公开(公告)号：US5716761A

公开(公告)日：1998-02-10

申请号：US697833

申请日：1996-08-28

申请人： Tetsuya Iida ,  Takanobu Higuchi ,  Keiji Suga

发明人： Tetsuya Iida ,  Takanobu Higuchi ,  Keiji Suga

IPC分类号： B29C35/08 ,  B29C41/22 ,  B29D17/00 ,  G11B7/24 ,  G11B7/253 ,  G11B7/26

CPC分类号： G11B7/2535 ,  B29C41/22 ,  B29D17/005 ,  G11B7/24 ,  G11B7/2532 ,  G11B7/2533 ,  G11B7/2534 ,  G11B7/2536 ,  G11B7/258 ,  G11B7/2585 ,  G11B7/259 ,  G11B7/2595 ,  G11B7/26 ,  B29C35/08 ,  Y10S430/146

摘要： A method for manufacturing a double-sided-multi-layered optical disc. An intermediate substrate having pits on both the major surfaces is previously prepared as well as first and second substrates. The method rotates the first substrate, the intermediate substrate and the second substrate with respect to the common center thereof so as to form unhardened radiation setting resin layers between adjacent substrates so that thicknesses of the unhardened resin layers are adjusted to predetermined values, and then the method irradiates a radiation onto the unhardened resin layer so as to harden the unhardened resin layers to solid resin layers.

摘要翻译： 一种双面多层光盘的制造方法。 预先制备在两个主表面上具有凹坑的中间基底以及第一和第二基底。 该方法使第一基板，中间基板和第二基板相对于其共同的中心旋转，以在相邻的基板之间形成未硬化的辐射设定树脂层，使得未硬化的树脂层的厚度被调节到预定值，然后 方法将辐射照射到未硬化的树脂层上，以将未硬化的树脂层硬化成固体树脂层。

公开(公告)号：US06464485B1

公开(公告)日：2002-10-15

申请号：US09599615

申请日：2000-06-23

申请人： Tetsuya Iida ,  Noriyoshi Shida ,  Keiji Suga ,  Kenichi Ishiguro ,  Yasunobu Higashika ,  Atsushi Sato ,  Kunitoshi Katagiri

发明人： Tetsuya Iida ,  Noriyoshi Shida ,  Keiji Suga ,  Kenichi Ishiguro ,  Yasunobu Higashika ,  Atsushi Sato ,  Kunitoshi Katagiri

IPC分类号： B29D1700

CPC分类号： B29C45/263 ,  B29C45/568 ,  B29D17/005 ,  Y10S425/81

摘要： An ultrasonic injection mold for an optical disk includes a movable die and a fixed die; a disk molding cavity formed between the movable die and the fixed die; a stamper positioned at the bottom of the cavity for forming a pit on a surface of the disk; and an ultrasonic generation device provided on the movable die or fixed die for applying ultrasonic waves to the cavity in performing infection molding. One or more slits are formed on the movable die and the fixed die in the direction which crosses the radial direction of the cavity. The ultrasonic injection mold minimizes the amplitude of the ultrasonic transmitted in the radial direction of the cavity.

摘要翻译： 一种用于光盘的超声注射模具包括可动模和固定模; 形成在可动模和固定模之间的盘模腔; 位于所述腔的底部的压模，用于在所述盘的表面上形成凹坑; 以及设置在可动模具或固定模具上的超声波产生装置，用于在进行感染模塑时向腔体施加超声波。 在可动模具和固定模具上沿与空腔的径向交叉的方向形成一个或多个狭缝。 超声波注射模具使得在空腔的径向方向上传递的超声波的振幅最小化。

公开(公告)号：US06656560B2

公开(公告)日：2003-12-02

申请号：US09948785

申请日：2001-09-10

申请人： Kaoru Yamamoto ,  Keiji Suga ,  Noriyoshi Shida ,  Tetsuya Iida

发明人： Kaoru Yamamoto ,  Keiji Suga ,  Noriyoshi Shida ,  Tetsuya Iida

IPC分类号： B29D1700

CPC分类号： G11B7/26 ,  G11B7/00745 ,  Y10S425/81

摘要： Preformatted areas in at least the most distal recording layer from an object lens among a plurality of recording layers in an optical disc include guard areas at both ends of the respective recording layer in the tracing direction. No data is recorded on the guard areas. The guard area length GL is determined to satisfy the following formula: GL≧YL+T×(NA/n)/[1−(NA/n)2]1/2 where YL is a maximum allowable value of position deviation between the preformatted areas in the most distal recording layer and in another recording layer in the tracing direction; NA is the numerical aperture of the object lens; T is a distance between the most distal and the another recording layer; and “n” is an refraction index of a medium between the most distal and the another recording layers.

摘要翻译： 在光盘中的多个记录层中，来自物镜的至少最远端的记录层中的预格式化区域包括在跟踪方向上的各个记录层的两端的保护区域。 防护区域上没有记录数据。 保护区域长度GL被确定为满足以下公式：其中YL是最远端记录层中的预格式化区域和跟踪方向上的另一记录层之间的位置偏差的最大允许值; NA是物镜的数值孔径; T是最远端和另一记录层之间的距离; “n”是最远端和另一个记录层之间介质的折射率。

公开(公告)号：US07006427B2

公开(公告)日：2006-02-28

申请号：US10674461

申请日：2003-10-01

申请人： Kaoru Yamamoto ,  Keiji Suga ,  Noriyoshi Shida ,  Tetsuya Iida

发明人： Kaoru Yamamoto ,  Keiji Suga ,  Noriyoshi Shida ,  Tetsuya Iida

IPC分类号： G11B7/24

CPC分类号： G11B7/26 ,  G11B7/00745 ,  Y10S425/81

摘要： Preformatted areas in at least the most distal recording layer from an object lens among a plurality of recording layers in an optical disc include guard areas at both ends of the respective recording layer in the tracing direction. No data is recorded on the guard areas. The guard area length GL is determined to satisfy the following formula: GL≧YL+T×(NA/n)/[1−(NA/n)2]1/2 where YL is a maximum allowable value of position deviation between the preformatted areas in the most distal recording layer and in another recording layer in the tracing direction; NA is the numerical aperture of the object lens; T is a distance between the most distal and the another recording layer; and “n” is an refraction index of a medium between the most distal and the another recording layers.

