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    Multi-layer recording medium and method for producing same
    1.
    发明授权
    Multi-layer recording medium and method for producing same 失效
    多层记录介质及其制造方法

    公开(公告)号：US06270611B1

    公开(公告)日：2001-08-07

    申请号：US08978570

    申请日：1997-11-26

    申请人： Hiroshi Ohki ,  Toshiyuki Kashiwagi ,  Motohiro Furuki

    发明人： Hiroshi Ohki ,  Toshiyuki Kashiwagi ,  Motohiro Furuki

    IPC分类号： B32B3112

    CPC分类号： G11B7/26 ,  B29D17/005 ,  G11B7/24 ,  Y10T156/1041

    摘要： A multi-layer recording medium including a light-transmitting substrate, a first information recording layer formed on the substrate, an intermediate layer at least part of which is formed of a photo-curable resin film, and which is formed on the first information recording layer, a second information recording layer formed on a surface of the intermediate layer opposite to the surface facing the first information signal layer, and a protective layer formed on the second information signal layer. A method for producing such multi-layer recording medium is also disclosed.

    摘要翻译： 一种多层记录介质，包括透光基板，形成在基板上的第一信息记录层，其至少一部分由光固化树脂膜形成的中间层，并且形成在第一信息记录 层，形成在与面向第一信息信号层的表面相对的中间层的表面上的第二信息记录层，以及形成在第二信息信号层上的保护层。 还公开了一种用于制造这种多层记录介质的方法。

    Multi-layer recording medium and method for producing same
    2.
    发明授权
    Multi-layer recording medium and method for producing same 失效
    多层记录介质及其制造方法

    公开(公告)号：US5708652A

    公开(公告)日：1998-01-13

    申请号：US607760

    申请日：1996-02-27

    申请人： Hiroshi Ohki ,  Toshiyuki Kashiwagi ,  Motohiro Furuki

    发明人： Hiroshi Ohki ,  Toshiyuki Kashiwagi ,  Motohiro Furuki

    IPC分类号： B29D17/00 ,  G11B7/24 ,  G11B7/26

    CPC分类号： G11B7/26 ,  B29D17/005 ,  G11B7/24 ,  Y10T156/1041

    摘要： A multi-layer recording medium including a light-transmitting substrate, a first information recording layer formed on the substrate, an intermediate layer at least part of which is formed of a photo-curable resin film, and which is formed on the first information recording layer, a second information recording layer formed on a surface of the intermediate layer opposite to the surface facing the first information signal layer, and a protective layer formed on the second information signal layer. A method for producing such multi-layer recording medium is also disclosed.

    摘要翻译： 一种多层记录介质，包括透光基板，形成在基板上的第一信息记录层，其至少一部分由光固化树脂膜形成的中间层，并且形成在第一信息记录 层，形成在与面向第一信息信号层的表面相对的中间层的表面上的第二信息记录层，以及形成在第二信息信号层上的保护层。 还公开了一种用于制造这种多层记录介质的方法。

    Disk-like multilayer information recording medium and production method thereof
    4.
    发明授权
    Disk-like multilayer information recording medium and production method thereof 失效
    盘状多层信息记录介质及其制造方法

    公开(公告)号：US06663935B1

    公开(公告)日：2003-12-16

    申请号：US09743829

    申请日：2001-05-11

    申请人： Toshiyuki Kashiwagi ,  Takeshi Yamasaki ,  Motohiro Furuki ,  Tomomi Yukumoto

    发明人： Toshiyuki Kashiwagi ,  Takeshi Yamasaki ,  Motohiro Furuki ,  Tomomi Yukumoto

    IPC分类号： G11B566

    CPC分类号： B29C59/026 ,  B29C59/04 ,  B29C2035/0827 ,  B29L2017/003 ,  G11B7/24 ,  G11B7/26 ,  Y10S428/90

    摘要： The present invention relates to a multi-layered disc-shaped information recording medium having a plurality of signal recording layers each carrying information signals. In preparing the recording medium, a first substrate obtained on punching a sheet obtained in turn by having a signal recording pattern transcribed on it from a first stamper and by forming a semi-transparent film on a signal surface is bonded to a second substrate obtained on injection molding a synthetic resin material. The second substrate is prepared by having transcribed to it a signal recording pattern formed on a second stamper provided on an injection molding device. A reflective film is formed on a signal surface having the transcribed second substrate. The first and second substrates are bonded together on their signal recording layers by a transparent adherent layer.

    摘要翻译： 本发明涉及具有多个信号记录层的多层盘形信息记录介质，每个信号记录层都携带信息信号。 在制备记录介质时，通过在第一压模上转印有信号记录图案并在信号表面上形成半透明膜而依次冲压得到的片材获得的第一衬底被接合到在 注塑成型合成树脂材料。 通过将第二基板转印到形成在设置在注射成型装置上的第二压模上的信号记录图案来制备。 在具有转录的第二基板的信号表面上形成反射膜。 第一和第二衬底通过透明粘附层在它们的信号记录层上结合在一起。

    Optical recording medium, optical recording and reproducing apparatus using the same and manufacturing method of optical recording medium
    5.
    发明授权
    Optical recording medium, optical recording and reproducing apparatus using the same and manufacturing method of optical recording medium 有权
    光记录介质，使用其的光记录和再现装置以及光记录介质的制造方法

