Patent · US Active

Magnetic head including a main pole and a write shield to provide improved write characteristics without compromising the function of the write shield

US9489969B1 · kind B1 · utility

7Cited by

12References

8Claims

0Family size

Assignee

Headway Technologies, Inc. · US

Inventors

Yukinori Ikegawa · Kawasaki, JP
Yoshitaka Sasaki · Milpitas, US
Kazuki Sato · Milpitas, US
Shigeki Tanemura · Milpitas, US
Hironori Araki · Milpitas, US
Seiichiro Tomita · Milpitas, US

Key dates

Filing date	Oct 28, 2015
Grant date	Nov 8, 2016
Priority date	—
Expiry date	Oct 28, 2035

Classification

Technology area (CPC G)Physics
CPC primaryG11B5/3169
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

A magnetic head includes a main pole, a write shield and a gap section. The write shield includes a leading shield having a top surface opposed to a bottom end of the main pole. The gap section includes a leading gap section for separating the leading shield from the bottom end of the main pole. The leading gap section is formed using a first nonmagnetic layer and a second nonmagnetic layer. The first nonmagnetic layer has a first front end located closest to but at a distance from the medium facing surface. The second nonmagnetic layer has a second front end located in the medium facing surface.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.