公开(公告)号：US20090135711A1

公开(公告)日：2009-05-28

申请号：US12352304

申请日：2009-01-12

申请人： Takashi KIKUKAWA ,  Tatsuya Kato ,  Hajime Utsunomiya ,  Hiroshi Shingai

发明人： Takashi KIKUKAWA ,  Tatsuya Kato ,  Hajime Utsunomiya ,  Hiroshi Shingai

IPC分类号： G11B7/00

CPC分类号： G11B7/005 ,  G11B7/1263 ,  G11B7/24

摘要： An information readout method for an optical information medium comprising an information recording layer having pits or recorded marks representative of information data involves the step of irradiating a laser beam to the information recording layer through an objective lens for providing readings of the pits or recorded marks. When the laser beam has a wavelength λ of 400 to 410 nm, the objective lens has a numerical aperture NA of 0.70 to 0.85, and the pits or recorded marks have a minimum size PL of up to 0.36λ/NA, readout is carried out at a power Pr of at least 0.4 mW for the laser beam. When the laser beam has a wavelength λ of 630 to 670 nm, the objective lens has a numerical aperture NA of 0.60 to 0.65, and the pits or recorded marks have a minimum size PL of up to 0.36λ/NA, readout is carried out at a power Pr of at least 1.0 mW for the laser beam. Pits or recorded marks of a size approximate to the resolution limit determined by diffraction can be read out at a high C/N.

摘要翻译： 包括具有表示信息数据的凹坑或记录标记的信息记录层的光信息介质的信息读出方法包括通过用于提供凹坑或记录标记的读数的物镜将激光束照射到信息记录层的步骤。 当激光束具有400至410nm的波长λ时，物镜的数值孔径NA为0.70至0.85，并且凹坑或记录标记具有高达0.36λ/ NA的最小尺寸PL，读出被执行 在激光束的功率Pr为至少0.4mW。 当激光束具有630至670nm的波长λ时，物镜的数值孔径NA为0.60至0.65，并且凹坑或记录的标记具有高达0.36λ/ NA的最小尺寸PL，读出被执行 在激光束的功率Pr为至少1.0mW。 通过衍射确定的大小接近分辨率极限的刻痕或记录标记可以高C / N读出。

公开(公告)号：US07227832B2

公开(公告)日：2007-06-05

申请号：US10502000

申请日：2003-01-29

申请人： Hiroshi Shingai ,  Tatsuya Kato ,  Hajime Utsunomiya

发明人： Hiroshi Shingai ,  Tatsuya Kato ,  Hajime Utsunomiya

IPC分类号： G11B7/24

CPC分类号： G11B7/24035 ,  G11B7/252 ,  G11B7/259 ,  G11B2007/24306 ,  G11B2007/2431 ,  G11B2007/24312 ,  G11B2007/24314 ,  G11B2007/24316 ,  G11B2007/25708 ,  G11B2007/25715

摘要： It is an object of the present invention to provide an optical recording medium that is suitable for recording information therein at a high velocity. An optical recording medium according to the present invention includes a recording layer formed of a phase change material and capable of recording data therein at a linear recording velocity equal to or higher than 10 m/sec, wherein Rtop satisfies the condition that it is larger than {11−(V/5)} and smaller than {22−(2V/5)}, where Rtop (%) is a reflectivity of the crystal phase change material forming the recording layer and V (m/sec) is a target linear recording velocity. According to the present invention, since modulation (MOD) of 50% or more can be ensured, it is possible to effectively suppress the degradation of jitter caused by recording data at a high linear recording velocity equal to or higher than 10 m/sec.

摘要翻译： 本发明的目的是提供一种适合于以高速记录信息的光记录介质。 根据本发明的光记录介质包括由相变材料形成并能够以等于或高于10m / sec的线性记录速度记录数据的记录层，其中Rtop满足大于 {11-（V / 5且小于{22-（2V / 5，其中Rtop（％）是形成记录层的晶体相变材料的反射率，V（m / sec））是目标线性记录速度。 根据本发明，由于可以确保50％以上的调制（MOD）（MOD），所以可以有效地抑制由高于10m /秒的高线性记录速度的记录数据引起的抖动的劣化。

公开(公告)号：US6103330A

公开(公告)日：2000-08-15

申请号：US75846

申请日：1998-05-12

申请人： Masanori Kosuda ,  Hajime Utsunomiya ,  Hiroshi Shingai ,  Takuya Tsukagoshi

