专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

71. 发明授权

US5233597A Magneto-optical disk having a layer of varying thickness 失效
标题翻译：具有变化厚度的MAGNETO-OPTICAL DISK
公开(公告)号：US5233597A
公开(公告)日：1993-08-03
申请号：US714933
申请日：1991-06-13
申请人： Junichiro Nakayama , Hiroyuki Katayama , Kenji Ohta
发明人： Junichiro Nakayama , Hiroyuki Katayama , Kenji Ohta
IPC分类号： G11B11/105 , G11B23/00
CPC分类号： G11B23/0021 , G11B11/10584 , Y10S430/146
摘要： A magneto-optical disk according to the present invention has a substrate (12), a recording layer (13) formed on the substrate and an outer layer (14) formed on the recording layer, above which a floating head is hovered. The outer layer is constituted of a protective layer, an antisticking layer for head, having a texture formed on its surface and other layers. The magneto-optical disk is designed such that, when rotated at a constant angular velocity, the thickness of the outer layer (14) is substantially inversely proportional to a radial position r on the magneto-optical disk raised to the 1/2nd power. In the formation of the outer layer, a screen whose meshes become gradually finer from the innermost portion toward the circumferential portion of the magneto-optical disk is employed based on the screen printing technique. Further, photo hardening resin is used as the outer layer, and simply by changing a wavelength or irradiation amount of light to be applied thereto, a texture is readily formed on the surface of the outer layer. By the use of the present invention, stable recording, erasing and re-writing operations are achieved, and it becomes possible to prevent the floating head from sticking to the magneto-optical disk and reduce the cost thereof.

72. 发明授权

US5214636A Optical recording element having a plurality of thin film filtering layers and optical recording element having an electrically conductive layer 失效
标题翻译：具有多个薄膜滤光层的光学记录元件和具有导电层的光学记录元件
公开(公告)号：US5214636A
公开(公告)日：1993-05-25
申请号：US421757
申请日：1989-10-16
申请人： Toshio Ishikawa , Hiroyuki Katayama , Kazuo Van , Tomoyuki Miyake , Junichiro Nakayama , Kenji Ohta , Hideyoshi Yamaoka
发明人： Toshio Ishikawa , Hiroyuki Katayama , Kazuo Van , Tomoyuki Miyake , Junichiro Nakayama , Kenji Ohta , Hideyoshi Yamaoka
IPC分类号： G11B7/24053 , G11B7/253 , G11B7/254
CPC分类号： G11B7/253 , G11B7/24053 , G11B7/254
摘要： An optical recording element according to the present invention comprising: (i) a transparent substrate through which light passes; (ii) a transparent low-resistance layer having a specific resistance so as to prevent the adhesion of dust to the surface of the element caused by a static charge, the layer being formed on the surface, on which a light beam is incident, of the transparent substrate; and (iii) an optical thin film composed of at least one layer, formed on the other surface of the transparent substrate so as to transmit light beams used for recording, erasing and playback, and reflect lights which have wavelengths different from the wavelength of the above light beams and are within a specified visible region of the spectrum. With this arrangement, lights within a specified visible region of the spectrum are reflected so that the element appears to be colored according to the wavelengths of the reflected lights. Also, a problem often found in a conventional optical recording element having a transparent substrate of a resin material that the surface of the element is hardened by a light beam, can be solved. Even if a static charge is generated on the surface of such an element, the conductive transparent low-resistance substrate can eliminate the static charge outward whereby a static charge is less likely to be accumulated and the surface can be kept clean in order to improve the reliability.
摘要翻译：根据本发明的光学记录元件包括：（i）光通过的透明基板; （ii）具有电阻率的透明低电阻层，以防止由静电引起的灰尘附着在元件表面上，该层形成在光束入射的表面上的层是透明基板; 和（iii）由至少一层构成的光学薄膜，形成在透明基板的另一个表面上，以透射用于记录，擦除和重放的光束，并且反射具有与波长不同的波长的光在光束之上，并且在光谱的指定可视区域内。通过这种布置，光谱的指定可视区域内的光被反射，使得该元件看起来根据反射光的波长着色。而且，通过在具有树脂材料的透明基板的光学记录元件中经常发现的问题在于，元件的表面被光束硬化。即使在这种元件的表面上产生静电荷，导电透明低电阻基板也可以向外消除静电荷，由此静电荷不易累积，并且表面可以保持清洁以改善可靠性。

