent tracks. The spacers are slotted, and shields reside in the slots. A chamfer runs longitudinally of the stack. Embracing opposite sides of the stack and parallel to the chamfer, are non-magnetic wing parts, such parts being part of a surround used in the manufacture of the front face. Bonding glass, in the form of a unitary "lattice" fills the chamfer, and the spacings between the ceramic and shields, and the wing parts and stack. The method for forming the head employs a surround having a depth greater than the depth of the stack, thereby forming a basin for accepting the bonding glass.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.