Patent ID: 6134080
Filing Date: 2000-10-17
Classification: B82Y,G11B,Y10T

Abstract:
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:first and second pole piece layers, the second pole piece layer being located above the first pole piece layer;a write gap layer;the first and second pole piece layers being separated by the write gap layer at the ABS and connected at a back gap that is recessed rearwardly in the head from the ABS;a zero throat height (ZTH) defining layer sandwiched between the first and second pole piece layers;the ZTH defining layer being baked photoresist so as to have a sloping front edge and a sloping rear edge;each of the sloping front edge and the sloping rear edge extending parallel to the ABS;the sloping front edge of the ZTH defining layer being recessed rearwardly from the ABS in a location between the ABS and the back gap and causing the first and second pole piece layers to first separate from one another after the ABS to define the ZTH;an insulation stack having at least first and second insulation layers;at least one coil layer embedded in the insulation stack;the insulation stack and the at least one coil layer being located between the first and second pole piece layers;said at least one coil layer having a front end that is recessed rearwardly in the head so as to be spaced from the ABS; andthe ZTH defining layer being located between the ABS and the front end of said at least one coil layer with the sloping front edge spaced from and closer to the ABS than the sloping rear edge and the sloping rear edge spaced from and closer to the front end of the coil layer than the sloping front edge.