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Magnetic tape device and head tracking servo method

  • US 9,972,351 B1
  • Filed: 12/26/2017
  • Issued: 05/15/2018
  • Est. Priority Date: 12/27/2016
  • Status: Active Grant
First Claim
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1. 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, andlogarithmic decrement acquired by a pendulum viscoelasticity test performed regarding a surface of the magnetic layer is equal to or smaller than 0.050.

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