Patent ID: 6768611
Filing Date: 2004-07-27
Classification: G11B

Abstract:
A thin film magnetic head comprising:a lower core layer; a recording core exposed at a face surface facing a recording medium and comprising a lower pole layer, a gap layer and an upper pole layer which are sequentially laminated in turn on the lower core layer; an upper core layer magnetically connected to the upper pole layer of the recording core; and a coil for inducing a recording magnetic field in the lower core layer, the recording core and the upper core layer; wherein a front surface of the upper core layer facing the recording medium is a curved surface which gradually retreats in a height direction, wherein the height direction is a direction that is generally perpendicular to the face surface as it approaches side surfaces of the upper core layer that are displaced away from one another in a track width direction, wherein the track width direction is a direction that is generally parallel to the face surface, wherein the front surface of the upper core layer is one of an inclined surface or a curved surface so that the thickness of the upper core layer gradually increases in the height direction, and wherein a line tangent to terminating points of the curved surface in the track width direction has an inclination angle of about 30Â° to about 60Â° with respect to the track width direction.