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    Information-recording thin film and method for recording and reproducing information
    5.
    发明公开
    Information-recording thin film and method for recording and reproducing information 失效
    信息记录薄膜和记录和再现信息的方法

    公开(公告)号：EP0335469A3

    公开(公告)日：1991-09-04

    申请号：EP89200786.5

    申请日：1989-03-28

    申请人： HITACHI, LTD. ,  Hitachi Maxell Ltd.

    发明人： Nishida, Tetsuya ,  Terao, Motoyasu ,  Tamura, Reiji ,  Miyauchi, Yasushi ,  Andoo, Keikichi

    IPC分类号： G11B7/00 ,  G11B7/24

    CPC分类号： G11B7/24 ,  G11B7/00557 ,  G11B7/006 ,  G11B7/243 ,  G11B7/2534 ,  G11B7/258 ,  G11B2007/24304 ,  G11B2007/24306 ,  G11B2007/24308 ,  G11B2007/24312 ,  G11B2007/24314 ,  G11B2007/24316

    摘要： An information-recording thin film (21) capable of changing an atomic configuration upon exposure to a recording energy beam, formed on a substrate (19) directly or through a protective layer (20) composed of at least one of inorganic materials and organic materials, an average composition in the direction perpendicular to the film plane of the information-recording thin film being represented by the following general formula: Ge X Te Y Sb Z A α B β wherein X, Y, Z, α and β are in ranges of 0 ≦ X ≦ 18, 45 ≦ Y ≦ 70, 11 ≦ Z ≦ 54, 0 ≦ α ≦ 20 and 0 ≦ β ≦ 20 and 1 ≦ α + β ≦ 20 in atomic percentage, A is at least one element of Tl, halogen elements and alkali metal elements and B is at least one element of Co, Fe, Ni, Sc, Ti, V, Cr, Mn, Cn, Zn, Y, Zr, Nb, Mo, Ru, Rh, Pd, Ag, Cd, Hf, Ta, W, Re, Os, Ir, Pt and An has distinguished recording and reproducing characteristics and can record information stably for a long time and rewrite information many times.

    摘要翻译： 一种信息记录薄膜（21），其能够在暴露于记录能量束时改变原子构造，直接或通过由无机材料和有机材料中的至少一种构成的保护层（20）形成在基板（19） 垂直于信息记录薄膜的膜平面的方向上的平均组成由以下通式表示：GeXTeYSbZAαBβ其中X，Y，Z，α和β的范围为0≤X≤18,45≤ Y≤70,11≤Z≤54,0≤α≤20和0≤β≤20且1≤α+β≤20原子百分比，A是T1，卤族元素和碱金属元素中的至少一种元素和B 是Co，Fe，Ni，Sc，Ti，V，Cr，Mn，Cn，Zn，Y，Zr，Nb，Mo，Ru，Rh，Pd，Ag，Cd，Hf，Ta，W， Re，Os，Ir，Pt和An具有卓越的记录和再现特性，可以长时间稳定记录信息并重写信息多次。

    Information-recording thin film and method for recording and reproducing information
    6.
    发明公开
    Information-recording thin film and method for recording and reproducing information 失效
    信息记录薄膜和记录和再现信息的方法

    公开(公告)号：EP0362852A3

    公开(公告)日：1991-08-28

    申请号：EP89118519.1

    申请日：1989-10-05

    申请人： HITACHI, LTD. ,  Hitachi Maxell Ltd.

    发明人： Tamura, Reiji Shihoryo, 1468-5 ,  Terao, Motoyasu ,  Miyauchi, Yasushi ,  Andoo, Keikichi ,  Nishida, Tetsuya

    IPC分类号： G11B7/00 ,  G11B7/24

    CPC分类号： G11B7/243 ,  G11B7/00557 ,  G11B7/2531 ,  G11B7/2595 ,  G11B2007/24306 ,  G11B2007/24308 ,  G11B2007/2431 ,  G11B2007/24312 ,  G11B2007/24314 ,  G11B2007/24316 ,  G11B2007/24328 ,  G11B2007/2571 ,  G11B2007/25713

