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1. 发明授权

US5654058A Magneto-optical disk 失效
标题翻译：磁光盘
公开(公告)号：US5654058A
公开(公告)日：1997-08-05
申请号：US310006
申请日：1994-09-21
申请人： Fumiyoshi Kirino , Harukazu Miyamoto , Shigenori Okamine , Noriyuki Ogihara , Masahiko Takahashi , Norio Ohta , Toshio Niihara
发明人： Fumiyoshi Kirino , Harukazu Miyamoto , Shigenori Okamine , Noriyuki Ogihara , Masahiko Takahashi , Norio Ohta , Toshio Niihara
IPC分类号： G11B11/105 , G11B5/66
CPC分类号： G11B11/1053 , G11B11/10586 , G11B11/10589 , G11B11/10591 , G11B11/10593 , G11B11/10508 , G11B11/10519 , Y10S428/90
摘要： In a magneto-optical disk for recording, reproduction or erasing with a laser beam, which comprises a film of four-layer structure consisting of a first dielectric layer, a magneto-optical recording layer, a second dielectric layer and a metallic layer, laid on a disk substrate provided with guide tracks, temperature distribution of the magneto-optical recording layer is controlled by controlling the thermal diffusivity of the metallic layer, and recording/reproduction/erasing repetition characteristics are improved thereby. In the disk of the present structure, the temperature is elevated in a broader area from the center of laser beam, and thus a thoroughly broad erasing domain width taking a track offset into account can be obtained and no recording domains remain after the erasing. The reproduced signal output is increased by 4 dB, as compared with that obtained by a disk of three-layer structure without any metallic layer, because the beam utilization efficiency is increased owing to both Kerr effect and Faraday effect. When the disk of the present structure is subjected to field modulation recording, tails of arrow-feather-shaped recording domains peculiar to the field modulation recording can be shortened and interbit interferences can be overcome, resulting in an increase in C/N (S/N) ratio and the high density recording can be made.
摘要翻译：在用于用激光束记录，再现或擦除的磁光盘中，其包括由第一介电层，磁光记录层，第二电介质层和金属层组成的四层结构的膜，铺设在设置有导轨的盘基板上，通过控制金属层的热扩散率来控制磁光记录层的温度分布，从而提高记录/再现/擦除重复特性。在本结构的盘中，从激光束的中心向较高的区域升温，从而可以获得考虑到磁道偏移的完全宽的擦除域宽度，并且在擦除之后不会留下记录域。与没有任何金属层的三层结构的盘相比，再现信号输出增加了4dB，因为由于克尔效应和法拉第效应都增加了光束利用效率。当本结构的磁盘进行现场调制记录时，可以缩短磁场调制记录特有的箭头 - 羽状记录区的尾部，并克服间断干扰，导致C / N（S / N）比，并且可以进行高密度记录。

2. 发明授权

US5639563A Magneto-optical recording medium 失效
标题翻译：磁光记录介质
公开(公告)号：US5639563A
公开(公告)日：1997-06-17
申请号：US247119
申请日：1994-05-20
申请人： Satoru Ohnuki , Katsusuke Shimazaki , Norio Ohta , Hideo Fujiwara , Masafumi Yoshihiro , Noriyuki Ogihara , Yukinori Yamada
发明人： Satoru Ohnuki , Katsusuke Shimazaki , Norio Ohta , Hideo Fujiwara , Masafumi Yoshihiro , Noriyuki Ogihara , Yukinori Yamada
IPC分类号： G11B7/26 , G11B11/105 , H01F1/00 , G11B5/66 , G11B5/70
CPC分类号： G11B11/10593 , G11B11/10582 , G11B11/10584 , G11B11/10586 , G11B11/10589 , G11B11/10591 , G11B7/26 , Y10S428/90 , Y10T428/12465 , Y10T428/265
摘要： A magneto-optical recording medium having a thin film with a suitable thermal conductivity, laminated on magneto-optical film, having excellent durability to repeated recording, reproducing and erasing comprising one layer or a multi-layer of thin film containing at least a magneto-optical recording film carried on a transparent substrate, a ferromagnetic reflection film having a reflectance to a reproduction beam of 70% or higher and a thermal conductivity at a normal temperature from 0.05 to 2.0 W/cm.deg laminated on the backside of the magneto-optical recording film viewed from the transparent substrate side and, optionally, a heat control layer having a thermal conductivity at a normal temperature of 0.1 to 2.0 W/cm.deg may be laminated on the backside of the magneto-optical film.
摘要翻译：一种磁光记录介质，其具有层叠在磁光膜上的具有合适导热性的薄膜，对重复记录，再现和擦除具有优异的耐久性，其包括至少含有磁致伸缩层的一层或多层薄膜，携带在透明基板上的光学记录膜，具有70％以上的再现光束的反射率的铁磁性反射膜，以及层叠在磁光记录介质的背面的常规温度为0.05〜2.0W / cm·s的导热率，从透明基板侧观察的光记录膜和可选地，在常温为0.1〜2.0W / cm·d的热导率的热控层可以层叠在磁光膜的背面。

