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21. 发明授权

US06168844A Optical information recording medium 有权
标题翻译：光信息记录介质
公开(公告)号：US06168844A
公开(公告)日：2001-01-02
申请号：US09128085
申请日：1998-08-03
申请人： Yoshikazu Takagishi , Takanori Yoshizawa , Emiko Hamada
发明人： Yoshikazu Takagishi , Takanori Yoshizawa , Emiko Hamada
IPC分类号： B32B302
CPC分类号： G11B7/24 , G11B7/245 , G11B7/2472 , G11B7/248 , G11B7/2534 , G11B7/2542 , G11B7/2585 , G11B7/2595 , Y10S428/913 , Y10S430/146 , Y10T428/21
摘要： By keeping the imaginary number portion k of the complex index of refraction of the film of the light absorbing layer 3, the mean film thickness dav of the light absorbing layer 3, and the absorbency A related thereto within an appropriate range, the present invention provides an optical information recording medium with good recording sensitivity and playback properties, which makes possible high speed recording by increasing the sensitivity to the recording beam and stable recording with sufficient reflectivity, and which can reduce jitter. In the present invention, 0.13≦A≦0.21 where A (Abs) is the absorbency of the light absorbing layer at the wavelength of the recording beam; and 6.0≦k.dav≦12.0 where k is the imaginary number portion of the complex index of refraction of the film in the light absorbing layer and dav (nm) is the mean film thickness of the light absorbing layer, at the wavelength of the recording beam.
摘要翻译：通过将光吸收层3的膜，光吸收层3的平均膜厚度dav和与其有关的吸光度A的复折射率的虚数部分k保持在适当的范围内，本发明提供具有良好记录灵敏度和回放特性的光学信息记录介质，通过增加对记录光束的灵敏度和足够的反射率的稳定记录，可以实现高速记录，并且可以减少抖动。在本发明中，0.13 <= A < = 0.21其中A（Abs）是记录光束的波长处的光吸收层的吸光度; 和6.0 <= k.dav <= 12.0其中k是光吸收层中膜的复折射率的虚数部分，dav（nm）是光吸收层的平均膜厚度，在波长的记录光束。

22. 发明授权

US5080946A Optical information recording medium and recording method 失效
标题翻译：光信息记录介质和记录方法
公开(公告)号：US5080946A
公开(公告)日：1992-01-14
申请号：US549114
申请日：1990-07-06
申请人： Yosikazu Takagisi , Kunihiko Ootaguro , Emiko Hamada , Toru Fujii
发明人： Yosikazu Takagisi , Kunihiko Ootaguro , Emiko Hamada , Toru Fujii
IPC分类号： G03G5/04 , G11B7/24
CPC分类号： G11B7/24 , Y10S428/913 , Y10S430/146 , Y10T428/24876 , Y10T428/24893
摘要： An optical information recording medium comprising a light transmitting substrate having a spiral pregroove formed on its surface, a light absorptive layer of a coloring matter formed on the substrate directly or with other layer interposed therebetween, and a light reflective layer made of a metal film formed on the light absorptive layer directly or with other layer interposed therebetween, wherein .DELTA.S.ltoreq.0.3 wherein .DELTA.S is the optical phase difference represented by .DELTA.S=2d.sub.sub {n.sub.sub -n.sub.abs (1-d.sub.abs /d.sub.sub)}/.lambda. wherein d.sub.sub is the depth of the layer boundary on the substrate side of the light absorptive layer at the portion corresponding to the pregroove, d.sub.abs is the depth of the layer boundary on the light absorptive layer side of the light reflective layer at the portion corresponding to the pregroove, n.sub.sub is the real part of the complex refractive index of the substrate and any layer present on the substrate side of the light absorptive layer, n.sub.abs is the real part of the complex refractive index of the light absorptive layer, and .lambda. is the wavelength of a laser beam.

