Hitachi Maxell, Limited

Jyunichi Shimizu

Masakazu Tani

Akihiro Nakamura

Kousuke Amano

Shinji Arakawa

A magnetic tape which is run at a speed of 4 m/sec. or higher and has recording tracks with a width of 21 &#x3bc;m or less, and which includes a non-magnetic support, at least one magnetic 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 magnetic layer or the backcoat layer, the value of (&#x3b1;/W)&#xd7;(V/f) is 10 [s] or less, and/or the value of (&#x3b1;/W) is 0.1 or less, wherein V [mm/sec.] is a tape-running speed is; &#x3b1; [&#x3bc;m] is an amount of a weave with a cycle of f [mm] on one edge of the tape or the other edge thereof as the reference side for the running of the tape; and W [&#x3bc;m] is a width of the recording track. The magnetic tape can decrease PES and off-track and thus is excellent in servo tracking performance.

Magnetic tape and magnetic tape cartridge

A magnetic tape which is run at a speed of 4 m/sec. or higher and has recording tracks with a width of 21 &#x3bc;m or less, and which includes a non-magnetic support, at least one magnetic 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 magnetic layer or the backcoat layer, the value of (&#x3b1;/W) X (V/f) is 10 [s] or less, and/or the value of (&#x3b1;/W) is 0.1 or less, wherein V [mm/sec.] is the tape-running speed; &#x3b1; [&#x3bc;m] is an amount of a weave with a cycle of f [mm] on one edge of the tape or the other edge thereof, as the reference side, for the running of the tape; and W [&#x3bc;m] is a width of the recording track. The magnetic tape can decrease PES and off-track and thus is excellent in servo tracking performance.

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Takatsuki, Japan

Jyunichi Shimizu