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公开(公告)号：US4074313A
公开(公告)日：1978-02-14
申请号：US701416
申请日：1976-06-30
摘要： A disc master, coated with an electron sensitive material, is secured to a turntable which is rotatably mounted within a vacuum chamber. A recorder column protrudes into the vacuum chamber for directing a signal representative electron beam toward the disc master. The recorder column is mounted on a carriage for translational motion along a path radially disposed with respect to the center of rotation of the turntable in correlation with the rotational motion of the turntable. A column set-up stage is mounted within the vacuum chamber, adjacent the outside perimeter of a turntable supported disc master, and in registration with the coated surface of the disc master. The recorder column is aligned with the set-up stage for determining beam characteristics, such as: beam current, shape, quality, etc., and for properly focusing the electron beam.
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公开(公告)号：US4349902A
公开(公告)日：1982-09-14
申请号：US201057
申请日：1980-10-27
CPC分类号： G11B3/46
摘要： A cutterhead assembly suitable for forming a topographic signal representative pattern in a recording media, such as a disc substrate, is constructed having a base member, a piezoelectric element and a cutting stylus. The piezoelectric element in this structure is asymmetrically assembled to the base member to reduce phase modulation of the recorded signal which would otherwise occur from the transverse motion of the stylus during the cutting operation.
摘要翻译： 适于在记录介质（例如盘基片）中形成地形信号代表性图案的刀架组件被构造成具有基底构件，压电元件和切割触针。 在该结构中的压电元件被非对称地组装到基底构件上，以减少否则在切割操作期间从触针的横向运动发生的记录信号的相位调制。
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