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:
Jan. 08, 2013
Filed:
Sep. 14, 2009
Magnetic recording head, method of manufacturing the same, and magnetic recording/reproducing device
Isao Nunokawa, Kanagawa, JP;
Mikito Sugiyama, Kanagawa, JP;
Kikuo Kusukawa, Saitama, JP;
Hiroyuki Hoshiya, Kanagawa, JP;
Isao Nunokawa, Kanagawa, JP;
Mikito Sugiyama, Kanagawa, JP;
Kikuo Kusukawa, Saitama, JP;
Hiroyuki Hoshiya, Kanagawa, JP;
Hitachi Global Storage Technologies Netherlands B.V., Amsterdam, NL;
Abstract
According to one embodiment, a magnetic recording head includes a main pole having a throat height portion and a flare portion that is connected to the throat height portion, the flare portion gradually being expanded in width to an upper part in an element height direction. The head also includes a sub pole, magnetic shields disposed via a nonmagnetic layer on a trailing side of the main pole and on both sides in a track width direction of the main pole, and a coil for generating a recording magnetic field from the main pole. The nonmagnetic layer has an upper portion of which the thickness is increased stepwise or in a tapered manner in the element height direction with respect to an ABS side, and each portion of the magnetic shields adjacent to the main pole has a shape corresponding to a surface shape of the nonmagnetic layer.