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1. 发明授权

US06426311B1 Glass-ceramics 失效
标题翻译：玻璃陶瓷
公开(公告)号：US06426311B1
公开(公告)日：2002-07-30
申请号：US09663727
申请日：2000-09-15
申请人： Naoyuki Goto , Mariko Kataoka , Toshitaka Yagi
发明人： Naoyuki Goto , Mariko Kataoka , Toshitaka Yagi
IPC分类号： C03C1014
CPC分类号： G11B5/7315 , C03C10/0027 , C03C10/0045 , G11B5/012 , G11B5/82 , G11B17/00 , G11B23/00
摘要： There are provided glass-ceramics containing, as a predominant crystal phase or phases, at least one selected from the group consisting of &agr;-cristobalite, &agr;-cristobalite solid solution, &agr;-quartz and &agr;-quartz solid solution, containing substantially no lithium disilicate (Li2O·2SiO2), lithium silicate (Li2O·SiO2), &bgr;-spodumene, &bgr;-eucryptite, &agr;-quartz, mica or fluorrichterite, containing substantially no Cr ingredient or Mn ingredient, and having average linear thermal expansion coefficient within a range from +65×10−7/° C. to +140×10−7/° C. within a temperature range from −50° C. to +70° C., said predominant crystal phase or phases having an average crystal grain diameter of less than 0.10 &mgr;m. The glass-ceramics are suitable for use as a substrate for an information storage medium and also for use as a substrate for a light filter.
摘要翻译：提供的玻璃陶瓷作为主要晶相或相，含有至少一种选自α-方英石，α-方英石固溶体，α-石英和α-石英固溶体中的至少一种，其基本上不含二硅酸锂（Li 2 O 2·SiO 2），硅酸锂（Li 2 O 3·SiO 2），β-锂辉石，β-锂钇石，α-石英，云母或氟铁矿，其基本上不含Cr成分或Mn成分，平均线性热膨胀系数在在-50℃至+ 70℃的温度范围内，+ 65×10 -7 /℃至+ 140×10 -7 /℃，所述主晶相或平均晶粒直径小于0.10 妈妈玻璃陶瓷适合用作信息存储介质的基板，也可用作光过滤器的基板。

2. 发明授权

US08093167B2 Glass composition and substrate 失效
标题翻译：玻璃组成和基材
公开(公告)号：US08093167B2
公开(公告)日：2012-01-10
申请号：US13028485
申请日：2011-02-16
申请人： Toshitaka Yagi , Naoyuki Goto
发明人： Toshitaka Yagi , Naoyuki Goto
IPC分类号： C03C3/097 , C03C3/083 , C03C3/11 , C03C10/04
CPC分类号： C03C10/0009 , C03C3/097 , C03C3/11 , C03C3/112 , Y10T428/24355 , Y10T428/315
摘要： For providing glasses and glass-ceramics having properties suitable for use as a substrate of an information storage medium of next generation such as one for the perpendicular magnetic recording system without employing arsenic and antimony components which adversely affect human beings and the environment, there are provided glass-ceramics comprising SiO2, Li2O and Al2O3 on oxide basis, comprising lithium disilicate as a crystal phase, and comprising one or more elements selected from the group consisting of Sn, Ce, Mn, W, Ta, Bi, Nb, S, Cl and F.
摘要翻译：为了提供具有适合用作下一代信息存储介质的基板的玻璃和玻璃陶瓷，例如用于垂直磁记录系统的基板，而不使用对人类和环境有不利影响的砷和锑成分，包含基于氧化物的SiO 2，Li 2 O和Al 2 O 3的玻璃陶瓷，包含二硅酸锂作为结晶相，并且包含选自Sn，Ce，Mn，W，Ta，Bi，Nb，S，Cl中的一种或多种元素和F.

3. 发明申请

US20100215993A1 GLASS SUBSTRATE FOR INFORMATION RECORDING MEDIUM AND METHOD FOR PRODUCING THE SAME 失效
标题翻译：用于记录介质的玻璃基板及其制造方法
公开(公告)号：US20100215993A1
公开(公告)日：2010-08-26
申请号：US12710629
申请日：2010-02-23
申请人： Toshitaka Yagi , Naoyuki Goto
发明人： Toshitaka Yagi , Naoyuki Goto
IPC分类号： C03C3/105 , C03C3/108 , G11B5/73 , C03B27/00
CPC分类号： G11B5/8404 , C03C3/097 , C03C10/0027 , C03C21/002 , C03C2204/08 , G11B5/7315
摘要： There is provided a glass substrate which has the properties required in the use as a substrate for an information recording medium of the next generation such as a perpendicular magnetic recording system, and can be applied as a substrate for an information recording medium of the next generation particularly on the premise of using the glass substrate in a dynamic environment. More particularly, there is provided a glass substrate for an information recording medium which has sufficiently high surface hardness, has a good balance between specific gravity and mechanical strength, and has high strength to withstand high speed rotation or drop impact, and which can be produced with a high productivity adequate for a direct press method, without the occurrence of bubbles in the glass blank or reboil upon pressing even if arsenic components or antimony components are not substantially used. A glass substrate for an information recording medium, includes, as expressed in terms of percent by mass on the oxide basis: 52 to 67% of SiO2, 3 to 15% of Al2O3, and 0.2 to 8% of P2O5, the glass substrate having a Young's modulus of 85 GPa or greater, a specific gravity of 2.60 or less, and a ratio of Young's modulus to specific gravity (Young's modulus/specific gravity) of 33.0 or greater.
摘要翻译：提供了具有在用作诸如垂直磁记录系统的下一代信息记录介质的基板所需的性能的玻璃基板，并且可以用作下一代信息记录介质的基板特别是在动态环境中使用玻璃基板的前提下。更具体地，提供了一种用于信息记录介质的玻璃基板，其具有足够高的表面硬度，比重和机械强度之间具有良好的平衡，并且具有高的耐受高速旋转或落下冲击的强度，并且可以制造具有足够的直接压制方法的高生产率，即使在基本不使用砷成分或锑成分的情况下，也不会在玻璃坯料中发生气泡或者在压制时再沸腾。用于信息记录介质的玻璃基板包括以氧化物为基准的质量百分比表示：SiO 2为52〜67％，Al 2 O 3为3〜15％，P 2 O 5为0.2〜8％，玻璃基板杨氏模量为85GPa以上，比重为2.60以下，杨氏模量与比重（杨氏模量/比重）的比为33.0以上。

