Patent ID: 7716811
Filing Date: 2010-05-18
Classification: G11B,Y10T

Abstract:
1. A method for manufacturing a thin film magnetic head comprising the steps of: forming a plurality of head elements including read elements on a wafer; cutting the wafer into row bars; a first air bearing surface polishing step of polishing surfaces to be used as air bearing surfaces of the head in order to achieve a predetermined height of the read elements; a second air bearing surface polishing step of polishing the polished surfaces to be used as the air bearing surfaces for finishing the polished surfaces as the air bearing surfaces having a predetermined shape while measuring resistances of the read elements by using a resistance measurement unit for measuring the resistances of the read elements to each of which a band-pass filter for passing a discharge of frictional charge generated during the polishing of the surfaces to be used as the air bearing surfaces is connected at a position between wiring patterns connected to terminals of the read element; and forming rails on the finished air bearing surfaces having the predetermined shape.