发明人： Masanori Kosuda ,  Hajime Utsunomiya ,  Hiroshi Shingai ,  Takuya Tsukagoshi

IPC分类号： B41M5/26 ,  C23C14/00 ,  C23C14/06 ,  C23C14/34 ,  G11B7/243 ,  G11B7/26 ,  B32B3/00

CPC分类号： G11B7/266 ,  C23C14/0036 ,  C23C14/06 ,  G11B7/243 ,  G11B2007/24308 ,  G11B2007/2431 ,  G11B2007/24314 ,  G11B2007/24316 ,  G11B7/00454 ,  G11B7/258 ,  G11B7/2595 ,  Y10S428/913 ,  Y10S430/146 ,  Y10T428/21

摘要： The invention provides a method of fabricating an optical recording medium comprising a phase change type recording layer containing at least one element selected from In, Ag, Te and Sb. The recording layer is formed by a sputtering technique wherein sputtering is carried out while an inert gas and an oxygen gas are introduced in a vacuum chamber in a sputtering system, so that the number of overwritable cycles can be increased by simple means.

摘要翻译： 本发明提供一种制造光记录介质的方法，该光记录介质包括含有选自In，Ag，Te和Sb中的至少一种元素的相变型记录层。 记录层通过溅射技术形成，其中在惰性气体和氧气被引入溅射系统中的真空室中进行溅射，从而可以通过简单的手段增加可重写周期的数量。

公开(公告)号：US6030679A

公开(公告)日：2000-02-29

申请号：US131864

申请日：1998-08-10

申请人： Takao Saito ,  Hiroshi Shingai ,  Tatsuya Kato ,  Hajime Utsunomiya ,  Katsuaki Yanagiuchi

发明人： Takao Saito ,  Hiroshi Shingai ,  Tatsuya Kato ,  Hajime Utsunomiya ,  Katsuaki Yanagiuchi

IPC分类号： G11B7/24 ,  G11B7/243 ,  G11B7/257 ,  G11B7/26 ,  B32B3/00

CPC分类号： G11B7/26 ,  G11B7/2403 ,  G11B7/243 ,  G11B7/257 ,  G11B2007/24308 ,  G11B2007/2431 ,  G11B2007/24316 ,  G11B2007/25706 ,  G11B2007/2571 ,  G11B2007/25715 ,  G11B2007/25716 ,  G11B7/00454 ,  G11B7/24 ,  G11B7/2534 ,  G11B7/2542 ,  G11B7/258 ,  G11B7/2585 ,  G11B7/2595 ,  Y10S428/913 ,  Y10S430/146 ,  Y10T428/21

摘要： An optical recording medium comprises a substrate and a multilayer structure on the substrate. The multilayer structure comprises a phase change type recording layer and a pair of dielectric layers, at least one of which contains zinc sulfide optionally with silicon oxide. When a depth profile of the multilayer structure in a thickness direction thereof is found by Auger electron spectroscopy, a region having an intensity ratio S/Zn of 2 or lower exists across a thickness of at least 6.0 nm, calculated as SiO.sub.2, from the vicinity of an interface between the dielectric layer and the recording layer into the recording layer. In the vicinity of the interface between the dielectric layer and the recording layer, there is also a region having an intensity ratio S/Zn vs. O/Si relation that satisfies S/Zn

摘要翻译： 光学记录介质包括基底和基底上的多层结构。 多层结构包括相变型记录层和一对电介质层，其中至少一层含有任选含有氧化硅的硫化锌。 通过俄歇电子能谱法发现其厚度方向上的多层结构的深度分布，从附近存在以SiO 2计算的至少6.0nm的厚度的区域，其强度比S / Zn为2以下。 介电层和记录层之间的界面的记录层。 在电介质层和记录层之间的界面附近，还存在具有满足S / Zn

公开(公告)号：US07960006B2

公开(公告)日：2011-06-14

申请号：US12010163

申请日：2008-01-22

申请人： Hiroshi Shingai ,  Tatsuya Kato ,  Masanori Kosuda ,  Hiroshi Takasaki ,  Hideki Hirata ,  Hajime Utsunomiya

发明人： Hiroshi Shingai ,  Tatsuya Kato ,  Masanori Kosuda ,  Hiroshi Takasaki ,  Hideki Hirata ,  Hajime Utsunomiya

