公开(公告)号：US11367462B1

公开(公告)日：2022-06-21

申请号：US16259750

申请日：2019-01-28

Applicant: Seagate Technology LLC

Inventor： Thomas Larson Greenberg ,  Robin Andrew Davies ,  Clay Harrison Heberly ,  Joachim Ahner

IPC: G11B5/82 ,  G11B23/00 ,  G11B5/73 ,  B23K26/364 ,  B23K26/00 ,  B23K26/362 ,  B23K26/402 ,  B23K26/035 ,  G11B5/84 ,  B23K26/08 ,  B23K26/38 ,  B23K103/00

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.