    摘要： An information recording thin film (21) capable of changing an atomic arrangement upon exposure to a recording beam, formed on a substrate (19) directly or through a protective layer (20) composed of at least one of inorganic materials and organic materials, an average composition in the film thickness direction of the information-recording thin film being represented by the following general formula:
    Sn x Sb y Te z Se α A β B γ C δ
    wherein x, y, z, α, β, γ and δ are in ranges of 3 ≦ x ≦ 50, 10 ≦ y ≦ 70, 10 ≦ z+α ≦ 87, 0.1 ≦ z/α ≦ 10, 0 ≦ β ≦ 20, 0 ≦ γ ≦ 30 and 0 ≦ δ ≦ 30 in atomic percentage, A is at least one element of Tl, halogen atoms and alkali metals, B is at least one element of Au, Ag, Cu, Pd, Ta, W, Ir, Sc, Y, Ti, Zr, V, Nb, Cr, Mo, Mn, Fe, Ru, Co, Rh and Ni, and C is at least one of other elements than Sn, Sb, Te, Se and those represented by A and B, or by the following general formula:
    Sb x Te y A′ z B′ α C′ β D γ
    wherein x y, z, α, β and γ are in ranges of 5 ≦ x ≦ 70, 10 ≦ y ≦ 85, 3 ≦ z ≦ 30, 0 ≦ α ≦ 20, 0 ≦ β ≦ 30, 0 ≦ γ ≦ 10, A′ is at least one element of Sn, Bi, Pb, Ga, Au and In, and B′ is at least one element of Tl, halogen atoms and alkali metals, C′ is at least one element of Ag, Cu, Pd, Ta, W, Ir, Sc, Y, Ti, Zr, V, Nb, Cr, Mo, Mn, Fe, Ru, Co, Rh and Ni, and D is at least one of other elements than Sb, Te and those represented by A′, B′, and C′, gives an information-recording member having good recording and reproducing characteristics with a good stability for a long time and capable of a large number of information rewriting.

    Magneto-optical recording medium
    7.
    发明公开
    Magneto-optical recording medium 失效
    磁选机Aufzeichnungsträger。

    公开(公告)号：EP0428128A2

    公开(公告)日：1991-05-22

    申请号：EP90121683.8

    申请日：1990-11-13

    申请人： HITACHI, LTD. ,  HITACHI MAXELL, LTD.

    发明人： Miyamoto, Harukazu ,  Niihara, Toshio ,  Terao, Motoyasu ,  Ohta, Norio ,  Kurebayashi, Masaaki

    IPC分类号： G11B11/10

    CPC分类号： G11B11/10523 ,  G11B11/10506 ,  G11B11/10515 ,  G11B11/10519 ,  G11B11/10586 ,  Y10T428/265

    摘要： A magneto-optical recording medium having a substrate (1) and a magnetic layer composed of at least a recording layer (3) and a supporting layer (4) and being capable of retrieving information by utilizing the fact that when it is irradiated with a laser beam it produces the magneto-optical effect which affects its reflected light, characterized in that the recording layer (3) has a lower Curie temperature than has the supporting layer (4) and the recording layer (3) is thin enough for the laser beam to pass through.
    A magneto-optical recording medium as defined above, wherein the supporting layer (4) is composed of a first supporting layer and a second supporting layer, and the recording layer (3), the first supporting layer, and the second supporting layer have Curie temperatures of T₁, T₂, and T₃, respectively, which satisfy the following relationship.
    T₁
    A magneto-optical recording medium defined as above, wherein the recording layer (3) has a higher Curie temperature than has the supporting layer (4).
    Owing to the above-mentioned features, the magneto-optical recording media of the present invention are capable of overwriting and have improved recording sensitivity.

