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1. 发明授权

EP0977189B1 Optical recording method 有权
标题翻译：的光记录方法
公开(公告)号：EP0977189B1
公开(公告)日：2011-01-19
申请号：EP99305646.4
申请日：1999-07-16
申请人： TDK Corporation
发明人： Kikukawa, Takashi , Utsunomiya, Hajime
IPC分类号： G11B7/013 , G11B7/00
CPC分类号： G11B7/24085 , G11B7/00454

2. 发明公开

EP1400960A2 Optical recording/reproducing method and optical recording medium 审中-公开
标题翻译：光学记录/再现方法和光学记录介质
公开(公告)号：EP1400960A2
公开(公告)日：2004-03-24
申请号：EP03012151.1
申请日：2003-06-02
申请人： TDK Corporation
发明人： Inoue, Hiroyasu , Mishima, Koji , Aoshima, Masaki , Hirata, Hideki , Utsunomiya, Hajime , Arai, Hitoshi , Tanaka, Yoshitomo
IPC分类号： G11B7/0045 , G11B7/24
CPC分类号： G11B7/2433 , G11B7/00455 , G11B7/0052 , G11B7/2542 , G11B7/2578 , G11B2007/24304 , G11B2007/24308 , G11B2007/24312 , G11B2007/24314 , G11B2007/25706 , G11B2007/25708 , G11B2007/2571 , G11B2007/25711 , G11B2007/25713 , G11B2007/25715 , G11B2007/25716
摘要： An optical recording/reproducing method and an optical recording medium capable of performing excellent optical recording with a simple structure in a recording layer made of environmentally friendly materials. The optical recording medium has a recording layer (18) on a substrate (12). The recording layer has a pair of dielectric layers (16A,16B) of which states are altered by a laser beam that is an energy beam of which intensity is modulated according to information to be recorded. This recording layer also has a recording assist layer (14) sandwiched by these dielectric layers. The recording assist layer includes an element selected from Sn, Ti, Si, Bi, Ge, and C as a principle component, while the dielectric material as a base material for the dielectric layers is at least one of ZnS, SiO 2 , AlN, and Ta 2 O 5 .
摘要翻译：一种光记录/再现方法和光记录介质，其能够在由环境友好材料制成的记录层中以简单的结构执行优异的光记录。光记录介质在基板（12）上具有记录层（18）。记录层具有一对电介质层（16A，16B），其状态由激光束改变，该激光束是根据要记录的信息调制了强度的能量束。该记录层还具有夹在这些介电层之间的记录辅助层（14）。记录辅助层包括从Sn，Ti，Si，Bi，Ge和C中选择的元素作为主要成分，而作为用于电介质层的基础材料的电介质材料是ZnS，SiO2，AlN和 Ta2O5。

3. 发明公开

EP0871164A3 Optical recording medium 失效
公开(公告)号：EP0871164A3
公开(公告)日：2000-11-15
申请号：EP98302777.2
申请日：1998-04-08
申请人： TDK Corporation
发明人： Kato, Tatsuya , Utsunomiya, Hajime , Komaki, Tsuyoshi , Hirata, Hideki
IPC分类号： G11B7/24
CPC分类号： G11B7/257 , G11B7/24 , G11B7/252 , G11B7/2534 , G11B7/2542 , G11B7/256 , G11B2007/24312 , G11B2007/24314 , G11B2007/24316 , G11B2007/25706 , G11B2007/2571 , G11B2007/25715 , G11B2007/25716 , Y10S430/146
摘要： An optical recording medium of phase change type, and in particular, a dual side medium prepared by adhering two single side media is provided. In this medium, deformation of record marks generated in the overwriting due to difference in light absorption between the record marks and the region other than the record marks is prevented by providing a reflective layer (5) of high light transmission, and increase in jitter and failure of track servo and focus servo caused by uneven coating of the adhesive layer (7) and the resin protective layer (8) are prevented. The optical recording medium comprises a substrate (2), a recording layer (4) of phase change type on the surface side of the substrate, and a reflective layer (5) and a light absorption layer (6) disposed in this order on the surface side of the recording layer. The light absorption layer has a light transmission of 85% or higher in wavelength range S (wavelength in the range of 400 to 450 nm), up to 55% at the recording/reproducing wavelength, and 80% or higher in wavelength range L (wavelength in the range of 800 to 830 nm).

