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41. 发明授权

US5059473A Optical recording medium and manufacturing method thereof 失效
标题翻译：光学记录介质及其制造方法
公开(公告)号：US5059473A
公开(公告)日：1991-10-22
申请号：US308018
申请日：1989-02-09
申请人： Akira Takahashi , Michinobu Mieda , Yoshiteru Murakami , Junichiro Nakayama , Tomoyuki Miyake , Kenji Ohta
发明人： Akira Takahashi , Michinobu Mieda , Yoshiteru Murakami , Junichiro Nakayama , Tomoyuki Miyake , Kenji Ohta
IPC分类号： G11B7/24 , G11B7/26 , G11B11/10 , G11B11/105
CPC分类号： G11B11/10584 , G11B7/26 , Y10S430/146 , Y10T428/239 , Y10T428/24529 , Y10T428/31507
摘要： An optical recording medium, which is used as an optical disc, optical card or the like for optically recording, reproducing, erasing and the like, includes a center substrate having formed on at least one side thereof recesses and/or protrusions. Recording films are formed on both sides thereof and transparent protective plates bonded to these recording films respectively. This arrangement substantially eliminates warping of the substrates constituting the optical recording medium and exfoliation of substrates or the like even when the optical recording medium is subjected to sudden changes in temperature. This optical recording medium demonstrates enhanced optical performance and protective effect. The selecting of the transparent protective plate is simplified because the forming recesses and/or protrusions is not a factor. By producing an optical recording medium utilizing the above features, the carrier-to-noise ratio and isotropy of the medium is improved.

42. 发明授权

US5643687A Magneto-optic memory medium and a method for producing the same 失效
标题翻译：磁光存储介质及其制造方法
公开(公告)号：US5643687A
公开(公告)日：1997-07-01
申请号：US358682
申请日：1994-12-19
申请人： Naoyasu Iketani , Hiroyuki Katayama , Junichiro Nakayama , Kenji Ohta
发明人： Naoyasu Iketani , Hiroyuki Katayama , Junichiro Nakayama , Kenji Ohta
IPC分类号： G11B11/10 , G11B7/257 , G11B11/105 , G11B5/66
CPC分类号： G11B7/2578 , G11B11/10582 , G11B11/10584 , G11B11/10593 , G11B7/252 , G11B2007/24306 , G11B2007/25706 , G11B2007/2571 , G11B2007/25713 , G11B2007/25715 , G11B2007/25718 , G11B7/2531 , G11B7/2533 , G11B7/2534 , G11B7/2585 , Y10S428/90 , Y10T428/24942 , Y10T428/2495 , Y10T428/26 , Y10T428/265
摘要： A magneto-optic memory medium including a first dielectric layer having a first main surface and a second main surface; a second dielectric layer for covering the first main surface of the first dielectric layer; and a magneto-optic memory layer for covering the second dielectric layer. The first dielectric layer is formed of an oxide having a refractive index in the range of 2.4 or more and 3.5 or less, and the second dielectric layer is formed of a material containing no oxygen. The magneto-optic memory medium is produced by the steps of forming a first layer by performing reactive sputtering in an atmosphere of a first sputter gas using a material containing a first element as a target; switching the first sputter gas to a second sputter gas; forming a second layer on the first layer by performing reactive sputtering in an atmosphere of the second sputter gas using a material containing the first element as a target; and forming a magneto-optic memory layer on the second dielectric layer.
摘要翻译：一种磁光存储介质，包括具有第一主表面和第二主表面的第一介电层; 第二电介质层，用于覆盖第一介电层的第一主表面; 以及用于覆盖第二介电层的磁光存储层。第一电介质层由折射率在2.4以上且3.5以下的氧化物形成，第二电介质层由不含氧的材料形成。磁光存储介质通过以下步骤制造：通过使用包含第一元素作为靶的材料在第一溅射气体的气氛中进行反应溅射来形成第一层; 将第一溅射气体切换到第二溅射气体; 通过使用包含第一元素作为目标的材料在第二溅射气体的气氛中进行反应溅射，在第一层上形成第二层; 以及在所述第二电介质层上形成磁光存储层。

