Magneto-optical recording medium
    91.
    发明授权
    Magneto-optical recording medium 失效
    磁光记录介质

    公开(公告)号:US5700567A

    公开(公告)日:1997-12-23

    申请号:US558419

    申请日:1995-11-16

    申请人: Hajime Utsunomiya

    发明人: Hajime Utsunomiya

    IPC分类号: G11B11/10 G11B11/105 G11B5/66

    摘要: In a magneto-optical recording medium comprising a first dielectric layer, a recording layer, a second dielectric layer, and a metal reflective layer stacked on a substrate, the second dielectric layer is formed of a mixture of a rare earth element oxide, silicon oxide, and silicon nitride. The medium has increased recording sensitivity and provides stable recording/reproducing performance with low error rate and high resolution.

    摘要翻译: 在包括堆叠在基板上的第一介电层,记录层,第二介电层和金属反射层的磁光记录介质中,第二介电层由稀土元素氧化物,氧化硅 和氮化硅。 该介质具有增加的记录灵敏度,并提供具有低错误率和高分辨率的稳定的记录/再现性能。

    Magneto-optical disk having lands and grooves for recording information
    93.
    发明授权
    Magneto-optical disk having lands and grooves for recording information 失效
    具有用于记录信息的平台和凹槽的磁光盘

    公开(公告)号:US5430706A

    公开(公告)日:1995-07-04

    申请号:US226961

    申请日:1994-04-12

    摘要: A magneto-optical disk is made up of a disk form of substrate including on its surface a recessed area having at least one of a groove and pits, and a recording layer provided such that it covers the recessed area. The geometry of at least one of the groove and pits is designed to conform to .theta..sub.10 .gtoreq..theta..sub.50 and .theta..sub.50 >.theta..sub.90 where .theta..sub.10, .theta..sub.50 and .theta..sub.90 are respectively the angles that tangential lines make with horizontal lines at 10%, 50% and 90% depth positions of a side wall of the recess in the diametrical direction of the substrate. This magneto-optical disk is improved in terms of the push-pull signal level, radial contrast, skew margin and C/N.

    摘要翻译: 磁光盘由基板的盘形式构成,在其表面上包括具有凹槽和凹坑中的至少一个的凹陷区域和设置成覆盖凹陷区域的记录层。 凹槽和凹坑中的至少一个的几何形状被设计为符合θ10,θ50和θ90,其中θ10,θ50和θ90分别是切线与水平线在 在基板的直径方向上的凹部的侧壁的10%,50%和90%的深度位置。 这种磁光盘在推挽信号电平,径向对比度,歪斜余量和C / N方面得到改善。