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:
Oct. 15, 2013
Filed:
Jun. 01, 2009
Kei Hirata, Tokyo, JP;
Takeo Kagami, Tokyo, JP;
Tatsuhiro Nojima, Tokyo, JP;
Hisayoshi Watanabe, Tokyo, JP;
Michitaka Nishiyama, Tokyo, JP;
Kei Hirata, Tokyo, JP;
Takeo Kagami, Tokyo, JP;
Tatsuhiro Nojima, Tokyo, JP;
Hisayoshi Watanabe, Tokyo, JP;
Michitaka Nishiyama, Tokyo, JP;
TDK Corporation, Tokyo, JP;
Abstract
A perpendicular magnetic write head includes: a magnetic pole having an end face on an air bearing surface; and side shield layers each having an end face on the air bearing surface, and arranged on both sides, in a write track width direction, of the magnetic pole with a side gap in between. The end face of the magnetic pole has a geometry in which a width at a trailing edge is larger than a width at a leading edge. Relationship D1<D2, D1<D3, and D3≧D2 are satisfied in the air bearing surface, where D1 is a gap length of the side gap at the trailing edge, D2 is a gap length of the side gap at the leading edge, and D3 is a gap length of the side gap at any position between the trailing edge and the leading edge.