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:
Oct. 01, 2024
Filed:
Apr. 10, 2023
Applicant:
Fujifilm Corporation, Tokyo, JP;
Inventors:
Nagisa Yamasaki, Minamiashigara, JP;
Norihito Kasada, Minamiashigara, JP;
Yuto Murata, Minamiashigara, JP;
Assignee:
FUJIFILM Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 5/78 (2006.01); G11B 5/70 (2006.01); G11B 5/592 (2006.01); G11B 5/84 (2006.01);
U.S. Cl.
CPC ...
G11B 5/78 (2013.01); G11B 5/70 (2013.01); G11B 5/5928 (2013.01); G11B 5/84 (2013.01);
Abstract
The magnetic tape includes: a non-magnetic support; and a magnetic layer containing a ferromagnetic powder, and a magnetic tape cartridge and a magnetic tape apparatus include the magnetic tape. The number of recesses existing on a surface of the magnetic layer and having an equivalent circle diameter of 0.15 μm or more and 0.25 μm or less is 100 or more and 2500 or less per an area of 40 μm×40 μm. Standard deviation σ of the number of the recesses in a width direction of the surface of the magnetic layer is 100 or less.