    公开(公告)号：US06242066B1

    公开(公告)日：2001-06-05

    申请号：US09334665

    申请日：1999-06-17

    申请人： Takeshi Yamasaki ,  Tomomi Yukumoto ,  Motohiro Furuki ,  Toshiyuki Kashiwagi

    发明人： Takeshi Yamasaki ,  Tomomi Yukumoto ,  Motohiro Furuki ,  Toshiyuki Kashiwagi

    IPC分类号： B32B302

    CPC分类号： G11B7/24 ,  G11B7/26 ,  Y10S428/913 ,  Y10S430/146 ,  Y10T428/21 ,  Y10T428/31678

    摘要： Such an optical recording medium is disclosed that includes at least one layer of an information layer (11) for which at least any of an optical recording or reproducing is performed with an optical parameter of N.A. (numerical aperture)/&lgr;(wavelength)≧1.2[&mgr;m−1], and in at least its information signal area, its focus error amount is equal to or less than ±&lgr;/(N.A.)2/8 in a band equal to or more than a focus servo cut-off frequency of an optical recording and reproducing apparatus which performs at least any of the optical recording or reproducing while within ±&lgr;/(N.A.)2/4 when only the reproduction is performed.

    摘要翻译： 公开了这样的光学记录介质，其包括信息层（11）的至少一层，其中进行光学记录或再现中的至少任一个具有NA（数值孔径）/羔羊（波长）= 1的光学参数 1.2 [mum-1]，并且在至少其信息信号区域中，其聚焦误差量在等于或大于聚焦伺服截止频率的频带中等于或小于±lambd /（NA）2/8 当仅进行再现时，在±lambd /（NA）2/4内执行至少任何光学记录或再现的光学记录和再现装置。

    Optical disc
    7.
    发明授权
    Optical disc 有权
    光盘

    公开(公告)号：US06440516B1

    公开(公告)日：2002-08-27

    申请号：US09482913

    申请日：2000-01-14

    申请人： Takeshi Yamasaki ,  Tomomi Yukumoto ,  Motohiro Furuki ,  Toshiyuki Kashiwagi

    发明人： Takeshi Yamasaki ,  Tomomi Yukumoto ,  Motohiro Furuki ,  Toshiyuki Kashiwagi

    IPC分类号： B32B302

    CPC分类号： G11B7/252 ,  G11B7/24056 ,  G11B7/2531 ,  G11B7/2532 ,  G11B7/2533 ,  G11B7/256 ,  G11B7/26 ,  Y10T428/21

    摘要： An optical disc having a light transmitting layer of a reduced uniform thickness. The optical disc has a transparent film bonded via a pressure-sensitive adhesive sheet or a dry photopolymer sheet on a substrate to serve as a light transmitting layer. The signal recording surface is formed on the substrate and/or the transparent film. The light transmitting layer may be constituted solely by a pressure-sensitive adhesive sheet or a dry photopolymer sheet. In the present optical disc, recording and/or reproduction is performed from the light transmitting layer with respect to the signal recording surface. The pressure-sensitive adhesive sheet or the dry photopolymer sheet is itself in a sheet form and is previously formed into a layer (sheet) of a pre-set thickness, in a manner different from the case in which a UV light curable resin is coated on a substrate. The light transmitting layer of an extremely thin film thickness and devoid of sporadic film thickness variations can easily be formed by using the sheet as an adhesive layer or a light transmitting layer itself.

    摘要翻译： 一种具有均匀厚度均匀的透光层的光盘。 光盘具有通过压敏粘合片或基片上的干燥光聚合物片粘合的透明膜，以作为透光层。 信号记录表面形成在基板和/或透明膜上。 透光层可以仅由压敏粘合片或干燥的光聚合物片构成。 在本光盘中，从光透射层相对于信号记录表面进行记录和/或再现。 压敏粘合片或干燥的光聚合物片本身是片状的，并且预先形成为预定厚度的层（片），其方式不同于涂覆UV光固化树脂的情况 在基板上。 通过使用片材作为粘合剂层或透光层本身，可以容易地形成非常薄的膜厚并且没有散发性膜厚变化的透光层。

    Optical disc and method for manufacturing same
    8.
    发明授权
    Optical disc and method for manufacturing same 有权
    光盘及其制造方法

    公开(公告)号：US06349086B2

    公开(公告)日：2002-02-19

    申请号：US09226701

    申请日：1999-01-07

    申请人： Masato Nishida ,  Tetsuhiro Sakamoto ,  Toshiyuki Kashiwagi ,  Motohiro Furuki

    发明人： Masato Nishida ,  Tetsuhiro Sakamoto ,  Toshiyuki Kashiwagi ,  Motohiro Furuki

    IPC分类号： G11B370

    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.

    摘要翻译： 一种光盘及其制造方法，其中可以禁止在盘的外缘区域上形成隆起，以确保光盘的光透射层的最佳表面特性有助于进一步提高记录容量。 在光盘1的基板2上顺序地形成有记录部6和透光层5.光落在透光层5上，以记录和/或再现基板2的信号记录区域6a的信息信号 选择从基板2的最外边缘到信号记录区域6a的径向距离D大于形成在透光层5的外缘上的隆起部5a的径向宽度L.隆起部5a具有 从透光层5的表面的高度h不大于70μm。