公开(公告)号：US4985885A

公开(公告)日：1991-01-15

申请号：US213817

申请日：1988-06-30

申请人： Kenji Ohta ,  Akira Takahashi ,  Hiroyuki Katayama ,  Junji Hirokane ,  Yoshiteru Murakami

发明人： Kenji Ohta ,  Akira Takahashi ,  Hiroyuki Katayama ,  Junji Hirokane ,  Yoshiteru Murakami

IPC分类号： G11B11/105 ,  G11B19/12 ,  G11B19/20

CPC分类号： G11B19/12 ,  G11B11/10584 ,  G11B11/10586 ,  G11B19/20

摘要： An optical memory device comprising a first light-permeable substrate, a second light-permeable substrate and a plurality of strip-shaped optical recording layers that are disposed with a gap between the first substrate and the second substrate, wherein the optical path length from the outer surface of the first substrate to the recording layers is approximately equal to the optical path length from the outer surface of the second surface to the recording layers.

公开(公告)号：US4839251A

公开(公告)日：1989-06-13

申请号：US36426

申请日：1987-04-09

申请人： Kenji Ohta ,  Akira Takahashi ,  Tetsuya Inui ,  Junji Hirokane ,  Hiroyuki Katayama

发明人： Kenji Ohta ,  Akira Takahashi ,  Tetsuya Inui ,  Junji Hirokane ,  Hiroyuki Katayama

IPC分类号： G11B7/26

CPC分类号： G11B7/261

摘要： A photo-mask for use in manufacturing an optical memory disc has a substrate having a disc shape and made of a transparent material, and a film deposited on the substrate and formed with a predetermined pattern of grooves extending spirally or concentrically to the center of the disc shaped substrate such as to leave a thin film at the bottom of the grooves, and a number of microscopic pits in the form of minute indentations with a predetermined spacing aligned along the grooves so as to substantially leave no film at the bottom of the indentations. Thus, a light which has passed through the thin film at grooves is weakened and a light which has passed through the indentations loses substantially no power, and a light applied elsewhere on the film is cut off. The photo-mask is made through the steps of depositing an opaque film on a substrate having a disc shape and made of a transparent material, impinging a first laser at places where the grooves are to be formed, and impinging a second laser at places where the pits are to be formed. The first laser is weaker in power than the second laser.

摘要翻译： 用于制造光学存储盘的光掩模具有盘形状并由透明材料制成的基板，以及沉积在基板上并形成有螺旋状或同心地延伸到其中心的预定图案的凹槽的薄膜 盘形基板，例如在凹槽的底部留下薄膜，并且具有沿着凹槽对准的预定间隔的微小凹痕形式的多个微凹坑，以便在凹痕的底部基本上不留下薄膜 。 因此，通过凹槽处的薄膜的光被削弱，并且已经穿过凹痕的光基本上不会损失功率，并且切断在膜上其他地方施加的光。 光掩模是通过以下步骤制成的：通过在具有圆盘形状并由透明材料制成的衬底上沉积不透明膜，将第一激光照射到要形成凹槽的位置，并将第二激光照射在 坑将形成。 第一个激光器的功率比第二个激光器弱。

公开(公告)号：US4818648A

公开(公告)日：1989-04-04

申请号：US934718

申请日：1986-11-25

申请人： Kenji Ohta ,  Akira Takahashi ,  Tetsuya Inui ,  Hiroyuki Katayama ,  Junji Hirokane ,  Yoshiteru Murakami

发明人： Kenji Ohta ,  Akira Takahashi ,  Tetsuya Inui ,  Hiroyuki Katayama ,  Junji Hirokane ,  Yoshiteru Murakami

IPC分类号： G11B11/10 ,  C03C3/076 ,  C03C3/083 ,  C03C3/091 ,  C03C4/00 ,  C03C15/00 ,  G11B7/24 ,  G11B7/253 ,  G11B7/26 ,  G11B11/105 ,  G03C5/16 ,  G01D9/00 ,  G11B3/70