73. 发明授权

US5157568A Floating type magnetic head device 失效
标题翻译：浮动式磁头装置
公开(公告)号：US5157568A
公开(公告)日：1992-10-20
申请号：US624404
申请日：1990-12-07
申请人： Hiroyuki Katayama , Junichiro Nakayama , Tomoyuki Miyake , Kenji Ohta
发明人： Hiroyuki Katayama , Junichiro Nakayama , Tomoyuki Miyake , Kenji Ohta
IPC分类号： G11B5/105 , G11B5/60 , G11B11/105
CPC分类号： G11B5/6005 , G11B11/1058 , G11B5/105
摘要： A floating type magnetic head device of the present invention includes a slider capable of floating above a recording medium while moving relatively to the recording medium, and a magnetic head. The magnetic head is incorporated inside a cavity section formed substantially in the center of the slider. By incorporating the magnetic head inside the cavity section, the magnetic head can be protected, thereby reducing a possibility of head crash of the magnetic head due to its contact with dust or a projecting object existing on the surface of the recording medium. Further, by disposing the magnetic head substantially in the center of the slider, it can be avoided that the direction of an air stream at the center of the slider varies depending on an instantaneous position in a radial direction of the recording medium, thereby providing stable floating characteristics of the floating type magnetic head device and improving accuracy of recording.
摘要翻译：本发明的浮动式磁头装置包括能够在相对于记录介质移动的同时在记录介质上漂浮的滑块和磁头。磁头装在基本上形成在滑块中心的空腔部分内。通过将磁头结合在空腔部分内，可以保护磁头，从而减少磁头由于与灰尘或存在于记录介质表面上的突出物体的接触而头部碰撞的可能性。此外，通过将磁头设置在滑块的中心，可以避免滑块中心处的空气流的方向根据记录介质的径向方向上的瞬时位置而变化，从而提供稳定的浮动式磁头装置的浮动特性，提高记录精度。

74. 发明授权

US5058099A Magneto-optical memory element 失效
标题翻译：磁光记忆元件
公开(公告)号：US5058099A
公开(公告)日：1991-10-15
申请号：US391249
申请日：1989-08-09
申请人： Yoshiteru Murakami , Akira Takahashi , Kazuo Van , Junichiro Nakayama , Hiroyuki Katayama , Kouji Ohta
发明人： Yoshiteru Murakami , Akira Takahashi , Kazuo Van , Junichiro Nakayama , Hiroyuki Katayama , Kouji Ohta
IPC分类号： G11B11/10 , G11B11/105
CPC分类号： G11B11/10584 , G11B11/10586
摘要： A magneto-optical memory element has a multi-layer construction in the order from a side first receiving light from a light-source which includes a first transparent dielectric film, a rare earth transition metal alloy film, a second transparent dielectric film and a reflective film. The magneto-optical device uses circular dichroism effect of a magnetic mater for reading information. The rare earth transition metal alloy film has a refractive index represented by n.+-..DELTA.n wherein n=3.2-3.55i and .DELTA.n=0.05-0.03i. The thickness of film is about 18 to 46 nm. The second transparent dielectric film has a refractive index of 2.0.+-.0.2 and a film thickness of 80 to 108 nm.

