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MAGNETIC TAPE, MAGNETIC TAPE CARTRIDGE, MAGNETIC RECORDING AND REPRODUCING DEVICE, AND METHOD OF MANUFACTURING MAGNETIC TAPE

  • US 20170178676A1
  • Filed: 12/15/2016
  • Published: 06/22/2017
  • Est. Priority Date: 12/16/2015
  • Status: Active Grant
First Claim
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1. A magnetic tape,which comprises a nonmagnetic layer comprising nonmagnetic powder and binder on a nonmagnetic support, and a magnetic layer comprising ferromagnetic powder and binder on the nonmagnetic layer;

  • whereina combined thickness of the nonmagnetic layer and the magnetic layer is less than or equal to 0.60 μ

    m;

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

    at least the magnetic layer comprises one or more components selected from the group consisting of a fatty acid and a fatty acid amide; and

    a C—

    H derived carbon, C, concentration calculated from a C—

    H peak area ratio in a C1s spectrum obtained by X-ray photoelectron spectroscopy conducted at a photoelectron take-off angle of 10 degrees on a surface of the magnetic layer is greater than or equal to 45 atom %.

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