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:
Nov. 30, 2010
Filed:
May. 21, 2007
Kei Hirata, Tokyo, JP;
Norikazu Ota, Tokyo, JP;
Yuichi Watabe, Tokyo, JP;
Tetsuro Sasaki, Tokyo, JP;
Takeo Kagami, Tokyo, JP;
Tetsuya Roppongi, Tokyo, JP;
Kazuki Sato, Tokyo, JP;
Yuji Otsubo, Tokyo, JP;
Sohei Horiuchi, Tokyo, JP;
Yoshiaki Tanaka, Tokyo, JP;
Kenji Yokoyama, Tokyo, JP;
Noriaki Kasahara, Tokyo, JP;
Kei Hirata, Tokyo, JP;
Norikazu Ota, Tokyo, JP;
Yuichi Watabe, Tokyo, JP;
Tetsuro Sasaki, Tokyo, JP;
Takeo Kagami, Tokyo, JP;
Tetsuya Roppongi, Tokyo, JP;
Kazuki Sato, Tokyo, JP;
Yuji Otsubo, Tokyo, JP;
Sohei Horiuchi, Tokyo, JP;
Yoshiaki Tanaka, Tokyo, JP;
Kenji Yokoyama, Tokyo, JP;
Noriaki Kasahara, Tokyo, JP;
TDK Corporation, Tokyo, JP;
Abstract
Provided is a thin film magnetic head capable of suppressing an occurrence of a track erase, decreasing an influence on a magnetoresistive element caused by a magnetic flux generated from a thin film coil, and further decreasing the parasitic capacity. The thin film magnetic head has, in order in a stacked direction, a first magnetic shield layer, a magnetoresistive element, a second magnetic shield layer, a third magnetic shield layer, a main magnetic pole layer and a return yoke layer. A width in a track width direction of at least one of the first and the second magnetic shield layers is smaller than widths in a track width direction of the third magnetic shield layer and the return yoke layer.