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81. 发明授权

US5386400A Magneto-optical head device having a lubricated member 失效
标题翻译：具有润滑部件的磁光头装置
公开(公告)号：US5386400A
公开(公告)日：1995-01-31
申请号：US183259
申请日：1994-01-19
申请人： Junichiro Nakayama , Tomoyuki Miyake , Hiroyuki Katayama , Kenji Ohta
发明人： Junichiro Nakayama , Tomoyuki Miyake , Hiroyuki Katayama , Kenji Ohta
IPC分类号： G11B5/40 , G11B5/60 , G11B11/105 , G11B23/50 , G11B33/14 , G11B13/04
CPC分类号： G11B5/6005 , G11B11/1058 , G11B23/505 , G11B33/148 , G11B5/6082 , G11B5/40 , G11B5/6011
摘要： A magneto-optical recording device has a flying head that floats over a magneto-optical disk according to the rotation of the magneto-optical disk. The flying head includes a head slider. A solid lubricant is applied to the bottom surface of the head slider facing the magneto-optical disk. Since the solid lubricant makes the flying head contact with the magneto-optical disk smoothly, the scratching and wear of the magneto-optical disk and the flying head decrease. Therefore, the reliability and the durability of the magneto-optical recording device can improve. Physical protrusions and recessions or holes containing fluorocarbon oil therein may be formed instead of the solid lubricant. In this case, the contact area between the flying head and the magneto-optical disk is also smaller than the case where physical protrusions and recessions are not formed. In addition, with a configuration such that thin-film layers made of a fluorocarbon resin having an excellent lubricity are formed on both sides of the bottom surface of the head slider, since the magneto-optical disk comes into contact with the head smoothly, the reliability and the durability of the magneto-optical recording device can improve.
摘要翻译：磁光记录装置具有根据磁光盘的旋转而浮动在磁光盘上的飞头。飞头包括头滑块。将固体润滑剂施加到面向磁光盘的磁头滑块的底表面上。由于固体润滑剂使飞头与磁光盘平滑地接触，所以磁光盘和飞头的划伤和磨损减小。因此，可以提高磁光记录装置的可靠性和耐久性。可以形成其中包含氟碳油的物理突起和凹陷或孔，而不是固体润滑剂。在这种情况下，飞头和磁光盘之间的接触面积也小于没有形成物理突起和凹陷的情况。此外，由于磁头与磁头滑块底面的两侧形成具有优异的润滑性的氟碳树脂制成的薄膜层，所以由于磁光盘顺利地与磁头接触，所以，可以提高磁光记录装置的可靠性和耐久性。

82. 发明授权

US5331612A Magneto-optical recording apparatus using the magnetic field modulation method 失效
标题翻译：使用磁场调制方法的磁光记录装置
公开(公告)号：US5331612A
公开(公告)日：1994-07-19
申请号：US922854
申请日：1992-07-31
申请人： Yoshiteru Murakami , Kenji Ohta , Akira Takahashi
发明人： Yoshiteru Murakami , Kenji Ohta , Akira Takahashi
IPC分类号： G11B5/02 , G11B11/10 , G11B11/105 , G11B13/04
CPC分类号： G11B11/10521 , G11B11/10508 , G11B11/1051 , G11B11/10528 , G11B11/1053 , G11B11/10595
摘要： A magneto-optical recording apparatus which records information through the processes of: first irradiating a light beam onto a magneto-optical recording medium having a recording film; and next applying an external magnetic field that is inverted in response to a recording signal onto the recording film while continuing the first process. In the above arrangement, the intensity of the light beam is dropped upon inversion of the external magnetic field so that information is not recorded. The intensity of the light beam is raised during non-inversion of the external magnetic field so that information is recorded. Further the magneto-optical recording apparatus is provided with a light intensity control device for varying the intensity of the light beam dependent of the lengths of recording bits so that the high-temperature area of the recording film is not widened. Since the width of the recording bits is uniformly maintained, the remaining of the recording bit after overwriting operation can be reduced; thus, the signal quality in reproduction can be enhanced.
摘要翻译：一种磁光记录装置，其通过以下处理记录信息：首先将光束照射到具有记录膜的磁光记录介质上; 并且接着在继续进行第一处理的同时将响应于记录信号反转的外部磁场施加到记录膜上。在上述布置中，光束的强度在外部磁场反转时下降，从而不记录信息。在外部磁场的非反相期间，光束的强度升高，从而记录信息。此外，磁光记录装置设置有光强度控制装置，用于根据记录位的长度改变光束的强度，使得记录膜的高温区域不会变宽。由于记录位的宽度被均匀地保持，所以可以减少重写操作之后的记录位的剩余部分。因此，可以提高再现中的信号质量。

