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公开(公告)号：US5681632A
公开(公告)日：1997-10-28
申请号：US598749
申请日：1996-02-08
申请人： Hideki Kitaura , Tetsuya Akiyama , Takeo Ohta , Ken'ichi Nagata , Katsumi Kawahara , Noboru Yamada
发明人： Hideki Kitaura , Tetsuya Akiyama , Takeo Ohta , Ken'ichi Nagata , Katsumi Kawahara , Noboru Yamada
CPC分类号： G11B7/2578 , G11B7/2403 , G11B7/252 , G11B2007/24312 , G11B2007/24314 , G11B2007/24316 , G11B2007/25706 , G11B2007/25708 , G11B2007/2571 , G11B2007/25711 , G11B2007/25713 , G11B2007/25715 , G11B2007/25716 , G11B2007/25718 , G11B7/0052 , G11B7/2531 , G11B7/2533 , G11B7/2534 , Y10S428/913 , Y10S430/146 , Y10T428/21
摘要： On a substrate, a recording layer which reversibly transforms between two states with different optical properties--a crystalline phase and an amorphous phase--by the irradiation of a laser beam, a first and a second dielectric layer on the bottom and the top surfaces of the recording layer, and a third dielectric layer on one surface of the first or the second dielectric layers and on the opposite side with respect to the recording layer are successively laminated, thus preparing an optical information recording medium. The third dielectric layer has a smaller coefficient of thermal expansion than the first and the second dielectric layers, so that the thermal deformation of the first and the second dielectric layers is reduced and the mass transfer of the recording layer is controlled. As a result, the overwrite cycle characteristics of the optical information recording medium are excellent.
摘要翻译： 在基板上，通过激光束的照射，在不同的光学特性的两个状态（晶体相和非晶相）之间可逆地变换的记录层，在第一和第二介电层的底部和顶表面上 在第一或第二电介质层的一个表面上和相对于记录层的相对侧上的第三介电层依次层叠，从而制备光学信息记录介质。 第三电介质层的热膨胀系数比第一和第二电介质层的热膨胀系数小，因此第一和第二电介质层的热变形减小，记录层的传质受到控制。 结果，光信息记录介质的重写周期特性优异。
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公开(公告)号：US07540006B2
公开(公告)日：2009-05-26
申请号：US10567356
申请日：2004-08-05
申请人： Ken'ichi Nagata , Kenichi Nishiuchi , Hideki Kitaura , Hideo Kusada , Noboru Yamada , Shinya Abe
发明人： Ken'ichi Nagata , Kenichi Nishiuchi , Hideki Kitaura , Hideo Kusada , Noboru Yamada , Shinya Abe
IPC分类号： G11B7/24
CPC分类号： G11B7/261 , G11B7/24076 , G11B7/266
摘要： An optical information recording medium includes one or more information layers including a recording layer for recording/reproducing an information signal by irradiation with a laser light, and a seperating layer or a protective substate on which a first information layer of the information layer on the irradiation face side is formed. The seperating layer or the protective substrate having a guide groove spirally or concentrically formed on the surface, and the respective inclined planes on the inner perimeter side and the outer perimeter side of the guide groove having inclined angles α and β with respect to the bottom face of the guide groove. The guide groove has one or more dissymmetric regions in the radius direction where the inclined angles α and β are different. The information layer has roughly agreeing thicknesses in the inclined face portion on the inner and outer perimeter sides in the dissymmetric region.
摘要翻译： 光信息记录介质包括一个或多个信息层，包括用于通过照射激光来记录/再现信息信号的记录层;以及分离层或保护子区，信息层的第一信息层在其上照射 正面形成。 分离层或保护基板具有螺旋地或同心地形成在表面上的引导槽，并且引导槽的内周侧和外周侧上的相应倾斜平面相对于底面具有α和β倾斜角 的导槽。 引导槽在倾斜角α和β不同的半径方向上具有一个或多个非对称区域。 信息层在不对称区域中的内周侧和外周侧上的倾斜面部中具有粗略一致的厚度。
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3.发明授权公开(公告)号：US06388984B2
公开(公告)日：2002-05-14
申请号：US09140296
申请日：1998-08-25
IPC分类号： G11B724
CPC分类号： G11B7/00718 , G11B7/24 , G11B7/24079
摘要： A reflectance increasing type optical information recording medium in which the crosstalk is inhibited in the land and groove recording. This optical information recording medium comprises a substrate having a groove and a land provided between adjacent grooves and a recording layer that is provided on the substrate and that changes the reflectance by irradiation with light beams. In this recording medium, the reflectance after recording is greater than the reflectance before recording. Moreover, the depth D of the groove is set to be in the range of &lgr;/8n to 3&lgr;/8n, where the wavelength of the light beam is &lgr; and the refractive index of the substrate is n. And the difference, &Dgr;&phgr;=&phgr;1−&phgr;0, between the phase &phgr;1 of the reflected light after recording and the phase &phgr;0 of the reflected light before recording is in the range of (−0.1+2 m) &pgr; to (0.1+2 m) &pgr;, where m is an integer.
