公开(公告)号：US6017620A

公开(公告)日：2000-01-25

申请号：US055961

申请日：1998-04-07

申请人： Jiro Yoshinari ,  Shinji Miyazaki ,  Hiroyasu Inoue

发明人： Jiro Yoshinari ,  Shinji Miyazaki ,  Hiroyasu Inoue

IPC分类号： G11B11/105 ,  B05D3/04

CPC分类号： G11B11/10586 ,  G11B11/10521 ,  G11B11/10584 ,  Y10S428/90

摘要： The invention is directed at a magneto-optical recording medium which is directly overwritable by light intensity modulation, does not require an initializing magnet, and has on the surface side of a substrate four magnetic layers, a memory layer M.sub.1, a writing layer W.sub.2, a switching layer S.sub.3, and an initializing layer I.sub.4. The magnetic layers each contain a rare earth element and a transition element, have perpendicular magnetic anisotropy at room temperature, and satisfy the relationships:Tc.sub.I4 >Tc.sub.W2 >Tc.sub.M1 and Tc.sub.I4 >Tc.sub.W2 >Tc.sub.S3wherein Tc.sub.M1, Tc.sub.W2, Tc.sub.S3 and Tc.sub.I4 are the Curie temperatures of M.sub.1, W.sub.2, S.sub.3 and I.sub.4, respectively. Writing layer W.sub.2 is composed mainly of dysprosium, iron and cobalt, contains from 29-35 atomic percent of rare earth elements, and has an atomic ratio Fe/(Fe+Co) of from 0.40 to 0.58. This medium has an improved CNR, minimizes deterioration in the CNR with repeated overwriting, enhances storage reliability, and has an increased output.

摘要翻译： 本发明涉及一种通过光强度调制直接覆盖的磁光记录介质，不需要初始化磁体，并且在基板的表面侧上具有四个磁性层，存储层M1，书写层W2， 开关层S3和初始化层I4。 磁性层各自含有稀土元素和过渡元素，在室温下具有垂直的磁各向异性，并且满足TcI4> TcW2> TcM1和TcI4> TcW2> TcS3的关系，其中TcM1，TcW2，TcS3和TcI4为居里温度 分别为M1，W2，S3和I4。 写作层W2主要由镝，铁和钴组成，含有29-35原子％的稀土元素，原子比Fe /（Fe + Co）为0.40〜0.58。 该介质具有改进的CNR，可以最大程度地减少CNR的恶化，反复重写，提高存储可靠性，并增加输出。

公开(公告)号：US5221322A

公开(公告)日：1993-06-22

申请号：US856370

申请日：1992-03-23

申请人： Yasumichi Tokuoka ,  Jiro Yoshinari

发明人： Yasumichi Tokuoka ,  Jiro Yoshinari

IPC分类号： B22F9/12 ,  B22F9/28 ,  G11B5/706 ,  H01F1/11

CPC分类号： B22F9/28 ,  B22F9/12 ,  G11B5/70626 ,  H01F1/11

摘要： Ultrafine particles of Fe-Co-P material with a Fe/Co atomic ratio of from 95/5 to 70/30 and a (Fe+Co)/P atomic ratio of from 85/15 to 60/40 show improved ferromagnetic properties. The average particle size is from 0.005 to 0.1 .mu.m. Such ultrafine particles are prepared through gas phase reaction by evaporating a source material. They are useful in both magnetic and thermomagnetic recording media ensuring high density recording.

摘要翻译： Fe / Co原子比为95/5〜70/30，（Fe + Co）/ P原子比为85/15〜60/40的Fe-Co-P材料的超微粒子显示出改善的铁磁特性。 平均粒径为0.005〜0.1μm。 通过蒸发源材料通过气相反应制备这种超细颗粒。 它们在确保高密度记录的磁性和热磁记录介质中都是有用的。

