PRODUCTION PROCESS OF BATIO3-BASED POWDER

摘要

Optical storage system (20) including a disc drive and an optical media (28) having a low radial total indicated runout and method of manufacturing such media. The optical media includes a disc substrate (36) having a formatted surface (38) and a center hole (42). A disc alignment mechanism (40) is provided, wherein the concentric registration of the formatted surface is specified relative to the disc alignment mechanism. A hub (44) having a center hole (46) is positioned at the disc center hole, wherein the hub center hole is centered relative to the disc alignment mechanism. The disc drive includes a drive spindle (30) and a center pin (32) extending from the drive spindle for centering the drive spindle to the optical media.