摘要翻译： 反射率增加型光信息记录介质，其中在纹间和凹槽记录中阻止串扰。 该光学信息记录介质包括具有沟槽和设置在相邻沟槽之间的焊盘的衬底和设置在衬底上并通过照射光束来改变反射率的记录层。 在该记录介质中，记录后的反射率大于记录前的反射率。 此外，凹槽的深度D设定在lambd / 8n至3lambd / 8n的范围内，其中光束的波长为羔羊，并且基板的折射率为n。 并且记录后的反射光的相位phi1与记录前的反射光的相位phi0之间的差值DELTAphi = phi1-phi0在（-0.1 + 2m）pi到（0.1 +2μm）的范围内 pi，其中m是整数。
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公开(公告)号：US20060146685A1
公开(公告)日：2006-07-06
申请号：US10567356
申请日：2004-08-05
申请人： Ken'ichi Nagata , Kenichi Nishiuchi , Hideki Kitaura , Hideo Kusada , Noboru Yamada , Shinya Abe
发明人： Ken'ichi Nagata , Kenichi Nishiuchi , Hideki Kitaura , Hideo Kusada , Noboru Yamada , Shinya Abe
IPC分类号： G11B7/24
CPC分类号： G11B7/261 , G11B7/24076 , G11B7/266
摘要： An optical information recording medium is provided which has favorable signal quality even in high density recording using a translucent information layer. The optical information recording medium includes one or more information layers including a recording layer for recording/reproducing an information signal by irradiation with a laser light, and a separating layer or a protective substrate on which a first information layer of the information layer on the irradiation face side is formed, the separating layer or the protective substrate having a guide groove spirally or concentrically formed on the surface, and the respective inclined planes on the inner perimeter side and the outer perimeter side of the guide groove having inclined angles α and β with respect to the bottom face of the guide groove. The guide groove has one or more dissymmetric regions in the radius direction where the inclined angles α and β are different. The information layer has roughly agreeing thicknesses in the inclined face portion on the inner perimeter side and in the inclined face portion on the outer perimeter side in the dissymmetric region.
摘要翻译： 提供一种光信息记录介质，即使在使用半透明信息层的高密度记录中也具有良好的信号质量。 光信息记录介质包括一个或多个信息层，包括用于通过照射激光来记录/再现信息信号的记录层;以及分离层或保护基板，信息层的第一信息层在其上被照射 形成面侧，分离层或保护基板具有在表面上螺旋状或同心地形成的引导槽，并且导向槽的内周侧和外周侧上的相应倾斜面具有倾斜角α和β， 相对于导槽的底面。 引导槽在倾斜角α和β不同的半径方向上具有一个或多个非对称区域。 信息层在不对称区域的内周侧和外周侧的倾斜面部分中的倾斜面部分具有粗略一致的厚度。
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5.发明授权公开(公告)号：US06229785B1
公开(公告)日：2001-05-08
申请号：US09043988
申请日：1998-03-30
IPC分类号： G11B1100
CPC分类号： G11B7/243 , G11B7/24 , G11B7/26 , G11B2007/24306 , G11B2007/24316 , G11B2007/2432
摘要： An optical information recording medium provided with an information layer comprising at least Te, O and M atoms (wherein the M is at least one element selected from a metallic element, a metalloid element or a semiconductor element, most preferably Pd). The information layer comprises the O atoms in 40 atom %-60 atom %, the M atoms in 2 atom %-25 atom % and the Te atoms in 15 atom %-58 atom %, thus obtaining a preferable recording property having a high C/N ratio and a small jitter in a wide power margin in recording and reproducing information having a small b/d ratio (a ratio of a recording bit length b for a spot diameter d).
