公开(公告)号：US20110258653A1

公开(公告)日：2011-10-20

申请号：US13082564

申请日：2011-04-08

申请人： Tetsuhiro Sakamoto

发明人： Tetsuhiro Sakamoto

IPC分类号： G11B7/24

CPC分类号： G11B7/24038

摘要： A multilayer optical recording medium includes a plurality of interfacial surfaces that reflect an incident light beam, and neighboring ones of the interfacial surfaces has a spacer therebetween. When a light incident surface side is defined as an upper surface side, a different thickness layer unit including the spacers having different thicknesses arranged sequentially is disposed on the lowermost layer side, and the spacers each having a thickness different from the thickness of any one of the spacers arranged in the different thickness layer unit are sequentially arranged above the different thickness layer unit.

摘要翻译： 多层光学记录介质包括反射入射光束的多个界面，并且相邻的界面具有间隔物。 当光入射面侧被定义为上表面侧时，在最下层侧设置包括依次布置的具有不同厚度的间隔物的不同厚度层单元，并且每个间隔物的厚度不同于 布置在不同厚度层单元中的间隔件依次布置在不同厚度层单元的上方。

公开(公告)号：US07843796B2

公开(公告)日：2010-11-30

申请号：US11748739

申请日：2007-05-15

申请人： Tetsuhiro Sakamoto ,  Jun Nakano ,  Yuki Tauchi ,  Junichi Nakai

发明人： Tetsuhiro Sakamoto ,  Jun Nakano ,  Yuki Tauchi ,  Junichi Nakai

IPC分类号： G11B7/24

CPC分类号： G11B7/00736 ,  G11B7/259

摘要： An optical information recording medium includes a read-only information recording portion, and a BCA (Burst Cutting Area) portion formed by laser marking. A reflective film on an information recording surface of the read-only information recording portion and a reflective film on the BCA portion are formed of the same material. The reflective film includes Ag as a main component, and at least one of Nd and Gd, and at least one of Sn and In as components; the reflective film including at least one of Nd and Gd of 0.1 atom % or more and 3.0 atom % or less in total and at least one of Sn and In of 3 atom % or more and 12 atom % or less in total. Recorded information is reproduced from the information recording surface of the read-only information recording portion and a BCA signal is reproduced from the BCA portion, using blue-violet laser reproducing light.

摘要翻译： 光学信息记录介质包括只读信息记录部分和通过激光打标形成的BCA（突发切割区域）部分。 只读信息记录部分的信息记录表面上的反射膜和BCA部分上的反射膜由相同的材料形成。 反射膜包括Ag作为主要成分，并且Nd和Gd中的至少一种以及Sn和In中的至少一种作为组分; 所述反射膜包括总共为0.1原子％以上且3.0原子％以下的Nd和Gd中的至少一种，Sn和In中的至少一种为3原子％以上且12原子％以下。 记录的信息从只读信息记录部分的信息记录表面再现，并且使用蓝紫激光再现光从BCA部分再现BCA信号。

公开(公告)号：US20090252914A1

公开(公告)日：2009-10-08

申请号：US12303408

申请日：2007-06-15

申请人： Tetsuhiro Sakamoto ,  Jun Nakano ,  Naoki Okawa ,  Junichi Nakai ,  Yuki Tauchi

发明人： Tetsuhiro Sakamoto ,  Jun Nakano ,  Naoki Okawa ,  Junichi Nakai ,  Yuki Tauchi

IPC分类号： G11B7/26 ,  G11B7/258

CPC分类号： G11B7/259 ,  G11B7/00736 ,  Y10T428/21

摘要： A pirated optical recording medium may be determined which is produced by physically transferring a shape of pits and lands formed on a substrate of an optical recording medium. The optical recording medium is provided with excellent weatherability and long-term storage reliability. A reflective film formed of an Ag alloy film of Ag100-x-yXxCuy, where X is at least one element among Ti, W, Ta, V, Mo, Nb and Zr, is formed on a substrate on which main data is recorded with a combination of pits and lands. A mark may be formed so that a reproduction signal level in the recorded mark of auxiliary data write once recorded on the reflective film is increased, and a reproduction signal level is decreased in an optical recording medium prepared by physically transferring the surface shape of the pits and lands of the substrate. A pirated optical recording medium may be determined in this manner.

