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Magnetic tape and magnetic tape device

  • US 9,779,772 B1
  • Filed: 03/21/2017
  • Issued: 10/03/2017
  • Est. Priority Date: 03/22/2016
  • Status: Active Grant
First Claim
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1. A magnetic tape,which comprises a magnetic layer comprising ferromagnetic powder and binder on a nonmagnetic support, whereina timing based servo pattern is present on the magnetic layer;

  • a centerline average surface roughness Ra that is measured on a surface of the magnetic layer is less than or equal to 1.8 nm; and

    a coefficient of friction that is measured on a base portion of the surface of the magnetic layer is less than or equal to 0.35.

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