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发明名称
Optical data storage medium
摘要
An optical data storage medium which has a recording layer and a reflective layer formed on a substrate with a pregroove, is characterized in that a track pitch of the pregroove is equal to or greater than 0.535 mum and less than 0.74 mum.
申请公布号
US2007002720(A1)
申请公布日期
2007.01.04
申请号
US20050208611
申请日期
2005.08.23
申请人
PRODISC TECHNOLOGY INC.
发明人
CHENG HUNG-CHIEH;HUANG ROD
分类号
G11B7/24
主分类号
G11B7/24
代理机构
代理人
主权项
地址
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