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公开(公告)号：EP0139474A3
公开(公告)日：1986-06-04
申请号：EP84306341
申请日：1984-09-17
发明人： Takahashi, Akira , Murakami, Yoshiteru , Hirokane, Junji , Katayama, Hiroyuki , Ohta, Kenji , Yamaoka, Hideyoshi
IPC分类号： G11B11/10
CPC分类号： G11B11/10593 , H01F10/126 , H01F10/14 , Y10S428/90 , Y10T428/2495 , Y10T428/24975
摘要： A magneto-optic memory element inctades a transparent substrate, a first transparent nitride film, a GdTbFe recording layer, a second transparent nitride film, and a reflection film formed in this order. The first transparent nitride film has an index of refraction higher than that of the second transparent nitride film. In a preferred form, the first transparent nitride film is a SiN film having the index of refraction of about 2.0, and the second transparent nitride film is an AIN film having the index of refraction of about 1.8 to 1.9.
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公开(公告)号：EP0145344A1
公开(公告)日：1985-06-19
申请号：EP84307988.0
申请日：1984-11-19
CPC分类号： G11B7/26 , G11B7/24 , G11B23/0035
摘要： An disc (15) includes a glass substrate on which a plurality of concentric circular guide grooves (or a spiral groove) are formed for the tracking purpuses. A centering plate (13) is secured to the glass substrate (10) in a manner that the center of a circular opening formed in the centering plate is exactly adjusted to the center of the plurality of concentric circular guide grooves (spiral groove). The circular opening (13a) formed in the centering plate is utilized to drive the optical memory disc on a turntable (14). Since the circular opening is not formed directly in the glass substrate, the center adjustment is easily conducted, and there is no possibility that the glass substrate is damaged when the circular opening is formed.
摘要翻译： 盘（15）包括玻璃基板，其上形成有用于跟踪紫色的多个同心圆形导向槽（或螺旋槽）。 中心板（13）以形成在定心板中的圆形开口的中心精确地调整到多个同心圆形导向槽（螺旋槽）的中心的方式固定到玻璃基板（10）。 形成在定心板中的圆形开口（13a）用于驱动旋转台（14）上的光学存储盘。 由于圆形开口不直接形成在玻璃基板中，所以中央调节容易进行，并且当形成圆形开口时玻璃基板不可能被损坏。
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公开(公告)号：EP0139474A2
公开(公告)日：1985-05-02
申请号：EP84306341.3
申请日：1984-09-17
发明人： Takahashi, Akira , Murakami, Yoshiteru , Hirokane, Junji , Katayama, Hiroyuki , Ohta, Kenji , Yamaoka, Hideyoshi
IPC分类号： G11B11/10
CPC分类号： G11B11/10593 , H01F10/126 , H01F10/14 , Y10S428/90 , Y10T428/2495 , Y10T428/24975
摘要： A magneto-optic memory element inctades a transparent substrate, a first transparent nitride film, a GdTbFe recording layer, a second transparent nitride film, and a reflection film formed in this order. The first transparent nitride film has an index of refraction higher than that of the second transparent nitride film. In a preferred form, the first transparent nitride film is a SiN film having the index of refraction of about 2.0, and the second transparent nitride film is an AIN film having the index of refraction of about 1.8 to 1.9.
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公开(公告)号：EP0111988A1
公开(公告)日：1984-06-27
申请号：EP83302419.3
申请日：1983-04-28
CPC分类号： G11B11/10591 , C23C14/0617 , C23C14/0652 , G11B7/243 , G11B7/2531 , G11B7/2533 , G11B7/2534 , G11B7/257 , G11B7/258 , G11B7/2585 , G11B7/259 , G11B7/2595 , G11B11/10584 , G11B11/10586 , G11B2007/24306 , G11B2007/24308 , G11B2007/24314 , G11B2007/24316 , G11B2007/2432 , G11B2007/24328 , G11B2007/25706 , G11B2007/25708 , G11B2007/2571 , G11B2007/25713 , G11B2007/25718 , Y10S428/90 , Y10T428/26 , Y10T428/265
摘要： A magneto-optic memory device comprises a recording medium deposited by sputtering on a substrate as of glass, a transparent dielectric film formed on the recording medium, and a reflecting film deposited on the transparent dielectric film. This arrangement prevents the recording medium from being oxidized, and stabilizes coercive force characteristics and information recording characteristics of the recording medium.
摘要翻译： 光存储器件具有衬底，光学存储器记录层（I）和无O的介电层（II）。 （I）是pref。 TeOx（x = 0-1），TeC和TeSe之一; 或稀土过渡金属合金; 或MnBi和MnBiCu中的一种。 （二）是首选。 氮化铝或氮化硅。 县。 装置还包括不锈钢，Ni，Ti或TiN或Cu，Ag，Al或Au的（II）上的反射膜。 底物是pref。 玻璃聚碳酸酯，丙烯酸树脂或环氧树脂。 在激光光学记录和存储装置等中。（I）被保护免受氧化。 因此具有良好的矫顽力和记录性能稳定性。
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公开(公告)号：EP0078673A3
公开(公告)日：1984-03-28
申请号：EP82305749
申请日：1982-10-28
发明人： Deguchi, Toshihisa Daiyahaitsu Gakuenmae C-722 , Ohta, Kenji , Takahashi, Akira , Yamaoka, Hideyoshi
CPC分类号： H04N1/2195 , G11B7/08 , G11B11/10532 , H04N1/2175 , H04N2201/0084 , H04N2201/0089
摘要： A magneto-optical head assembly for a reflection type magneto-optical memory apparatus which uses a laser beam for recording, retrieving, and erasing data on a recording medium comprised of a vertical, magnetic, and anisotropic thin film, wherein the light beam emitted from said head assembly is guided to a fixed position on said recording medium by a light detection apparatus for receiving a control signal, and by a separate light detection apparatus for receiving a data signal. And wherein a beam splitter, to which has been applied a multicoated thin film dielectric body capable of increasing the Kerr rotation angle of the laser beam reflected from the recording medium, is positioned in the optical system through which the laser beam passes.
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