IPC分类号： B32B3/02

CPC分类号： G11B7/24038 ,  G11B7/2433 ,  G11B7/2578 ,  G11B7/259 ,  G11B2007/24312 ,  G11B2007/24314 ,  G11B2007/24316 ,  G11B2007/25706 ,  G11B2007/25715 ,  Y10T428/21

摘要： A next-generation optical recording medium has two or more information layers which include a translucent information layer. The translucent information layer has a recording film and an interface layer, provided adjacent to the recording film on the side of the light incident surface. The recording film is made of a phase change material having SbxTeyGez elements and elemental ratios. Y satisfies 5≦y≦15 and z satisfies 5≦z≦15. When In having an elemental ratio of a is further added and x+y+z+a=100 holds, a satisfies 4≦a≦15. The interface layer comprises of ZrO2—Cr2O3 film thickness of which is in a range of from 2 nm to 10 nm. When ZrO2:Cr2O3═C:D (mol %), the compositional ratios ZrO2 and Cr2O3 in the ZrO2—Cr2O3 film, holds, the C satisfies 20≦C≦90, and the D satisfies 10≦D≦80, and the C and the D satisfy C+D=100. The ZrO2 is stabilized ZrO2 which contains Y2O3, when ZrO2:Y2O3=(100−X):X (mol %), the compositional ratios ZrO2 and Y2O3 in the stabilized ZrO2, holds, the X satisfies 2≦X≦10.

摘要翻译： 下一代光记录介质具有包括半透明信息层的两个或多个信息层。 半透明信息层具有记录膜和界面层，与光入射表面侧的记录膜相邻。 记录膜由具有SbxTeeyGez元素和元素比的相变材料制成。 Y满足5＆nlE; y＆nlE; 15和z满足5＆nlE; z＆nlE; 15。 当进一步添加具有a的元素比率的In并且x + y + z + a = 100成立时，a满足4＆nlE; a＆nlE; 15。 界面层由ZrO 2 -Cr 2 O 3膜厚度在2nm至10nm的范围内。 当ZrO 2：Cr 2 O 3 = C：D（摩尔％）时，ZrO 2 -Cr 2 O 3膜中的ZrO 2和Cr 2 O 3的组成比保持为C，满足20＆nlE; C＆nlE; 90，D满足10＆nlE; D＆nlE; 80，C D满足C + D = 100。 当ZrO 2：Y 2 O 3 =（100-X）：X（摩尔％）时，ZrO 2为稳定的含有Y 2 O 3的ZrO 2，稳定的ZrO 2中的ZrO 2和Y 2 O 3的组成比例成立，X满足2＆nlE; X＆nlE; 10。

公开(公告)号：US20050237912A1

公开(公告)日：2005-10-27

申请号：US11168475

申请日：2005-06-29

申请人： Takashi Kikukawa ,  Hajime Utsunomiya ,  Hiroshi Shingai ,  Tatsuya Kato

发明人： Takashi Kikukawa ,  Hajime Utsunomiya ,  Hiroshi Shingai ,  Tatsuya Kato

IPC分类号： G11B7/005 ,  G11B7/24 ,  G11B7/26

CPC分类号： G11B7/24085 ,  B82Y10/00 ,  G11B7/0052 ,  G11B7/24

摘要： In an optical information medium having an information bearing surface having projections and depressions and/or capable of forming recorded marks, a functional layer is added. The information borne on the information bearing surface can be read by using reading light of a wavelength longer than 4NA·PL wherein PL is the minimum size of the projections and depressions or the recorded marks and NA is the numerical aperture of a reading optical system, setting the power of the reading light within such a range that the functional layer does not change its complex index of refraction, and irradiating the reading light to the information bearing surface constructed by the functional layer or to the information bearing surface through the functional layer or to the functional layer through the information bearing surface. The medium enables reading at a high resolution beyond the diffraction limit.

摘要翻译： 在具有具有凹凸和/或能够形成记录标记的信息承载面的光信息介质中，添加功能层。 可以通过使用长于4NA的波长的读取光读取承载在信息承载表面上的信息。其中P L L是最小尺寸的凹凸 或记录标记，NA是读取光学系统的数值孔径，将读取光的功率设定在功能层不改变其复杂折射率的范围内，并将读取光照射到信息承载面 通过功能层或信息承载表面通过功能层或通过信息承载表面到功能层构成。 该介质能够以超过衍射极限的高分辨率进行读取。

