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. 11, 2022
Filed:
Aug. 29, 2019
Sony Corporation, Tokyo, JP;
Hiroto Atagi, Tokyo, JP;
Noboru Sekiguchi, Tokyo, JP;
Takashi Aizawa, Tokyo, JP;
Tomoe Ozaki, Tokyo, JP;
Koji Suzuki, Tokyo, JP;
Yoichi Kanemaki, Tokyo, JP;
Teruo Sai, Tokyo, JP;
Ryoichi Hiratsuka, Tokyo, JP;
Kazuya Hashimoto, Tokyo, JP;
Sony Corporation, Tokyo, JP;
Abstract
A tape-like magnetic recording medium includes a reinforced substrate, and a recording layer arranged on the reinforced substrate, and the reinforced substrate includes a substrate that has a first face and a second face opposed to each other, and has an average thickness of 4 μm or smaller, and a metal layer that contains cobalt, arranged on the first face, the reinforced substrate by itself causing thereon a depth of indentation of 0.25 μm or shallower, when a 0.7-mm-diameter hard sphere is impressed against the second face under 5.0 gf load for 10 seconds.