logo

For the Inventor, By the Inventor

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.:

US 11869559 B1

PDFFull Text
Date of Patent:
Jan. 09, 2024

Filed:

Jul. 26, 2022

Magnetic tape having controlled water contact angle ratio, magnetic tape cartridge, and magnetic tape apparatus

Applicant:

Fujifilm Corporation, Tokyo, JP;

Inventors:

Noriko Oyanagi, Minamiashigara, JP;

Wataru Kikuchi, Minamiashigara, JP;

Akio Tamura, Minamiashigara, JP;

Assignee:

FUJIFILM Corporation, Tokyo, JP;

Attorney:

Sughrue Mion, PLLC

Primary Examiner:

Kevin M Bernatz

Int. Cl.
CPC ...
G11B 5/78 (2006.01); G11B 5/714 (2006.01); G11B 5/706 (2006.01); G11B 5/725 (2006.01); G11B 5/702 (2006.01); G11B 5/71 (2006.01); G11B 5/733 (2006.01);
U.S. Cl.
CPC ...
G11B 5/78 (2013.01); G11B 5/7028 (2013.01); G11B 5/70678 (2013.01); G11B 5/71 (2013.01); G11B 5/714 (2013.01); G11B 5/7253 (2020.08); G11B 5/7334 (2019.05);
Abstract

The magnetic tape includes a non-magnetic support, and a magnetic layer including a ferromagnetic powder. A fluorine-containing compound is included in a portion on the non-magnetic support on a magnetic layer side, and a ratio θr of a water contact angle measured on a surface of the magnetic layer after sliding on a magnetic head to a water contact angle measured on the surface of the magnetic layer before sliding on the magnetic head is 0.70 or more.

Find Patent Forward Citations

Oyanagi, Noriko. (2024). Magnetic tape having controlled water contact angle ratio, magnetic tape cartridge, and magnetic tape apparatus (U.S. Patent No. 11869559). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/11869559

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Loading…