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US07061702B2 Master disk device for transferring magnetic patterns to both sides of a magnetic recording medium, and alignment device therefor and alignment method thereof 失效
用于将磁图案转印到磁记录介质的两侧的主磁盘装置及其对准装置及其对准方法

Master disk device for transferring magnetic patterns to both sides of a magnetic recording medium, and alignment device therefor and alignment method thereof
Abstract:
To enable alignment of a magnetic pattern of a pair of master disks and a magnetic recording medium, each of the master disks has at least a pair of alignment marks disposed outside the region of the magnetic pattern. The master disks can be optically transparent or semi-transparent. The master disks can be aligned while the alignment marks are externally observed.
Abstract(Chinese):

为了能够对准一对母盘和磁记录介质的磁性图案，每个主盘具有至少一对设置在磁图案的区域外的对准标记。 主盘可以是光学透明的或半透明的。 可以对准主盘，同时外部观察对准标记。

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