43. 发明授权

US5554436A Magneto-optical recording medium 失效
标题翻译：磁光记录介质
公开(公告)号：US5554436A
公开(公告)日：1996-09-10
申请号：US341310
申请日：1994-11-16
申请人： Hiroyuki Katayama , Junichiro Nakayama , Naoyasu Iketani , Kenji Ohta
发明人： Hiroyuki Katayama , Junichiro Nakayama , Naoyasu Iketani , Kenji Ohta
IPC分类号： G11B11/10 , G11B11/105 , G11B13/04
CPC分类号： G11B11/10586 , Y10S428/90 , Y10S430/146 , Y10T428/12632 , Y10T428/12861 , Y10T428/12986 , Y10T428/24942 , Y10T428/31678
摘要： A magneto-optical recording medium is composed of first through fourth magnetic layers laminated in this order in such a way that an exchange coupling exists between any adjacent layers of the first through fourth magnetic layers so that a magnetization direction can be copied, wherein the first magnetic layer is a memory layer, the second magnetic layer is a writing layer, the third magnetic layer is a switching layer, and the fourth magnetic layer is an initializing layer. Further, respective Curie temperatures Tci satisfy an inequation Tc.sub.3
摘要翻译：磁光记录介质由依次层叠的第一至第四磁性层组成，使得在第一至第四磁性层的任何相邻层之间存在交换耦合，使得可以复制磁化方向，其中第一磁性层是存储层，第二磁性层是写入层，第三磁性层是开关层，第四磁性层是初始化层。此外，各居里温度Tci满足不等式Tc3

44. 发明授权

US5347510A Method of manufacturing a master plate where its guide groove has an inclined angle 失效
标题翻译：制造其导向槽具有倾斜角的主板的方法
公开(公告)号：US5347510A
公开(公告)日：1994-09-13
申请号：US4266
申请日：1993-01-14
申请人： Junji Hirokane , Hiroyuki Katayama , Junichiro Nakayama , Michinobu Mieda , Kenji Ohta
发明人： Junji Hirokane , Hiroyuki Katayama , Junichiro Nakayama , Michinobu Mieda , Kenji Ohta
IPC分类号： G01Q80/00 , G11B7/007 , G11B7/24 , G11B7/26
CPC分类号： G11B7/24076 , G11B7/261
摘要： A master plate for manufacturing a stamper for injecting molding of an optical memory device has a substrate having a plurality of guiding grooves on a surface thereof with a predetermined interval. The respective edge portions of the guiding grooves are inclined with respect to the surface of the substrate at an angle not more than 30.degree.. According to a manufacturing method of the master plate, the post-baking process is carried out at a baking temperature of not less than 150.degree. C. and an etching gas containing O.sub.2 gas of 4 (SCCM) to 10 (SCCM) is used. Thus, even when the copying is carried out with respect to the substrate of the optical memory device according to the injection molding process wherein the stamper, which is manufactured based on the above-mentioned master plate, is used, the mold release of the stamper can be carried out without being caught by the substrate. Thus, it is possible to keep the respective shapes of the guiding grooves of the s tamper, thereby enabling of manufacturing the substrate of the optical memory device with high repeatability.
摘要翻译：用于制造用于注射成型光学存储器件的压模的母板具有在其表面上以预定间隔具有多个导向槽的衬底。引导槽的各个边缘部分相对于基板的表面以不大于30°的角度倾斜。根据主板的制造方法，后烘烤处理在不低于150℃的烘烤温度下进行，并且使用含有4（SCCM）至10（SCCM）的O 2气体的蚀刻气体。因此，即使在使用根据上述主板制造的压模的注射成型工艺相对于光学存储器件的基板进行复印时，压模的脱模可以在不被基材捕获的情况下进行。因此，可以保持篡改器的引导槽的各自的形状，从而能够以高重复性制造光学存储器件的基板。

