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US 2021/0020195 A1Published application
Magnetic tape, magnetic tape cartridge, and magnetic tape apparatus
AssigneeFUJIFILM Corporation
InventorNorihito KASADA
Life of this patent
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Abstract
The magnetic tape includes a non-magnetic support; and a magnetic layer including ferromagnetic powder and a binding agent on the non-magnetic support, in which the magnetic layer has a servo pattern, and an absolute value ΔN of a difference between a refractive index Nxy measured regarding an in-plane direction of the magnetic layer and a refractive index Nz measured regarding a thickness direction of the magnetic layer is 0.25 to 0.40, a magnetic tape cartridge and a magnetic tape apparatus including this magnetic tape.
Claims20
A magnetic tape comprising:
- a non-magnetic support;
- and
- a magnetic layer including ferromagnetic powder and a binding agent on the non-magnetic support,
- wherein the magnetic layer has a servo pattern,
- the absolute value ΔN of the difference between the refractive index Nxy measured regarding an in-plane direction of the magnetic layer and the refractive index Nz measured regarding a thickness direction of the magnetic layer is 0.25 to 0.40, and
- the vertical squareness ratio of the magnetic tape is 0.60 to 1.00.
3 more elements
A magnetic tape cartridge,
- which comprises a magnetic tape comprising:
- a non-magnetic support;
- and
- a magnetic layer including ferromagnetic powder and a binding agent on the non-magnetic support,
- wherein the magnetic layer has a servo pattern,
- the absolute value ΔN of the difference between the refractive index Nxy measured regarding an in-plane direction of the magnetic layer and the refractive index Nz measured regarding a thickness direction of the magnetic layer is 0.25 to 0.40, and
- the vertical squareness ratio of the magnetic tape is 0.60 to 1.00.
4 more elements
A magnetic tape apparatus comprising:
- a magnetic head;
- and
- a magnetic tape comprising:
- a non-magnetic support;
- and
- a magnetic layer including ferromagnetic powder and a binding agent on the non-magnetic support,
- wherein the magnetic layer has a servo pattern,
- the absolute value ΔN of the difference between the refractive index Nxy measured regarding an in-plane direction of the magnetic layer and the refractive index Nz measured regarding a thickness direction of the magnetic layer is 0.25 to 0.40, and
- the vertical squareness ratio of the magnetic tape is 0.60 to 1.00.
6 more elements
Dependencies are inferred from the claim text.