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公开(公告)号：US20060007844A1
公开(公告)日：2006-01-12
申请号：US11225136
申请日：2005-09-13
IPC分类号： G11B7/00
CPC分类号： G11B7/24067 , G11B7/24056
摘要： An optical disc comprising a substrate and a recording layer and a light-transmitting layer, laid on a substrate one upon the other in the order mentioned. A light beam is applied to the recording layer through the light-transmitting layer, to record and/or reproduce data on the disc. The light-transmitting layer is composed of at least two material layers laid one on the other and having different refractive indices. The disc is designed to set the spherical aberration caused by an objective lens that focuses the light beam used to record and/or reproduce data, at a value close to a minimum.
摘要翻译： 一种光盘，包括基板和记录层以及透光层，按所述顺序一个接一个地放置在基板上。 通过透光层将光束施加到记录层，以在盘上记录和/或再现数据。 透光层由至少两层彼此叠置并具有不同折射率的材料层组成。 光盘被设计成设置由用于记录和/或再现数据的光束聚焦的物镜所引起的球面像差，接近于最小值。
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公开(公告)号：US06707787B2
公开(公告)日：2004-03-16
申请号：US09941523
申请日：2001-08-29
IPC分类号： G11B370
CPC分类号： G11B7/26 , B29C41/28 , B29C47/00 , B29C47/0021 , B29C65/4825 , B29C65/4835 , B29C65/4845 , B29C65/521 , B29C66/1122 , B29C66/345 , B29C66/452 , B29C66/71 , B29C66/73343 , B29C66/73921 , B29C66/81455 , B29C66/8322 , B29D17/005 , B29K2995/0032 , B29L2017/005 , G11B7/24 , G11B23/0092 , B29K2069/00
摘要： An optical recording medium capable of improving uniformity of thickness of a protective film and suppressing warping. The medium is configured to include a substrate, an optical recording film formed on the substrate, and a light transmitting protective film formed above the optical recording layer, wherein the protective film includes a polymer sheet produced by melt casting and an adhesive layer for bonding the polymer sheet to the optical recording layer. As the polymer sheet, a polycarbonate sheet, a cyclic polyolefin sheet, etc. can be used. As the adhesive layer, an ultraviolet curing resin, a heat curing resin, an epoxy resin-based adhesive agent or a pressure-sensitive tackiness agent may be used alone or mixed or stacked.
摘要翻译： 能够提高保护膜厚度均匀性并抑制翘曲的光记录介质。 介质被配置为包括基板，形成在基板上的光学记录膜和形成在光学记录层上方的透光保护膜，其中保护膜包括通过熔体流延制造的聚合物片和用于粘结 聚合物片材到光学记录层。 作为聚合物片材，可以使用聚碳酸酯片材，环状聚烯烃片材等。 作为粘合剂层，可以单独使用紫外线硬化树脂，热固化树脂，环氧树脂系粘合剂或压敏粘合剂，也可以混合或层叠。
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公开(公告)号：US06613396B1
公开(公告)日：2003-09-02
申请号：US09552220
申请日：2000-04-19
IPC分类号： G11B726
CPC分类号： G11B7/2542 , B29D17/005 , B29L2009/00 , G11B7/24 , G11B7/2433 , G11B7/2531 , G11B7/2533 , G11B7/2534 , G11B7/254 , G11B7/2578 , G11B7/2585 , G11B7/26 , G11B7/266 , G11B2007/24304
摘要： An optical disc and its manufacturing method in which humps may be prohibited from being formed on an outer rim area of the disc to assure optimum surface properties of a light transmitting layer of the disc to contribute to further increase in recording capacity. On a substrate 2 of an optical disc 1 are sequentially formed a recording portion 6 and a light transmitting layer 5. The light falls on the light transmitting layer 5 to record and/or reproduce information signals for a signal recording area 6a of the substrate 2. The radial distance D from the outermost rim of the substrate 2 to the signal recording area 6a is selected to be larger than the radial width L of a hump 5a formed on the outer rim of the light transmitting layer 5. The hump 5a has a height h from the surface of the light transmitting layer 5 not larger than 70 &mgr;m.
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公开(公告)号：US5852329A
公开(公告)日：1998-12-22
申请号：US834159
申请日：1997-04-14
CPC分类号： B29C45/0025 , B29C45/263 , B29C45/2632 , B29C2045/2659 , B29C2045/2667 , Y10S425/81
摘要： An optical disc molding device has a pair of molds for injection molding a disc substrate within cavities, and a stamper supported within at least one cavity, for molding a data recording surface in such a manner that the inside diameter side of the stamper supporting surface of the cavity protrudes inwardly in the disc thickness direction from the data recording surface. The flatness of a laminated reference plane has thus been deteriorated by burrs occurring on a disc substrate.