    摘要翻译： 一种磁光记录介质，具有基板（1）和由至少记录层（3）和支撑层（4）构成的磁性层，并且能够通过利用以下事实来检索信息： 激光束产生影响其反射光的磁光效应，其特征在于记录层（3）具有比支撑层（4）更低的居里温度，并且记录层（3）对于激光器足够薄 光束通过。 如上所述的磁光记录介质，其中所述支撑层（4）由第一支撑层和第二支撑层构成，并且所述记录层（3），所述第一支撑层和所述第二支撑层具有居里 分别满足以下关系的T1，T2和T3的温度。 T1 / = T3如上定义的磁光记录介质，其中记录层（3）具有比具有支撑层（4）的更高的居里温度。 由于上述特征，本发明的磁光记录介质能够重写并具有提高的记录灵敏度。

    Information-recording thin film and method for recording and reproducing information
    8.
    发明公开
    Information-recording thin film and method for recording and reproducing information 失效
    Informationsaufzeichnungsdünnschichtund Methode zur Aufnahme und Wiedergabe von Information。

    公开(公告)号：EP0362852A2

    公开(公告)日：1990-04-11

    申请号：EP89118519.1

    申请日：1989-10-05

    申请人： HITACHI, LTD. ,  Hitachi Maxell Ltd.

    发明人： Tamura, Reiji Shihoryo, 1468-5 ,  Terao, Motoyasu ,  Miyauchi, Yasushi ,  Andoo, Keikichi ,  Nishida, Tetsuya

    IPC分类号： G11B7/00 ,  G11B7/24

    CPC分类号： G11B7/243 ,  G11B7/00557 ,  G11B7/2531 ,  G11B7/2595 ,  G11B2007/24306 ,  G11B2007/24308 ,  G11B2007/2431 ,  G11B2007/24312 ,  G11B2007/24314 ,  G11B2007/24316 ,  G11B2007/24328 ,  G11B2007/2571 ,  G11B2007/25713

    摘要： An information recording thin film (21) capable of changing an atomic arrangement upon exposure to a recording beam, formed on a substrate (19) directly or through a protective layer (20) composed of at least one of inorganic materials and organic materials, an average composition in the film thickness direction of the information-recording thin film being represented by the following general formula:
    Sn x Sb y Te z Se α A β B γ C δ
    wherein x, y, z, α, β, γ and δ are in ranges of 3 ≦ x ≦ 50, 10 ≦ y ≦ 70, 10 ≦ z+α ≦ 87, 0.1 ≦ z/α ≦ 10, 0 ≦ β ≦ 20, 0 ≦ γ ≦ 30 and 0 ≦ δ ≦ 30 in atomic percentage, A is at least one element of Tl, halogen atoms and alkali metals, B is at least one element of Au, Ag, Cu, Pd, Ta, W, Ir, Sc, Y, Ti, Zr, V, Nb, Cr, Mo, Mn, Fe, Ru, Co, Rh and Ni, and C is at least one of other elements than Sn, Sb, Te, Se and those represented by A and B, or by the following general formula:
    Sb x Te y A′ z B′ α C′ β D γ
    wherein x y, z, α, β and γ are in ranges of 5 ≦ x ≦ 70, 10 ≦ y ≦ 85, 3 ≦ z ≦ 30, 0 ≦ α ≦ 20, 0 ≦ β ≦ 30, 0 ≦ γ ≦ 10, A′ is at least one element of Sn, Bi, Pb, Ga, Au and In, and B′ is at least one element of Tl, halogen atoms and alkali metals, C′ is at least one element of Ag, Cu, Pd, Ta, W, Ir, Sc, Y, Ti, Zr, V, Nb, Cr, Mo, Mn, Fe, Ru, Co, Rh and Ni, and D is at least one of other elements than Sb, Te and those represented by A′, B′, and C′, gives an information-recording member having good recording and reproducing characteristics with a good stability for a long time and capable of a large number of information rewriting.

    摘要翻译： 一种信息记录薄膜（21），其能够在直接或通过由无机材料和有机材料中的至少一种构成的保护层（20）形成在基板（19）上而在暴露于记录光束时改变原子排列， 信息记录薄膜的膜厚度方向的平均组成由以下通式表示：SnxSbyTezSeαAβBγC delta其中x，y，z，α，β，γ和δ在3 < / = x

    Magneto-optical recording medium
    9.
    发明公开
    Magneto-optical recording medium 失效
    磁光记录介质

    公开(公告)号：EP0428128A3

    公开(公告)日：1992-10-21

    申请号：EP90121683.8

    申请日：1990-11-13

    申请人： HITACHI, LTD. ,  HITACHI MAXELL, LTD.