4. 发明公开

EP1011099A1 Optical recording method 有权
标题翻译： Optisches Aufzeichnungsverfahren
公开(公告)号：EP1011099A1
公开(公告)日：2000-06-21
申请号：EP99124036.7
申请日：1999-12-09
申请人： TDK Corporation
发明人： Kikukawa, Takashi , Utsunomiya, Hajime
IPC分类号： G11B7/013 , G11B7/0045
CPC分类号： G11B7/24085 , G11B7/00454 , G11B7/243 , G11B7/2531 , G11B7/2534 , G11B2007/24308 , G11B2007/2431 , G11B2007/24312 , G11B2007/24314 , G11B2007/24316
摘要： The present invention has enabled to solve various problems associated with the optical recording medium of phase change type when high density recording is conducted by reducing the record marks. Provided is an optical recording method for an optical recording medium having a recording layer of phase change type wherein amorphous record marks are formed in the recording layer by irradiating the medium with a recording beam which is power-modulated between high power and low power. In this method, minimum record marks are formed such that at least a part of the rear end protrudes toward the forward end of the mark.
摘要翻译：本发明能够解决通过减少记录标记进行高密度记录时与相变型光记录介质有关的各种问题。提供了一种具有相变型记录层的光学记录介质的光学记录方法，其中通过在大功率和低功率之间进行功率调制的记录光束照射介质，在记录层中形成非晶记录标记。在该方法中，形成最小记录标记，使得后端的至少一部分朝向标记的前端突出。

5. 发明公开

EP0871164A2 Optical recording medium 失效
标题翻译：光学记录介质
公开(公告)号：EP0871164A2
公开(公告)日：1998-10-14
申请号：EP98302777.2
申请日：1998-04-08
申请人： TDK Corporation
发明人： Kato, Tatsuya , Utsunomiya, Hajime , Komaki, Tsuyoshi , Hirata, Hideki
IPC分类号： G11B7/24
CPC分类号： G11B7/257 , G11B7/24 , G11B7/252 , G11B7/2534 , G11B7/2542 , G11B7/256 , G11B2007/24312 , G11B2007/24314 , G11B2007/24316 , G11B2007/25706 , G11B2007/2571 , G11B2007/25715 , G11B2007/25716 , Y10S430/146
摘要： An optical recording medium of phase change type, and in particular, a dual side medium prepared by adhering two single side media is provided. In this medium, deformation of record marks generated in the overwriting due to difference in light absorption between the record marks and the region other than the record marks is prevented by providing a reflective layer (5) of high light transmission, and increase in jitter and failure of track servo and focus servo caused by uneven coating of the adhesive layer (7) and the resin protective layer (8) are prevented. The optical recording medium comprises a substrate (2), a recording layer (4) of phase change type on the surface side of the substrate, and a reflective layer (5) and a light absorption layer (6) disposed in this order on the surface side of the recording layer. The light absorption layer has a light transmission of 85% or higher in wavelength range S (wavelength in the range of 400 to 450 nm), up to 55% at the recording/reproducing wavelength, and 80% or higher in wavelength range L (wavelength in the range of 800 to 830 nm).
摘要翻译：提供了一种相变型光学记录介质，特别是通过粘合两个单面介质而制备的双面介质。在该介质中，通过设置高透光率的反射层（5），防止由于记录标记与除记录标记以外的区域之间的光吸收差异而在重写中产生的记录标记的变形，防止了由粘合剂层（7）和树脂保护层（8）的不均匀涂覆引起的轨道伺服和聚焦伺服失败。该光记录介质包括基板（2），基板表面侧的相变型记录层（4），以及在基板表面侧依次设置的反射层（5）和光吸收层（6）记录层的表面侧。光吸收层的波长范围S（波长400〜450nm）为85％以上，记录再现波长为55％，波长范围L（透过率）为80％以上波长在800至830nm的范围内）。

