Magnetic tape
AssigneeHitachi Maxell, Ltd.
InventorsHisanobu Mikamo, Seigi Kawarai, Sadamu Kuse
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Abstract
A magnetic tape comprising a non-magnetic substrate and at least one magnetic layer formed on one surface of the non-magnetic substrate, characterized in that magnetic particles contained in an uppermost magnetic layer of the magnetic layer are substantially granular particles with a particle size of 30 nm or less, and that the ratio of a coercive force HcM in the machine direction to a coercive force HcT in the transverse direction, i.e., [HcM/HcT], is at least 2.2. This magnetic tape has a capacity capable of corresponding to mass storage of 1 TB or more, and achieves a high ratio of reproducing output to noises (C/N), particularly for signals within a short wavelength range, thus showing excellent high-density recording performance.
Claims4
A magnetic tape comprising a non-magnetic substrate and at least one magnetic layer formed on one surface of the non-magnetic substrate, wherein magnetic particles contained in an uppermost magnetic layer of said magnetic layer are substantially granular particles with a particle size of 30 nm or less, and the ratio of a coercive force HcM in the machine direction to a coercive force HcT in the transverse direction, [HcM/HcT], is at least 2.2.
Dependencies are inferred from the claim text.