23. 发明授权

US07194751B2 Optical information medium 有权
标题翻译：光信息媒体
公开(公告)号：US07194751B2
公开(公告)日：2007-03-20
申请号：US10198374
申请日：2002-07-18
申请人： Toru Fujii , Yuji Tomizawa , Emiko Hamada
发明人： Toru Fujii , Yuji Tomizawa , Emiko Hamada
IPC分类号： G11B3/70 , G11B5/84
CPC分类号： G11B23/40 , G11B7/24024 , G11B7/2467 , G11B7/2472 , G11B7/2531 , G11B7/2533 , G11B7/2534 , G11B7/2535 , G11B7/256 , G11B7/2585 , G11B7/2595 , G11B23/0042
摘要： An optical information medium comprises a pair of discs which are bonded to each other, an optical recording layer provided on at least one of the discs, and a reflecting layer formed on an upper side of the optical recording layer. The optical information medium further includes an adhesive for bonding the pair of discs provided on the reflecting layer, wherein the adhesive has a thickness ranging from 10 to 80 μm. A protecting layer is provided on the upper side of the reflecting layer wherein the pair of discs may be bonded by the protecting layer. The optical recording layer, reflecting layer and protecting layer may be directly sequentially provided on the disc but another substrate layer may be inserted between these layers. There is employed, as the adhesive, those including a reactive curing resin or a hot melt material, and it is preferable that the shrinkage rate of the adhesive be less than 15%.
摘要翻译：光学信息介质包括彼此粘合的一对光盘，设置在至少一个光盘上的光学记录层以及形成在光学记录层的上侧上的反射层。光学信息介质还包括用于粘合设置在反射层上的一对光盘的粘合剂，其中粘合剂具有10至80μm的厚度。保护层设置在反射层的上侧，其中该一对光盘可被保护层粘合。光记录层，反射层和保护层可以直接依次设置在盘上，而另一个基底层可以插入在这些层之间。作为粘合剂使用包括反应性固化树脂或热熔性材料的粘合剂，并且粘合剂的收缩率优选小于15％。

24. 发明授权

US06507547B1 Medium and method for recording optical information 有权
标题翻译：介质和记录光信息的方法
公开(公告)号：US06507547B1
公开(公告)日：2003-01-14
申请号：US09531208
申请日：2000-03-20
申请人： Yoshikazu Takagishi , Takanori Yoshizawa , Kazuyuki Shibuya , Emiko Hamada
发明人： Yoshikazu Takagishi , Takanori Yoshizawa , Kazuyuki Shibuya , Emiko Hamada
IPC分类号： G11B700
CPC分类号： G11B7/00455 , G11B7/24 , G11B7/2472 , G11B7/2531 , G11B7/2534 , G11B7/2542 , G11B7/259
摘要： Provided is a medium for recording optical information and a method for recording optical information that allow recording sensitivity to be increased, and particularly a prescribed recording sensitivity to be maintained together with reflectivity and other playback characteristics during high-speed recording, by employing the temperature dependence of recording sensitivity of the light-absorbing layer instead of the light attenuation coefficient of the light-absorbing layer, and selecting a material which is prone to increased absorption of a laser beam at high temperatures during recording. A distinctive feature is that the absorbance or recording sensitivity of the dye material film used in the medium for recording optical information that has a writable structure is dependent on temperature. Specifically, it was found that the absorption spectrum of the dye material varies at high temperatures, and a relation A2/A1≧1.30 was established. In this relation, A1 (Abs) is an absorbance of the light-absorbing layer at a wavelength of recording light under room-temperature conditions, T (°C.) is a pyrolysis temperature of the light-absorbing layer, and A2 (Abs) is an absorbance at a wavelength of recording light under T−50 (°C.) conditions.
摘要翻译：提供了一种用于记录光学信息的介质和用于记录允许记录灵敏度增加的光学信息的方法，特别是在高速记录期间通过采用温度依赖性与特定的记录灵敏度一起保持与反射率和其他重放特性记录光吸收层的灵敏度而不是光吸收层的光衰减系数，并且在记录期间选择易于增加激光束在高温下的吸收的材料。特别的特征是用于记录具有可写结构的光学信息的介质中的染料材料膜的吸光度或记录灵敏度取决于温度。具体地说，发现染料的吸收光谱在高温下变化，建立了A2 / A1> = 1.30的关系。在这种关系中，A1（Abs）是在室温条件下记录光波长处的光吸收层的吸光度，T（℃）是光吸收层的热解温度，A2（Abs ）是在T-50（℃）条件下记录光的波长处的吸光度。

