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:
Sep. 24, 2013
Filed:
Aug. 25, 2011
Takekazu Yamane, Tokyo, JP;
Yosuke Antoku, Tokyo, JP;
Katsuki Kurihara, Tokyo, JP;
Norio Takahashi, Tokyo, JP;
Kenzo Makino, Tokyo, JP;
Takekazu Yamane, Tokyo, JP;
Yosuke Antoku, Tokyo, JP;
Katsuki Kurihara, Tokyo, JP;
Norio Takahashi, Tokyo, JP;
Kenzo Makino, Tokyo, JP;
TDK Corporation, Tokyo, JP;
Abstract
A magnetic head includes a medium facing surface that faces a surface of a recording medium, a write head section, a contact sensor that detects contact of the medium facing surface with the surface of the recording medium, and a heat sink adjacent to the contact sensor. The write head section has a magnetic pole that produces a write magnetic field for writing data on the recording medium. The contact sensor and the heat sink have respective end faces located in the medium facing surface. The contact sensor varies in resistance in response to temperature variations, and is to be energized. The heat sink includes an intermediate layer made of a nonmagnetic metal material, and two ferromagnetic layers made of a metal-based magnetic material, the two ferromagnetic layers being disposed with the intermediate layer therebetween, and being antiferromagnetically exchange-coupled to each other via the intermediate layer.