公开(公告)号：US07580340B2

公开(公告)日：2009-08-25

申请号：US11287323

申请日：2005-11-28

申请人： Hiroshi Shingai ,  Jiro Yoshinari ,  Hideaki Miura

发明人： Hiroshi Shingai ,  Jiro Yoshinari ,  Hideaki Miura

IPC分类号： G11B7/24

CPC分类号： G11B7/243 ,  G11B7/00375 ,  G11B7/006 ,  G11B7/259 ,  G11B2007/24312 ,  G11B2007/24314

摘要： An optical recording medium and a method for testing that optical recording medium are provided, which can prevent degradation of a reproduction signal in the case where the optical recording medium is stored at a high temperature for a long time, which enables stable recording and reproduction of data before and after the high-temperature storage, and which can achieve high-speed recording and increase of recording density. In the optical recording medium, a reproduction signal output of a recording mark after high-temperature storage that is formed in a recording layer after the optical recording medium is stored at a storage temperature t in a range from 60° C. to 90° C. for at least 50−(4/3)(t−60) hours is 0.9 times or more a reproduction signal output of a recording mark before the high-temperature storage that has the same bit length as the recording mark after the high-temperature storage and is formed before the above high-temperature storage.

摘要翻译： 提供一种用于测试该光记录介质的光学记录介质和方法，其可以防止光记录介质长时间在高温下存储的情况下的再现信号的劣化，这使得能够稳定地记录和再现 数据在高温存储之前和之后，并且可以实现高速记录和增加记录密度。 在光记录介质中，在光记录介质在形成于光记录介质的存储温度t在60℃至90℃的范围内的高温储存之后的记录标记的再现信号输出 对于至少50-（4/3）（t-60）小时，在高温存储之前的记录标记的再现信号输出是与高速存储器之后的记录标记相同的位长度的0.9倍或更多， 在上述高温储存之前形成。

公开(公告)号：US07471606B2

公开(公告)日：2008-12-30

申请号：US11209826

申请日：2005-08-24

申请人： Tetsuro Mizushima ,  Hideaki Miura ,  Tatsuya Kato ,  Hironori Kakiuchi ,  Hiroshi Shingai ,  Jiro Yoshinari

发明人： Tetsuro Mizushima ,  Hideaki Miura ,  Tatsuya Kato ,  Hironori Kakiuchi ,  Hiroshi Shingai ,  Jiro Yoshinari

IPC分类号： G11B7/00

CPC分类号： G11B7/0062 ,  G11B7/24038 ,  G11B2007/0013

摘要： An information recording method enables the precise formation of a recording mark on a recording layer having a high light transmittance such as an L1 layer of a double-layered optical recording medium. The information recording method uses the following recording strategy. A laser beam is pulse-modulated so as to create a pulse series including a write pulse of a recording power and a cooling pulse of a base power. Data to be recorded is modulated to have a length of a recording mark along a track of the recording layer. At the same time, the length of the recording mark is made to correspond to an integral multiple nT of T where T is one clock cycle. An nT recording mark corresponding to nT is recorded by using the same number of write pulses and cooling pulses when n is 4 or larger. Moreover, an average width AveTc for a single cooling pulse width Tc is set to satisfy: 1.0

摘要翻译： 信息记录方法能够在具有高透光率的记录层上精确地形成记录标记，例如双层光记录介质的L1层。 信息记录方法使用以下记录策略。 激光束被脉冲调制，以产生包括记录功率的写入脉冲和基本功率的冷却脉冲的脉冲序列。 要记录的数据被调制成具有沿着记录层的轨道的记录标记的长度。 同时，使记录标记的长度对应于T的整数倍nT，其中T是一个时钟周期。 当n为4以上时，通过使用相同数量的写入脉冲和冷却脉冲来记录对应于nT的nT记录标记。 此外，将单个冷却脉冲宽度Tc的平均宽度AveTc设定为满足：1.0

公开(公告)号：US07236440B2

公开(公告)日：2007-06-26

申请号：US10480922

申请日：2002-09-11

申请人： Tetsuro Mizushima ,  Jiro Yoshinari ,  Isamu Kuribayashi ,  Masaki Aoshima ,  Koji Mishima

发明人： Tetsuro Mizushima ,  Jiro Yoshinari ,  Isamu Kuribayashi ,  Masaki Aoshima ,  Koji Mishima

