MAGNETIC TAPE AND MAGNETIC TAPE DEVICE
First Claim
1. A magnetic tape,which comprises a magnetic layer comprising ferromagnetic powder and binder on a nonmagnetic support, whereina coercive force measured in a longitudinal direction of the magnetic tape is less than or equal to 1.67 kA/m;
- a timing-based servo pattern is present on the magnetic layer; and
an edge shape specified by observing the timing-based servo pattern with a magnetic force microscope is a shape in which a difference between a value of 99.9% cumulative distribution function of a width of misalignment from an ideal shape in the longitudinal direction of the magnetic tape and a value L0.1 of 0.1% cumulative distribution function, L99.9−
L0.1, is less than or equal to 180 nm.
1 Assignment
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Accused Products
Abstract
The magnetic tape has a magnetic layer containing ferromagnetic powder and binder on a nonmagnetic support, wherein the coercive force measured in the longitudinal direction of the magnetic tape is less than or equal to 167 kA/m, a timing-based servo pattern is present on the magnetic layer, and the edge shape specified by observing the timing-based servo pattern with a magnetic force microscope is a shape in which the difference between the value of the 99.9% cumulative distribution function of the width of misalignment from the ideal shape in the longitudinal direction of the magnetic tape and the value L0.1 of the 0.1% cumulative distribution function, L99.9-L0.1, is less than or equal to 180 nm.
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Citations
20 Claims
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1. A magnetic tape,
which comprises a magnetic layer comprising ferromagnetic powder and binder on a nonmagnetic support, wherein a coercive force measured in a longitudinal direction of the magnetic tape is less than or equal to 1.67 kA/m; -
a timing-based servo pattern is present on the magnetic layer; and an edge shape specified by observing the timing-based servo pattern with a magnetic force microscope is a shape in which a difference between a value of 99.9% cumulative distribution function of a width of misalignment from an ideal shape in the longitudinal direction of the magnetic tape and a value L0.1 of 0.1% cumulative distribution function, L99.9−
L0.1, is less than or equal to 180 nm. - View Dependent Claims (2, 3, 4, 6, 7, 8, 9, 10, 12, 13, 16, 17, 18, 19)
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11. A magnetic tape device,
which comprises a magnetic tape, a magnetic head, and a servo head, and wherein the magnetic tape is a magnetic tape, which comprises a magnetic layer comprising ferromagnetic powder and binder on a nonmagnetic support, wherein a coercive force measured in a longitudinal direction of the magnetic tape is less than or equal to 167 kA/m; -
a timing-based servo pattern, is present on the magnetic layer; and an edge shape specified by observing the timing-based servo pattern with a magnetic force microscope is a shape in which a difference between a value L99.9 of 99.9% cumulative distribution function of a width of misalignment from an ideal shape in the longitudinal direction of the magnetic tape and a value L0.1 of 0.1% cumulative distribution function, L99.9−
L0.1, is less than or equal to 180 nm. - View Dependent Claims (14, 15, 20)
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Specification