Patent Number: 7,821,745

Title: Thin-film magnetic head in which perpendicular magnetic record head overlaps on reproducing head

Abstract: A thin-film magnetic head is provided. The thin-film magnetic head includes a return-yoke layer formed on an opposed surface such that a maximum length of the return-yoke layer is shorter than a longer length of the length of the upper shield layer and the lower shield layer. The length sets in the range of 0 to 2 .mu.m, and more preferably 2 .mu.m. Accordingly, magnitudes of leakage magnetic fields leaked from each front end surface of return-yoke layer, the upper shield layer, and the lower shield layer toward the record medium are balanced and reduced. An advantage of the invention is to provide a thin-film magnetic head so as to prevent a record data recorded in a record medium from being erased.

Inventors: Kameda; Hiroshi (Niigata-ken, JP), Touma; Yusuke (Niigata-ken, JP)

Assignee: TDK Corporation

International Classification: G11B 5/187 (20060101); G11B 5/39 (20060101)

Expiration Date: 2018-10-26 0:00:00