Patent · US Expired

Magnetic head with laminated structure

US4843507A · kind A · utility

12Cited by

2References

11Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Herbert Schewe · Herzogenaurach, DE
Dietrich Stephani · Bubenreuth, DE
Armin Lenhart · Erlangen, DE

Key dates

Filing date	Nov 30, 1987
Grant date	Jun 27, 1989
Priority date	—
Expiry date	Nov 30, 2007

Classification

Technology area (CPC G)Physics
CPC primaryG11B5/1278
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

A magnetic head having layered structure for a recording medium for vertical magnetization contains a conductor body on a non-magnetic substrate for conducting the magnetic flux with two magnet legs, the end pieces of which form a thin main pole and a comparatively thicker auxiliary pole. The two magnetic poles are separated by an insulating gap layer of at least 5 .mu.m. This magnetic head and particularly its gap layer should be relatively simple to produce. Recesses are provided in the substrate to submerge at least the end piece of the auxiliary pole of one magnet leg and an adjoining part of this leg as well as at least part of the gap layer.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.