The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 26, 2006
Filed:
Jun. 19, 2003
Hiroshi Fukui, Hitachi, JP;
Shigekazu Otomo, Sayama, JP;
Shuichi Kojima, Hiratsuka, JP;
Kouji Kataoka, Odawara, JP;
Hiroshi Fukui, Hitachi, JP;
Shigekazu Otomo, Sayama, JP;
Shuichi Kojima, Hiratsuka, JP;
Kouji Kataoka, Odawara, JP;
Hitachi Global Storage Technologies Japan, Ltd., Tokyo, JP;
Abstract
A recording/reproducing separated type magnetic head comprising a first magnetic domain control layer for arranging the magnetizing direction of a free layer included in a magneto-resistive element to a predetermined direction, and a second magnetic domain control layer for generating a magnetic field in the direction opposite thereto to constitute a differential type bias structure. The recording/reproducing separated type magnetic head decreases an excessively strengthened longitudinal bias magnetic field in a central portion at a narrow track width while avoiding decrease of the fixed magnetic field at the end of the magneto-resistive element in the direction of the track width.