Magnetic tape device and head tracking servo method
First Claim
1. A magnetic tape device comprising:
- a magnetic tape; and
a servo head,wherein a magnetic tape transportation speed of the magnetic tape device is equal to or lower than 18 m/sec,the servo head is a magnetic head including a tunnel magnetoresistance effect type element as a servo pattern reading element,the magnetic tape includes a non-magnetic support, and a magnetic layer including ferromagnetic hexagonal ferrite powder, non-magnetic powder, and a binding agent on the non-magnetic support,the magnetic layer includes a servo pattern, anda tilt cos θ
of the ferromagnetic hexagonal ferrite powder with respect to a surface of the magnetic layer acquired by cross section observation performed by using a scanning transmission electron microscope is 0.85 to 0.95.
1 Assignment
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Accused Products
Abstract
The magnetic tape device includes: a magnetic tape; and a servo head, in which a magnetic tape transportation speed of the magnetic tape device is equal to or lower than 18 m/sec, the servo head is a magnetic head including a tunnel magnetoresistance effect type element as a servo pattern reading element, the magnetic tape includes a non-magnetic support, and a magnetic layer including ferromagnetic hexagonal ferrite powder, non-magnetic powder, and a binding agent on the non-magnetic support, the magnetic layer includes a servo pattern, and a tilt cos θ of the ferromagnetic hexagonal ferrite powder with respect to a surface of the magnetic layer acquired by cross section observation performed by using a scanning transmission electron microscope is 0.85 to 0.95.
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Citations
12 Claims
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1. A magnetic tape device comprising:
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a magnetic tape; and a servo head, wherein a magnetic tape transportation speed of the magnetic tape device is equal to or lower than 18 m/sec, the servo head is a magnetic head including a tunnel magnetoresistance effect type element as a servo pattern reading element, the magnetic tape includes a non-magnetic support, and a magnetic layer including ferromagnetic hexagonal ferrite powder, non-magnetic powder, and a binding agent on the non-magnetic support, the magnetic layer includes a servo pattern, and a tilt cos θ
of the ferromagnetic hexagonal ferrite powder with respect to a surface of the magnetic layer acquired by cross section observation performed by using a scanning transmission electron microscope is 0.85 to 0.95. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A head tracking servo method comprising:
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reading a servo pattern of a magnetic layer of a magnetic tape by a servo head in a magnetic tape device, wherein a magnetic tape transportation speed of the magnetic tape device is equal to or lower than 18 m/sec, the servo head is a magnetic head including a tunnel magnetoresistance effect type element as a servo pattern reading element, the magnetic tape includes a non-magnetic support, and a magnetic layer including ferromagnetic hexagonal ferrite powder, non-magnetic powder, and a binding agent on the non-magnetic support, the magnetic layer includes the servo pattern, and a tilt cos θ
of the ferromagnetic hexagonal ferrite powder with respect to a surface of the magnetic layer acquired by cross section observation performed by using a scanning transmission electron microscope is 0.85 to 0.95. - View Dependent Claims (8, 9, 10, 11, 12)
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Specification