Yamaha Corporation

Shuichi Sawada

Shigeru Shouji

On a substrate, a lower pole is formed being embedded in a protective film on which a gap layer is formed. On this gap layer, a first upper pole is formed facing the lower pole. A protective film is formed coplanar to the upper surface of the first upper pole. On this protective film, a coil made of a plurality of coil layers is formed being embedded in an insulating film. On the insulating film, an upper core layer is formed whose tip portion constitutes a second upper pole stacked upon the first upper pole and magnetically coupled thereto. The first upper pole formed before the coil is formed and the second upper pole formed after the coil is formed, constitute an upper pole.

Thin film magnetic head with special pole configuration

Projected ABSs (air bearing surfaces) are formed on a disk facing plane of a slider. Three-dimensional corners constituting the corners of ABSs are chamfered. Two-dimensional corners constituting side edges of ABSs are not chamfered and has sharp edges. Damages of a disk surface and breakage of the slider are prevented when the slider collides with the disk surface by external shock.

Growing community of inventors

San Jose, CA, United States of America

Shuichi Sawada