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:
Jul. 07, 2026
Filed:
Oct. 20, 2023
Sony Group Corporation, Tokyo, JP;
Minoru Yamaga, Tokyo, JP;
Yuuko Kamoshita, Tokyo, JP;
Sony Group Corporation, Tokyo, JP;
Abstract
To provide a magnetic recording medium with which excellent electromagnetic conversion characteristics can be obtained. A magnetic recording medium is a tape-type magnetic recording medium and includes a base body and a magnetic layer. An average thickness of the magnetic recording medium is 5.30 μm or less. When a power spectral density at each position of spatial wavelength λ=100/n [μm] (provided that n is an integer of 1 or more and 255 or less) is obtained using a 2D surface profile image of a measurement range of 100 [μm]×100 [μm], that has been acquired by measuring a surface on a side of the magnetic layer by an atomic force microscope, a ratio I/Ibetween an average value Iof integrated values of the power spectral density within a range of spatial wavelength λμm and an average value Iof integrated values of the power spectral density within a range of 10 μm≤spatial wavelength λ≤20 μm is 3.00 or less. An average value of a kurtosis on the surface on the side of the magnetic layer is 5.50 or less.