IPC分类号： G11B7/24

CPC分类号： G11B7/00455 ,  G11B7/243 ,  G11B7/257 ,  G11B7/259 ,  G11B2007/24306 ,  G11B2007/2431 ,  G11B2007/24314

摘要： A high-speed, write-once type optical recording medium, which utilizes laser light that is either blue or an even shorter wavelength, as well as an optical recording method and an optical recording apparatus for recording onto this optical recording medium.A high-speed, write-once type optical recording medium 10 having a recording layer 18 and a light transmission layer 22 formed sequentially on top of a support substrate 12, wherein the recording layer 18 is formed by laminating first and second vice-recording layers 18A, 18B which include Al and Sb respectively as primary components, and irradiation of a laser light of blue wavelength from a laser light source 24, through the light transmission layer 22 and onto the recording layer 18, causes diffusion and mixing of the Al and Sb contained within the first and second vice-recording layers 18A, 18B, and this mixing enables the formation of a recording mark based on an irreversible change in reflectance. The thickness of the recording layer 18 is set to enable recording at a recording transfer rate of at least 35 Mbps.

摘要翻译： 使用蓝色或甚至更短波长的激光的高速，一次写入型光学记录介质以及用于记录在该光学记录介质上的光学记录方法和光学记录装置。 具有依次形成在支撑基板12上的记录层18和光透射层22的高速，一次写入型光记录介质10，其中记录层18通过层叠第一和第二副记录层 分别包括Al和Sb作为主要成分的18A，18B以及来自激光源24的蓝色波长的激光，通过光透射层22和记录层18的照射使得扩散和混合 Al和Sb包含在第一和第二副记录层18A，18B内，并且该混合使得能够基于反射率的不可逆变化形成记录标记。 记录层18的厚度被设定为能够以至少35Mbps的记录传送速率​​进行记录。

公开(公告)号：US07110335B2

公开(公告)日：2006-09-19

申请号：US10498216

申请日：2002-12-06

申请人： Tetsuro Mizushima ,  Jiro Yoshinari

发明人： Tetsuro Mizushima ,  Jiro Yoshinari

IPC分类号： G11B7/00 ,  G11B7/24

CPC分类号： G11B7/242 ,  G11B7/004 ,  G11B7/00455 ,  G11B7/0052 ,  G11B7/126 ,  G11B7/243 ,  G11B7/258 ,  G11B7/259 ,  G11B2007/2431 ,  G11B2007/24314

摘要： A write-once type optical recording medium is provided, which is low-cost and capable of maintaining the recording and reproducing stability high while enabling the relative ratio of read power to write power to be set high.The high-speed write-once type optical recording medium 10 includes a recording layer 18 that is constituted by laminating first and second subsidiary recording layers 18A and 18B each having one type of metal, for example Al and Sb respectively, as the main component. In the optical recording medium 10 having such constitution, the ratio between write power Pw and read power Pr, Pw/Pr is set to a value in the range of 2.0 to 8.0. When the recording layer 18 is irradiated with laser beam with a wavelength of 200 nm to 450 nm and a write power Pw of 2.5 to 5.0 mW at a recording-transferring rate of at least 35 Mps, Al and Sb contained in the subsidiary recording layers 18A and 18B respectively are diffused and mixed by the irradiation to form a recording mark that has a low reflectance, has been transformed to a single layer, and has been changed irreversibly.

摘要翻译： 提供了一种成对写入型光记录介质，其低成本并且能够将读取功率与写入功率的相对比率设置为高而能够保持高的记录和再现稳定性。 高速一次写入型光学记录介质10包括记录层18，其通过层压分别具有一种类型的金属（例如Al和Sb）的第一和第二辅助记录层18A和18B作为主要 零件。 在具有这种结构的光记录介质10中，写功率Pw与读功率Pr，Pw / Pr之比被设定为2.0〜8.0的范围。 当记录层18以至少35Mps的记录传送速率​​照射波长为200nm至450nm的激光束和2.5至5.0mW的写入功率Pw时，包含在辅助记录层中的Al和Sb 18A和18B分别通过照射被扩散和混合以形成具有低反射率的记录标记，已被转换为单层，并且已经不可逆地改变。

