Patent ID: 7093348
Filing Date: 2006-08-22
Classification: G11B,Y10T

Abstract:
1. A method of manufacturing a thin film magnetic head including two magnetic layers magnetically coupled to each other having two magnetic poles which face each other with a gap layer in between and are to be faced with a recording medium, a thin film coil provided between the two magnetic layers, and an insulating layer for insulating the thin film coil from the two magnetic layers; formation of one of the two magnetic layers is performed by the steps of: forming a first magnetic layer portion extending from recording-medium-facing surface in a longitudinal direction to be away from the recording-medium-facing surface, and having a constant width for defining a write track width of the recording medium; and forming a second magnetic layer portion magnetically coupled to the first magnetic layer portion in the rear edge of the first magnetic layer portion on the side away from the recording-medium-facing surface; wherein a coupling position at which the first and second magnetic layer portions are coupled to each other is closer to the recording-medium-facing surface than a front edge of the insulating layer, the front edge determining a throat height at least a portion of the second magnetic layer portion between the front edge of the insulating layer and the rear edge of the first magnetic layer portion has a width wider than that of the first magnetic layer portion; and further comprising a magnetic transducer film extending from the recording-medium-facing surface in a longitudinal direction to be away from the recording-medium-facing surface wherein: the coupling position is located between the rear edge of the magnetic transducer film and the front edge of the insulating layer.