Magnetic recording medium and method of producing the same

  • US 6,316,062 B1
  • Filed: 03/17/2000
  • Issued: 11/13/2001
  • Est. Priority Date: 09/17/1997
  • Status: Expired due to Term
First Claim
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1. A method for manufacturing a magnetic recording medium comprising the steps of forming a carbon protective film onto a disc, the non-magnetic substrate of which is layered with a non-magnetic base film and magnetic film, using a reactant gas containing carbon atoms as a starting material, according to a plasma CVD method, wherein a mixed gas of hydrocarbon and hydrogen, in which the mixing ratio of hydrocarbon to hydrogen is in the range of 2 to 1˜

  • 1 to 100 by volume, is used as a reactant gas, while applying a bias to said disc.

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