公开(公告)号：US20060072436A1

公开(公告)日：2006-04-06

申请号：US10511876

申请日：2003-04-22

申请人： Tetsuro Mizushima ,  Jiro Yoshinari

发明人： Tetsuro Mizushima ,  Jiro Yoshinari

IPC分类号： G11B7/24

CPC分类号： G11B7/24038

摘要： It is an object of the present invention to provide a data rewritable type optical recording medium which includes a plurality of recording layers and in which data reading characteristics and reproducing characteristics of the respective recording layers can be improved. An optical recording medium according to the present invention includes an L1 recording layer 30 and an L0 recording layer 20 formed on a support substrate 11, and a transparent intermediate layer 12 formed between the L1 recording layer 30 and the L0 recording layer 20. The L0 recording layer 20 includes a recording film 24, a first dielectric film 25 disposed in contact with the recording film 24 on the side of the light incidence plane 13a, a second dielectric film 23 disposed in contact with the recording film 24 on the side of the support substrate 11, a transparent heat radiation film 26 disposed in contact with the first dielectric film 25 on the side of the light incidence plane 13a, a translucent reflective film 22 disposed in contact with the second dielectric film 23 on the side of the support substrate 11 and a base protect film 21 disposed between the translucent reflective film 22 and the transparent intermediate layer 12. The thickness of the second dielectric film 23 is set to be thinner than 15 nm and the thickness of the translucent reflective film 22 is set to be thinner than 20 nm.

摘要翻译： 本发明的目的是提供一种数据可重写型光学记录介质，其包括多个记录层，并且可以提高各个记录层的数据读取特性和再现特性。 根据本发明的光记录介质包括形成在支撑基板11上的L1记录层30和L0记录层20以及形成在L1记录层30和L0记录层20之间的透明中间层12。 L0记录层20包括记录膜24，与光入射面13a一侧的记录膜24相接触地设置的第一电介质膜25，与记录膜24接触的第二电介质膜23 支撑基板11的一侧，与光入射面13a一侧与第一电介质膜25接触配置的透明散热膜26，与侧面的第二电介质膜23接触配置的透光性反射膜22 和设置在透光性反射膜22和透明中间层12之间的基底保护膜21。 第二电介质膜23的厚度设定为比15nm薄，透光性反射膜22的厚度设定为比20nm薄。

公开(公告)号：US20050259552A1

公开(公告)日：2005-11-24

申请号：US10630476

申请日：2003-07-30

申请人： Hideaki Miura ,  Jiro Yoshinari ,  Tetsuro Mizushima

发明人： Hideaki Miura ,  Jiro Yoshinari ,  Tetsuro Mizushima

IPC分类号： G11B7/00 ,  G11B7/004 ,  G11B7/20 ,  G11B7/26 ,  G11B11/10

CPC分类号： G11B7/268 ,  G11B7/24038 ,  G11B7/266

摘要： A method for initializing recording films of an optical recording medium includes two recording layers each including a recording film and which is formed so that a transparent intermediate layer is interposed between each adjacent pair of the recording layers, by projecting a laser beam whose power can be controlled within a predetermined range onto the recording films and simultaneously crystallizing and initializing the recording films, the method for initializing recording films of an optical recording medium including steps of setting a power of the laser beam and a position of a focus of the laser beam so that energy of the laser beam projected onto each of the recording films is equal to or higher than a minimum initialization energy which can crystallize and initialize the recording film irradiated with the laser beam, and projecting the laser beam onto the recording films of the optical recording medium. According to this method, it is possible to efficiently simultaneously crystallize and initialize recording films of the two recording layers of an optical recording medium with an apparatus of simple structure.

