Patent ID: 7943288
Filing Date: 2011-05-17
Classification: G11B,Y10T

Abstract:
1. A method of manufacturing a thin-film magnetic head structure adapted to manufacture a thin-film magnetic head comprising a main magnetic pole layer having a magnetic pole end part on a side of a medium-opposing surface opposing a recording medium; a write shield layer opposing the magnetic pole end part so as to form a recording gap layer on the medium-opposing surface side; a thin-film coil wound about the write shield layer or main magnetic pole layer; and a base insulating layer formed with a magnetic pole forming depression, filled with the main magnetic pole layer, including a very narrow groove part defining a form of the magnetic pole end part and a main depression integrally extending from an end part of the very narrow groove part remote from the medium-opposing surface; the method comprising, when forming the base insulating layer with the magnetic pole forming depression, the steps of: forming a first resist layer on the base insulating layer, the first resist layer having a first slit pattern corresponding to the very narrow groove part in the magnetic pole forming depression and a second slit pattern integrally extending from the first slit pattern and corresponding to a temporary groove part integrally extending from the very narrow groove part along an outer edge of the main depression; etching the base insulating layer while using the first resist layer as a mask; forming a second resist layer having an opening pattern corresponding to the main depression on the base insulating layer after removing the first resist layer; and etching the base insulating layer while using the second resist layer as a mask.