| US 7,600,992 B2 | ||
| Reverse optical mastering for data storage disk stamper | ||
| Jathan D. Edwards, Afton, Minn. (US); and Donald J. Kerfeld, St. Paul, Minn. (US) | ||
| Assigned to Imation Corp., Oakdale, Minn. (US) | ||
| Filed on Mar. 02, 2004, as Appl. No. 10/790,965. | ||
| Application 09/850252 is a division of application No. 09/730246, filed on Dec. 05, 2000, granted, now 6,890,704. | ||
| Application 10/790965 is a continuation of application No. 09/850252, filed on May 07, 2001, granted, now 6,728,196. | ||
| Application 09/730246 is a continuation in part of application No. 09/055825, filed on Apr. 06, 1998, abandoned. | ||
| Prior Publication US 2004/0231531 A1, Nov. 25, 2004 | ||
| Int. Cl. B28B 3/30 (2006.01); G11B 7/24 (2006.01) | ||
| U.S. Cl. 425—385 [425/810; 425/470; 425/403; 101/28; 428/64.4; 216/44] | 16 Claims |
| 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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