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:
Jun. 06, 2000
Filed:
Mar. 19, 1998
Shinji Furuichi, Mooka, JP;
Kuniaki Yoshimura, Mooka, JP;
Hitachi Metals, Ltd., Tokyo, JP;
Abstract
A thin film magnetic head has, on the rear side of one and the other magnetic poles 2, 5 in the shape of a film formed on a substrate, a coil layer around a connection between both the magnetic poles, and on the end side of one and the other magnetic poles, a magnetic gap layer 3 between both the magnetic poles, and a non-magnetic track width regulating member 8 is provided on the opposite sides of both the magnetic poles 2, 5 and the magnetic gap layer 3, wherein the end of each track width regulating member 8 is positioned between the ends close to and distant from the magnetic gap layer in the other magnetic pole, and the other magnetic pole 5 formed by plating covers partially at least a portion of the end of each track width regulating member, or the end surfaces close to and distant from the magnetic gap layer in the other magnetic pole 5 are not parallel to each other. Thus, both the magnetic poles 2, 5 in the gap portion are formed to have the uniform and small width with high precision, resulting in prevention of side-fringing.