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公开(公告)号：EP0170393A1
公开(公告)日：1986-02-05
申请号：EP85304452.7
申请日：1985-06-21
发明人： Ohkawa, Hideki c/o Patent Division , Ichihara, Katsutarou c/o Patent Division , Terashima, Yoshiaki c/o Patent Division , Yasuda, Nobuaki c/o Patent Division
IPC分类号： G11B5/66
CPC分类号： G11B5/72 , Y10S428/90 , Y10T428/2495 , Y10T428/24967 , Y10T428/26 , Y10T428/265
摘要： A data recording medium comprising, as a recording layer, a thin magnetic alloy film (2) having an axis of easy magnetization along a direction perpendicular to the surface thereof, and an anticorrosion protective layer (3) formed on the recording layer (2). This recording medium is featured in that the anticorrosion protective layer (3) is formed of a thin oxide film which is obtained by subjecting the surface portion of the recording layer (2) to an anodic oxidization. This protective layer (2) may be further covered with a dielectric film as a second protective covering.
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公开(公告)号：EP0186911A2
公开(公告)日：1986-07-09
申请号：EP85116606.6
申请日：1985-12-27
发明人： Ikegawa, Sumio c/o Patent Division , Terashima, Yoshiaki c/o Patent Division , Yasuda, Nobuaki c/o Patent Division , Ichihara, Katsutarou c/o Patent Division , Komatsu, Shuichi c/o Patent Division , Arai, Shinji c/o Patent Division
CPC分类号： G11B7/00454 , G11B5/00 , G11B7/243 , G11B11/105 , G11B11/18 , G11B11/20 , G11B2007/24306 , G11B2007/24308 , G11B2007/2431
摘要： in a reversible memory system, a pulsed laser beam generated from a laser unit is directed to a recording layer (2) formed on a substrate 1. The recording layer (2) essentially consists of a recording medium, for example, an iron-nickel alloy containing iron as a mayor component and 27 to 30 atomic % of nickel, which undergoes martensite transformation from a low-temperature phase (D) to a high-temperature phase (E) at a predetermined temperature Af and which undergoes a stress-induced transformation (a 2 ) at a characteristic temperature Md. When a region of the recording layer is irradiated with the laser beam having a predetermined intensity, the region undergoes a stress-induced transformation (a 2 ) so that the region is changed from the high temperature phase (A) to the low temperature phase (8).
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公开(公告)号：EP0170393B1
公开(公告)日：1988-11-02
申请号：EP85304452.7
申请日：1985-06-21
发明人： Ohkawa, Hideki c/o Patent Division , Ichihara, Katsutarou c/o Patent Division , Terashima, Yoshiaki c/o Patent Division , Yasuda, Nobuaki c/o Patent Division
IPC分类号： G11B5/66
CPC分类号： G11B5/72 , Y10S428/90 , Y10T428/2495 , Y10T428/24967 , Y10T428/26 , Y10T428/265
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公开(公告)号：EP0191226B1
公开(公告)日：1991-02-27
申请号：EP85307958.0
申请日：1985-11-01
发明人： Ichihara, Katsutarou c/o Patent Division , Yasuda, Nobuaki c/o Patent Division , Taira, Kozo c/o Patent Division , Kobori, Hiromichi c/o Patent Division , Terashima, Yoshiaki c/o Patent Division , Shimanuki, Senji c/o Patent Division
CPC分类号： G11B5/64 , G11B11/10586 , G11B11/10589
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公开(公告)号：EP0186911B1
公开(公告)日：1991-01-23
申请号：EP85116606.6
申请日：1985-12-27
发明人： Ikegawa, Sumio c/o Patent Division , Terashima, Yoshiaki c/o Patent Division , Yasuda, Nobuaki c/o Patent Division , Ichihara, Katsutarou c/o Patent Division , Komatsu, Shuichi c/o Patent Division , Arai, Shinji c/o Patent Division
CPC分类号： G11B7/00454 , G11B5/00 , G11B7/243 , G11B11/105 , G11B11/18 , G11B11/20 , G11B2007/24306 , G11B2007/24308 , G11B2007/2431
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公开(公告)号：EP0218380B1
公开(公告)日：1990-11-22
申请号：EP86306993.6
申请日：1986-09-10
发明人： Ichihara, Katsutarou c/o Patent Division , Terashima, Yoshiaki c/o Patent Division , Yasuda, Nobuaki c/o Patent Division , Hori, Akio c/o Patent Division
CPC分类号： G11B11/10582 , G11B7/24 , Y10S430/146
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公开(公告)号：EP0218380A1
公开(公告)日：1987-04-15
申请号：EP86306993.6
申请日：1986-09-10
发明人： Ichihara, Katsutarou c/o Patent Division , Terashima, Yoshiaki c/o Patent Division , Yasuda, Nobuaki c/o Patent Division , Hori, Akio c/o Patent Division
CPC分类号： G11B11/10582 , G11B7/24 , Y10S430/146
摘要： A magneto-optical recording disk (10) has a transparent resinous substrate (12) with a pre-groove (14), and a metallic recording layer (20) formed above the substrate (12). A transparent adhesive layer (18) is provided between the substrate (12) and the recording layer (20), for allowing a laser beam (16) to pass therethrough, and for causing the recording layer (20) to be tightly adhered to the substrate (12) to thereby prevent the recording layer (20) from being peeled off from the substrate (12). The adhesive layer (18) is comprised of a fluorine resin material.
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公开(公告)号：EP0191226A2
公开(公告)日：1986-08-20
申请号：EP85307958.0
申请日：1985-11-01
发明人： Ichihara, Katsutarou c/o Patent Division , Yasuda, Nobuaki c/o Patent Division , Taira, Kozo c/o Patent Division , Kobori, Hiromichi c/o Patent Division , Terashima, Yoshiaki c/o Patent Division , Shimanuki, Senji c/o Patent Division
CPC分类号： G11B5/64 , G11B11/10586 , G11B11/10589
摘要： A rewritable magneto-optical disc comprises a substrate (10), a recording layer (14) formed on the substrate (10) and made of an amorphous alloy of rare earth transition metal elements having an axis of easy magnetization perpendicular to a substrate surface, and a protective layer (20) formed on the recording layer (14) for protection of the recording layer. The rare earth element in the recording layer (14) is Tb and the transition metal element therein is Co, and the content of Tb in the recording layer (14) falls within a range between 21 atomic % and 30 atomic %.
摘要翻译： 可重写磁光盘包括基板（10），形成在基板（10）上并由具有垂直于基板表面的易磁化轴的稀土过渡金属元素的非晶态合金制成的记录层（14） 以及形成在记录层（14）上用于保护记录层的保护层（20）。 记录层（14）中的稀土元素为Tb，其中的过渡金属元素为Co，记录层（14）中的Tb的含量在21原子％〜30原子％的范围内。
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