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:
Dec. 26, 2006
Filed:
Oct. 18, 2005
Masayuki Kurita, Kanagawa-ken, JP;
Remmelt Pit, Cupertino, CA (US);
Shozo Saegusa, Ibaragi-ken, JP;
Toshiya Shiramatsu, Kanagawa-ken, JP;
Mike Suk, Palo Alto, CA (US);
Hideaki Tanaka, Kanagawa-ken, JP;
Masayuki Kurita, Kanagawa-ken, JP;
Remmelt Pit, Cupertino, CA (US);
Shozo Saegusa, Ibaragi-ken, JP;
Toshiya Shiramatsu, Kanagawa-ken, JP;
Mike Suk, Palo Alto, CA (US);
Hideaki Tanaka, Kanagawa-ken, JP;
Hitachi Global Storage Netherlands B.V., Amsterdam, NL;
Abstract
A method for selectively sensing and removing asperities from the surface of hard disk drive media is disclosed. A thermally controlled flying height burnish slider is flown on a test stand with its thermal flying height control deactivated. The burnish slider flies at a nominal flying height over the surface of the media to remove any existing loose particles from the surface. A glide slider coupled to a PZT sensor is then flown over the surface of the media, the PZT sensor head mapping locations of any asperities on the surface of the media. The thermal flying height controlled burnish slider is next flown over the surface of the media with the thermal flying height control activated. The thermal flying height control is actuated when a mapped location of an asperity on the surface is proximate to the burnish slider, causing the burnish slider to protrude, wearing off the asperity.