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. 26, 2012
Filed:
Jan. 15, 2010
Kosuke Tanaka, Tokyo, JP;
Daisuke Miyauchi, Tokyo, JP;
Susumu Aoki, Tokyo, JP;
Tetsuya Roppongi, Tokyo, JP;
Tsutomu Chou, Tokyo, JP;
Takahiko Izawa, Tokyo, JP;
Katsuki Kurihara, Tokyo, JP;
Kosuke Tanaka, Tokyo, JP;
Daisuke Miyauchi, Tokyo, JP;
Susumu Aoki, Tokyo, JP;
Tetsuya Roppongi, Tokyo, JP;
Tsutomu Chou, Tokyo, JP;
Takahiko Izawa, Tokyo, JP;
Katsuki Kurihara, Tokyo, JP;
TDK Corporation, Tokyo, JP;
Abstract
A thermally-assisted magnetic recording head includes a waveguide, a near-field optical device which emits near-field light from a near-field-light-generating end surface that forms a portion of an opposed-to-medium surface, and a magnetic pole generates write field from its end on the opposed-to-medium surface side. The near-field optical device includes a contact-to-waveguide surface, and a propagation edge configured to propagate there on the surface plasmon excited by the light. A gap between a near-field optical device-opposed surface of the magnetic pole and the propagation edge of the near-field optical device is larger at a section far from the end on the opposed-to-medium surface side than that at a section near the opposed-to-medium surface side.