25. 发明授权

US06452899B1 Optical information medium and recording method therefor 有权
标题翻译：光信息媒体及其记录方法
公开(公告)号：US06452899B1
公开(公告)日：2002-09-17
申请号：US09340212
申请日：1999-06-25
申请人： Toru Fujii , Toshiaki Tajima , Yuji Tomizawa , Ryou Negishi , Emiko Hamada
发明人： Toru Fujii , Toshiaki Tajima , Yuji Tomizawa , Ryou Negishi , Emiko Hamada
IPC分类号： G11B724
CPC分类号： G11B7/24079 , G11B7/24076
摘要： An optical information medium, comprising: a transparent substrate for penetrating a recording laser beam therethrough; a recording layer being formed on the transparent substrate; and a reflective layer being formed on the recording layer and for reflecting reproducing laser beam thereupon. A numerical aperture of an objective lens of an optical pickup for irradiating the recording laser beam on the recording layer is approximately 0.65, and the numerical aperture of an objective lens of the optical pickup for irradiating the recording laser beam on the reflection layer is approximately 0.60. An inclination angle &thgr; at both edges of the groove for tracking, being formed spiral-like on the surface of the transparent substrate on which the recording layer is formed, with respect to the main surface of the transparent substrate is selected from 55° to 75°. An index &agr;, being expressed by 1−Dr/Ds when assuming that depth of the groove on the transparent substrate is Ds and depth of the recording layer at position of said groove is Dr, is selected from 0.2 to 0.4. Further, full width at half maximum of the groove on the transparent substrate is selected to be from one-third (⅓) to a half (½) of the pitch p of the groove. With this optical information medium, it is possible to record high density signals as signals being readable optically, as well as to record them with stability.
摘要翻译：一种光学信息介质，包括：用于穿过其中的记录激光束的透明基板; 在所述透明基板上形成记录层; 并且反射层形成在记录层上并用于反射再现激光束。用于将记录激光束照射在记录层上的用于照射记录激光束的光学拾取器的物镜的数值孔径大约为0.65，用于将记录激光束照射在反射层上的光学拾取器的物镜的数值孔径大约为0.60 。在透明基板的形成有透明基板的表面上相对于透明基板的主表面形成螺旋状的用于跟踪的凹槽的两个边缘处的倾斜角θ选自55°至75° °。当假定透明基板上的凹槽的深度为Ds并且在所述凹槽的位置处的记录层的深度为Dr时，由1-Dr / Ds表示的索引α选自0.2至0.4。此外，透明基板上的凹槽的最大半峰宽选择为凹槽的间距p的三分之一（1/3）至1/2（1/2）。利用该光学信息介质，可以将高密度信号记录为可光学读取的信号，并且可以稳定地记录它们。

26. 发明授权

US06721265B1 High-density optical information recording medium and a substrate and a stamper for the manufacture thereof 有权
标题翻译：高密度光学信息记录介质及其制造用基板和压模
公开(公告)号：US06721265B1
公开(公告)日：2004-04-13
申请号：US09506915
申请日：2000-02-18
申请人： Toru Fujii , Toshiaki Tajima , Yuji Tomizawa , Ryou Negishi , Emiko Hamada
发明人： Toru Fujii , Toshiaki Tajima , Yuji Tomizawa , Ryou Negishi , Emiko Hamada
IPC分类号： G11B724
CPC分类号： G11B7/24079 , G11B7/24076
摘要： An optical information recording medium enables accurate tracking servo throughout the recording area including inner and outer peripheral region by way of reducing the differences between the amplitudes of the push-pull signals from those regions. The medium comprises a light transmitting substrate, a tracking groove formed on a surface of the light transmitting substrate, a recording layer formed on the surface of the substrate having the groove, and a reflective layer, formed on the recording layer, for reflecting recording and reproducing laser beams. The width of the groove at the outer peripheral region is made smaller than that at the inner peripheral region. Specifically, the ratio of the width at the outer peripheral region to that at the inner peripheral region is set to be greater than or equal to 0.8.
摘要翻译：光学信息记录介质通过减少来自这些区域的推挽信号的振幅之间的差异，能够在包括内外周区域的整个记录区域内实现精确的跟踪伺服。介质包括透光基板，形成在透光基板的表面上的跟踪槽，形成在具有凹槽的基板的表面上的记录层和形成在记录层上的反射层，用于反射记录和再现激光束。外周区域的槽宽度比内周区域的宽度小。具体地说，将外周区域的宽度与内周区域的宽度的比率设定为大于等于0.8。

