Reverse optical mastering for data storage disk replicas

  • US 7,952,986 B2
  • Filed: 08/06/2010
  • Issued: 05/31/2011
  • Est. Priority Date: 04/06/1998
  • Status: Expired due to Term
First Claim
Patent Images

1. A replica disk comprising:

  • a replica substrate including a first major surface and a second major surface, the first major surface including a surface pattern defined by lands and grooves,wherein the surface pattern defines a track pitch that is less than 425 nanometers,wherein tops of the lands define widths between 100 nanometers and 200 nanometers, andwherein the grooves define depths less than 120 nanometers.

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