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US 6,616,867 B2Granted
Multi-generation stampers
AssigneeImation Corp.
InventorDonald J. Kerfeld
Life of this patent
Estimating the term…
Abstract
In exemplary embodiments, the invention provides one or more processes for making stampers for stamping replica data storage disks. For instance, the invention may provide a process for making a family of stampers from one master. Moreover, the invention may provide a way to systematically adjust the depth of the grooves on a stamper in a particular family of stampers while maintaining groove widths that are substantially the same as those of the master.
Claims25
A method comprising:
- determining desired groove depths;
- creating a multi-generation family of stampers;
- determining a groove depth reduction for each generation of the family of stampers;
- determining a number of generations sufficient to define stamper groove depths substantially equivalent to the desired groove depths;
- and
- creating at least one stamper to define groove depths substantially equivalent to the desired groove depths.
3 more elements
A method comprising:
- creating at least one first generation stamper from a master;
- creating at least one second generation stamper from the first generation stamper;
- creating at least one third generation stamper from the second generation stamper;
- creating at least one fourth generation stamper from the third generation stamper;
- creating at least one fifth generation stamper from the fourth generation stamper;
- and
- creating at least one sixth generation stamper from the fifth generation stamper.
4 more elements
A method comprising:
- creating a family of stampers from a master disk, the family including a plurality of different generation stampers;
- analyzing at least some of the different generation stampers;
- and
- determining a preferred generation stamper based on groove depths.
1 more element
Dependencies are inferred from the claim text.