83. 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。

84. 发明授权

US5317555A Optical head device utilizing partially overlapping light spots to read information from a readout layer 失效
标题翻译：使用部分重叠的光点从读出层读取信息的光学头装置
公开(公告)号：US5317555A
公开(公告)日：1994-05-31
申请号：US910837
申请日：1992-07-08
申请人： Akira Takahashi , Yoshiteru Murakami , Junsaku Nakajima , Kenji Ohta
发明人： Akira Takahashi , Yoshiteru Murakami , Junsaku Nakajima , Kenji Ohta
IPC分类号： G11B11/10 , G11B11/105 , G11B13/04
CPC分类号： G11B11/10545 , G11B11/10515
摘要： A magneto-optical disk has a recording layer whereon recorded bits are formed by the magnetic field modulation method and a readout layer whose axis of easy magnetization is parallel to the recording layer at room temperature, and varies to be perpendicular to the recording layer within a predetermined temperature range between room temperature and the Curie temperature. During reproduction of the recorded bits the first semiconductor laser emits a heating-use light beam to form the first light spot on the readout layer Thus, a ring-shaped region corresponding to the predetermined temperature range exhibits perpendicular magnetic anisotropy and the recorded bits are copied from the recording layer onto the ring-shaped region. As the first light spot is shifted, the ring-shaped region as a readout window of recorded bits is also shifted. Further, the second semiconductor laser emits a reproduction-use light beam such that the second light spot is formed on the readout layer to overlap the first light spot at a rear portion thereof. Consequently, only one recorded bit copied onto the rear portion of the ring-shaped region can be reproduced; therefore, high-quality reproduced signals can be obtained from the magneto-optical disk having information recorded with high density.
摘要翻译：磁光盘具有通过磁场调制方法形成记录位的记录层和容易磁化的轴在室温下与记录层平行的读出层，并且在其内变化为垂直于记录层室温和居里温度之间的预定温度范围。在再现记录位期间，第一半导体激光器发出加热用光束，以在读出层上形成第一光点。因此，对应于预定温度范围的环形区域呈现垂直的磁各向异性，并且记录的位被复制从记录层到环形区域。当第一个光点移动时，作为记录位的读出窗口的环形区域也被移位。此外，第二半导体激光器发射再现用光束，使得第二光点形成在读出层上，以在其后部与第一光点重叠。因此，只能再现复制到环形区域后部的一个记录位; 因此，可以从具有以高密度记录的信息的磁光盘获得高质量的再现信号。

85. 发明授权

US5305300A Magneto optical storage device using a multi-layer film of Pt/Co laminated sections 失效
标题翻译：磁光存储器件采用Pt / Co层叠多层薄膜
公开(公告)号：US5305300A
公开(公告)日：1994-04-19
申请号：US888548
申请日：1992-05-22
申请人： Kenji Ohta , Akira Takahashi , Junsaku Nakajima , Yoshiteru Murakami
发明人： Kenji Ohta , Akira Takahashi , Junsaku Nakajima , Yoshiteru Murakami
IPC分类号： G11B11/105 , G11B7/24
CPC分类号： G11B11/10582 , G11B11/10593 , Y10S428/90
摘要： A magneto-optical storage device having a configuration wherein a first AlN film, a Pt/co multi-layer film formed by alternately depositing Pt and Co, a second AlN film, and an Al reflective film are successively laminated on a substrate in this order. Assuming that respectively the thickness of the first AlN film is .delta.AlN (1); that of the second AlN film is .delta.AlN (2); that of the Pt single layer is .delta.Pt; that of the Co single layer is .delta.Co; and the total thickness of the Pt/Co multi-layer film is .delta.Pt/Co, each thickness of those layers is set to range within: 50 nm .ltoreq..delta.AlN (1).ltoreq.200 nm; 120 nm.ltoreq..delta.AlN (2).ltoreq.140 nm; 0.6 nm.ltoreq..delta.Pt.ltoreq.1.0 nm; 0.3 nm.ltoreq..delta.Co.ltoreq.0.6 nm; and 15 nm.ltoreq..delta.Pt/Co.ltoreq.20 nm. In accordance with the above arrangement, it is possible to greatly widen the tolerances of the film thicknesses of the first and second dielectric layers for obtaining a predetermined reflective index as well as a maximum Kerr rotation angle. Consequently, without strictly controlling the film thicknesses of the first and second AlN films, a magneto-optical storage device with stable performance suitable for practical use can be produced easily.
摘要翻译：具有这样一种结构的磁光存储装置，其中第一AlN膜，通过交替沉积Pt和Co形成的Pt / co多层膜，第二AlN膜和Al反射膜依次层叠在基板上。假设第一AlN膜的厚度分别为（Δ）AlN（1）; 第二AlN膜的厚度为（Δ）AlN（2）; Pt单层为（delta）Pt; Co单层为（delta）Co; 并且Pt / Co多层膜的总厚度为（delta）Pt / Co，这些层的每个厚度设定在：50nm <=（delta）AlN（1）<= 200nm的范围内; 120nm <=（delta）AlN（2）<= 140nm; 0.6nm <=（delta）Pt <= 1.0nm; 0.3nm <=（delta）Co <= 0.6nm; 和15nm <=（delta）Pt / Co <= 20nm。根据上述结构，可以大大拓宽第一和第二介质层的膜厚的公差，以获得预定的反射率以及最大的克尔旋转角。因此，在不严格控制第一和第二AlN膜的膜厚的情况下，可以容易地制造出具有适合于实际应用的稳定性能的磁光存储装置。