75. 发明申请

US20060166469A1 Method of laser beam maching and laser beam machining apparatus 审中-公开
标题翻译：激光束加工方法和激光束加工装置
公开(公告)号：US20060166469A1
公开(公告)日：2006-07-27
申请号：US10526855
申请日：2003-09-03
申请人： Junichiro Nakayama , Shinya Okazaki
发明人： Junichiro Nakayama , Shinya Okazaki
IPC分类号： H01L21/20
CPC分类号： H01L21/02675 , H01L21/02678 , H01L21/2026
摘要： An object of the invention is to credibly crystallize an amorphous material for use as a semiconductor material and effect crystallization to a region of desired scope. A first region drawn on a surface of a layer of amorphous material formed on the surface layer of sample (21) is irradiated with laser beam to thereby effect melting, solidification and crystallization of the amorphous material. A second region drawn on the surface of the layer of amorphous material so as to partially overlap the first region is determined, and the second region is irradiated with laser beam to thereby melt the amorphous material within the second region. At the time of solidification of the molten amorphous material, epitaxial growth with the use of the crystal of the first region as a seed crystal is carried out to thereby attain crystallization. Shifting of the first and second regions to be irradiated with laser beam on the surface of the layer of amorphous material and irradiation with laser beam are repeated until the region of crystallization of the amorphous material reaches a desired scope.
摘要翻译：本发明的目的是可靠地结晶用作半导体材料的无定形材料并且将结晶化到所需范围的区域。用激光束照射在样品（21）的表面层上形成的无定形材料层的表面上绘制的第一区域，从而进行无定形材料的熔融，固化和结晶。确定在非晶材料层的表面上绘制以与第一区域部分重叠的第二区域，并且用激光束照射第二区域，从而熔化第二区域内的非晶材料。在熔融无定形材料固化时，进行利用第一区域的晶体作为晶种的外延生长，从而进行结晶化。重复将激光束照射在第一和第二区域的非晶材料层的表面上并用激光束照射，直到无定形材料的结晶区域达到期望的范围。

76. 发明授权

US06295271B1 Optical recording medium having tracks, each track having a plurality of wobble sections/one-side wobble regions 失效
标题翻译：具有轨道的光记录介质，每个轨道具有多个摆动部分/一侧摆动区域
公开(公告)号：US06295271B1
公开(公告)日：2001-09-25
申请号：US09475414
申请日：1999-12-30
申请人： Tetsuya Inui , Hideaki Sato , Junichiro Nakayama , Naoyasu Iketani , Michinobu Mieda , Yoshiteru Murakami , Junji Hirokane , Akira Takahashi
发明人： Tetsuya Inui , Hideaki Sato , Junichiro Nakayama , Naoyasu Iketani , Michinobu Mieda , Yoshiteru Murakami , Junji Hirokane , Akira Takahashi
IPC分类号： G11B724
CPC分类号： G11B7/005 , G11B7/00718 , G11B7/00745 , G11B7/0901 , G11B7/0938 , G11B7/24 , G11B7/261 , G11B11/10578 , G11B11/10582
摘要： An optical disk has address recording sections each of which has a wobbled part of one of side walls of a groove. Each address recording section is formed by providing convexes of a groove in an adjacent land so as to widen the groove. With the wobbles thus provided in a concavo-convex form, address information is recorded. Besides, the address recording sections thus provided in the grooves are linearly disposed in radial directions of the optical disk. By thus arranging the optical disk on whose grooves and/or lands information is recorded, mixing of wobble frequency components in reproduced information signals does not occur, the sector method is applicable to the optical disk, and information signals of high quality can be obtained.
摘要翻译：光盘具有地址记录部分，每个地址记录部分具有凹槽的一个侧壁的摆动部分。每个地址记录部分通过在相邻的凸台中提供凹槽的凸起来形成，以便加宽凹槽。由于以这样提供的摆动形式为凹凸形式，所以记录地址信息。此外，这样设置在凹槽中的地址记录部分在光盘的径向上线性地设置。通过这样布置记录有槽和/或焊盘信息的光盘，不会发生重放信息信号中的摆动频率分量的混合，扇区方法可应用于光盘，并且可以获得高质量的信息信号。