45. 发明授权

US5402408A Magneto-optical recording method of overwriting without requiring an initialization magnet 失效
标题翻译：重写磁光记录方法，不需要初始化磁铁
公开(公告)号：US5402408A
公开(公告)日：1995-03-28
申请号：US964428
申请日：1992-10-21
申请人： Junji Hirokane , Hiroyuki Katayama , Junichiro Nakayama , Michinobu Mieda , Kenji Ohta
发明人： Junji Hirokane , Hiroyuki Katayama , Junichiro Nakayama , Michinobu Mieda , Kenji Ohta
IPC分类号： G11B11/105 , G11B11/10 , G11B7/24
CPC分类号： G11B11/10584 , G11B11/10506 , G11B11/10519 , G11B11/10586
摘要： A magneto-optical recording method for rewriting of information including the steps of projecting a light beam, whose intensity varies in response to information to be recorded, onto a magnetic thin film with perpendicular magnetization while an external magnetic field of a constant intensity is being applied thereto; and arranging the magnetization direction of an area irradiated with the light beam of the magnetic thin film with perpendicular magnetization in the direction of the external magnetic field when projecting the light beam of high intensity, while arranging it in the direction of demagnetizing field, opposite to the direction of the external magnetic field generated by magnetization in the vicinity of the irradiated area when projecting the light beam of low intensity, and a magneto-optical memory element provided with a base whereon the magnetic thin film with perpendicular magnetization and an in-plane magnetization film are formed. With the above arrangement, an overwriting operation can be carried out through light intensity modulation without requiring an initialization magnet.
摘要翻译：一种用于重写信息的磁光记录方法，包括以下步骤：将强度随着要记录的信息而变化的光束投射到具有恒定强度的外部磁场的垂直磁化的磁性薄膜上，到; 以及当投射高强度光束时，沿着外部磁场的方向，使磁性薄膜的光束照射的区域的磁化方向排列成与退磁场相反的方向当投射低强度光束时，在照射区域附近由磁化产生的外部磁场的方向以及设置有具有垂直磁化和平面内的磁性薄膜的基底的磁光存储元件形成磁化膜。通过上述配置，可以通过光强调制而不需要初始化磁体来进行重写操作。

46. 发明授权

US5427833A Magneto-optical recording medium and method for processing the surface 失效
标题翻译：磁光记录介质及表面处理方法
公开(公告)号：US5427833A
公开(公告)日：1995-06-27
申请号：US175957
申请日：1993-12-30
申请人： Junichiro Nakayama , Yoshiteru Murakami , Hiroyuki Katayama , Kenji Ohta
发明人： Junichiro Nakayama , Yoshiteru Murakami , Hiroyuki Katayama , Kenji Ohta
IPC分类号： G11B11/10 , B29C59/02 , B29L17/00 , G11B5/60 , G11B7/26 , G11B11/105 , G11B5/66
CPC分类号： G11B5/6005 , G11B11/1058 , G11B11/10584 , Y10S428/90 , Y10S428/928 , Y10T428/218 , Y10T428/24355 , Y10T428/31935
摘要： A surface of a magneto-optical recording medium of the present invention is textured with fine and physical protrusions and recessions. The shapes of physical protrusions and recessions vary at each radial locations on the medium such that, for example, rough protrusions and recessions are formed in inner parts of the recording medium and fine protrusions and recessions are formed in outer parts thereof. Therefore, floating force given to a floating head from the medium being rotated based on the constant angular velocity method through an air layer in the outer parts equals floating force in the inner parts. Consequently, since the floating height of the floating head becomes constant irrespective of radial locations on the medium, information can be recorded under constant recording conditions, permitting the accuracy of the recording to improve. Regarding a method for processing the surface of a magneto-optical recording medium relating to the present invention, for example, a texture tape whose roughness is large is used in inner parts of the medium while a texture tape whose roughness is small is used in outer parts thereof. As a result, a magneto-optical recording medium having the above characteristics is produced.
摘要翻译：本发明的磁光记录介质的表面具有精细和物理的突出和凹陷的纹理。物理突起和凹陷的形状在介质上的每个径向位置处变化，使得例如在记录介质的内部形成粗糙的突起和凹陷，并且在其外部形成微小的突起和凹陷。因此，通过外部部分中的空气层，基于恒定的角速度法，从介质旋转的浮动浮动力等于内部部分的浮力。因此，由于浮动头的浮动高度与介质上的径向位置无关地变得恒定，所以可以在恒定的记录条件下记录信息，从而可以提高记录的准确性。关于本发明的磁光记录介质的表面的处理方法，例如，在粗糙度小的纹理带用于外部的粗糙度较小的纹理带时，粗糙度大的纹理带用于介质的内部，其部分。结果，产生具有上述特性的磁光记录介质。

