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Magnetic recording medium

  • US 20050260459A1
  • Filed: 05/19/2005
  • Published: 11/24/2005
  • Est. Priority Date: 05/19/2004
  • Status: Abandoned Application
First Claim
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1. A magnetic recording medium comprising:

  • a nonmagnetic support having a first surface and a second surface; and

    a magnetic layer containing ferromagnetic powder and a binder, so that the magnetic layer, the first surface and the second surface are in this order, wherein the nonmagnetic support contains polyester, a difference between largest ratio and smallest ratio among peak intensity ratios of gauche/trans on the first and second surfaces of the support in a machine direction and a transverse direction obtained by ATR-FT-IR method is 0.030 or less in an absolute value, and a shrinkage factor of the magnetic recording medium after preservation at 70°

    C. 5% RH for one week is 0.040% or less.

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