77. 发明授权

US06261707B1 Magneto-optical recording medium and recording and reproducing method and optical head designed for the magneto-optical recording medium 失效
标题翻译：磁光记录介质以及用于磁光记录介质的记录和再现方法和光头
公开(公告)号：US06261707B1
公开(公告)日：2001-07-17
申请号：US08147373
申请日：1993-11-03
申请人： Yoshiteru Murakami , Junji Hirokane , Junichiro Nakayama , Junsaku Nakajima , Akira Takahashi , Kenji Ohta , Naoyasu Iketani
发明人： Yoshiteru Murakami , Junji Hirokane , Junichiro Nakayama , Junsaku Nakajima , Akira Takahashi , Kenji Ohta , Naoyasu Iketani
IPC分类号： G11B566
CPC分类号： G11B7/126 , G11B7/00718 , G11B11/10506 , G11B11/10515 , G11B11/10517 , G11B11/10543 , G11B11/10584 , G11B11/10586 , G11B11/10595 , Y10S428/90
摘要： A magneto-optical recording medium is composed of a base which has a property that a light can be transmitted therethrough, a readout layer formed on the base, which has in-plane magnetization at room temperature, whereas, a transition occurs from in-plane magnetization to perpendicular magnetization as the temperature thereof is raised and a recording layer formed on the readout layer for recording information magneto-optically. A recording and reproducing method and the optical head are designed for the magneto-optical recording medium. By the recording and reproducing method using the optical head, information recorded at high density can be reproduced.
摘要翻译：磁光记录介质由具有光透射性的基底组成，形成在基底上的读出层，其在室温下具有面内磁化，而从平面内发生转变随着其温度升高，磁化至垂直磁化，以及形成在读出层上用于磁光记录信息的记录层。记录和再现方法和光学头被设计用于磁光记录介质。通过使用光学头的记录和再现方法，可以再现以高密度记录的信息。

78. 发明授权

US6042954A Magneto-optical recording medium 失效
标题翻译：磁光记录介质
公开(公告)号：US6042954A
公开(公告)日：2000-03-28
申请号：US844270
申请日：1997-04-18
申请人： Junji Hirokane , Junichiro Nakayama , Junsaku Nakajima , Akira Takahashi
发明人： Junji Hirokane , Junichiro Nakayama , Junsaku Nakajima , Akira Takahashi
IPC分类号： G11B11/10 , G11B11/105 , G11B5/66
CPC分类号： G11B11/10586 , Y10S428/90
摘要： An magneto-optical recording medium includes: a transparent dielectric layer; a reproduction layer that is in an in-plane magnetization state at room temperature and changes into a perpendicular magnetization state with a rise in temperature; a non-magnetic intermediate layer; a recording layer made of a perpendicularly magnetized film; and a protection layer, the layers being formed one after another in this order. The recording layer is made of a rare-earth and transition metal alloy, and the rare earth metal is composed of more than two kinds of rare-earth-metal elements containing Gd. The information stored in a magnetic recording domain is masked with respect to a part that is in an in-plane magnetization state. Consequently, recording can be performed with a less powerful laser beam, and each recording bit can be reproduced independently to produce high quality signals even if the converged light beam covers a neighboring recording bit within its radius.
摘要翻译：磁光记录介质包括：透明介质层; 在室温下处于面内磁化状态并随着温度升高而变成垂直磁化状态的再生层; 非磁性中间层; 由垂直磁化膜制成的记录层; 和保护层，这些层依次依次形成。记录层由稀土和过渡金属合金制成，稀土金属由含有Gd的两种以上的稀土金属元素组成。存储在磁记录领域中的信息相对于处于平面内磁化状态的部分被掩蔽。因此，可以用较不强大的激光束执行记录，并且即使会聚光束覆盖其半径内的相邻记录位，也可以独立地再现每个记录位以产生高质量信号。