47. 发明授权

US5328740A Magneto-optical recording medium and method for processing the surface 失效
标题翻译：磁光记录介质及表面处理方法
公开(公告)号：US5328740A
公开(公告)日：1994-07-12
申请号：US650283
申请日：1991-02-04
申请人： Junichiro Nakayama , Yoshiteru Murakami , Hiroyuki Katayama , Kenji Ohta
发明人： Junichiro Nakayama , Yoshiteru Murakami , Hiroyuki Katayama , Kenji Ohta
IPC分类号： G11B11/10 , B29C59/02 , B29L17/00 , G11B5/60 , G11B7/26 , G11B11/105 , B32B3/02 , B32B3/10 , G11B5/66
CPC分类号： G11B5/6005 , G11B11/1058 , G11B11/10584 , Y10S428/90 , Y10S428/928 , Y10T428/218 , Y10T428/24355 , Y10T428/31935
摘要： A surface of a magneto-optical recording medium of the present invention is textured with fine and physical protrusions and recessions. The shapes of physical protrusions and recessions vary at each radial locations on the medium such that, for example, rough protrusions and recessions are formed in inner parts of the recording medium and fine protrusions and recessions are formed in outer parts thereof. Therefore, floating force given to a floating head from the medium being rotated based on the constant angular velocity method through an air layer in the outer parts equals floating force in the inner parts. Consequently, since the floating height of the floating head becomes constant irrespective of radial locations on the medium, information can be recorded under constant recording conditions, permitting the accuracy of the recording to improve. Regarding a method for processing the surface of a magneto-optical recording medium relating to the present invention, for example, a texture tape whose roughness is large is used in inner parts of the medium while a texture tape whose roughness is small is used in outer parts thereof. As a result, a magneto-optical recording medium having the above characteristics is produced.
摘要翻译：本发明的磁光记录介质的表面具有精细和物理的突出和凹陷的纹理。物理突起和凹陷的形状在介质上的每个径向位置处变化，使得例如在记录介质的内部形成粗糙的突起和凹陷，并且在其外部形成微小的突起和凹陷。因此，通过外部部分中的空气层，基于恒定的角速度法，从介质旋转的浮动浮动力等于内部部分的浮力。因此，由于浮动头的浮动高度与介质上的径向位置无关地变得恒定，所以可以在恒定的记录条件下记录信息，从而可以提高记录的准确性。关于本发明的磁光记录介质的表面的处理方法，例如，在粗糙度小的纹理带用于外部的粗糙度较小的纹理带时，粗糙度大的纹理带用于介质的内部，其部分。结果，产生具有上述特性的磁光记录介质。

48. 发明授权

US5082690A Process for manufacturing a magneto-optic disc 失效
标题翻译：制造磁光盘的方法
公开(公告)号：US5082690A
公开(公告)日：1992-01-21
申请号：US523756
申请日：1990-05-15
申请人： Tomoyuki Miyake , Hiroyuki Katayama , Junichiro Nakayama , Yoshiteru Murakami , Kenji Ohta
发明人： Tomoyuki Miyake , Hiroyuki Katayama , Junichiro Nakayama , Yoshiteru Murakami , Kenji Ohta
IPC分类号： G11B11/10 , F26B13/10 , G11B11/105
CPC分类号： F26B13/103 , G11B11/10584
摘要： The present invention provides a process for manufacturing a magneto-optic disc comprising at least a transparent substrate, a magneto-optic recording film, and a protecting film made of resin for protecting the magneto-optic recording film, comprising the steps of forming the magneto-optic recording film over the entire one side surface of the transparent substrate; providing in a portion adjacent to the peripheral edge of the magneto-optic recording film an annular groove extending in depth through the magneto-optic recording film to the transparent substrate; and forming the protecting film over the surfaces of the magneto-optic recording film and the annular groove.