6. 发明公开

EP0590230A3 Magnetooptical recording medium 失效
标题翻译：磁记录记录介质
公开(公告)号：EP0590230A3
公开(公告)日：1994-05-18
申请号：EP93104261.8
申请日：1993-03-16
申请人： TDK Corporation
发明人： Utsunomiya, Hajime , Kosuda, Masanori
IPC分类号： G11B11/10
CPC分类号： G11B11/10584 , Y10S428/90
摘要： In a magnetooptical recording medium comprising a first dielectric layer, a recording layer, a second dielectric layer, a metal reflective layer, and a protective coat on a substrate, magnetooptical recording is carried out in a magnetic field modulation mode using recording light. The first dielectric layer is thinner than the thickness corresponding to the primary minimum reflectivity in the reflectivity versus thickness curve of dielectric layer measured at the light wavelength. This provides an increased recording sensitivity and an increased recording power margin over which recording/reproducing operation can be carried out at low error rates and high resolution.
摘要翻译：在包括第一电介质层，记录层，第二电介质层，金属反射层和衬底上的保护涂层的磁光记录介质中，使用记录光在磁场调制模式下进行磁光记录。第一电介质层比对应于在光波长处测量的介电层的反射率/厚度曲线中的初级最小反射率的厚度薄。这提供了增加的记录灵敏度和增加的记录功率余量，可以以低误码率和高分辨率进行记录/再现操作。

7. 发明授权

EP1398767B1 Optical recording/reproducing method and optical recording medium 有权
标题翻译：一种光学记录/再现方法和光学记录介质
公开(公告)号：EP1398767B1
公开(公告)日：2010-09-01
申请号：EP03012152.9
申请日：2003-06-02
申请人： TDK Corporation
发明人： Inoue, Hiroyasu , Mishima, Koji , Aoshima, Masaki , Hirata, Hideki , Utsunomiya, Hajime , Arai, Hitoshi , Tanaka, Yoshitomo
IPC分类号： G11B7/24 , G11B7/0045
CPC分类号： G11B7/24035 , G11B7/2433 , G11B7/2542 , G11B7/2578 , G11B2007/24304 , G11B2007/24308 , G11B2007/24312 , G11B2007/24314 , G11B2007/25706 , G11B2007/25708 , G11B2007/2571 , G11B2007/25711 , G11B2007/25713 , G11B2007/25715 , G11B2007/25716

8. 发明授权

EP1011099B1 Optical recording method 有权
标题翻译：的光记录方法
公开(公告)号：EP1011099B1
公开(公告)日：2009-05-13
申请号：EP99124036.7
申请日：1999-12-09
申请人： TDK Corporation
发明人： Kikukawa, Takashi , Utsunomiya, Hajime
IPC分类号： G11B7/0045 , G11B7/013 , G11B7/243
CPC分类号： G11B7/24085 , G11B7/00454 , G11B7/243 , G11B7/2531 , G11B7/2534 , G11B2007/24308 , G11B2007/2431 , G11B2007/24312 , G11B2007/24314 , G11B2007/24316

9. 发明公开

EP1372149A1 Optical recording medium 有权
标题翻译：光学记录介质
公开(公告)号：EP1372149A1
公开(公告)日：2003-12-17
申请号：EP03013326.8
申请日：2003-06-13
申请人： TDK Corporation
发明人： Shingai, Hiroshi , Utsunomiya, Hajime
IPC分类号： G11B7/24
CPC分类号： G11B7/243 , G11B2007/24306 , G11B2007/24314 , Y10S430/146 , Y10T428/12701
摘要： There is provided an optical recording medium having a phase-change recording layer formed based on a drastically new concept of making the content of Mn still higher than the prior art while using Sb as a main component. The optical recording medium(1) has a recording layer(5) composed of a plurality of elements, and the recording layer(5) contains Sb, and also has an Mn content of more than 20 atomic % but not more than 40 atomic %, on condition that the total amount of all the elements composing the recording layer(5) is 100 atomic %.
摘要翻译：提供了一种具有相变记录层的光记录介质，该相变记录层基于使用Sb作为主要组分而使Mn的含量仍比现有技术更高的全新概念形成。光记录介质（1）具有由多个元素构成的记录层（5），并且记录层（5）含有Sb，并且还具有大于20原子％但不大于40原子％的Mn含量，条件是组成记录层（5）的所有元素的总量为100原子％。

10. 发明公开

EP1251499A2 Readout method and apparatus for optical information medium 审中-公开
标题翻译：一种用于再现光信息介质的方法和装置
公开(公告)号：EP1251499A2
公开(公告)日：2002-10-23
申请号：EP02252719.6
申请日：2002-04-17
申请人： TDK Corporation
发明人： Kikukawa, Takashi , Kato, Tatsuya , Utsunomiya, Hajime , Shingai, Hiroshi
IPC分类号： G11B7/005
CPC分类号： G11B7/005 , G11B7/1263 , G11B7/259 , G11B2007/25708 , G11B2007/25715
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 P L 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 P L 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.

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