摘要翻译： 可以确定通过物理转移形成在光记录介质的基板上的凹坑和平台的形状而产生的盗版光学记录介质。 光学记录介质具有优良的耐候性和长期的存储可靠性。 由Ag100-x-yXxCuy的Ag合金膜形成的反射膜，其中X是Ti，W，Ta，V，Mo，Nb和Zr中的至少一种元素，在其上记录有主数据的基板上形成 坑和土地的组合。 可以形成标记，使得一旦记录在反射膜上的辅助数据的记录标记中的再现信号电平增加，并且通过物理地转移凹坑的表面形状而制备的光学记录介质中再现信号电平降低 和基底的区域。 可以以这种方式确定盗版光学记录介质。

公开(公告)号：US07423939B2

公开(公告)日：2008-09-09

申请号：US10779337

申请日：2004-02-13

申请人： Takeshi Miki ,  Kazuhiko Fujiie ,  Yasuhito Tanaka ,  Goro Fujita ,  Tetsuhiro Sakamoto

发明人： Takeshi Miki ,  Kazuhiko Fujiie ,  Yasuhito Tanaka ,  Goro Fujita ,  Tetsuhiro Sakamoto

IPC分类号： G11B11/00 ,  C23C14/35 ,  C23C16/00

CPC分类号： G11B11/10582 ,  G11B11/10517 ,  G11B11/10584

摘要： A method for manufacturing a magneto-optical recording medium in which reading of recorded information is performed through domain wall displacement in a reproduction layer is provided, in which magnetic separation of groove side-wall portions is performed more reliably; as a result a magneto-optical recording medium with satisfactory recording and reproduction characteristics can be provided. The method is to manufacture a magneto-optical recording medium in which on a substrate 1 having grooves 12 at least a reproduction layer and a recording layer, each of which is formed of magnetic layers, are deposited and recorded information is reproduced through domain wall displacement in the reproduction layer; and the method includes a first annealing process in which, after depositing at least the reproduction layer and recording layer on the substrate 1 on which are formed lands 11 and grooves 12, only side-wall portions 13 between adjacent lands 11 and grooves 12 are irradiated with laser light L1, and a second magnetization annealing process in which regions including adjacent side-wall portions 13 and lands between side-wall portions 13 are irradiated with laser light L2 having a spot diameter greater than the spot diameter of the laser light in the first annealing process, while applying an external magnetic field Hex.

摘要翻译： 提供了一种制造磁光记录介质的方法，其中通过再现层中的畴壁位移进行记录信息的读取，其中槽侧壁部分的磁分离更可靠地进行; 结果，可以提供具有令人满意的记录和再现特性的磁光记录介质。 该方法是制造磁光记录介质，其中在至少具有由磁层形成的再生层和记录层的凹槽12的基板1上沉积，并通过畴壁位移再现记录信息 在复制层; 并且该方法包括第一退火处理，其中在至少将再生层和记录层沉积在其上形成有焊盘11和凹槽12的基板1上之后，仅在相邻焊盘11和槽12之间照射侧壁部分13 激光L 1和第二磁化退火处理，其中包括相邻的侧壁部分13和侧壁部分13之间的区域的区域被照射具有大于激光的光斑直径的光点直径的激光L 2 在第一退火过程中，同时施加外部磁场H 。

