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:
Aug. 24, 2021
Filed:
Mar. 13, 2019
Applicant:
Maxell Holdings, Ltd., Kyoto, JP;
Inventors:
Assignee:
Maxell Holdings, Ltd., Kyoto, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 5/706 (2006.01); G11B 11/105 (2006.01); G11B 5/733 (2006.01); G11B 5/00 (2006.01);
U.S. Cl.
CPC ...
G11B 5/70642 (2013.01); G11B 5/733 (2013.01); G11B 11/105 (2013.01); G11B 11/10586 (2013.01); G11B 2005/0021 (2013.01);
Abstract
The magnetic recording medium disclosed in the present application includes a non-magnetic support, an undercoat layer, a magnetic layer containing magnetic particles, and a back coat layer. The coercive force Hc of the magnetic layer in the thickness direction at 25° C. is not 4100 oersteds (Oe) or more, and the coercive force Hc of the magnetic layer in the thickness direction at a temperature between 55° C. and 80° C. inclusive is not less than 1200 oersteds (Oe) and not more than 3700 oersteds (Oe).