CPC分类号： G11B7/24 ,  C03C3/076 ,  C03C3/083 ,  C03C3/091 ,  G11B7/2531 ,  G11B7/261 ,  G11B2007/24304 ,  G11B7/2533 ,  Y10T428/24479 ,  Y10T428/2457

摘要： An optical memory element comprising a substrate with grooves functioning as grooves for, for example, controlling the position of a laser beam, wherein said substrate is composed of a glass containing SiO.sub.2 in the range of 51 to 71% by weight, Na.sub.2 O in the range of 10 to 18% by weight, K.sub.2 O in the range of 0 to 8% by weight, Al.sub.2 O.sub.3 in the range of 12 to 22% by weight, and B.sub.2 O.sub.3 in the range of 0 to 9% by weight.

摘要翻译： 一种光学存储元件，包括具有用作例如控制激光束位置的凹槽的衬底，其中所述衬底由含有51至71重量％的SiO 2的玻璃组成，在该范围内的Na 2 O在该范围内 为10〜18重量％，K 2 O为0〜8重量％，Al 2 O 3为12〜22重量％，B 2 O 3为0〜9重量％。

公开(公告)号：US4778747A

公开(公告)日：1988-10-18

申请号：US17456

申请日：1987-02-24

申请人： Kenji Ohta ,  Akira Takahashi ,  Tetsuya Inui ,  Junji Hirokane ,  Toshihisa Deguchi

发明人： Kenji Ohta ,  Akira Takahashi ,  Tetsuya Inui ,  Junji Hirokane ,  Toshihisa Deguchi

IPC分类号： G03F7/00 ,  G11B7/24 ,  G11B7/26 ,  G11B11/105 ,  G03C5/00 ,  G11B3/72

CPC分类号： G03F7/0035 ,  G11B11/10582 ,  G11B7/24 ,  G11B7/261 ,  Y10S430/146

摘要： A method of manufacturing an optical memory element, which includes the steps of applying a first photo-resist layer onto a glass substrate for an optical memory element, laying a mask plate on the glass substrate applied with the first photo-resist layer, with the mask plate being prepared by covering a surface of a transparent substrate with metallic layers formed into a guide pattern configuration, irradiating ultraviolet rays onto the first photo-resist layer through the mask plate, transferring the guide patterns of the mask plate onto the first photo-resist layer, and engraving the guide patterns in the glass substrate by etching after developing the first photo-resist layer.

摘要翻译： 一种制造光学存储元件的方法，包括以下步骤：将第一光致抗蚀剂层施加到用于光学存储元件的玻璃基板上，在施加有第一光致抗蚀剂层的玻璃基板上铺设掩模板， 通过用形成为引导图案构造的金属层覆盖透明基板的表面来制备掩模板，通过掩模板将紫外线照射到第一光致抗蚀剂层上，将掩模板的引导图案转印到第一光致抗蚀剂层上， 抗蚀剂层，并且在显影第一光致抗蚀剂层之后通过蚀刻在玻璃基板中雕刻引导图案。

公开(公告)号：US4544443A

公开(公告)日：1985-10-01

申请号：US606534

申请日：1984-05-03

申请人： Kenji Ohta ,  Junji Hirokane ,  Hiroyuki Katayama ,  Akira Takahashi ,  Hideyoshi Yamaoka

发明人： Kenji Ohta ,  Junji Hirokane ,  Hiroyuki Katayama ,  Akira Takahashi ,  Hideyoshi Yamaoka

IPC分类号： G11B7/24 ,  G11B7/26 ,  G11B11/105 ,  B44C1/22 ,  C03C15/00 ,  C03C25/06

CPC分类号： G11B7/26 ,  G11B11/10582 ,  G11B7/24

摘要： An optical memory element includes stripe-shaped grooves formed directly on a glass substrate. To manufacture the optical memory element, a resist film is disposed on the glass substrate, and a groove pattern is formed in the resist film. A reactive ion etching is conducted through the groove pattern formed in the resist film so as to form the guide grooves in the glass substrate. After removing the resist film from the glass substrate, a magneto-optical recording layer is formed on the glass substrate.

