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:
Mar. 04, 2025
Filed:
Mar. 17, 2022
Applicant:
Sony Group Corporation, Tokyo, JP;
Inventor:
Sogo Oikawa, Tokyo, JP;
Assignee:
Sony Group Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 5/78 (2006.01); G11B 5/008 (2006.01); G11B 5/706 (2006.01); G11B 23/107 (2006.01);
U.S. Cl.
CPC ...
G11B 5/78 (2013.01); G11B 5/00813 (2013.01); G11B 5/70642 (2013.01); G11B 5/70678 (2013.01); G11B 23/107 (2013.01); G11B 2220/655 (2013.01);
Abstract
The present technology provides a magnetic recording medium of a tape form, including: a magnetic layer; and an underlayer, in which a core part level difference Rk is 5.5 nm or less in a bearing curve generated on the basis of height data of a magnetic layer-side surface acquired using an atomic force microscope, and an average thickness of the underlayer is 1.50 μm or less. In addition, the present technology also provides a tape cartridge including the magnetic recording medium of the tape form.