Reverse optical mastering for data storage disk stamper

  • US 7,600,992 B2
  • Filed: 03/02/2004
  • Issued: 10/13/2009
  • Est. Priority Date: 04/06/1998
  • Status: Active Grant
First Claim
Patent Images

1. A stamper for use in creating replica disk substrates comprising:

  • a stamper surface defining a data layer; and

    a stamper pattern formed in the data layer defined by adjacent stamper lands and stamper grooves, wherein the stamper grooves extend down into the stamper surface, wherein the stamper grooves define stamper groove bottoms and the stamper lands define stamper land tops, wherein the stamper groove bottoms are wider than the stamper land tops and a stamper track pitch is less than 425 nanometers.

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