摘要翻译： 在光盘中的多个记录层中，来自物镜的至少最远端的记录层中的预格式化区域包括在跟踪方向上的各个记录层的两端的保护区域。 防区没有数据记录。 保护区域长度GL被确定为满足以下形式

公开(公告)号：US06478570B1

公开(公告)日：2002-11-12

申请号：US09650191

申请日：2000-08-29

申请人： Keiji Suga ,  Noriyoshi Shida ,  Tetsuya Imai ,  Tetsuya Iida

发明人： Keiji Suga ,  Noriyoshi Shida ,  Tetsuya Imai ,  Tetsuya Iida

IPC分类号： B29C4573

CPC分类号： B29C45/2642 ,  B29C45/7312 ,  B29L2017/005 ,  Y10S425/81

摘要： There are provided a disc-manufacturing mold capable of manufacturing a disc substrate having no irregularities in thickness in its circumferential direction and a disc manufacturing apparatus using the mold. The disc-manufacturing mold is used for forming a disc substrate by injection molding. A cooling water ditch is arranged on the mold. The cooling water ditch is configured such that a disc distorts substantially evenly in its circumferential direction when the disc is manufactured.

摘要翻译： 提供一种盘制造模具，其能够制造圆周方向上没有不规则凹凸的盘基片和使用该模具的圆盘制造装置。 盘制造模具用于通过注射成型形成盘基片。 冷却水沟设在模具上。 冷却水沟被构造成使得当制造盘时盘在其圆周方向上基本上均匀地变形。

公开(公告)号：US06881051B2

公开(公告)日：2005-04-19

申请号：US09810228

申请日：2001-03-19

申请人： Noriyoshi Shida ,  Keiji Suga ,  Tetsuya Imai

发明人： Noriyoshi Shida ,  Keiji Suga ,  Tetsuya Imai

IPC分类号： B29C45/26 ,  B29C45/27 ,  B29C45/73 ,  G11B7/26 ,  B29C45/20

CPC分类号： B29C45/27 ,  B29C45/263 ,  B29C2045/2766 ,  B29L2017/005 ,  Y10S425/81

摘要： A conduction member having conduction path for injecting molten molding material within a mold space is fitted to one of a pair of mold bodies which form the disc-shaped mold space. A first heat suppressing member for suppressing heat within the conduction path from being transmitted to the one of the mold bodies is disposed between the conduction member and the one of the mold bodies. Further, a second heat suppressing member is disposed at a position opposite to the first heat suppressing member at the time of mold-clamping the pair of the mold bodies.

摘要翻译： 具有用于在模具空间内注入熔融成型材料的导电路径的导电构件安装在形成盘状模具空间的一对模具体中的一个上。 用于抑制传导路径内的热量传播到一个模具体的第一抑制部件设置在导电部件和一个模具体之间。 此外，在对一对模具体进行夹紧时，第二抑制构件配置在与第一抑制构件相反的位置。

公开(公告)号：US06770162B2

公开(公告)日：2004-08-03

申请号：US09961167

申请日：2001-09-24

申请人： Noriyoshi Shida ,  Keiji Suga

发明人： Noriyoshi Shida ,  Keiji Suga

IPC分类号： B44C1165

CPC分类号： G11B7/26 ,  B29C65/76 ,  B29C65/78 ,  B29C65/7802 ,  B29C65/7811 ,  B29C65/7841 ,  B29C65/7855 ,  B29C66/1122 ,  B29C66/452 ,  B29C66/472 ,  B29C66/71 ,  B29L2017/005 ,  B29C65/00 ,  B29K2069/00

摘要： In case of manufacturing a disk having a two-layer structure, a glass substrate 13 is bonded to a cover layer 11 through an adhesive layer 12, and a mount hole 14a is formed in a center thereof to form a bonded substrate 14 having a three-layer structure (a). In a state where a stamper 15 formed a predetermined pit pattern is set to a center boss 16, the bonded substrate 14 is pressed downward in a vertical direction while the mount hole 14a of the bonded substrate 14 is aligned with the center boss 16(b). Whereby an information recording surface 11a is transferred onto the cover layer 11(c). Subsequently, after the bonded substrate 14 has been bonded to another layer substrate of the disk, the adhesive layer 12 is removed to separate the glass substrate 13. Finally, there is manufactured the disk having the two-layer structure.

摘要翻译： 在制造具有双层结构的盘的情况下，玻璃基板13通过粘合层12与覆盖层11接合，并且在其中央形成安装孔14a，以形成具有三层结构的接合基板14 层结构（a）。 在形成预定凹坑图案的压模15被设置到中心凸台16的状态下，键合衬底14沿垂直方向向下压，同时键合衬底14的安装孔14a与中心凸台16（b ）。 由此将信息记录表面11a转印到覆盖层11（c）上。 随后，在键合衬底14已经结合到盘的另一层衬底之后，去除粘合剂层12以分离玻璃衬底13.最后，制造具有两层结构的盘。