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:
Aug. 05, 2014
Filed:
Dec. 09, 2009
Yoshiaki Sonobe, Tokyo, JP;
Akira Shimada, Tokyo, JP;
Tsuyoshi Ozawa, Tokyo, JP;
Masanori Aniya, Tokyo, JP;
Yoshiaki Sonobe, Tokyo, JP;
Akira Shimada, Tokyo, JP;
Tsuyoshi Ozawa, Tokyo, JP;
Masanori Aniya, Tokyo, JP;
WD Media (Singapore) Pte. Ltd., Singapore, SG;
Abstract
[Problem] An object is to provide a magnetic recording medium with improved HDI characteristics, such as impact resistance, and its manufacturing method. [Solution] A typical structure of a magnetic recording mediumaccording to the present invention includes, on a base, at least a magnetic recording layer, a protective layer, and a lubricating layer, wherein the magnetic recording layerincludes, in an in-plane direction, a magnetic recording partconfigured of a magnetic material and a non-recording partmagnetically separating the magnetic recording part, and a surface corresponding to the non-recording partprotuberates more than a surface corresponding to the magnetic recording part