Patent ID: 6451514
Filing Date: 2002-09-17
Classification: G11B,Y10T

Abstract:
A method of forming an upper magnetic pole layer of a thin film magnetic head having a pole part and a yoke part, comprising:forming by layering an approximately flat lower magnetic pole layer, a magnetic gap layer, at least one thin film coil layer, and an insulating layer covering the at least one coil layer, of a plated base film, on a surface of a substrate; forming by vacuum thin film formation a first resist layer of approximately uniform film thickness over an entirety of the plated base film; forming on top of the first resist layer a relatively thin second resist layer; patterning the second resist layer in a planar shape of the upper magnetic pole layer; patterning by anisotropic dry etching the first resist layer using the patterned second resist layer as a mask; and forming by wet plating the upper magnetic pole layer on an exposed region of the plated base film using the patterned first resist layer as a frame.