86. 发明授权

US5202862A Magneto-optical recording and reproducing device having integrally formed recording and reproducing magnetic heads 失效
标题翻译：具有整体形成记录和复制磁头的磁光记录和再现装置
公开(公告)号：US5202862A
公开(公告)日：1993-04-13
申请号：US713742
申请日：1991-06-11
申请人： Kenji Ohta , Akira Takahashi , Tetsurou Muramatsu , Tatsushi Yamamoto , Toshio Ishikawa
发明人： Kenji Ohta , Akira Takahashi , Tetsurou Muramatsu , Tatsushi Yamamoto , Toshio Ishikawa
IPC分类号： G11B5/00 , G11B5/127 , G11B5/187 , G11B13/04
CPC分类号： G11B13/045 , G11B5/00 , G11B5/1278 , G11B5/1871 , G11B2005/0002 , G11B2005/0005 , G11B2005/0021
摘要： A magneto-optical recording/reproducing device which records information by irradiating a light beam of constant intensity on a magneto-optical recording medium while simultaneously applying a magnetic field thereon through a recording magnetic head; and which reproduces the recorded information through a reproducing magnetic head. The magneto-optical recording medium has a magnetic film formed on a translucent substrate and the magnetic field applied through the recording magnetic head reverses in response to the information to be recorded. The recording magnetic head and the reproducing magnetic head are integrally provided on a single magnetic core in order to set their positions easily with respect to each other. By making a magnetic core end-face of the reproducing magnetic head smaller than a light beam spot, information recorded on areas smaller than the light beam spot can be reproduced. A large reproduced output may be achieved by using a magneto-optical recording medium which has a soft magnetic material layer made of soft magnetic material provided between the substrate and the magnetic film.

87. 发明授权

US5196978A Cartridge case 失效
标题翻译：弹壳
公开(公告)号：US5196978A
公开(公告)日：1993-03-23
申请号：US48768
申请日：1987-05-12
申请人： Junichi Washo , Kenji Ohta , Shigeo Terashima , Masahiro Horii , Takao Hyuga , Toshihisa Deguchi
发明人： Junichi Washo , Kenji Ohta , Shigeo Terashima , Masahiro Horii , Takao Hyuga , Toshihisa Deguchi
IPC分类号： G11B23/03
CPC分类号： G11B23/0308 , G11B23/0302
摘要： A cartridge case for containing a disk-shaped recording medium has a shutter attached slidably thereon. The shutter is U-shaped sectionally and the edge sections where the shutter contacts the surface of the cartridge case are rounded so that friction therebetween is reduced when the shutter slides on the surface of the cartridge case. The cartridge case is provided with a notch and an indentation on at least one of its side surfaces corresponding to protruding pieces in the device into which the cartridge case is inserted such that a sensor in the device can be activated only when a cartridge case compatible with the device is inserted and these protruding pieces properly engage with the notch and the indentation on the cartridge case.
摘要翻译：用于容纳盘形记录介质的盒壳具有可滑动地附接在其上的挡板。快门是U形截面的，并且快门接触盒壳体的表面的边缘部分是圆形的，使得当快门在盒壳体的表面上滑动时，其间的摩擦力减小。盒壳在其至少一个侧表面上的至少一个侧表面上设有凹口和凹槽，该凹槽和凹槽对应于插入盒壳体的装置中的突出件，使得只有在与盒壳体兼容的盒壳体中才能激活装置中的传感器该装置被插入，并且这些突出部件与卡盘盒上的凹口和凹口适当接合。

