Magnetic tape device and head tracking servo method
AssigneeFUJIFILM Corporation
InventorsTetsuya Kaneko, Norihito Kasada, Eiki Ozawa
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Abstract
The magnetic tape device including: a magnetic tape; and a servo head, in which 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 powder and a binding agent on the non-magnetic support, the magnetic layer includes a servo pattern, and logarithmic decrement acquired by a pendulum viscoelasticity test performed regarding a surface of the magnetic layer is equal to or smaller than 0.050.
Claims12
A magnetic tape device comprising:
- a magnetic tape;
- and
- a servo head,
- wherein 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 powder and a binding agent on the non-magnetic support,
- the magnetic layer includes a servo pattern, and
- logarithmic decrement acquired by a pendulum viscoelasticity test performed regarding a surface of the magnetic layer is equal to or smaller than 0.050.
A head tracking servo method comprising:
- reading a servo pattern of a magnetic layer of a magnetic tape by a servo head in a magnetic tape device,
- wherein 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 powder and a binding agent on the non-magnetic support,
- the magnetic layer includes the servo pattern, and
- logarithmic decrement acquired by a pendulum viscoelasticity test performed regarding a surface of the magnetic layer is equal to or smaller than 0.050.
Dependencies are inferred from the claim text.