79. 发明授权

US5989671A Optical recording medium and manufacturing method thereof 失效
标题翻译：光记录介质及其制造方法
公开(公告)号：US5989671A
公开(公告)日：1999-11-23
申请号：US879916
申请日：1997-06-20
申请人： Junichiro Nakayama , Hiroyuki Katayama , Akira Takahashi , Kenji Ohta , Kazuo Van
发明人： Junichiro Nakayama , Hiroyuki Katayama , Akira Takahashi , Kenji Ohta , Kazuo Van
IPC分类号： G11B5/00 , G11B7/003 , G11B7/004 , G11B7/007 , G11B7/24 , G11B7/26 , G11B11/105 , G11B13/00 , G11B13/04 , G11B20/00 , G11B23/28 , G11B5/60
CPC分类号： G11B23/281 , G11B11/10582 , G11B13/00 , G11B13/04 , G11B13/045 , G11B23/28 , G11B5/00 , G11B7/0031 , G11B7/24 , G11B7/26 , G11B11/10502 , G11B20/00086 , G11B7/004 , G11B7/007 , Y10S428/90 , Y10T428/265
摘要： An optical tape including an optical recording layer for permitting information to be optically recorded thereon and a light-reflective magnetic layer. The light-reflective magnetic layer which reflects light projected onto the recording layer, also permits magnetic recording or magneto-optical recording to be performed thereon, thereby increasing a storage capacity of the optical tape remarkably. Further, the optical tape is provided with a layer to form guiding grooves for tracking control. The layer to form guiding grooves is made up of ultraviolet-hardening resin, photo-resist, or a photochromic material. For example, in the case of using ultraviolet-hardening resin, after a guiding groove pattern has been exposed by projecting an ultraviolet ray on a layer made up of ultraviolet-hardening resin, the exposed areas harden to form areas corresponding to guiding grooves between those exposed areas. The guiding grooves are formed by removing the areas corresponding to guiding grooves from the layer made up of the ultraviolet-hardening resin. Additionally, along with a guiding groove pattern, an index pattern can also be exposed. The guiding grooves thus formed do not reduce the recording density for information of the optical tape.
摘要翻译：一种光学带，包括用于允许光学记录信息的光学记录层和光反射性磁性层。反射投影到记录层上的光的光反射性磁性层也可以在其上进行磁记录或磁光记录，从而显着提高光带的存储容量。此外，光带设置有一层以形成用于跟踪控制的引导槽。形成导向槽的层由紫外线硬化树脂，光致抗蚀剂或光致变色材料构成。例如，在使用紫外线硬化树脂的情况下，通过在由紫外线固化型树脂构成的层上投射紫外线而引导槽图案露出后，露出的区域变硬，形成与引导槽对应的区域暴露地区。通过从由紫外线固化树脂构成的层去除与导向槽相对应的区域来形成引导槽。另外，与引导槽图案一样，还可以暴露索引图案。如此形成的引导槽不会降低用于光带的信息的记录密度。

80. 发明授权

US5939187A Magneto-optical recording medium 失效
标题翻译：磁光记录介质
公开(公告)号：US5939187A
公开(公告)日：1999-08-17
申请号：US859614
申请日：1997-05-20
申请人： Junji Hirokane , Junichiro Nakayama , Akira Takahashi
发明人： Junji Hirokane , Junichiro Nakayama , Akira Takahashi
IPC分类号： G11B11/10 , G11B11/105 , G11B5/66
CPC分类号： G11B11/10586 , Y10S428/90 , Y10T428/26 , Y10T428/265
摘要： A magneto-optical recording medium includes a reproducing layer which has in-plane magnetization at room temperature and has perpendicular magnetization at an elevated temperature of not less than a critical temperature, a recording layer made of a perpendicular magnetization film for recording information, an intermediate layer made of a non-magnetic film formed between the reproducing layer and the recording layer, and an in-plane magnetization layer adjacent to the reproducing layer, in which magnetization is reduced at a temperature in a vicinity of the critical temperature. According to the described magneto-optical recording medium, since information recorded in a recording magnetic domain of a portion having the in-plane magnetization is masked, even in the case where adjacent recording bits fall within a diameter of a spot of a converged light beam, each recording bit can be reproduced separately, thereby obtaining a quality reproduced signal.
摘要翻译：磁光记录介质包括在室温下具有面内磁化并且在不低于临界温度的升高的温度下具有垂直磁化的再现层，由用于记录信息的垂直磁化膜制成的记录层，中间层由形成在再现层和记录层之间的非磁性膜制成的层以及与再现层相邻的面内磁化层，其中磁化在临界温度附近的温度下降低。根据所述的磁光记录介质，由于记录在具有面内磁化的部分的记录磁畴中的信息被掩蔽，所以即使在相邻记录位落入会聚光束的光点的直径的情况下，可以分别再现每个记录位，从而获得质量再现信号。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式