88. 发明授权

US5112727A Method of and photomask for manufacturing optical memory element 失效
标题翻译：用于制造光学记忆元件的光电子学方法
公开(公告)号：US5112727A
公开(公告)日：1992-05-12
申请号：US527265
申请日：1990-05-23
申请人： Tetsuya Inui , Junji Hirokane , Akira Shibata , Yoshiyuki Nagahara , Kenji Ohta
发明人： Tetsuya Inui , Junji Hirokane , Akira Shibata , Yoshiyuki Nagahara , Kenji Ohta
IPC分类号： G11B7/26
CPC分类号： G11B7/261 , Y10S428/913
摘要： A method of and a photomask for manufacturing an optical memory element. The manufacturing method includes the steps of: subjecting a positive type photoresist coated on a glass substrate to exposure by using the photomask capable of irradiating light onto a portion of the photoresist other than the remaining portion for forming pits of the glass substrate such that the portion of the photoresist is solubilized against developing solution; developing the photoresist by using the developing solution so as to remove the portion of the photoresist; and etching the glass substrate so as to directly form, as convex portions, the pits on a surface of the glass substrate.

89. 发明授权

US5107486A Optical memory device with grooves and pits in selected dimensional relationship 失效
标题翻译：具有选定尺寸关系的凹槽和凹坑的光学存储器件
公开(公告)号：US5107486A
公开(公告)日：1992-04-21
申请号：US497099
申请日：1990-03-21
申请人： Tetsuya Inui , Junji Hirokane , Toshihisa Deguchi , Kenji Ohta
发明人： Tetsuya Inui , Junji Hirokane , Toshihisa Deguchi , Kenji Ohta
IPC分类号： G11B7/007 , G11B7/013 , G11B7/09
CPC分类号： G11B7/24085 , G11B7/0938 , G11B7/24079
摘要： An optical memory device has grooves for guiding a light spot and pits for serving as track number indicators. The width W.sub.1 and depth d.sub.1 of the grooves and the width W.sub.2 and depth d.sub.2 of the pits are so selected that 2D(W.sub.1, d.sub.1)=1+D(W.sub.2, d.sub.2) where D(W.sub.1, d.sub.1) and D(W.sub.2, d.sub.2) are respectively the reflectivity of the groove and the pit.
摘要翻译：光学存储器件具有用于引导光点和凹坑的凹槽，用作轨道数指示器。凹槽的宽度W1和深度d1以及凹坑的宽度W2和深度d2被选择为2D（W1，d1）= 1 + D（W2，d2）其中D（W1，d1）和D（W2， d2）分别是凹槽和凹坑的反射率。

90. 发明授权

US5087535A Method of manufacturing photo-mask and photo-mask manufactured thereby 失效
标题翻译：制造照相胶片和制造的照相胶片的方法
公开(公告)号：US5087535A
公开(公告)日：1992-02-11
申请号：US19704
申请日：1987-02-27
申请人： Junji Hirokane , Hiroyuki Katayama , Akira Takahashi , Tetsuya Inui , Kenji Ohta , Junichi Washo , Tomoyuki Miyake , Kazuo Van , Michinobu Mieda
发明人： Junji Hirokane , Hiroyuki Katayama , Akira Takahashi , Tetsuya Inui , Kenji Ohta , Junichi Washo , Tomoyuki Miyake , Kazuo Van , Michinobu Mieda
IPC分类号： G03F1/00 , G03F1/54 , G03F1/68 , G11B7/26
CPC分类号： G03F1/54 , G03F1/68 , G11B7/261 , Y10S430/146
摘要： A photo-mask and a method of manufacturing a photo-mask, which includes the steps of applying a resist film onto a substrate of quartz, glass and the like, subjecting the resist film to light exposure and development to form a fine resist pattern, etching the mask substrate covered by the fine resist pattern causing a non-light transmitting thin film of Cr, Ta, etc. to adhere thereon by vapor deposition, sputtering and the like, and removing the thin film on the resist pattern together with the resist film, thereby to form the photo-mask.

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