Patent ID: 6609291
Filing Date: 2003-08-26
Classification: G11B,Y10T

Abstract:
A method of manufacturing a thin film magnetic head comprising the steps of:forming a first magnetic layer having a first pole portion such that the first magnetic layer is support by a substrate; forming a band-shaped insulating layer on said first magnetic layer, said band-shaped insulating layer having at least a portion whose edge defines a reference position for an air bearing surface; forming a gap layer made of non-magnetic material on at least said first pole portion of the first magnetic layer; forming a second magnetic layer, having a second pole portion, on said gap layer at least at a portion of the gap layer situated on said first magnetic layer; forming a thin film coil in a rear region on a side of the band-shaped insulating layer opposite to said air bearing surface such that the thin film coil is supported by an insulating material in an electrically isolated manner; forming a third magnetic layer such that the third magnetic layer is coupled with said second magnetic layer as well as with said first magnetic layer at a rear portion opposite to said air bearing surface; and polishing the substrate, the first pole portion of the first magnetic layer and the second pole portion of the second magnetic layer and the gap layer sandwiched between the first magnetic layer and the second magnetic layer to form the air bearing surface which is to be opposed to a magnetic record medium.