Composite magnetic head structure and process for manufacturing the same

Abstract

A composite head structure having a front core consisting of a non-magnetic spacing device for separating a read-write magnetic flux path from an erase magnetic flu path and first and second core chips adhered together with the spacing device interposed between them. A read/write gap is formed at the central portion of the first core chip which is parallel to the longitudinal direction of the spacing device and whose width is defined by first and second notches which extend from respective side edges of the first core chip. Erase gaps are formed in the second core chip which extend between the side edges of the second core chip parallel to the longitudinal direction of the spacing device and whose widths are defined by a third notch formed at a position substantially corresponding to the read/write gap as viewed along the direction of the arrangement of the first and second core chips. A back core is adhered to the front core and forms the read/write magnetic flux path and the erase magnetic flux path with the back core having a read/write magnetic leg forming the read/write magnetic flux path and an erase leg forming the erase magnetic flux path as well as a common leg forming both the magnetic flux paths. A fourth notch separates the magnetic flux paths formed at a position corresponding to the spacing device. a read/write winding is wound on the read/write leg and an erase winding is wound on the erase leg.