摘要翻译： 光学存储元件包括直接形成在玻璃基板上的条状槽。 为了制造光学存储元件，在玻璃基板上设置抗蚀剂膜，并且在抗蚀剂膜中形成凹槽图案。 通过在抗蚀剂膜中形成的沟槽图案进行反应离子蚀刻，以在玻璃基板中形成引导槽。 在从玻璃基板除去抗蚀剂膜之后，在玻璃基板上形成磁光记录层。

公开(公告)号：US07948852B2

公开(公告)日：2011-05-24

申请号：US12798342

申请日：2010-03-31

申请人： Junji Hirokane ,  Noboru Iwata

发明人： Junji Hirokane ,  Noboru Iwata

IPC分类号： G11B7/00

CPC分类号： G11B7/126 ,  G11B7/0045 ,  G11B7/00454 ,  G11B7/007 ,  G11B7/00718 ,  G11B7/00745 ,  G11B7/1267 ,  G11B7/24 ,  G11B7/24038 ,  G11B7/263 ,  G11B20/00086 ,  G11B20/00195 ,  G11B20/0021 ,  G11B20/00253 ,  G11B2007/0013

摘要： An optical read/write apparatus causes a read/write light beam from illuminating means to strike only one side of an optical storage medium including stacked data storage layers each of which is readable/writeable separately from the other layers. In this case, the optical read/write apparatus operates so that data is read/written from/into a second data storage layer after fully recording a recordable area of a first data storage layer. Thus, light can be shone with uniform intensity across the substantially entire recordable area of the second data storage layer without using a complex read/write system even under such conditions that the transmittance to light of the first data storage layer in the recordable area may vary depending on whether any data is recorded in the recordable area.

公开(公告)号：US06545955B1

公开(公告)日：2003-04-08

申请号：US09628646

申请日：2000-07-28

申请人： Noboru Iwata ,  Junji Hirokane

发明人： Noboru Iwata ,  Junji Hirokane

IPC分类号： G11B1100

CPC分类号： G11B11/10584 ,  G11B11/10593

摘要： The magneto-optical storage medium includes: a reproduction layer exhibiting in-plane magnetization at room temperature and changing to perpendicular magnetization above a transition temperature Tp1; a first in-plane magnetized layer disposed adjacent the reproduction layer and constituted by an in-plane magnetized film having a Curie temperature Tc2 around the transition temperature Tp1; a storage layer constituted by a perpendicularly magnetized film for storing information; and at least one supplementary reproduction section, interposed between the storage layer and the first in-plane magnetized layer, constituted by a first supplementary reproduction layer and a second in-plane magnetized layer, the first supplementary reproduction layer exhibiting in-plane magnetization at room temperature and changing to perpendicular magnetization above a transition temperature Tp3, the second in-plane magnetized layer being disposed adjacent the first supplementary reproduction layer and constituted by an in-plane magnetized film having a Curie temperature around the transition temperature Tp3, wherein Tp1

摘要翻译： 磁光存储介质包括：在室温下呈现平面内磁化并且在转变温度Tp1之上变为垂直磁化的再现层;邻近再生层设置并由平面内磁化的第一平面内磁化层 具有围绕转变温度Tp1的居里温度Tc2的膜;由用于存储信息的垂直磁化膜构成的存储层; 以及由第一辅助再现层和第二平面内磁化层构成的介于所述存储层和所述第一平面内磁化层之间的至少一个补充再现部，所述第一辅助再现层在室温下表现出面内的磁化强度 并且转变为高于转变温度Tp3的垂直磁化强度，所述第二平面内磁化层邻近所述第一补充再生层设置，并且由具有居里温度的转变温度Tp3的平面内磁化膜构成，其中Tp1

