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:
Jan. 21, 2020
Filed:
Sep. 29, 2016
Fujifilm Corporation, Tokyo, JP;
Eiki Ozawa, Minami-ashigara, JP;
Norihito Kasada, Minami-ashigara, JP;
Masahito Oyanagi, Minami-ashigara, JP;
Toshio Tada, Minami-ashigara, JP;
FUJIFILM Corporation, Tokyo, JP;
Abstract
A magnetic tape has a magnetic layer containing ferromagnetic powder and binder on a nonmagnetic support. The magnetic layer contains a fatty acid ester. The full width at half maximum of the spacing distribution as measured by optical interferometry on the magnetic layer side surface of the magnetic tape before vacuum heating the magnetic tape is greater than 0 nm but less than or equal to 5.0 nm. The full width at half maximum of the spacing distribution after vacuum heating the magnetic tape is greater than 0 nm but less than or equal to 5.0 nm. The difference between the spacing Safter vacuum heating the magnetic tape and the spacing Sbefore vacuum heating the magnetic tape, S−S, is greater than 0 nm but less than or equal to 8.0 nm.