Magnetic tape, magnetic tape cartridge, and magnetic recording and reproducing apparatus
The magnetic tape includes: a non-magnetic support; and a magnetic layer including ferromagnetic powder, in which the ferromagnetic powder is ferromagnetic powder selected from the group consisting of hexagonal strontium ferrite powder and ε-iron oxide powder, and an amount of an edge weave of a tape edge on at least one side of the magnetic tape is 1.5 μm or less.
1. A magnetic tape comprising:
a non-magnetic support; and
a magnetic layer including ferromagnetic powder,
wherein the ferromagnetic powder is ferromagnetic powder selected from the group consisting of hexagonal strontium ferrite powder and ε-iron oxide powder,
an amount of an edge weave of a tape edge on at least one side of the magnetic tape is 1.5 μm or less, and
a difference S after −S before between a spacing S after measured on a surface of the magnetic layer by optical interferometry after methyl ethyl ketone cleaning and a spacing S before measured on the surface of the magnetic layer by optical interferometry before methyl ethyl ketone cleaning is more than 0 nm and 15.0 nm or less.
2. The magnetic tape according to claim 1 , wherein a cycle of the edge weave is in a range of 65.0 to 130.0 mm.
3. The magnetic tape according to claim 1 ,
wherein the amount of the edge weave is 0.8 μm or more and 1.5 μm or less.
4. The magnetic tape according to claim 1 , further comprising:
a non-magnetic layer including non-magnetic powder between the non-magnetic support and the magnetic layer.
5. The magnetic tape according to claim 1 , further comprising:
a back coating layer including non-magnetic powder on a surface side of the non-magnetic support opposite to a surface side provided with the magnetic layer.
6. A magnetic tape cartridge comprising:
the magnetic tape according to claim 1 .
7. The magnetic tape cartridge according to claim 6 ,
wherein a cycle of the edge weave is in a range of 65.0 to 130.0 mm.
8. The magnetic tape cartridge according to claim 6 ,
wherein the amount of the edge weave is 0.8 μm or more and 1.5 μm or less.
9. The magnetic tape cartridge according to claim 6 ,
wherein the magnetic tape further comprises a non-magnetic layer including non-magnetic powder between the non-magnetic support and the magnetic layer.
10. The magnetic tape cartridge according to claim 6 ,
wherein the magnetic tape further comprises a back coating layer including non-magnetic powder on a surface side of the non-magnetic support opposite to a surface side provided with the magnetic layer.
11. A magnetic recording and reproducing apparatus comprising:
the magnetic tape according to claim 1 ; and
a magnetic head.
12. The magnetic recording and reproducing apparatus according to claim 11 ,
wherein a cycle of the edge weave is in a range of 65.0 to 130.0 mm.
13. The magnetic recording and reproducing apparatus according to claim 11 ,
wherein the amount of the edge weave is 0.8 μm or more and 1.5 μm or less.
14. The magnetic recording and reproducing apparatus according to claim 11 ,
wherein the magnetic tape further comprises a non-magnetic layer including non-magnetic powder between the non-magnetic support and the magnetic layer.
15. The magnetic recording and reproducing apparatus according to claim 11 ,
wherein the magnetic tape further comprises a back coating layer including non-magnetic powder on a surface side of the non-magnetic support opposite to a surface side provided with the magnetic layer.