3. 发明授权

US5598399A Magneto-optical recording medium having multiple magnetic layers for magneto-optical recording medium 失效
标题翻译：具有用于磁光记录介质的多个磁性层的磁光记录介质
公开(公告)号：US5598399A
公开(公告)日：1997-01-28
申请号：US518889
申请日：1995-08-24
申请人： Noriyuki Ogihara , Yoshinori Shirai , Takehiko Yorozu
发明人： Noriyuki Ogihara , Yoshinori Shirai , Takehiko Yorozu
IPC分类号： G11B11/10 , G11B11/105 , G11B7/24 , G11B11/00
CPC分类号： G11B11/10508 , G11B11/10591
摘要： A magneto-optic recording medium comprises on a substrate the first dielectric substance layer, a magneto-optic recording layer, the second dielectric substance layer and a reflective layer. The magneto-optic recording layer has, in the range of the Curie temperature Tc to (Tc-50) .degree.C., a value of a product of a saturated magnetization Ms and a coercive force Hc of not more than 4.times.10.sup.4 erg/cm.sup.3. The magneto-optic recording medium can be recorded at a magnetic field as low as 100 (Oe) with an excellent C/N.
摘要翻译：磁光记录介质在衬底上包括第一电介质层，磁光记录层，第二电介质层和反射层。磁光记录层在居里温度Tc至（Tc-50）℃的范围内具有饱和磁化强度Ms和矫顽力Hc的乘积的值不大于4×10 4 erg / cm 3。磁光记录介质可以以低至100（Oe）的磁场记录，具有优异的C / N。

4. 发明授权

US5965286A Magneto-optical recording medium 失效
标题翻译：磁光记录介质
公开(公告)号：US5965286A
公开(公告)日：1999-10-12
申请号：US794349
申请日：1997-02-03
申请人： Satoru Ohnuki , Katsusuke Shimazaki , Norio Ohta , Hideo Fujiwara , Masafumi Yoshihiro , Noriyuki Ogihara , Yukinori Yamada
发明人： Satoru Ohnuki , Katsusuke Shimazaki , Norio Ohta , Hideo Fujiwara , Masafumi Yoshihiro , Noriyuki Ogihara , Yukinori Yamada
IPC分类号： G11B7/26 , G11B11/105 , G11B5/66
CPC分类号： G11B11/10593 , G11B11/10582 , G11B11/10584 , G11B11/10586 , G11B11/10589 , G11B11/10591 , G11B7/26 , Y10S428/90 , Y10T428/12465 , Y10T428/265
摘要： A magneto-optical recording medium having a thin film, with suitable thermal conductivity, laminated on a magneto-optical film having excellent durability to repeated recording, reproducing and erasing comprising one layer or a multi-layer of thin film containing at least a magneto-optical recording film and carried on a transparent substrate, a ferromagnetic reflection film having a reflectance to a reproduction beam of 70% or higher and a thermal conductivity at a normal temperature from 0.05 to 2.0 W/cm.deg laminated on the backside of the magneto-optical recording film viewed from the transparent substrate side and, optionally, a heat control layer having a thermal conductivity at a normal temperature of 0.1 to 2.0 W/cm.deg laminated on the backside of the magneto-optical film.
摘要翻译：一种具有合适导热性的薄膜的磁光记录介质层叠在具有优异耐久性的重复记录，再现和擦除的磁光膜上，包括一层或多层薄膜，该薄膜至少含有磁 - 光学记录膜并承载在透明基板上，具有反射率为70％或更高的再现光束的铁磁反射膜以及层压在磁体背面上的常规温度为0.05至2.0W / cm的热导率 - 从透明基板侧观察的光学记录膜，以及可选地在层叠在磁光膜的背面上的在常温下为0.1〜2.0W / cm·s的导热率的热控制层。

5. 发明授权

US5712833A Durable magneto-optical disk having a rare earth-transition amorphous magneto-optical layer 失效
标题翻译：具有稀土跃迁非晶磁光层的耐用磁光盘
公开(公告)号：US5712833A
公开(公告)日：1998-01-27
申请号：US829618
申请日：1997-03-31
申请人： Noriyuki Ogihara , Yukinobu Yamazaki
发明人： Noriyuki Ogihara , Yukinobu Yamazaki
IPC分类号： G11B11/105 , G11B11/00
CPC分类号： G11B11/10584 , G11B11/10586
摘要： A magneto-optical disk having improved durability and unchanging properties including a substrate, a first dielectric layer, a magneto-optical recording layer, a second dielectric layer and a reflective layer, the second dielectric layer having a heat conductivity greater than that of the first dielectric layer, the magneto-optical layer being made of a ferrimagnetic material of a rare earth-transition amorphous.
摘要翻译：一种具有改善的耐久性和不变特性的磁光盘，包括基底，第一介电层，磁光记录层，第二介电层和反射层，第二介电层的导热率大于第一介电层电介质层，磁光层由稀土 - 非晶态的非铁磁材料制成。

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