    发明人： Miyamoto, Harukazu ,  Niihara, Toshio ,  Terao, Motoyasu ,  Ohta, Norio ,  Kurebayashi, Masaaki

    IPC分类号： G11B11/10

    CPC分类号： G11B11/10523 ,  G11B11/10506 ,  G11B11/10515 ,  G11B11/10519 ,  G11B11/10586 ,  Y10T428/265

    摘要： A magneto-optical recording medium having a substrate (1) and a magnetic layer composed of at least a recording layer (3) and a supporting layer (4) and being capable of retrieving information by utilizing the fact that when it is irradiated with a laser beam it produces the magneto-optical effect which affects its reflected light, characterized in that the recording layer (3) has a lower Curie temperature than has the supporting layer (4) and the recording layer (3) is thin enough for the laser beam to pass through. A magneto-optical recording medium as defined above, wherein the supporting layer (4) is composed of a first supporting layer and a second supporting layer, and the recording layer (3), the first supporting layer, and the second supporting layer have Curie temperatures of T₁, T₂, and T₃, respectively, which satisfy the following relationship.
    T₁ A magneto-optical recording medium defined as above, wherein the recording layer (3) has a higher Curie temperature than has the supporting layer (4). Owing to the above-mentioned features, the magneto-optical recording media of the present invention are capable of overwriting and have improved recording sensitivity.

    摘要翻译： 一种磁光记录媒体，它具有基片（1）和至少由记录层（3）和支持层（4）构成的磁性层，并且能够利用这样的事实来检索信息，即当它被照射 激光束产生影响其反射光的磁光效应，其特征在于记录层（3）具有比支撑层（4）低的居里温度，并且记录层（3）对于激光来说足够薄 光束通过。 一种如上定义的磁光记录介质，其中支撑层（4）由第一支撑层和第二支撑层组成，并且记录层（3），第一支撑层和第二支撑层具有居里 温度T 1，T 2和T 3分别满足以下关系。 T 1

    Information recording medium and information recording and reproducing method and apparatus
    10.
    发明公开
    Information recording medium and information recording and reproducing method and apparatus 失效
    记录盘和方法和设备用于记录和再现数据。

    公开(公告)号：EP0432731A2

    公开(公告)日：1991-06-19

    申请号：EP90123820.4

    申请日：1990-12-11

    申请人： HITACHI, LTD. ,  HITACHI MAXELL, LTD.

    发明人： Okamine, Shigenori ,  Nishida, Tetsuya ,  Horigome, Shinkichi ,  Terao, Motoyasu ,  Ohta, Norio

    IPC分类号： G11B7/24 ,  G11B7/00

    CPC分类号： G11B7/24 ,  G11B7/0045

    摘要： An information recording medium (32) which comprises two or more energy beam absorbing layers (2, 4) which are formed at different positions across the thickness within the depth of focus of the energy beam, and an energy beam transmitting layer (3) interposed between said energy beam absorbing layers (2, 4).
    A method for recording and reproducing information by applying an energy beam to an information recording medium (32) mentioned above, characterized in that the information recording is accomplished in response to the energy beam power which varies or the pulse waveform which varies, or both.
    An apparatus for reproducing information which comprises a means (30) to encode information into recording signals and a means (31) to drive the irradiating energy beam.
    The information recording medium (32) has a high recording density and a large recording capacity owing to its capability of multi-valued recording.

    摘要翻译： 其包括两个或多个能量束吸收层的信息记录介质（32）（2,4），它们是在整个能量束的焦点深度内的厚度的不同位置形成，并且，以能量束发射层（3）夹 所述能量束吸收层之间（2，4）。 通过在信息施加到能量束到记录上述培养基（32），用于记录和再现信息的方法，其特征在于，所做的信息记录是响应于而变化的能量束的功率或脉冲波形而变化，或二者来实现。 一种用于再现包括装置（30）的信息来编码信息到记录信号和装置（31）以驱动所述照射能量束的装置。 的信息记录介质（32）具有高的记录密度，并且由于其多值记录的能力的大的记录容量。