摘要翻译： 一种具有至少包含Te，O和M原子的信息层（其中M是选自金属元素，准金属元素或半导体元素中的至少一种元素，最优选Pd）的光学信息记录介质。 该信息层包括40原子％-60原子％的O原子，2原子％-25原子％的M原子和15原子％-58原子％的Te原子，从而获得具有高C / N比，并且在具有小b / d比（记录位长度b对于点直径d的比率）的记录和再现信息中的宽功率余量中的小抖动。
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6.发明申请公开(公告)号：US20050030882A1
公开(公告)日：2005-02-10
申请号：US10912093
申请日：2004-08-06
申请人： Hideo Kusada , Ken'ichi Nagata , Hideki Kitaura , Kenichi Nishiuchi , Noboru Yamada , Rie Kojima
发明人： Hideo Kusada , Ken'ichi Nagata , Hideki Kitaura , Kenichi Nishiuchi , Noboru Yamada , Rie Kojima
IPC分类号： C23C14/08 , C23C14/20 , C23C14/54 , C23C14/56 , G11B7/00 , G11B7/24038 , G11B7/26 , G11B7/24
CPC分类号： G11B7/266 , C23C14/08 , C23C14/205 , C23C14/542 , C23C14/568 , G11B7/24038
摘要： The present invention provides an optical information recording medium of excellent signal quality in high density recording onto a semitransparent information layer, its manufacturing method and a manufacturing apparatus. The optical information recording medium of the present invention includes at least a semitransparent information layer disposed between a circular transparent substrate and a protective substrate, in which the information layer has spiral grooves for guiding a light beam, and also includes a recording film capable of recording/reproducing information thereon/therefrom by changing at least in two states detectable optically by irradiation of the light beam from the transparent substrate side, and the difference in film thickness of slope portions of the inner circumferential side and outer circumferential side of the groove is within ±10% in the entire region for recording/reproducing information.
摘要翻译： 本发明提供一种在半透明信息层的高密度记录中具有优异的信号质量的光学信息记录介质，其制造方法和制造装置。 本发明的光信息记录介质至少包括设置在圆形透明基板和保护基板之间的半透明信息层，其中信息层具有用于引导光束的螺旋槽，并且还包括能够记录的记录膜 通过至少通过从透明基板侧照射光束可以光学检测的两个状态来改变其上的信息，并且凹槽的内周侧和外周侧的斜坡部分的膜厚差在 整个区域的记录/再现信息为±10％。
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7.发明授权公开(公告)号：US07423957B2
公开(公告)日：2008-09-09
申请号：US10912093
申请日：2004-08-06
申请人： Hideo Kusada , Ken'ichi Nagata , Hideki Kitaura , Kenichi Nishiuchi , Noboru Yamada , Rie Kojima
发明人： Hideo Kusada , Ken'ichi Nagata , Hideki Kitaura , Kenichi Nishiuchi , Noboru Yamada , Rie Kojima
IPC分类号： G11B7/24
CPC分类号： G11B7/266 , C23C14/08 , C23C14/205 , C23C14/542 , C23C14/568 , G11B7/24038
摘要： The present invention provides an optical information recording medium of excellent signal quality in high density recording onto a semitransparent information layer, its manufacturing method and a manufacturing apparatus. The optical information recording medium of the present invention includes at least a semitransparent information layer disposed between a circular transparent substrate and a protective substrate, in which the information layer has spiral grooves for guiding a light beam, and also includes a recording film capable of recording/reproducing information thereon/therefrom by changing at least in two states detectable optically by irradiation of the light beam from the transparent substrate side, and the difference in film thickness of slope portions of the inner circumferential side and outer circumferential side of the groove is within ±10% in the entire region for recording/reproducing information.
摘要翻译： 本发明提供一种在半透明信息层的高密度记录中具有优异的信号质量的光学信息记录介质，其制造方法和制造装置。 本发明的光信息记录介质至少包括设置在圆形透明基板和保护基板之间的半透明信息层，其中信息层具有用于引导光束的螺旋槽，并且还包括能够记录的记录膜 通过至少通过从透明基板侧照射光束可以光学检测的两个状态来改变其上的信息，并且凹槽的内周侧和外周侧的斜坡部分的膜厚差在 整个区域的记录/再现信息为±10％。
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8.发明授权公开(公告)号：US06268034B1
公开(公告)日：2001-07-31
申请号：US09368589
申请日：1999-08-04
申请人： Hideki Kitaura , Katsumi Kawahara , Noboru Yamada , Hiroyuki Ohta
发明人： Hideki Kitaura , Katsumi Kawahara , Noboru Yamada , Hiroyuki Ohta
IPC分类号： B32B302
CPC分类号： G11B7/126 , G11B7/00454 , G11B7/005 , G11B7/006 , G11B7/00718 , G11B7/24 , G11B7/252 , G11B7/2531 , G11B7/2533 , G11B7/2534 , G11B7/256 , G11B7/2578 , G11B7/2585 , G11B7/259 , G11B7/2595 , G11B7/26 , G11B2007/24312 , G11B2007/24314 , G11B2007/24316 , G11B2007/24322 , G11B2007/25706 , G11B2007/25708 , G11B2007/2571 , G11B2007/25713 , G11B2007/25715 , G11B2007/25716 , G11B2007/25718 , Y10S428/913 , Y10S430/146 , Y10T428/21 , Y10T428/31678
摘要： An optical information recording medium of the present invention includes a transparent substrate and a multi-layered film formed on the transparent substrate. The multi-layered film includes a lower protective layer, a recording layer that changes reversibly between different states detectable optically by irradiation of light beams, an upper protective layer, an intermediate layer and a reflective layer in this order from the side near the transparent substrate. Of the upper protective layer, the intermediate layer and the reflective layer, the heat conductivity of the layer closest to the recording layer is the smallest of the three layers, and thereafter the heat conductivities of the others increase with increasing the distance from the recording layer, and the thickness of the recording layer is from 4 nm to 16 nm. In addition, a light absorption layer can be used in place of the intermediate layer. In this case, the difference between the refractive index of the light absorption layer and the refractive index of the reflective layer is 2 to 6, and the thickness of the reflective layer is not smaller than the thickness of the light absorption layer. Alternatively, the light absorption layer has a thickness d, in a range of 0.1 &lgr;/(n1·k1)≦d1≦1.0 &lgr;/(n1·k1), where n1 is a refractive index and k1 is an extinction coefficient of the light absorption layer.
