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:
Jan. 07, 2020
Filed:
Nov. 16, 2015
Applicant:
Sony Corporation, Tokyo, JP;
Inventors:
Junichi Tachibana, Miyagi, JP;
Tetsuo Endo, Miyagi, JP;
Tomoe Ozaki, Miyagi, JP;
Hikaru Terui, Miyagi, JP;
Assignee:
Sony Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 5/66 (2006.01); G11B 5/78 (2006.01); G11B 5/65 (2006.01); G11B 5/667 (2006.01); G11B 5/725 (2006.01); G11B 5/73 (2006.01);
U.S. Cl.
CPC ...
G11B 5/78 (2013.01); G11B 5/65 (2013.01); G11B 5/667 (2013.01); G11B 5/725 (2013.01); G11B 5/7315 (2013.01); G11B 5/7325 (2013.01);
Abstract
A magnetic recording medium includes a long-shaped base substrate having flexibility, a soft magnetic layer, and a magnetic recording layer. A squareness ratio in a longitudinal direction of the base substrate is equal to or less than a squareness ratio in a short-side direction of the base substrate. The squareness ratio in the longitudinal direction of the base substrate is 30% or less.