公开(公告)号：EP0978834A2

公开(公告)日：2000-02-09

申请号：EP99115410.5

申请日：1999-08-04

申请人： SONY CORPORATION ,  FUJITSU LIMITED

发明人： Fukushima, Yoshihito ,  Takeuchi, Atsushi ,  Takemoto, Hiroyuki ,  Itoh, Kenichi ,  Moribe, Mineo ,  Numata, Takehiko

IPC分类号： G11B11/105

CPC分类号： G11B11/10584

摘要： On the assumption that a phase difference caused by a birefringence at the substrate is φ br while a one caused by the magneto-optic Kerr effect of the recording layer is φ MO , the magneto-optical recording medium formatted to record information in the groove meets the conditions: -20° br br + φ MO ) br br + φ MO ) br br + φ MO )

摘要翻译： 假设由基片上的双折射引起的相位差为φbr，而由记录层的磁光克尔效应引起的相位差为φMO，格式化成在凹槽中记录信息的磁光记录介质满足条件 ：-20°<φbr<+ 10°和-45°<（φbr+φMO）<+ 15°，格式化为记录信息的磁光记录介质满足条件：-20°<φbr<+10 °和-15°<（φbr+φMO）<+ 45°，并且被格式化以记录信息在槽脊和槽两者处的磁光记录介质满足条件：-20°<φbr<+ 10°和-15° <（φbr+φMO）<+ 15°。

公开(公告)号：EP1188536A3

公开(公告)日：2003-02-12

申请号：EP01307759.9

申请日：2001-09-12

申请人： Sony Corporation

发明人： Fukushima, Yoshihito

IPC分类号： B29C45/26 ,  B29L19/00

CPC分类号： G11B7/263 ,  B29C45/263 ,  B29C2045/2648 ,  Y10S425/81 ,  Y10T428/21 ,  Y10T428/218 ,  Y10T428/219

摘要： In order to prevent a molded disc substrate (2) from generating a separation pattern, a molding die (1) includes a stationary die (6) and a movable die (7), and an outer circumference ring (16) for molding an outer circumference end of the disc substrate (2). The outer circumference ring (16) is so mounted as to be movable along forward and backward directions in parallel with a moving direction of the movable die (7) toward the stationary die (6), and has a retaining surface (39) for retaining the outer circumference of the molded disc substrate (2).

摘要翻译： 为了防止模制光盘从产生分离图案，模塑基板（2）（1）包括一个固定的，所以（6）和一个可移动的，所述（7）中，在外周环（16），用于在外侧成形 盘基片的圆周端部（2）。 外周环（16）被安装成可移动的沿向前和并联向后方向与可动的移动方向中，（7）朝向所述静止时，（6），并且具有用于保持的保持表面（39） 模制的盘基片的外周（2）。

公开(公告)号：EP1188536A2

公开(公告)日：2002-03-20

申请号：EP01307759.9

申请日：2001-09-12

申请人： Sony Corporation

发明人： Fukushima, Yoshihito

IPC分类号： B29C45/26 ,  B29L19/00

CPC分类号： G11B7/263 ,  B29C45/263 ,  B29C2045/2648 ,  Y10S425/81 ,  Y10T428/21 ,  Y10T428/218 ,  Y10T428/219

摘要： In order to prevent a molded disc substrate (2) from generating a separation pattern, a molding die (1) includes a stationary die (6) and a movable die (7), and an outer circumference ring (16) for molding an outer circumference end of the disc substrate (2). The outer circumference ring (16) is so mounted as to be movable along forward and backward directions in parallel with a moving direction of the movable die (7) toward the stationary die (6), and has a retaining surface (39) for retaining the outer circumference of the molded disc substrate (2).

公开(公告)号：EP2068312B1

公开(公告)日：2010-07-28

申请号：EP08253670.7

申请日：2008-11-10

申请人： Sony Corporation

发明人： Kobayashi, Tomio ,  Kudo, Takao ,  Hayashibe, Kazuya ,  Suzuki, Yusuke ,  Kanesaka, Tomoki ,  Fukushima, Yoshihito ,  Uchiyama, Hiroshi

IPC分类号： G11B7/0045 ,  G11B7/24

CPC分类号： G11B7/00452 ,  G11B7/24044 ,  G11B7/245 ,  G11B7/246

公开(公告)号：EP1482330B1

公开(公告)日：2009-03-18

申请号：EP04012621.1

申请日：2004-05-27

申请人： Sony Corporation

发明人： Kobayashi, Tomio ,  Fukushima, Yoshihito ,  Kagawa, Masaki ,  Morisawa, Kazuhiko ,  Koishikawa, Hatsue

IPC分类号： G02B1/04 ,  G02B1/11

CPC分类号： G02B5/3058 ,  G02B1/04 ,  G02B5/305 ,  Y10T428/24479 ,  Y10T428/24942 ,  Y10T428/25 ,  Y10T428/256 ,  Y10T428/31504

公开(公告)号：EP1188536B1

公开(公告)日：2007-06-13

申请号：EP01307759.9

申请日：2001-09-12

申请人： SONY CORPORATION

发明人： Fukushima, Yoshihito

IPC分类号： B29C45/26 ,  B29L19/00

CPC分类号： G11B7/263 ,  B29C45/263 ,  B29C2045/2648 ,  Y10S425/81 ,  Y10T428/21 ,  Y10T428/218 ,  Y10T428/219

公开(公告)号：EP2045802A1

公开(公告)日：2009-04-08

申请号：EP08165471.7

申请日：2008-09-30

申请人： Sony Corporation

发明人： Tanabe, Norihiro ,  Fukushima, Yoshihito

IPC分类号： G11B7/0065 ,  G11B7/007 ,  G11B7/24 ,  G11B7/09

CPC分类号： G11B7/0065 ,  G11B7/00781 ,  G11B7/0938 ,  G11B7/1275 ,  G11B7/24044

摘要： An optical information recording medium includes: a recording area on which an interfering beam formed where a first beam and a second beam whose converging angle is smaller than that of the first beam overlap each other is recorded as a hologram, the first and second beams being emitted from the same light source with the first beam directed to one surface and the second beam directed to the other surface; a first base area that covers the recording area's one surface to which the first beam is emitted, and allows the first beam to pass therethrough; and a second base area that is made thicker than the first base area, covers the recording area's other surface to which the second beam is emitted, and allows the second beam to pass therethrough.

