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:
Nov. 19, 2013
Filed:
Dec. 21, 2012
Sae Magnetics (H.k.) Ltd., Hong Kong, CN;
Tdk Corporation, Tokyo, JP;
Yasutoshi Fujita, Hong Kong, CN;
Ryuji Fujii, Hong Kong, CN;
Hideki Tanzawa, Hong Kong, CN;
Natsuo Nishijima, Hong Kong, CN;
Tai Boon Lee, GuangDong, CN;
Jian Hui Huang, GuangDong, CN;
Huan Chao Liang, GuangDong, CN;
Koji Shimazawa, Tokyo, JP;
Kei Hirata, Tokyo, JP;
Daisuke Miyauchi, Tokyo, JP;
SAE Magnetics (H.K.) Ltd., Hong Kong, CN;
TDK Corporation, Tokyo, JP;
Abstract
A thermally assisted magnetic head slider includes an air bearing surface facing to a magnetic recording medium, a read portion, and a write portion including a write element, a waveguide for guiding light generated by the light source module, and a plasmon unit provided around the write portion and the waveguide. A first coat layer with a first thickness which has a first light absorption index is covered on an opposed-to-medium surface of the read portion, and a second coat layer with a second thickness which has a second light absorption index is covered on an opposed-to medium surface of the write portion, wherein the second thickness is larger than the first thickness, and the second light absorption index is smaller than the first light absorption index. The slider can protect the write portion and improve the reading performance of the read portion.