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MAGNETIC TAPE AND METHOD OF MANUFACTURING THE SAME

  • US 20170092315A1
  • Filed: 09/29/2016
  • Published: 03/30/2017
  • Est. Priority Date: 09/30/2015
  • 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,wherein a magnetic layer comprises a fatty acid ester;

  • a full width at half maximum of a spacing distribution as measured by optical interferometry on a magnetic layer side surface of the magnetic tape before vacuum heating the magnetic tape is greater than 0 nm but less than or equal to 5.0 nm;

    a full width at half maximum of a spacing distribution as measured by optical interferometry on a magnetic layer side surface of the magnetic tape after vacuum heating the magnetic tape is greater than 0 nm but less than or equal to 5.0 nm; and

    a difference between a spacing Safter as measured by optical interferometry on a magnetic layer side surface of the magnetic tape after vacuum heating the magnetic tape and a spacing Sbefore as measured by optical interferometry on a magnetic layer side surface of the magnetic tape before vacuum heating the magnetic tape, Safter

    Sbefore, is greater than 0 nm but less than or equal to 8.0 nm.

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