摘要翻译： 一种光学信息记录介质包括：记录区域，其上形成有第一光束和会聚角度小于第一光束的第二光束彼此重叠的第二光束的干涉光束被记录为全息图，第一和第二光束是 从相同的光源发射，第一光束指向一个表面，第二光束指向另一个表面; 第一基底区域，其覆盖记录区域的第一光束发射到的一个表面，并且允许第一光束通过; 以及比所述第一基区厚的第二基区，覆盖所述第二光束射出的所述记录区域的另一个表面，并且允许所述第二光束通过。

公开(公告)号：EP1028420A3

公开(公告)日：2003-06-11

申请号：EP00102389.4

申请日：2000-02-03

申请人： SONY CORPORATION

发明人： Fukushima, Yoshihito ,  Shimizu, Jun ,  Gouko, Takeshi ,  Takeuchi, Atsushi ,  Nakamura, Yuko ,  Iwai, Manabu

IPC分类号： G11B7/24 ,  G11B11/105

CPC分类号： G11B11/10593 ,  G11B11/10515

摘要： A magneto-optical recording medium from which data is read by using a Kerr effect and which is capable of preventing signal imbalance caused from change in birefringence even in a system in which the amplitude of a reproduced signal is small and the spatial frequency of a shortest record signal train of the magneto-optical recording medium is 1.1 × NA/λ (line/m) or higher. The photoelastic coefficient of a substrate of the magneto-optical recording medium is 50 × 10 -13 cm 2 /dyne or smaller. The vertical birefringence of the substrate is 250 × 10 -6 or smaller, the coefficient of water absorption of the same is 0.2 wt% or lower and the thermal coefficient of expansion of the same is 6.5 × 10 -5 cm/cm· °C or lower.

公开(公告)号：EP1028420A2

公开(公告)日：2000-08-16

申请号：EP00102389.4

申请日：2000-02-03

申请人： SONY CORPORATION

发明人： Fukushima, Yoshihito ,  Shimizu, Jun ,  Gouko, Takeshi ,  Takeuchi, Atsushi ,  Nakamura, Yuko ,  Iwai, Manabu

IPC分类号： G11B7/24 ,  G11B7/26

CPC分类号： G11B11/10593 ,  G11B11/10515

摘要： A magneto-optical recording medium from which data is read by using a Kerr effect and which is capable of preventing signal imbalance caused from change in birefringence even in a system in which the amplitude of a reproduced signal is small and the spatial frequency of a shortest record signal train of the magneto-optical recording medium is 1.1 × NA/λ (line/m) or higher. The photoelastic coefficient of a substrate of the magneto-optical recording medium is 50 × 10 -13 cm 2 /dyne or smaller. The vertical birefringence of the substrate is 250 × 10 -6 or smaller, the coefficient of water absorption of the same is 0.2 wt% or lower and the thermal coefficient of expansion of the same is 6.5 × 10 -5 cm/cm· °C or lower.

摘要翻译： 一种磁光记录介质，通过使用克尔效应从该记录介质读取数据，并且即使在再现信号的幅度小而空间频率最短的系统中也能够防止由双折射的变化引起的信号不平衡 磁光记录介质的记录信号串为1.1×NA /λ（线/米）或更高。 磁光记录介质的基板的光弹性系数为50×10-13cm2 /达因或更小。 基材的垂直双折射率为250×10 -6以下，吸水率为0.2重量％以下，热膨胀系数为6.5×10 -5 cm / cm·℃ 或更低。

公开(公告)号：EP2068312A1

公开(公告)日：2009-06-10

申请号：EP08253670.7

申请日：2008-11-10

申请人： Sony Corporation

发明人： Kobayashi, Tomio ,  Kudo, Takao ,  Hayashibe, Kazuya ,  Suzuki, Yusuke ,  Kanesaka, Tomoki ,  Fukushima, Yoshihito ,  Uchiyama, Hiroshi

IPC分类号： G11B7/0045 ,  G11B7/24

CPC分类号： G11B7/00452 ,  G11B7/24044 ,  G11B7/245 ,  G11B7/246

摘要： An optical information recording medium contains a recording layer that includes: a recording area on which a cavity is formed as a recording mark as a result of an increase in temperature around a focal point after absorbing a recording beam converged for recording of information in accordance with the wavelength of the recording beam and from which, when a predetermined reading beam is emitted for reproducing of the information, the information is reproduced based on the optically modulated reading beam; and a non-recording area provided adjacent to the recording area to prevent the heat around the focal point from dispersing.

摘要翻译： 一种光学信息记录介质包含记录层，该记录层包括：记录区域，在该记录区域上形成空腔作为记录标记，作为在吸收记录光束之后焦点周围的温度升高的结果，所述记录光束根据 记录光束的波长，并且当为了再现信息而发射预定的读取光束时，根据光学调制的读取光束来再现信息; 和邻近记录区设置的非记录区，以防止焦点周围的热量散开。