Patent ID: 7002777
Filing Date: 2006-02-21
Classification: G11B

Abstract:
1. An inductive thin film magnetic head, in which: at least a lower magnetic core layer, a nonmagnetic layer and an upper magnetic core layer are laminated on a substrate; each of said lower magnetic core layer and said upper magnetic core layer has a protrusion at an edge portion thereof on a side of a medium facing plane opposed to a magnetic recording medium, which protrudes with a predetermined track width corresponding to a recording track to be formed on said magnetic recording medium; a magnetic gap is formed by disposing each of said protrusions adjacent to each other in a direction of lamination via said nonmagnetic layer; said lower magnetic core layer and said upper magnetic core layer are connected at other edge portions thereof remote from said medium facing plane in a direction of depth therefrom; and a thin film coil is wound around said other edge portions connected, wherein: said magnetic gap is disposed on said medium facing plane slantingly relative to a direction orthogonal to a scanning direction of said head corresponding to an azimuth angle, said upper magnetic core layer is disposed on a leading side in the scanning direction of said head, preceding said lower magnetic core layer, said protrusion on the side of said lower magnetic core layer has an inclined side surface inclined at an angle equal to or greater than said azimuth angle at least on one side in a direction of a track width thereof, and at least one edge of a side adjacent to said magnetic gap of the protrusion of said upper magnetic core layer is aligned on a line drawn extending from said inclined side surface of said protrusion on the lower magnetic core layer.