摘要翻译： 用于初始化光记录介质的记录膜的方法包括两个记录层，每个记录层包括记录膜，并且其形成为透明中间层插入在相邻的一对记录层之间，通过投射能量可以是 控制在记录膜上的预定范围内并同时结晶和初始化记录膜，用于初始化光记录介质的记录膜的方法包括设置激光束的功率和激光束的焦点位置的步骤 投影到每个记录膜上的激光束的能量等于或高于可以结晶并初始化用激光束照射的记录膜的最小初始化能量，并将激光束投影到光学记录的记录膜上 中。 根据该方法，可以通过结构简单的装置有效地同时结晶和初始化光记录介质的两个记录层的记录膜。

公开(公告)号：US20050018589A1

公开(公告)日：2005-01-27

申请号：US10499878

申请日：2002-12-06

申请人： Tetsuro Mizushima ,  Koji Mishima ,  Jiro Yoshinari

发明人： Tetsuro Mizushima ,  Koji Mishima ,  Jiro Yoshinari

IPC分类号： B41M5/26 ,  G11B7/0045 ,  G11B7/125 ,  G11B7/24 ,  G11B7/243

CPC分类号： G11B7/00456

摘要： To obtain a write-once high density optical recording medium capable of a high speed recording, and to effectively form space between recording marks. The recording layer 18 of the high speed write-once optical recording medium 10 is formed by laminating a first sub recording layer 18A and a second sub recording layer 18B each containing a metal as its main component. When the recording layer (laminated recording layer) 18 is irradiated with a laser beam, the main component metals contained in the first and second sub recording layers 18A, 18B diffuse and are mixed together by means of the irradiation, thereby forming recording marks whose reflectance have been irreversibly changed due to such mixing. At this time, after an irradiation using a laser beam for forming recording marks, a power level P1 lower than a read power is maintained for a predetermined time T1.

摘要翻译： 获得能够高速记录的一次写入式高密度光学记录介质，并有效地形成记录标记之间的空间。 高速一次写入光学记录介质10的记录层18通过层叠以金属为主要成分的第一子记录层18A和第二副记录层18B而形成。 当用激光束照射记录层（层叠记录层）18时，通过照射将包含在第一和第二子记录层18A，18B中的主要成分金属扩散并混合在一起，从而形成其反射率 由于这种混合而不可逆转地变化。 此时，在使用用于形成记录标记的激光束进行照射之后，将比读取功率低的功率电平P1保持预定时间T1。

公开(公告)号：US06733858B2

公开(公告)日：2004-05-11

申请号：US09968548

申请日：2001-10-02

申请人： Tetsuro Mizushima ,  Jiro Yoshinari

发明人： Tetsuro Mizushima ,  Jiro Yoshinari

IPC分类号： B32B302

CPC分类号： G11B7/257 ,  G11B7/00454 ,  G11B7/243 ,  G11B7/258 ,  G11B2007/24314 ,  G11B2007/24316 ,  G11B2007/25706 ,  Y10T428/21

摘要： Provided is a medium having a phase change recording layer wherein crystallization of the recording layer is facilitated, and at the same time, wherein the region to be crystallized is crystallized at an accurate dimension. The optical recording medium has a recording layer 4 comprising at least one phase change layer 41 and at least one functional layer 42 in contact with said phase change layer. The phase change layer 41 in its as-deposited state is amorphous, and crystals having Fm3m structure or R3m structure are produced upon crystallization of this layer. The functional layer 42 in its as-deposited state is crystalline, and contains crystals having Fm3m structure. The material used for the functional layer 42 is the one which exhibits a thermal conductivity of 0.03 to 5 W/cmK as measured in thin film form of 100 nm thick.

摘要翻译： 提供了一种具有相变记录层的介质，其中促进了记录层的结晶，同时其中待结晶的区域以精确的尺寸结晶。 光记录介质具有包含至少一个相变层41和与所述相变层接触的至少一个功能层42的记录层4。 其沉积状态的相变层41是非晶态的，并且在该层结晶时产生具有Fm3m结构或R3m结构的晶体。 其沉积状态的功能层42是结晶的，并且含有具有Fm3m结构的晶体。 用于功能层42的材料是以100nm厚的薄膜形式表现出0.03至5W / cmK的热导率的材料。