Magnetic tape apparatus, magnetic tape, and magnetic tape cartridge
AssigneeFUJIFILM Corporation
InventorNorihito Kasada
Life of this patent
Estimating the term…
Abstract
Provided is a magnetic tape apparatus in which the magnetic tape is run between a winding reel and a cartridge reel in a state where a tension is applied in a longitudinal direction, a maximum value of the tension is 0.50 N or more, the magnetic tape after being run in a state where the tension is applied is wound around the cartridge reel with a tension of 0.30 N or less applied in the longitudinal direction, and the number of recesses existing on a surface of the magnetic layer of the magnetic tape and having an equivalent circle diameter of 0.10 μm or more and less than 0.20 μm is 100 or more and 2000 or less per an area of 40 μm×40 μm.
Claims19
A magnetic tape apparatus comprising:
- a winding reel;
- a magnetic tape;
- and
- a magnetic tape cartridge having a cartridge reel,
- wherein, in the magnetic tape apparatus,
- the magnetic tape is run between the winding reel and the cartridge reel in a state where a tension is applied in a longitudinal direction of the magnetic tape, and a maximum value of the tension is 0.50 N or more,
- the magnetic tape after being run in a state where the tension is applied is wound around the cartridge reel with a tension of 0.30 N or less applied in the longitudinal direction of the magnetic tape,
- the magnetic tape includes a non-magnetic support, and a magnetic layer containing a ferromagnetic powder, and
- a number of recesses existing on a surface of the magnetic layer and having an equivalent circle diameter of 0.10 μm or more and less than 0.20 μm, is 100 or more and 2000 or less per an area of 40 μm×40 μm.
A magnetic tape,
- which is used in a magnetic tape apparatus in which the magnetic tape is run between a winding reel and a cartridge reel of a magnetic tape cartridge in a state where a tension is applied in a longitudinal direction of the magnetic tape, a maximum value of the tension is 0.50 N or more, and the magnetic tape after being run in a state where the tension is applied is wound around the cartridge reel with a tension of 0.30 N or less applied in the longitudinal direction of the magnetic tape, the magnetic tape comprising:
- a non-magnetic support;
- and
- a magnetic layer containing a ferromagnetic powder,
- wherein the number of recesses existing on a surface of the magnetic layer and having an equivalent circle diameter of 0.10 μm or more and less than 0.20 μm, is 100 or more and 2000 or less per an area of 40 μm×40 μm.
Dependencies are inferred from the claim text.