公开(公告)号：US20070141296A1

公开(公告)日：2007-06-21

申请号：US11612791

申请日：2006-12-19

申请人： Jun Nakano ,  Tetsuhiro Sakamoto ,  Junichi Nakai ,  Yuki Tauchi

发明人： Jun Nakano ,  Tetsuhiro Sakamoto ,  Junichi Nakai ,  Yuki Tauchi

IPC分类号： B32B3/02

CPC分类号： B32B15/08 ,  B32B7/12 ,  B32B27/08 ,  B32B27/26 ,  B32B27/365 ,  B32B2255/10 ,  B32B2255/205 ,  B32B2307/416 ,  B32B2307/714 ,  B32B2429/02 ,  C22C5/06 ,  C23C14/205 ,  Y10T428/21

摘要： The invention relates to an Ag alloy reflective film for an optical information recording medium, including Ag as a main component, at least one kind of Nd, Gd, Y and Sm in a total amount of more than 0.1 atomic percent and not more than 3.0 atomic percent and at least one kind of W, Mo, V, Zr, Nb and Cr in a total amount of 3.0 to 10.0 atomic percent; an Ag alloy reflective film for an optical information recording medium, including Ag as a main component, at least one kind of Nd, Gd, Y and Sm in a total amount of more than 0.1 atomic percent and not more than 3.0 atomic percent and at least one kind of Ti and Ta in a total amount of 5.0 to 10.0 atomic percent; an optical information recording medium including the Ag alloy reflective film; and an Ag alloy sputtering target having a composition same as that of the Ag alloy reflective film.

摘要翻译： 本发明涉及一种用于光学信息记录介质的Ag合金反射膜，其包括Ag作为主要成分，至少一种Nd，Gd，Y和Sm的总量大于0.1原子％且不大于3.0 原子百分比和至少一种W，Mo，V，Zr，Nb和Cr，总量为3.0至10.0原子％; 用于光学信息记录介质的Ag合金反射膜，包括Ag作为主要成分，Nd，Gd，Y和Sm中的至少一种总量超过0.1原子％且不大于3.0原子％，并且在 总计为5.0〜10.0原子％的Ti和Ta中的至少一种; 包括Ag合金反射膜的光学信息记录介质; 以及具有与Ag合金反射膜相同的组成的Ag合金溅射靶。

公开(公告)号：US07060373B2

公开(公告)日：2006-06-13

申请号：US10765601

申请日：2004-01-27

申请人： Tetsuhiro Sakamoto ,  Kazutomo Miyata ,  Teruyuki Ota ,  Makoto Watanabe ,  Yasuhito Tanaka ,  Goro Fujita ,  Takeshi Miki ,  Kazuhiko Fujiie

发明人： Tetsuhiro Sakamoto ,  Kazutomo Miyata ,  Teruyuki Ota ,  Makoto Watanabe ,  Yasuhito Tanaka ,  Goro Fujita ,  Takeshi Miki ,  Kazuhiko Fujiie

IPC分类号： G11B11/105

CPC分类号： G11B11/10584 ,  G11B11/10515 ,  G11B11/10593

摘要： A magneto-optical recording medium includes a first magnetic layer (reproduction layer), a second magnetic layer (control layer), a third magnetic layer (blocking layer), and a fourth magnetic layer (recording layer) having respective Curie temperatures TC1, TC2, TC3 and TC4. The Curie temperatures of the layers satisfy the relationships TC1>TC3>TC2 and TC4>TC3. In addition, the magnetic anisotropy of the third magnetic layer Ku3 is greater than that of the second magnetic layer Ku2. A magnetic domain wall in the first magnetic layer in front of the spot irradiated by the reproduction light in the direction of travel is displaced toward the peak temperature portion so that a recorded domain is expanded. Displacement in the spot direction of a domain wall in the first magnetic layer behind the reproduction light spot in the direction of travel is suppressed. The second and third magnetic layers control the magnetic exchange coupling between the first and fourth magnetic layers.

