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. 19, 2016
Filed:
Feb. 28, 2013
Fuji Electric Co., Ltd., Kawasaki-shi, JP;
Tomonori Katano, Matsumoto, JP;
FUJI ELECTRIC CO., LTD., Kawasaki-Shi, JP;
Abstract
A recording medium includes a magnetic recording layer formed on a substrate; a protective layer formed on the magnetic recording layer and having a total thickness that is equal to or greater than 1 nm but equal to or less than 2 nm. The protective layer is composed of a silicon oxide layer formed on the magnetic recording layer and having a thickness of 0.3 nm or more; a silicon layer formed on the silicon oxide layer and having a thickness of 0.2 nm or more; and an amorphous carbon layer formed on the silicon layer and having a thickness of 0.2 nm or more, and having a hydrogen content equal to or greater than 25.6 at % but equal to or less than 43.3 at %. Thus, magnetic spacing between the magnetic recording layer and a magnetic head advantageously may be reduced while maintaining the thermal insulation characteristics.