US Patent Issued to FUJIFILM on May 20 for "Magnetic tape having characterized magnetic layer surface, magnetic tape cartridge, and magnetic tape device" (Japanese Inventor)

ALEXANDRIA, Va., June 16 -- United States Patent no. 12,308,054, issued on May 20, was assigned to FUJIFILM Corp. (Tokyo).

"Magnetic tape having characterized magnetic layer surface, magnetic tape cartridge, and magnetic tape device" was invented by Norihito Kasada (Minamiashigara, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A magnetic tape in which an arithmetic average roughness Ra measured at a surface of the magnetic layer with an atomic force microscope is 2.0 nm or less, and in an environment with a temperature of 23deg C. and a relative humidity of 50%, an AlFeSil abrasion value45deg of a surface of the magnetic layer measured at a tilt angle of 45deg of an AlFeSil prism is 20 micro metre to ...