Patent ID: 6588091
Filing Date: 2003-07-08
Classification: B82Y,G11B,Y10T

Abstract:
A method of making a magnetic head having a top and a bottom and front and rear ends and an air bearing surface (ABS) that defines the front end, comprising:forming first and second pole piece layers with the first and second pole piece layers being separated by a write gap layer at the ABS and connected at a back gap that is recessed rearwardly in the head from the ABS; forming a zero throat height (ZTH) defining layer of baked photoresist that is sandwiched between the first and second pole piece layers with the ZTH defining layer having a rounded front edge where the first and second pole piece layers first separate from one another after the ABS to define the ZTH; and forming an insulation stack between the first and second pole piece layers wherein the insulation stack has at least first and second insulation layers with at least one coil layer embedded therein and with the insulation stacked placed so that the ZTH defining layer is located entirely between the ABS and the at least one coil layer.