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:
Feb. 01, 2011
Filed:
Feb. 27, 2009
Akimasa Kaizu, Tokyo, JP;
Satoshi Tomikawa, Tokyo, JP;
Yoshikazu Soeno, Tokyo, JP;
TDK Corporation, Tokyo, JP;
Abstract
In the magnetic recording apparatus, a recording layer is formed in a concavo-convex pattern, and recording elements are formed of convex portions of the concavo-convex pattern. Furthermore, the following equation (I)+2×  (Equation (I))is satisfied in each of tracks, where Brepresents a length of the recording element in a circumferential direction, Grepresents a length of a gap between the recording elements in the circumferential direction, and Erepresents an effective recording length which is a length of an effective recording area Ein the circumferential direction, the effective recording area Ebeing created on a magnetic recording medium by a heating head and a recording head.