US Patent 12131763 Magnetic recording medium
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US Patent 12131763 Magnetic recording medium
Article
Patent abstract
A magnetic recording medium is a tape-shaped magnetic recording medium, including: a substrate; an underlayer provided on the substrate; and a magnetic layer provided on the underlayer. The substrate contains polyester, each of the underlayer and the magnetic layer contains a lubricant, the magnetic layer has a surface on which a large number of holes is provided, the arithmetic average roughness Ra of the surface is 2.5 nm or less, a BET specific surface area of the entire magnetic recording medium measured in a state where the magnetic recording medium has been washed and dried is 3.5 m
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Patent Number
Patent Inventor Names
Minoru Yamaga0
Noboru Sekiguchi0
Date of Patent
October 29, 2024
0Patent Application Number
182009130
Date Filed
May 23, 2023
0Patent Citations
Patent Primary Examiner
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