摘要翻译： 磁光记录介质包括具有各自的居里温度T 。 此外，第三磁性层K Sub3的磁各向异性大于第二磁性层K Sub2的磁各向异性。 由再生光在行进方向上照射的光斑前面的第一磁性层中的磁畴壁朝向峰值温度部位移位，使得记录域扩大。 抑制了在再生光点的行进方向后面的第一磁性层中的畴壁的光斑方向的位移。 第二和第三磁性层控制第一和第四磁性层之间的磁交换耦合。

公开(公告)号：US20050041537A1

公开(公告)日：2005-02-24

申请号：US10834196

申请日：2004-04-29

申请人： Yasuhito Tanaka ,  Kazuhiko Fujiie ,  Goro Fujita ,  Tetsuhiro Sakamoto ,  Takeshi Miki

发明人： Yasuhito Tanaka ,  Kazuhiko Fujiie ,  Goro Fujita ,  Tetsuhiro Sakamoto ,  Takeshi Miki

IPC分类号： G11B7/007 ,  G11B7/09 ,  G11B11/105 ,  G11B11/00 ,  G11B7/00

CPC分类号： G11B11/10595 ,  G11B7/00736 ,  G11B7/094 ,  G11B7/0945 ,  G11B11/10576

摘要： An optical head is used to record and playback information to and from a magneto-optical storage medium having a displacement layer, a disconnecting layer, and a recording layer that are stacked in this order. The displacement layer is defined by a perpendicular magnetic film that is relatively smaller in domain-wall coercivity and that is greater in domain-wall mobility than the recording layer and the disconnecting layer is defined by a magnetic layer that is lower in Curie temperature than the displacement layer and the recording layer. An optimum offset value is set for causing tracking of the optical head to a recording track provided on the magneto-optical storage medium.

摘要翻译： 光头用于向具有层叠的位移层，隔离层和记录层的磁光存储介质记录和重放信息。 位移层由畴壁矫顽力相对较小的垂直磁性膜定义，并且在畴壁迁移率方面比记录层更大，并且断开层由居里温度较低的磁性层限定 位移层和记录层。 设置最佳偏移值以使光头跟踪到设置在磁光存储介质上的记录轨道。

公开(公告)号：US06751166B2

公开(公告)日：2004-06-15

申请号：US10005607

申请日：2001-12-07

申请人： Goro Fujita ,  Tetsuhiro Sakamoto ,  Minoru Tobita

发明人： Goro Fujita ,  Tetsuhiro Sakamoto ,  Minoru Tobita

IPC分类号： G11B1100

CPC分类号： G11B11/10515 ,  G11B11/1053 ,  G11B11/10595 ,  G11B20/10009

摘要： A phase error detection apparatus and method is disclosed whereby a data signal is played back at a high S/N ratio from a magneto-optical disk making use of a ghost signal by magnetic domain wall displacement detection while the playback laser poser is kept at an optimum level. First, the laser power is controlled so that the time delay of a ghost signal from a data signal may be equal to a fixed multiple of a data detection clock. Thereupon, a laser power control section searches for a point at which the amount of jitters generated is small based on a RF signal. Then, the playback laser power is adjusted so that the time delay amount of the ghost signal from the data signal may be the fixed multiple n=5 of the clock nearest to the phase delay amount set in advance of a ghost which appears in the isothermal region with a laser power with which an optimum signal characteristic is obtained. In this instance, the laser power control section searches for a peak of the 5T amplitude of the displacement phase difference controlling pattern.

摘要翻译： 公开了一种相位误差检测装置和方法，其中数据信号以高S / N比从使用鬼影信号的磁光盘通过磁畴壁位移检测重放，而播放激光器位置保持在 最佳水平。 首先，控制激光功率，使得来自数据信号的重影信号的时间延迟可以等于数据检测时钟的固定倍数。 因此，激光功率控制部基于RF信号来搜索生成的抖动量小的点。 然后，调整重放激光功率，使得来自数据信号的重影信号的时间延迟量可以是最接近出现在等温中的重影之前设置的相位延迟量的时钟的固定倍数n = 5 具有获得最佳信号特性的激光功率的区域。 在这种情况下，激光功率控制部分搜索位移相位差控制模式的5T振幅的峰值。

