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. 22, 2022
Filed:
Jan. 28, 2019
Applicant:
Fujifilm Corporation, Tokyo, JP;
Inventor:
Takashi Fujimoto, Kanagawa, JP;
Assignee:
FUJIFILM CORPORATION, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11B 5/712 (2006.01); G11B 5/71 (2006.01); G11B 5/706 (2006.01); G11B 5/714 (2006.01); C01G 49/00 (2006.01);
U.S. Cl.
CPC ...
G11B 5/70642 (2013.01); C01G 49/0045 (2013.01); G11B 5/71 (2013.01); G11B 5/712 (2013.01); G11B 5/714 (2013.01); C01P 2002/90 (2013.01); C01P 2004/64 (2013.01); C01P 2006/42 (2013.01);
Abstract
Provided are a magnetic recording medium including: a non-magnetic support; and a magnetic layer which is provided on at least one surface of the non-magnetic support and includes particles of epsilon type iron oxide-based compound, and a binding agent, in which a contact angle measured regarding a surface of the magnetic layer is equal to or greater than 30.0° and smaller than 45.0° with respect to 1-bromonaphthalene and 80.0° to 95.0° with respect to water, a manufacturing method of particles of an epsilon iron oxide-based compound, and a manufacturing method of a magnetic recording medium.