Recordable optical data storage disc
    1.
    发明申请
    Recordable optical data storage disc 审中-公开
    可记录光学数据存储盘

    公开(公告)号:US20080229349A1

    公开(公告)日:2008-09-18

    申请号:US11725131

    申请日:2007-03-15

    IPC分类号: G11B7/24

    CPC分类号: G11B7/266 G11B7/24079

    摘要: A recordable data storage disc comprises a substrate having a spirally or concentrically shaped groove pattern. A groove depth of the groove pattern is greater than 90 nanometers, and a track pitch provided by the groove pattern is less than 500 nanometers. The data storage disc further comprises a write-once recording layer formed on the groove pattern, and a reflector layer formed on the recording layer opposite the substrate. The groove depth of greater than 90 nanometers allows a thicker coating of dye to be used for the recording layer compared to other recordable data storage discs with a groove pattern with a groove depth of 90 nanometers or less. The thicker coating of dye allows a lower write power, better modulation when reading a data signal from the disc. The groove depth of greater than 90 nanometers may also allow for more precise push-pull tracking.

    摘要翻译: 可记录数据存储盘包括具有螺旋或同心形状的凹槽图案的基板。 凹槽图案的凹槽深度大于90纳米,并且由凹槽图案提供的轨道间距小于500纳米。 数据存储盘还包括形成在凹槽图案上的一次写入记录层和形成在与衬底相对的记录层上的反射层。 与具有槽深度为90纳米或更小的凹槽图案的其他可记录数据存储盘相比,槽深度大于90纳米允许用于记录层的较厚涂层涂层。 较厚的染料涂层允许较低的写入功率,当从盘读取数据信号时更好的调制。 凹槽深度大于90纳米也可以允许更精确的推挽跟踪。