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. 07, 2018
Filed:
Sep. 07, 2016
Applicant:
Fujifilm Corporation, Tokyo, JP;
Inventors:
Yoichi Hosoya, Minami-ashigara, JP;
Toshihide Aoshima, Minami-ashigara, JP;
Assignee:
FUJIFILM Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 5/706 (2006.01); G11B 5/70 (2006.01); G11B 5/714 (2006.01);
U.S. Cl.
CPC ...
G11B 5/70678 (2013.01); G11B 5/7013 (2013.01); G11B 5/714 (2013.01);
Abstract
The magnetic recording medium has a magnetic layer containing ferromagnetic powder and binder on a nonmagnetic support, wherein the ferromagnetic powder is hexagonal ferrite powder containing, based on number of particles, greater than or equal to 80% isotropic particles that satisfy the relation 1: major axis length/minor axis length <1.2, with an average particle size of the hexagonal ferrite powder being less than or equal to 30 nm, and a squareness in a vertical direction of the magnetic layer being greater than or equal to 0.65 but less than or equal to 1.00.