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:
Nov. 23, 2021
Filed:
Jul. 01, 2020
Applicant:
Sony Corporation, Tokyo, JP;
Inventors:
Assignee:
Sony Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 5/706 (2006.01); G11B 5/714 (2006.01); G11B 15/43 (2006.01); G11B 5/008 (2006.01); G11B 5/735 (2006.01); G11B 5/588 (2006.01); G11B 5/584 (2006.01);
U.S. Cl.
CPC ...
G11B 5/70678 (2013.01); G11B 5/00817 (2013.01); G11B 5/714 (2013.01); G11B 5/735 (2013.01); G11B 15/43 (2013.01); G11B 5/584 (2013.01); G11B 5/588 (2013.01);
Abstract
The present disclosure provides a tape-shaped magnetic recording medium, including: a base; and a magnetic layer that is provided on the base and contains a magnetic powder, in which an average particle volume V of the magnetic powder is 2,000 nmor less, an average thickness of the magnetic recording medium is 5.3 μm or less, a thermal stability KV/kT of the magnetic recording medium is 60 or more, and a ratio Hrp/Hc1 of a residual coercive force Hrp of the magnetic recording medium measured using a pulsed magnetic field to a coercive force Hc1 of the magnetic recording medium in a perpendicular direction is 2.10 or less.