49. 发明授权

US5691963A Magneto-optical recording device using light-modulated technic without an initial magnetic field 失效
标题翻译：使用没有初始磁场的光调制技术的磁光记录装置
公开(公告)号：US5691963A
公开(公告)日：1997-11-25
申请号：US744565
申请日：1996-11-06
申请人： Junji Hirokane , Hiroyuki Katayama , Akira Takahashi , Kenji Ohta
发明人： Junji Hirokane , Hiroyuki Katayama , Akira Takahashi , Kenji Ohta
IPC分类号： G11B11/10 , G11B11/105 , G11B11/00
CPC分类号： G11B11/10515 , G11B11/10521 , G11B11/10591 , Y10S428/90 , Y10T428/12736 , Y10T428/12771 , Y10T428/12868 , Y10T428/12896 , Y10T428/12903 , Y10T428/1291 , Y10T428/12917 , Y10T428/12924 , Y10T428/12931 , Y10T428/12937 , Y10T428/26 , Y10T428/265
摘要： A magneto-optical recording medium including a base; a readout layer formed on the base; a recording layer formed on the readout layer; and an auxiliary recording layer formed on the recording layer, each of the readout layer, recording layer and auxiliary recording layer being made of an alloy of rare-earth metal and transition metal showing ferrimagnetism. The alloy composition of each layer is determined so that the recording layer has a Curie temperature lower than Curie temperatures of the readout layer and the auxiliary recording layer and has a coercive force higher than coercive forces of the readout layer and the auxiliary recording layer at room temperature and that, when the temperature of the recording layer is raised to near its Curie temperature while perpendicularly applying a uniform recording magnetic field to each layer, a sublattice magnetic moment of the rare-earth metal of the readout layer and a sublattice magnetic moment of the rare-earth metal of the auxiliary recording layer are antiparallel to each other. And, a method of recording information on the magneto-optical recording medium. This structure enables overwriting by light-intensity modulation without using an initializing magnetic field.
摘要翻译：一种包括基底的磁光记录介质; 形成在基底上的读出层; 形成在读出层上的记录层; 以及形成在记录层上的辅助记录层，每个读出层，记录层和辅助记录层由稀土金属和过渡金属的合金制成，显示出铁磁性。确定每层的合金组成，使得记录层的居里温度低于读出层和辅助记录层的居里温度，并且具有高于室内读出层和辅助记录层的矫顽力的矫顽力并且当在每个层垂直地施加均匀的记录磁场的同时将记录层的温度升高到靠近其居里温度时，读出层的稀土金属的亚晶格磁矩和亚晶格磁矩辅助记录层的稀土金属彼此反平行。以及在磁光记录介质上记录信息的方法。该结构能够通过光强度调制而不使用初始化磁场。

50. 发明授权

US5648162A Magneto-optical recording medium and a method of recording and/or reproducing using the same 失效
标题翻译：磁光记录介质及使用其的记录和/或再现方法
公开(公告)号：US5648162A
公开(公告)日：1997-07-15
申请号：US177096
申请日：1993-12-30
申请人： Junji Hirokane , Hiroyuki Katayama , Akira Takahashi , Kenji Ohta
发明人： Junji Hirokane , Hiroyuki Katayama , Akira Takahashi , Kenji Ohta
IPC分类号： G11B11/10 , G11B11/105 , G11B5/66
CPC分类号： G11B11/10515 , G11B11/10521 , G11B11/10591 , Y10S428/90 , Y10T428/12736 , Y10T428/12771 , Y10T428/12868 , Y10T428/12896 , Y10T428/12903 , Y10T428/1291 , Y10T428/12917 , Y10T428/12924 , Y10T428/12931 , Y10T428/12937 , Y10T428/26 , Y10T428/265
摘要： A magneto-optical recording medium including a base; a readout layer formed on the base; a recording layer formed on the readout layer; and an auxiliary recording layer formed on the recording layer, each of the readout layer, recording layer and auxiliary recording layer being made of an alloy of rare-earth metal and transition metal showing ferrimagnetism. The alloy composition of each layer is determined so that the recording layer has a Curie temperature lower than Curie temperatures of the readout layer and the auxiliary recording layer and has a coercive force higher than coercive forces of the readout layer and the auxiliary recording layer at room temperature and that, when the temperature of the recording layer is raised to near its Curie temperature while perpendicularly applying a uniform recording magnetic field to each layer, a sublattice magnetic moment of the rare-earth metal of the readout layer and a sublattice magnetic moment of the rare-earth metal of the auxiliary recording layer are antiparallel to each other. And, a method of recording information on the magneto-optical recording medium. This structure enables overwriting by light-intensity modulation without using an initializing magnetic field.
摘要翻译：一种包括基底的磁光记录介质; 形成在基底上的读出层; 形成在读出层上的记录层; 以及形成在记录层上的辅助记录层，每个读出层，记录层和辅助记录层由稀土金属和过渡金属的合金制成，显示出铁磁性。确定每层的合金组成，使得记录层的居里温度低于读出层和辅助记录层的居里温度，并且具有高于室内读出层和辅助记录层的矫顽力的矫顽力并且当在每个层垂直地施加均匀的记录磁场的同时将记录层的温度升高到靠近其居里温度时，读出层的稀土金属的亚晶格磁矩和亚晶格磁矩辅助记录层的稀土金属彼此反平行。以及在磁光记录介质上记录信息的方法。该结构能够通过光强度调制而不使用初始化磁场。

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