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:
May. 17, 2011
Filed:
Oct. 18, 2005
Magnetic recording medium with diamond-like carbon protective film, and manufacturing method thereof
Naoto Endou, Kanagawa, JP;
Shigehiko Fujimaki, Tokyo, JP;
Hiroyuki Matsumoto, Kanagawa, JP;
Toshinori Ono, Tokyo, JP;
Naoto Endou, Kanagawa, JP;
Shigehiko Fujimaki, Tokyo, JP;
Hiroyuki Matsumoto, Kanagawa, JP;
Toshinori Ono, Tokyo, JP;
Hitachi Global Storage Technologies Netherlands B.V., Amsterdam, NL;
Abstract
Embodiments of the invention provide a magnetic recording medium superior in terms magnetic head flying performance, abrasion resistant reliability and corrosion resistance and a method for manufacturing the same. In one embodiment, method for manufacturing a magnetic recording medium, comprising forming at least an adhesion layer, a soft magnetic layer, a granular magnetic film and a diamond-like carbon (DLC) protective film on a nonmagnetic substrate. While the DLC protective film layer to protect the granular magnetic layer of the magnetic recording medium is formed, hydrocarbon gas is mixed with hydrogen gas and a bias voltage is applied to the substrate.