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公开(公告)号：US5637411A
公开(公告)日：1997-06-10
申请号：US227673
申请日：1994-04-14
申请人： Katsusuke Shimazaki , Satoru Ohnuki , Masatoshi Hashimoto , Yoshinori Shirai , Norio Ohta , Hideo Fujiwara , Masafumi Yoshihiro , Yukinori Yamada , Eiji Koyama , Hitoshi Furusho
发明人： Katsusuke Shimazaki , Satoru Ohnuki , Masatoshi Hashimoto , Yoshinori Shirai , Norio Ohta , Hideo Fujiwara , Masafumi Yoshihiro , Yukinori Yamada , Eiji Koyama , Hitoshi Furusho
IPC分类号： G11B7/26 , G11B11/105 , G11B5/66
CPC分类号： G11B11/10591 , G11B11/10584 , G11B11/10586 , G11B11/10589 , G11B7/26 , Y10S428/90 , Y10T428/12771 , Y10T428/12931
摘要： Disclosed is a magneto-optical recording medium which comprises a transparent substrate and, provided on the substrate, a magneto-optical recording film comprising a perpendicular magnetic film based on rare earth metal-transition metal and an auxiliary magnetic film having spontaneous magnetization which exerts, between itself and the magneto-optical recording film, an exchange coupling force and wherein the auxiliary magnetic film is a magnetic film which readily rotates its magnetization direction toward the external magnetic field in the neighborhood of the Curie temperature of the magneto-optical recording film and has a squareness ratio of not more than 1 in the neighborhood of the Curie temperature. Also disclosed is a process for producing the magneto-optical recording medium.
摘要翻译： 公开了一种磁光记录介质，其包括透明基板，并且在基板上设置包括基于稀土金属 - 过渡金属的垂直磁性膜和具有自发磁化的辅助磁膜的磁光记录膜， 介于其自身与磁光记录膜之间的交换耦合力，并且其中辅助磁膜是在磁光记录膜的居里温度附近容易地将其磁化方向旋转到外部磁场的磁性膜， 在居里温度附近具有不大于1的矩形比。 还公开了一种用于制造磁光记录介质的方法。
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公开(公告)号：US06160769A
公开(公告)日：2000-12-12
申请号：US131226
申请日：1998-08-07
CPC分类号： G11B7/252 , B82Y10/00 , G11B7/122 , G11B7/24 , G11B7/2534 , G11B7/254 , G11B7/2585 , G11B11/10534 , G11B11/10554 , G11B11/1058 , G11B11/10584 , G11B2007/24306 , G11B2007/25417 , G11B2007/2571 , G11B2007/25713
摘要： A magneto-optical recording medium comprises a protective layer having a self-lubricating property formed at an uppermost layer on a side opposite to a substrate wherein a recording or reproducing light beam comes into a side of the protective layer. The thickness and the refractive index of the protective layer are selected under predetermined conditions depending on whether or not evanescent light is transmitted through the protective layer. It is possible to perform high density recording and reproduction thereof by utilizing the evanescent light. A protective layer having a self-lubricating property may be also formed on a bottom surface of an optical head opposing to the optical recording medium. Even when the optical head contacts with the surface of the optical recording medium, the sliding scratch scarcely occurs, because the optical head smoothly glides on the recording medium surface. It is possible to reduce the influence of multiple interference of light which would be otherwise caused in an air layer existing between the optical recording medium and the optical head, and it is possible to suppress variation in reproduced signal intensity.
摘要翻译： 磁光记录介质包括具有自润滑性的保护层，该保护层形成在与衬底相反的一侧的最上层，其中记录或再现光束进入保护层的一侧。 保护层的厚度和折射率根据是否通过保护层透过的预定条件进行选择。 可以通过利用ev逝光进行高密度记录和再现。 也可以在与光记录介质相对的光学头的底面上形成具有自润滑性的保护层。 即使当光学头与光学记录介质的表面接触时，由于光学头平滑地滑动在记录介质表面上，几乎不发生滑动刮痕。 可以减少在光记录介质和光头之间存在的空气层中会引起的光的多次干涉的影响，并且可以抑制再现信号强度的变化。
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13.发明授权Optical recording medium with solid protective layer having self-lubricating property 失效具有固体保护层的光学记录介质具有自润滑性公开(公告)号：US06366541B1
公开(公告)日：2002-04-02
申请号：US09685137
申请日：2000-10-11
IPC分类号： G11B1100
CPC分类号： G11B7/252 , B82Y10/00 , G11B7/122 , G11B7/24 , G11B7/2534 , G11B7/254 , G11B7/2585 , G11B11/10534 , G11B11/10554 , G11B11/1058 , G11B11/10584 , G11B2007/24306 , G11B2007/25417 , G11B2007/2571 , G11B2007/25713
摘要： A magneto-optical recording medium comprises a protective layer having a self-lubricating property formed at an uppermost layer on a side opposite to a substrate wherein a recording or reproducing light beam comes into a side of the protective layer. The thickness and the refractive index of the protective layer are selected under predetermined conditions depending on whether or not evanescent light is transmitted through the protective layer. It is possible to perform high density recording and reproduction thereof by utilizing the evanescent light. A protective layer having a self-lubricating property may be also formed on a bottom surface of an optical head opposing to the optical recording medium. Even when the optical head contacts with the surface of the optical recording medium, the sliding scratch scarcely occurs, because the optical head smoothly glides on the recording medium surface. It is possible to reduce the influence of multiple interference of light which would be otherwise caused in an air layer existing between the optical recording medium and the optical head, and it is possible to suppress variation in reproduced signal intensity.
摘要翻译： 磁光记录介质包括具有自润滑性的保护层，该保护层形成在与衬底相反的一侧的最上层，其中记录或再现光束进入保护层的一侧。 保护层的厚度和折射率根据是否通过保护层透过的预定条件进行选择。 可以通过利用ev逝光进行高密度记录和再现。 也可以在与光记录介质相对的光学头的底面上形成具有自润滑性的保护层。 即使当光学头与光学记录介质的表面接触时，由于光学头平滑地滑动在记录介质表面上，几乎不发生滑动刮痕。 可以减少在光记录介质和光头之间存在的空气层中会引起的光的多次干涉的影响，并且可以抑制再现信号强度的变化。
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