摘要翻译： 本发明的光信息记录介质包括透明基板和形成在透明基板上的多层膜。 多层膜包括下保护层，在从透明基板的附近侧依次照射光束，上保护层，中间层和反射层的不同状态之间可逆地变化的记录层 。 在上保护层，中间层和反射层中，最靠近记录层的层的热导率是三层中的最小的层，其后的热导率随着与记录层的距离的增加而增加 ，记录层的厚度为4nm〜16nm。 此外，可以使用光吸收层来代替中间层。 在这种情况下，光吸收层的折射率与反射层的折射率之差为2〜6，反射层的厚度不小于光吸收层的厚度。 或者，光吸收层的厚度d在0.1兰姆/（n1.k1）<= d1 <= 1.0兰德/（n1.k1）的范围内，其中n1是折射率，k1是消光系数 光吸收层。
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9.发明申请公开(公告)号：US20090323495A1
公开(公告)日：2009-12-31
申请号：US12095894
申请日：2006-11-27
申请人： Hideki Kitaura , Yukako Doi , Noboru Yamada
发明人： Hideki Kitaura , Yukako Doi , Noboru Yamada
CPC分类号： G11B7/2578 , G11B2007/25706 , G11B2007/25715 , Y10T428/21
摘要： An optical information recording medium, recording/reproducing method thereof, and recording/reproducing apparatus with superior signal quality for high-density recording that has high storage reliability is provided. The optical information recording medium of the present invention has at least one information layer having a recording layer and a dielectric layer in order on a transparent substrate. The dielectric layer is comprised of greater than or equal to 50 molecule percent and less than or equal to 98 molecule percent of Zn—O, and greater than or equal to 2 molecule percent to less than or equal to 50 molecule percent of one or more compounds selected from the group consisting of Y—O, Ce—O, Nb—O, Ta—O, Cr—O and Mo—O.
摘要翻译： 提供了具有高存储可靠性的高密度记录的具有优异信号质量的光学信息记录介质，其记录/再现方法以及记录/再现装置。 本发明的光信息记录介质在透明基板上依次具有至少一个具有记录层和电介质层的信息层。 电介质层由大于或等于50分子百分比和小于或等于98分子％的Zn-O组成，并且大于或等于2分子％至小于或等于50分子％的一个或多个 选自YO，Ce-O，Nb-O，Ta-O，Cr-O和Mo-O的化合物。
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10.发明授权公开(公告)号：US07431973B2
公开(公告)日：2008-10-07
申请号：US11059657
申请日：2005-02-17
申请人： Hideki Kitaura , Noboru Yamada , Rie Kojima
发明人： Hideki Kitaura , Noboru Yamada , Rie Kojima
IPC分类号： B32B3/02
CPC分类号： G11B7/00454 , G11B7/00557 , G11B7/24 , Y10T428/21
摘要： A recording medium has at least a recording layer on a transparent substrate. The recording layer has at least a first phase-changeable film and a second phase-changeable film in that order, starting on the side closest to the transparent substrate. The first phase-changeable film and the second phase-changeable film each contains at least 10 atom % and no more than 50 atom % germanium and at least 45 atom % and no more than 60 atom % tellurium. Also at least one of the phase-changeable films contains bismuth.
摘要翻译： 记录介质在透明基板上至少具有记录层。 从最靠近透明基板的一侧开始，记录层依次具有至少第一相变膜和第二相变膜。 第一相变膜和第二相变膜各自含有至少10原子％且不超过50原子％的锗和至少45原子％且不超过60原子％的碲。 另外至少一个相变膜含有铋。
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