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:
Apr. 22, 2014
Filed:
Aug. 21, 2012
Tomoko Taguchi, Kunitachi, JP;
Kenichiro Yamada, Tokyo, JP;
Katsuhiko Koui, Yokohama, JP;
Tomomi Funayama, Fuchu, JP;
Norihito Fujita, Fuchu, JP;
Tomoko Taguchi, Kunitachi, JP;
Kenichiro Yamada, Tokyo, JP;
Katsuhiko Koui, Yokohama, JP;
Tomomi Funayama, Fuchu, JP;
Norihito Fujita, Fuchu, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
According to one embodiment, a main pole of a recording head includes a first magnetic pole layer and a second magnetic pole layer laminated on the trailing side of the first magnetic pole layer. The first magnetic pole layer includes a tapered portion and a first tip portion. The second magnetic pole layer includes a tapered portion and a second tip portion. A width in a track direction of the second tip portion is smaller than that of the first tip portion. The high-frequency oscillator is between the second tip portion and the trailing shield and includes a width in the track direction substantially equal to the width in the track direction of the second tip portion, and a height of the first tip portion is taller than that of the second tip portion.