27. 发明授权

US5895697A Optical information medium 失效
标题翻译：光信息媒体
公开(公告)号：US5895697A
公开(公告)日：1999-04-20
申请号：US955156
申请日：1997-10-21
申请人： Toshiaki Tajima , Yuji Tomizawa , Ryou Negishi , Emiko Hamada , Toru Fujii
发明人： Toshiaki Tajima , Yuji Tomizawa , Ryou Negishi , Emiko Hamada , Toru Fujii
IPC分类号： G11B5/62 , B32B3/00
CPC分类号： G11B5/62 , Y10S428/913 , Y10S430/146 , Y10T428/21
摘要： An optical information medium comprises a first disc forming information recording layer on a main surface thereof, a second disc being bonded to the first disc at the surface where the information recording layer is formed by way of an adhesive. A hydrophilic resin film is formed on the surface of the disc at the inner peripheral side extending from the center hole to the information non-recording area. The hydrophilic resin film is damp and is rough compared with the other portion formed of non-hydrophilic resin, and it is elastic. The characters, patterns or designs can be printed on the optical information medium using water-base ink, etc. after manufacturing the optical information medium. Further, the hydrophilic resin film is formed on the disc at the portion outside the information recording area. Further, when the hydrophilic resin film is formed, the surface of the inner and outer peripheral portions of the optical information medium protuberates slightly thicker than other portion so that the fats of the fingers is hardly stuck to the recording surface of the optical information medium even if the inner and outer peripheral portions of the disc is grasped by hand.
摘要翻译：光学信息介质包括在其主表面上的第一盘形成信息记录层，在通过粘合剂形成信息记录层的表面处将第二盘结合到第一盘。在从中心孔延伸到信息非记录区域的内周侧的盘的表面上形成亲水性树脂膜。与非亲水性树脂形成的其它部分相比，亲水性树脂膜是潮湿的，并且是弹性的。在制造光学信息介质之后，可以使用水基油墨等在光学信息介质上印刷字符，图案或设计。此外，在信息记录区域外的部分的盘上形成亲水性树脂膜。此外，当形成亲水性树脂膜时，光学信息介质的内周和外周部分的表面突出比其它部分稍厚，使得手指的脂肪几乎不粘附到光信息介质的记录表面，甚至如果用手握住盘的内外周部分。

28. 发明授权

US5318882A Optical recording medium containing a light stabilizer comprised of aryl nitrogen compound 失效
标题翻译：含有由芳基氮化合物构成的光稳定剂的光学记录介质
公开(公告)号：US5318882A
公开(公告)日：1994-06-07
申请号：US686870
申请日：1991-04-16
申请人： Kunihiko Ootaguro , Emiko Hamada , Yosikazu Takagisi , Toru Fujii
发明人： Kunihiko Ootaguro , Emiko Hamada , Yosikazu Takagisi , Toru Fujii
IPC分类号： C08K5/32 , G11B7/244 , G11B7/24
CPC分类号： C08K5/32 , G11B7/244 , G11B7/2472 , G11B7/2475 , G11B7/2534 , Y10S430/146
摘要： Certain types of aryl nitrogen compounds are found to be useful not only for effectively rendering dyes lightfast but also for using as an additive that has high solubility in solvents and sufficiently good miscibility with dyes to insure that their solubility will not be impaired. They can be used for preventing various reactions that cause deterioration by light in organic dyes, in particular cyanine dyes. They can also be used for improving the keeping quality and recording and reproduction characteristics of optical recording media that use organic dyes in the form of thin films. Representative examples include N, N-lower alkyl substituted nitrosoanilines, phenol or naphthol derivatives having at least one nitroso group, nitrosodiphenylamine and its derivatives and 1-pycryl-2, 2-diarylhydrazyl free radicals.
摘要翻译：发现某些类型的芳基氮化合物不仅用于有效地使染料耐光，而且用作在溶剂中具有高溶解性和与染料充分良好混溶性的添加剂，以确保其溶解性不会受损。它们可用于防止在有机染料，特别是花青染料中引起光的劣化的各种反应。它们也可用于提高以薄膜形式使用有机染料的光学记录介质的保存质量和记录和再现特性。代表性实例包括N，N-低级烷基取代的亚硝基苯胺，具有至少一个亚硝基的苯酚或萘酚衍生物，亚硝基二苯胺及其衍生物和1-对环基-2,2-二芳基肼基自由基。

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