Patent ID: 7602569

Claim:
A magnetic tape comprising a non-magnetic support, at least one recording layer formed on one surface of the non-magnetic support, and a backcoat layer formed on the other surface of the non-magnetic support, wherein servo signals for controlling tracking are recorded on the recording layer or the backcoat layer, and said magnetic tape has recording tracks with a width of 21 μm or less and an edge weave amount of 0.8 to 2.1 μm; and wherein a value of (α/W)×(V/f) is 10 (s −1 ) or less, wherein α (μm) is an amount of an edge weave with a cycle of f (mm) on a tape edge served as a reference side for running of the magnetic tape; V (mm/second) is a tape running speed; and W (μm) is a width of a recording track.