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. 22, 2009
Filed:
Jan. 11, 2008
Mitsuru Takai, Tokyo, JP;
Shuichi Okawa, Tokyo, JP;
Mitsuru Takai, Tokyo, JP;
Shuichi Okawa, Tokyo, JP;
TDK Corporation, Tokyo, JP;
Abstract
On a magnetic recording medium, data track patterns and servo patterns are formed on one surface and another surface of a disk-shaped substrate by patterns including recording regions and non-recording regions. In the data track patterns on the one surface, the non-recording regions are formed at formation positions on the one surface corresponding to formation positions of recording regions in the data track patterns on the other surface and the recording regions are formed at formation positions on the one surface corresponding to formation positions of non-recording regions in the data track patterns on the other surface, and in the servo patterns on the one surface, the non-recording regions are formed at formation positions on the one surface corresponding to formation positions of recording regions in the servo patterns on the other surface and the recording regions are formed at formation positions on the one surface corresponding to formation positions of non-recording regions in the servo patterns on the other surface.