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US 6,403,919 B1Granted
Disk marking system
AssigneeKomag, Inc.
InventorDavid V. Salamon
Life of this patent
Estimating the term…
Abstract
A marking system is provided for thin film magnetic disks in which the laser texturing stage in the manufacturing process for magnetic disks is used to form a single track marking zone. In this marking zone, information about the disk is serialized and stored in the form of long and short laser features, representing bits in a binary code. The length of the marking zone can be used to indicate additional information about the disk.
Claims23
A method for marking a magnetic recording medium, comprising:
- providing a substrate;
- texturing a surface of said substrate with a laser texturing tool so as to form texture features in a contact start-stop zone;
- and
- using said laser texturing tool to form information features on said surface of said substrate, said information features representing information about said magnetic recording medium.
1 more element
Dependencies are inferred from the claim text.