摘要翻译： 一种光盘成型装置具有一对用于将空心内的盘基片注射成型的模具，以及支承在至少一个空腔内的压模，用于模塑数据记录表面，使得压模支承表面的内径侧 空腔从数据记录表面沿盘厚度方向向内突出。 因此，通过在盘基片上产生的毛刺，层压基准平面的平坦度已经恶化。
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25.发明授权Reproducing apparatus using an information recording medium wherein multi-bit digital information is represented by a shift amount of a pit edge 失效使用信息记录介质的再现装置，其中多位数字信息由凹坑边缘的移位量表示
公开(公告)号：US5818805A
公开(公告)日：1998-10-06
申请号：US544338
申请日：1995-10-17
CPC分类号： G11B20/10037 , G11B20/10 , G11B7/005 , G11B7/24088 , G11B7/0901 , G11B7/0903 , G11B7/0938 , G11B7/24085
摘要： Digital information is recorded with high density. Positions of a leading edge and a trailing edge of an information pit are shifted from a reference position indicated by a leading edge of a reference clock in a step-wise fashion in respond to digital data to be recorded.
摘要翻译： 以高密度记录数字信息。 信息凹坑的前沿和后沿的位置从逐步的方式从基准时钟的前沿指示的参考位置移位，以响应要记录的数字数据。
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公开(公告)号：US20050226138A1
公开(公告)日：2005-10-13
申请号：US11134496
申请日：2005-05-20
IPC分类号： G11B7/24056 , G11B7/2534 , G11B7/2542 , G11B7/256 , G11B7/258 , G11B7/2585 , G11B7/26 , G11B7/24
CPC分类号： G11B7/24056 , G11B7/2534 , G11B7/2542 , G11B7/256 , G11B7/2585 , G11B7/26 , Y10T428/21
摘要： An optical recording medium capable of suppressing warps arising during a long time use and a method of producing the same, which has the configuration of comprising a substrate 13, an optical recording layer 14 formed on the substrate 13 and a light transmitting protective film 17 formed on the optical recording layer 14, wherein the protective film 17 includes a polymer film 16 having a thermal shrinkage coefficient of 0.02% or less and an adhesive layer 15 for adhering the polymer film 16 to the optical recording layer 14. As the polymer film 16, those produced by a melt cast method, subjected to annealing processing in advance or having a residual solvent of 0.3% by weight or less in the film may be preferably used.
摘要翻译： 能够抑制长时间使用时产生的翘曲的光记录介质及其制造方法，其具有包括基板13，形成在基板13上的光记录层14和形成的透光保护膜17的结构 在光记录层14上，其中保护膜17包括热收缩率为0.02％以下的聚合物膜16和用于将聚合物膜16粘合到光学记录层14的粘合剂层15。 作为聚合物膜16，可以优选使用通过熔融流延法制备的那些，预先进行退火处理或在膜中具有0.3重量％以下的残留溶剂。
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27.发明授权公开(公告)号：US06636476B1
公开(公告)日：2003-10-21
申请号：US09219767
申请日：1998-12-23
IPC分类号： G11B370
CPC分类号： G11B23/0021 , G11B7/0956 , G11B7/24 , G11B7/2433 , G11B7/2533 , G11B7/2534 , G11B7/2542 , G11B7/2545 , G11B7/258 , G11B7/263 , G11B2007/24304
摘要： An optical disc includes a substrate, and a recording layer and transparent layer formed in this order on the substrate. A light is incident from the transparent layer to write and/or read an information signal. The substrate comprises a first resin layer forming a surface of the substrate on which the recording layer is formed, and a second resin layer having a higher flexural modulus is formed on the first resin layer.
摘要翻译： 光盘包括基板，以及在基板上依次形成的记录层和透明层。 从透明层入射光以写入和/或读取信息信号。 基板包括形成基板的形成有记录层的表面的第一树脂层，并且在第一树脂层上形成具有较高挠曲模量的第二树脂层。
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28.发明授权Optical disk with information signal representing a character, method and apparatus 失效具有表示字符的信息信号的光盘，方法和装置公开(公告)号：US06580681B1
公开(公告)日：2003-06-17
申请号：US09368012
申请日：1999-08-03
申请人： Toshiyuki Kashiwagi
发明人： Toshiyuki Kashiwagi
IPC分类号： G11B724
摘要： An optical disk has a groove formed in the direction of a recording track and a first information signal is recorded by forming a row of marks or dots on the groove or land. A second information signal can also be recorded on the groove or land without adversely affecting the playback characteristic of the first information signal. A groove is formed in the direction of the recording track and a row of marks or dots corresponding to the first information signal is formed on the groove or land, so that the first information signal can be recorded. Further, by forming a wave having a spatial frequency higher than a cut-off frequency of a playback optical system corresponding to a second information signal on a part or all of the groove, the second information signal is recorded. The second information signal can represent visible information.
