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:
Mar. 27, 2012
Filed:
Nov. 20, 2008
Yosuke Antoku, Tokyo, JP;
Takeo Kagami, Tokyo, JP;
Katsuki Kurihara, Tokyo, JP;
Taro Oike, Tokyo, JP;
Masashi Sano, Tokyo, JP;
Yosuke Antoku, Tokyo, JP;
Takeo Kagami, Tokyo, JP;
Katsuki Kurihara, Tokyo, JP;
Taro Oike, Tokyo, JP;
Masashi Sano, Tokyo, JP;
TDK Corporation, Tokyo, JP;
Abstract
The present invention relates to a magnetic head, a head assembly, and a magnetic recording/reproducing apparatus which are capable of effectively detecting thermal asperity. The magnetic head according to the present invention includes a heat-generating resistor, a recording coil, and a resistive element. The heat-generating resistor is adapted to generate heat when power is fed thereto so that the heat generation causes at least a part of the air bearing surface to thermally expand and protrude. The recording coil is adapted to generate a recording magnetic field, and the resistive element is disposed closer to the air bearing surface than the recording coil and connected in series or in parallel with the heater. Thus, the resistive element can share a common wiring with the heater for power feeding, which eliminates the waste of wiring and achieves miniaturization.