Method of laser cutting a hard disk drive substrate for an edge profile alignable to a registration support
AssigneeSeagate Technology LLC
InventorsThomas Larson Greenberg, Robin Andrew Davies, Clay Harrison Heberly, Joachim Ahner
Life of this patent
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Abstract
A non-metallic media substrate includes a disc-shaped substrate body having at least one media storage surface on a face thereof. The substrate body has a center opening having an inner diameter and an outer diameter surface, and the substrate body has a thickness. The substrate further includes an annular groove at the outer diameter of the media substrate, the annular groove having chamfered edges and an internal concavity extending toward the inner diameter.
Claims14
A method of manufacturing a hard disc drive substrate, comprising:
- laser cutting the hard disc drive substrate from a sheet of substrate material, the hard disc drive substrate having an inner circular opening with an inner diameter, an outer diameter, and at least one face having a media storage surface;
- forming an annular groove in a thickness of a surface at the outer diameter, the annular groove centered on a thickness of the hard disc drive substrate and having chamfered edges and an internal concavity extending toward the inner diameter;
- and registering of the annular groove with a registration support.
A method of manufacturing a hard disc drive substrate, comprising:
- laser cutting the hard disc drive substrate from a sheet of substrate material, the hard disc drive substrate having an inner circular opening with an inner diameter, an outer diameter, and at least one face having a media storage surface;
- forming an annular groove in a thickness of a surface at the outer diameter, the annular groove centered on a thickness of the hard disc drive;
- and
- aligning the annular groove with a registration support for processing.
Dependencies are inferred from the claim text.