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:
Jul. 17, 2007
Filed:
Apr. 27, 2004
Susumu Aoki, Tokyo, JP;
Yasuyuki Notsuke, Tokyo, JP;
Yuichi Watabe, Tokyo, JP;
Norikazu Ota, Tokyo, JP;
Tetsuya Roppongi, Tokyo, JP;
Susumu Aoki, Tokyo, JP;
Yasuyuki Notsuke, Tokyo, JP;
Yuichi Watabe, Tokyo, JP;
Norikazu Ota, Tokyo, JP;
Tetsuya Roppongi, Tokyo, JP;
TDK Corporation, Tokyo, JP;
Abstract
A write head of a magnetic head for vertical magnetic recording comprises: a coil; a main pole layer that allows the magnetic flux corresponding to the magnetic field generated by the coil to pass therethrough and generates a write magnetic field; an auxiliary pole layer; a gap layer provided between the main pole layer and the auxiliary pole layer; and a yoke layer for magnetically coupling the main pole layer to the auxiliary pole layer. The main pole layer has a flat top surface. In the main pole layer the position in which the thickness starts to increase is located between the medium facing surface and the position in which the width starts to increase.