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. 04, 2025
Filed:
Jun. 28, 2024
Applicant:
Fujifilm Corporation, Tokyo, JP;
Inventors:
Junya Sawada, Minamiashigara, JP;
Norihito Kasada, Minamiashigara, JP;
Nobuhito Onozuka, Minamiashigara, JP;
Ryosuke Yumiyama, Minamiashigara, JP;
Assignee:
FUJIFILM Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 5/706 (2006.01); G11B 5/592 (2006.01); G11B 5/714 (2006.01); G11B 5/735 (2006.01); G11B 5/78 (2006.01);
U.S. Cl.
CPC ...
G11B 5/70678 (2013.01); G11B 5/5928 (2013.01); G11B 5/714 (2013.01); G11B 5/7356 (2019.05); G11B 5/78 (2013.01);
Abstract
The magnetic tape includes a non-magnetic support, and a magnetic layer containing a ferromagnetic powder. A magnetic tape cartridge and a magnetic tape apparatus include the magnetic tape. A dale void volume Vvv specified in ISO 25178 on a surface of the magnetic layer is 0.100 nmor more and 0.350 nmor less, and standard deviation a of the Vvv in a width direction of the surface of the magnetic layer is 0.020 nmor less.