摘要翻译： 光盘具有沿记录轨道的方向形成的凹槽，并且通过在凹槽或平台上形成一行标记或点来记录第一信息信号。 第二信息信号也可以被记录在凹槽或平台上，而不会不利地影响第一信息信号的播放特性。 在记录道的方向上形成凹槽，并且在凹槽或平台上形成与第一信息信号相对应的一行标记或点，使得可以记录第一信息信号。 此外，通过在凹槽的一部分或全部上形成具有高于对应于第二信息信号的重放光学系统的截止频率的空间频率的波，记录第二信息信号。 第二信息信号可以表示可见信息。
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29.发明授权公开(公告)号：US06246656B1
公开(公告)日：2001-06-12
申请号：US09063329
申请日：1998-04-20
IPC分类号： G11B724
CPC分类号： G11B7/2578 , G11B7/007 , G11B7/127 , G11B7/1372 , G11B7/24 , G11B7/246 , G11B7/2472 , G11B7/248 , G11B7/2534 , G11B7/2542 , G11B7/2585 , G11B7/2595 , G11B2007/25706 , G11B2007/25708 , G11B2007/2571 , G11B2007/25713 , G11B2007/25715 , G11B2007/25716 , G11B2007/25718
摘要： An optical recording medium is provided which achieves a higher recording capacity. This optical recording medium includes a base formed of thermoplastic resin which has a thickness ranging from between approximately 0.3 to 1.2 mm, a guide groove formed on the base, an information recording layer formed at least of a reflective film and an organic dye recording layer provided on the guide groove, and a light transmissive layer having a thickness ranging from between approximately 3 to 177 &mgr;m. In this optical recording medium, the unevenness &Dgr;t of the thickness of the light transmissive layer is set within the range of: &Dgr;t≦±5.26(&lgr;/N.A.4)(&mgr;m) wherein N.A. represents a numerical aperture of an optical head device of the optical disk recording and/or reproducing apparatus and &lgr; represents the wavelength of laser light utilized by the optical disk recording and/or reproducing apparatus.
摘要翻译： 提供了一种实现更高记录容量的光记录介质。 这种光记录介质包括由热塑性树脂形成的基底，其厚度介于约0.3至1.2mm之间，形成在基底上的引导槽，至少形成反射膜的信息记录层和设置的有机染料记录层 在导向槽上，以及厚度介于约3至177μm之间的透光层。 在该光学记录介质中，透光层厚度的不平坦度DELTAt设定在以下范围内：其中NA表示光盘记录和/或再现装置的光学头装置的数值孔径，而lambd表示波长 由光盘记录和/或再现装置使用的激光。
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公开(公告)号：US06207355B1
公开(公告)日：2001-03-27
申请号：US09206099
申请日：1998-12-04
申请人： Yoshiaki Kato , Toshiyuki Kashiwagi
发明人： Yoshiaki Kato , Toshiyuki Kashiwagi
IPC分类号： G11B7007
CPC分类号： G11B7/261 , G11B7/00718 , G11B7/24038 , Y10S430/146
摘要： An optical recording medium having plural signal recording layers, in which a sufficient signal volume is secured even from the signal recording layer irradiated with the reproducing light beam from the opposite side of a transparent substrate with respect to its signal recording surface. If the recording medium has plural signal recording layers in which a reflective film is formed on a signal recording surface of the transparent substrate carrying crests and valleys, the crests and valleys are formed on each transparent substrates so that the value of asymmetry A1 of reproduced signals in the signal recording layer irradiated with the reproducing light beam from the side of the transparent substrate is substantially equal to the value of asymmetry A2 of reproduced signals in the signal recording layer irradiated with the reproducing light from the opposite side. The length and the width of the crests and valleys of the latter signal recording layer are preferably larger by a film thickness of the reflective film than the length and the width of the crests and valleys of the former signal recording layer.
摘要翻译： 具有多个信号记录层的光记录介质，其中即使从照射有来自透明基板的相反侧的再现光束的信号记录层相对于其信号记录表面确保足够的信号量。 如果记录介质具有多个信号记录层，其中在承载波峰和谷的透明基板的信号记录表面上形成反射膜，则在每个透明基板上形成波峰和谷，使得再现信号的不对称A1的值 在从透明基板一侧照射的再现光束的信号记录层基本上等于从相对侧的再现光照射的信号记录层中的再现信号的不对称性A2的值。 后一信号记录层的波峰和波谷的长度和宽度优选比反射膜的膜厚大于前一个信号记录层的波峰和波谷的长度和宽度。
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