公开(公告)号：US20050041568A1

公开(公告)日：2005-02-24

申请号：US10502000

申请日：2003-01-29

申请人： Hiroshi Shingai ,  Tatsuya Kato ,  Hajime Utsunomiya

发明人： Hiroshi Shingai ,  Tatsuya Kato ,  Hajime Utsunomiya

IPC分类号： G11B7/24 ,  G11B7/0045

CPC分类号： G11B7/24035 ,  G11B7/252 ,  G11B7/259 ,  G11B2007/24306 ,  G11B2007/2431 ,  G11B2007/24312 ,  G11B2007/24314 ,  G11B2007/24316 ,  G11B2007/25708 ,  G11B2007/25715

摘要： It is an object of the present invention to provide an optical recording medium that is suitable for recording information therein at a high velocity. An optical recording medium according to the present invention includes a recording layer formed of a phase change material and capable of recording data therein at a linear recording velocity equal to or higher than 10 m/sec, wherein Rtop satisfies the condition that it is larger than {11−(V/5)} and smaller than {22−(2V/5)}, where Rtop (%) is a reflectivity of the crystal phase change material forming the recording layer and V (m/sec) is a target linear recording velocity. According to the present invention, since modulation (MOD) of 50% or more can be ensured, it is possible to effectively suppress the degradation of jitter caused by recording data at a high linear recording velocity equal to or higher than 10 m/sec.

摘要翻译： 本发明的目的是提供一种适合于以高速记录信息的光记录介质。 根据本发明的光记录介质包括由相变材料形成并能够以等于或高于10m / sec的线性记录速度记录数据的记录层，其中Rtop满足大于 {11-（V / 5）}且小于{22-（2V / 5）}，其中Rtop（％）是形成记录层的晶体相变材料的反射率，V（m / sec） 线性记录速度。 根据本发明，由于可以确保50％以上的调制（MOD）（MOD），所以可以有效地抑制由高于10m /秒的高线性记录速度的记录数据引起的抖动的劣化。

公开(公告)号：US07859968B2

公开(公告)日：2010-12-28

申请号：US12352304

申请日：2009-01-12

申请人： Takashi Kikukawa ,  Tatsuya Kato ,  Hajime Utsunomiya ,  Hiroshi Shingai

发明人： Takashi Kikukawa ,  Tatsuya Kato ,  Hajime Utsunomiya ,  Hiroshi Shingai

IPC分类号： G11B7/0045

CPC分类号： G11B7/005 ,  G11B7/1263 ,  G11B7/24

摘要： An information readout method for an optical information medium comprising an information recording layer having pits or recorded marks representative of information data involves the step of irradiating a laser beam to the information recording layer through an objective lens for providing readings of the pits or recorded marks. When the laser beam has a wavelength λ of 400 to 410 nm, the objective lens has a numerical aperture NA of 0.70 to 0.85, and the pits or recorded marks have a minimum size PL of up to 0.36λ/NA, readout is carried out at a power Pr of at least 0.4 mW for the laser beam. When the laser beam has a wavelength λ of 630 to 670 nm, the objective lens has a numerical aperture NA of 0.60 to 0.65, and the pits or recorded marks have a minimum size PL of up to 0.36λ/NA, readout is carried out at a power Pr of at least 1.0 mW for the laser beam. Pits or recorded marks of a size approximate to the resolution limit determined by diffraction can be read out at a high C/N.

摘要翻译： 包括具有表示信息数据的凹坑或记录标记的信息记录层的光信息介质的信息读出方法包括通过用于提供凹坑或记录标记的读数的物镜将激光束照射到信息记录层的步骤。 当激光束具有400至410nm的波长λ时，物镜的数值孔径NA为0.70至0.85，并且凹坑或记录标记具有高达0.36λ/ NA的最小尺寸PL，读出被执行 在激光束的功率Pr为至少0.4mW。 当激光束具有630至670nm的波长λ时，物镜的数值孔径NA为0.60至0.65，并且凹坑或记录标记具有高达0.36λ/ NA的最小尺寸PL，读出被执行 在激光束的功率Pr为至少1.0mW。 通过衍射确定的大小接近分辨率极限的刻痕或记录标记可以高C / N读出。

