FujiFilm Assigned Patent

FujiFilm Corporation, Tokyo, Japan has been assigned a patent (10,008,230) developed by Ozawa, Eiki, Kaneko, Tetsuya, and Kasada, Norihito, Minami-ashigara, Japan, for a “magnetic tape device and head tracking servo method.“

The abstract of the patent published by the U.S. Patent and Trademark Office states: “The magnetic tape device includes: a magnetic tape, and a servo head, in which the servo head is a TMR head, the magnetic tape includes a non-magnetic support, and a magnetic layer including ferromagnetic powder, a binding agent, and fatty acid ester on the non-magnetic support, the magnetic layer includes a servo pattern, full widths at half maximum of spacing distribution measured by optical interferometry regarding a surface of the magnetic layer before and after performing a vacuum heating with respect to the magnetic tape are greater than 0 nm and equal to or smaller than 7.0 nm, and a difference between a spacing measured by optical interferometry regarding the surface of the magnetic layer after performing the vacuum heating with respect to the magnetic tape and a spacing measured before performing the vacuum heating is greater than 0 nm and equal to or smaller than 9.0 nm.”

The patent application was filed on December 26, 2017 (15/854,506).