Patent ID: 7433151
Filing Date: 2008-10-07
Classification: G11B,Y10T

Abstract:
1. A magnetic head substructure used for manufacturing magnetic heads, each of the magnetic heads comprising: a medium facing surface that faces toward a recording medium; a coil that generates a magnetic field corresponding to data to be written on the recording medium; and a pole layer that incorporates a track width defining portion having an end face located in the medium facing surface, the pole layer allowing a magnetic flux corresponding to the field generated by the coil to pass therethrough and generating a write magnetic field for writing the data on the recording medium, the substructure comprising: a substrate; a plurality of sets of the pole layer and the coil formed in the substrate, such that a plurality of rows of pre-head portions that will be the respective magnetic heads later are aligned; a plurality of indicators each of which serves as a reference for indicating a region in which the medium facing surfaces of the magnetic heads are to be formed; and a plurality of magnetic layers each of which includes: a pole-layer-corresponding portion that will be one of the pole layers; an indicator portion corresponding to one of the indicators; and a coupling portion that couples the pole-layer-corresponding portion and the indicator portion to each other.