公开(公告)号：US06309726B1

公开(公告)日：2001-10-30

申请号：US09350723

申请日：1999-07-09

申请人： Toshitsugu Ono ,  Hirofumi Kondo ,  Tetsuhiro Sakamoto

发明人： Toshitsugu Ono ,  Hirofumi Kondo ,  Tetsuhiro Sakamoto

IPC分类号： B32B302

CPC分类号： G11B7/252 ,  G11B7/2534 ,  G11B7/2542 ,  G11B7/2545 ,  G11B7/2548 ,  G11B7/2585 ,  G11B2007/24306 ,  G11B2007/25417 ,  G11B2007/2571 ,  G11B2007/25713 ,  Y10S428/913 ,  Y10S430/146 ,  Y10T428/21

摘要： An optical recording medium incorporating a supporting body; a recording portion which is formed on either main surface of the supporting body and on which a signal is recorded; and a light permeable layer formed on the recording portion, wherein light is applied from a position adjacent to the light permeable layer to record/reproduce a signal, and carboxylic acid amine salt expressed by general formula (1) and/or general formula (2) is held on the surface which is irradiated with light where n is an integer from 1 to 3, each of R1 and R2 is hydrogen or a hydrocarbon group, R3 is a hydrocarbon group and Rf is a perfluoroalkyl group having three or more carbon atoms, where at least either of R1 and R2 is perfluoroalkyl group having three or more carbon atoms, at least any one of R1, R2, R3, R4 and R5 is hydrocarbon group having 12 or more carbon atoms and the rest of them are hydrogen or hydrocarbon group.

摘要翻译： 一种包含支撑体的光记录介质; 记录部分，其形成在所述支撑体的任一主表面上并且在其上记录信号; 以及形成在记录部分上的透光层，其中从邻近透光层的位置施加光以记录/再现信号，以及由通式（1）和/或通式（2）表示的羧酸胺盐 ）保持在照射光的表面上，其中n为1〜3的整数，R1和R2各自为氢或烃基，R3为烃基，Rf为碳原子数为3以上的全氟烷基， 其中R1和R2中的至少一个是具有三个或更多个碳原子的全氟烷基，R 1，R 2，R 3，R 4和R 5中的至少任一个是具有12个或更多个碳原子的烃基，其余的是氢或烃 组。

公开(公告)号：US5726970A

公开(公告)日：1998-03-10

申请号：US615965

申请日：1995-03-14

申请人： Masahiko Kaneko ,  Ariyoshi Nakaoki ,  Tetsuhiro Sakamoto

发明人： Masahiko Kaneko ,  Ariyoshi Nakaoki ,  Tetsuhiro Sakamoto

IPC分类号： G11B7/005 ,  G11B7/00 ,  G11B7/085 ,  G11B7/24 ,  G11B11/10 ,  G11B11/105 ,  G11B13/00 ,  G11B3/74

CPC分类号： G11B11/10584 ,  G11B7/24 ,  G11B11/10597

摘要： A novel multi-layer optical disc according to the present invention can treat a large volume of information without deterioration in level of reproduction signals from the respective information storage layers thereof. The multi-layer optical disc comprises a substrate having a light-transmission property, a read-only-memory type information storage portion formed on the substrate, a semi-transmission layer disposed on the read-only-memory type information storage portion, a spacer layer disposed on the semi-transmission layer and having a light-transmission property, and a rewritable information storage layer disposed on said spacer layer.

摘要翻译： 根据本发明的新型多层光盘可以处理大量的信息，而不会使来自其各个信息存储层的再现信号的电平下降。 多层光盘包括具有透光性的基板，形成在基板上的只读存储器型信息存储部，设置在只读存储器型信息存储部上的半透射层， 间隔层设置在半透射层上并具有透光性，以及设置在所述间隔层上的可重写信息存储层。