公开(公告)号：US06534162B1

公开(公告)日：2003-03-18

申请号：US09606201

申请日：2000-06-29

申请人： Junji Hirokane ,  Noboru Iwata

发明人： Junji Hirokane ,  Noboru Iwata

IPC分类号： G11B11105

CPC分类号： G11B11/10515 ,  G11B11/10593 ,  Y10T428/24942

摘要： A magneto-optical recording medium includes at least: a reproducing magnetic layer composed at least of Gd and Co showing an in-plane magnetization state at room temperature and a transition to a perpendicular magnetization state at temperatures of not lower than a critical temperature; and a recording magnetic layer formed of a perpendicular magnetization film, the reproducing magnetic layer and the recording magnetic layer being magneto-statically coupled at least in the vicinity of the critical temperature, the reproducing magnetic layer containing at least either Tb or Dy so as to increase the total magnetization at a temperature at which a perpendicular magnetic anisotropy constant and a diamagnetic field energy are equal to each other.

摘要翻译： 磁光记录介质至少包括：至少包含Gd和Co的再现磁性层，其在室温下表现出平面内的磁化状态，并且在不低于临界温度的温度下转变为垂直磁化状态; 以及由垂直磁化膜形成的记录磁性层，再现磁性层和至少在临界温度附近磁记录磁性层磁记录磁性层，至少含有Tb或Dy的再现磁性层以至 在垂直磁各向异性常数和反磁场能量彼此相等的温度下增加总磁化强度。

公开(公告)号：US06510129B1

公开(公告)日：2003-01-21

申请号：US09675240

申请日：2000-09-29

申请人： Junji Hirokane ,  Noboru Iwata

发明人： Junji Hirokane ,  Noboru Iwata

IPC分类号： G11B724

CPC分类号： G11B7/24085 ,  G11B7/00718 ,  G11B7/00745 ,  G11B7/261

摘要： An optical recording medium includes a substrate having groove and land areas, in which address pits having substantially the same depth and which are formed deeper than the groove area are provided. By thus forming the address pits deeper than the groove area, address information can be reproduced accurately, and the optical recording medium can readily be manufactured by making the address pits which are respectively formed in the groove and land areas to have substantially the same depth.

摘要翻译： 光学记录介质包括具有槽和焊盘区域的基板，其中具有基本相同深度的地址坑形成在凹槽区域的深度。 通过这样形成比沟槽区域更深的地址坑，可以精确地再现地址信息，并且可以通过使分别形成在沟槽区域中的地址坑具有基本上相同的深度来容易地制造光学记录介质。

公开(公告)号：US06456571B1

公开(公告)日：2002-09-24

申请号：US09541093

申请日：2000-03-31

申请人： Junji Hirokane ,  Noboru Iwata

发明人： Junji Hirokane ,  Noboru Iwata

IPC分类号： G11B1100

CPC分类号： G11B11/10515 ,  G11B11/10584 ,  G11B11/10593 ,  Y10T428/1171

摘要： A magneto-optical recording medium comprising a recording magnetic layer made of a perpendicularly magnetized film and a multilayer reproducing film, wherein the multilayer reproducing film has two reproducing magnetic layers which are in a in-plane magnetized state at room temperature and shift to a perpendicularly magnetized state with a rise in temperature and an in-panel magnetized layer disposed between the two reproducing magnetic layers, which is in an in-plane magnetized state from room temperature to a Curie temperature and has a lower Curie temperature than the recording magnetic layer and the reproducing magnetic layers.

摘要翻译： 一种磁光记录介质，包括由垂直磁化膜制成的记录磁性层和多层再现膜，其中所述多层再现膜具有两个在室温下处于平面内磁化状态的再现磁性层，并且垂直移动 具有温度升高的磁化状态和设置在两个再现磁性层之间的面内磁化层，所述两个再现磁性层处于从室温到居里温度的面内磁化状态，并且具有比记录磁性层低的居里温度， 再现磁性层。