公开(公告)号：US07496019B2

公开(公告)日：2009-02-24

申请号：US10125476

申请日：2002-04-19

申请人： Takashi Kikukawa ,  Tatsuya Kato ,  Hajime Utsunomiya ,  Hiroshi Shingai

发明人： Takashi Kikukawa ,  Tatsuya Kato ,  Hajime Utsunomiya ,  Hiroshi Shingai

IPC分类号： G11B7/0045

CPC分类号： G11B7/005 ,  G11B7/1263 ,  G11B7/24

摘要： An information readout method for an optical information medium comprising an information recording layer having pits or recorded marks representative of information data involves the step of irradiating a laser beam to the information recording layer through an objective lens for providing readings of the pits or recorded marks. When the laser beam has a wavelength λ of 400 to 410 nm, the objective lens has a numerical aperture NA of 0.70 to 0.85, and the pits or recorded marks have a minimum size PL of up to 0.36λ/NA, readout is carried out at a power Pr of at least 0.4 mW for the laser beam. When the laser beam has a wavelength λ of 630 to 670 nm, the objective lens has a numerical aperture NA of 0.60 to 0.65, and the pits or recorded marks have a minimum size PL of up to 0.36λ/NA, readout is carried out at a power Pr of at least 1.0 mW for the laser beam. Pits or recorded marks of a size approximate to the resolution limit determined by diffraction can be read out at a high C/N.

摘要翻译： 包括具有表示信息数据的凹坑或记录标记的信息记录层的光信息介质的信息读出方法包括通过用于提供凹坑或记录标记的读数的物镜将激光束照射到信息记录层的步骤。 当激光束具有400至410nm的波长λ时，物镜的数值孔径NA为0.70至0.85，并且凹坑或记录标记具有高达0.36λ/ NA的最小尺寸PL，读出被执行 在激光束的功率Pr为至少0.4mW。 当激光束具有630至670nm的波长λ时，物镜的数值孔径NA为0.60至0.65，并且凹坑或记录的标记具有高达0.36λ/ NA的最小尺寸PL，读出被执行 在激光束的功率Pr为至少1.0mW。 通过衍射确定的大小接近分辨率极限的刻痕或记录标记可以高C / N读出。

公开(公告)号：US20080239934A1

公开(公告)日：2008-10-02

申请号：US12076070

申请日：2008-03-13

申请人： Hiroshi Shingai ,  Tatsuya Kato ,  Masanori Kosuda ,  Hiroshi Takasaki ,  Hideki Hirata ,  Hajime Utsunomiya

发明人： Hiroshi Shingai ,  Tatsuya Kato ,  Masanori Kosuda ,  Hiroshi Takasaki ,  Hideki Hirata ,  Hajime Utsunomiya

IPC分类号： G11B7/24

CPC分类号： G11B7/2433 ,  G11B7/24038 ,  G11B2007/2431 ,  G11B2007/24312 ,  G11B2007/24314 ,  G11B2007/25706 ,  G11B2007/25715 ,  Y10T428/21

摘要： An optical recording medium is provided which includes two or more information layers in which an Sb-based eutectic material is used as the material for a recording film of a translucent information layer. There is also provided a recording film material for the optical recording medium. The translucent information layer is configured to include a recording film formed of a phase change material SbxGeyInz containing Sb, Ge, and In in an atomic ratio of x:y:z, where 5≦y≦15 and 4≦z≦15 are satisfied. The recording film further includes Te in an atomic ratio of a, provided that x+y+z+a=100 and 4≦a≦15 are satisfied. An interface layer formed of a ZrO2—Cr2O3 film having a thickness of 2 nm or more and 10 nm or less is provided on the laser beam incident side of the recording film. When the compositional ratio of the ZrO2—Cr2O3 film is given by ZrO2:Cr2O3=B:C (mol %), 20≦B≦90, 10≦C≦80, and B+C=100 are satisfied.

摘要翻译： 提供了一种光记录介质，其包括其中使用Sb基共晶材料作为半透明信息层的记录膜的材料的两个或更多个信息层。 还提供了一种用于光学记录介质的记录膜材料。 半透明信息层被配置为包括由包含Sb，Ge和Sb的相变材料Sb x Sub x Z z形成的记录膜;以及 在x：y：z的原子比中，其中5 <= y <= 15且4 <= z <= 15。 如果满足x + y + z + a = 100和4 <= a <= 15，则记录膜还包括原子比a的Te。 提供由厚度为2nm以上且10nm以下的ZrO 2·2L 2 O 3·3膜形成的界面层 在记录膜的激光束入射侧。 当ZrO 2→2→2→3 <3>膜的组成比由ZrO 2：Cr： B = C（摩尔％），20 <= B <= 90，10 <= C <= 80，B + C = 100。