4. 发明授权

US08043706B2 Inorganic composition article 失效
标题翻译：无机组成物品
公开(公告)号：US08043706B2
公开(公告)日：2011-10-25
申请号：US12078639
申请日：2008-04-02
申请人： Naoyuki Goto , Toshitaka Yagi
发明人： Naoyuki Goto , Toshitaka Yagi
IPC分类号： B32B9/00 , C03C10/14
CPC分类号： C03B32/00 , C03B27/02 , C03C10/0045 , G11B5/7315 , H05K1/0306
摘要： An inorganic composition article used in disk substrate for information recording media, with a low melting point and a high productivity, combining superior surface characteristics capable of sufficiently dealing with a ramp load system for high density recording in both an in-plane magnetic recording system and a perpendicular magnetic recording system, having a high mechanical strength capable of enduring high speed rotation and impact, and combining both a heat expansion characteristic and heat resistance corresponding to each drive component. The inorganic composition articles contain a Li2O component and an Al2O3 component, with the percent by mass ratio of Li2O to Al2O3 (Li2O/Al2O3) being at least 0.3, include crystals, and have a compressive stress layer arranged on a surface.
摘要翻译：一种在具有低熔点和高生产率的用于信息记录介质的盘基片中使用的无机组合物制品，其结合了能够充分处理在面内磁记录系统和垂直磁记录系统，其具有能够耐受高速旋转和冲击的高机械强度，并且结合对应于每个驱动部件的热膨胀特性和耐热性。所述无机组合物成分含有Li 2 O成分和Al 2 O 3成分，Li 2 O与Al 2 O 3的质量比（Li 2 O / Al 2 O 3）为0.3以上，包含结晶，在表面具有压应力层。

5. 发明申请

US20070281849A1 Crystallized glass, and method for producing crystallized glass 失效
标题翻译：结晶玻璃，以及结晶玻璃的制造方法
公开(公告)号：US20070281849A1
公开(公告)日：2007-12-06
申请号：US11806876
申请日：2007-06-05
申请人： Toshitaka Yagi , Naoyuki Goto
发明人： Toshitaka Yagi , Naoyuki Goto
IPC分类号： C03C10/14 , C03C10/12
CPC分类号： C03C10/0027 , C03C10/0009
摘要： Provided are SiO2—Al2O3-based or Li2O—Al2O3—SiO2-based crystallized glass that solves the cause of cracking and fracture in forming it into large-size shaped articles, that has homogeneous inner quality and that may be produced stably at high efficiency; and a method for producing it. The crystallized glass contains components of SiO2 and Al2O3, wherein the crystal precipitation peak temperature width obtained in differential thermal analysis of amorphous glass, a precursor thereof, is at least 22° C. Preferably, the total amount of the TiO2 component and the ZrO2 component in the crystallized glass is within a range of from 3.0 to less than 4.3%. FIG. 1 is referred to.
摘要翻译：提供的是SiO 2 -Al 2 O 3 O 3或Li 2 O-Al 2 O 2，其结构化的玻璃，其解决了将其形成为大尺寸成形制品的开裂和断裂的原因，其具有均匀的内部质量，和/ 可以高效率地稳定地生产; 及其制造方法。结晶玻璃含有SiO 2和Al 2 O 3 3的组分，其中在非晶玻璃的差示热分析中获得的晶体沉淀峰温度宽度，其前体为至少22℃。优选地，结晶玻璃中的TiO 2成分和ZrO 2 H 2成分的总量在从3.0降到小于4.3％。图。参考图1。

6. 发明申请

US20070082294A1 Inorganic composition 失效
标题翻译：无机组成
公开(公告)号：US20070082294A1
公开(公告)日：2007-04-12
申请号：US11542121
申请日：2006-10-04
申请人： Naoyuki Goto , Toshitaka Yagi , Takayuki Kishi
发明人： Naoyuki Goto , Toshitaka Yagi , Takayuki Kishi
IPC分类号： G11B7/24
CPC分类号： C03C10/0027 , C03C10/0045 , H05K1/0306
摘要： The present invention provides an inorganic composition for use in information recording medium disc substrate and such, having an excellent surface property capable of sufficiently corresponding with a ramp load system for high density recording, a high degree of tolerability to high speed rotation, and high productivity at a low melting point. Specifically, this invention provides an inorganic composition containing one crystalline phase selected from the group consisting of α-quartz (α-SiO2), lithium disilicate (Li2Si2O5) and lithium monosilicate (Li2SiO3), or that contain at least a crystalline phase of lithium monosilicate (Li2SiO3), in which a mean particle diameter of a particle showing a crystalline phase contained in the inorganic composition is 1 μm or less, a ring flexural strength is 300 MPa or more, and a surface roughness (an arithmetic mean roughness) thereof after a polishing process is 10 Å or less.
摘要翻译：本发明提供了一种用于信息记录介质盘基片的无机组合物，具有能够与用于高密度记录的斜坡载荷系统充分相对应的优异的表面性质，高速旋转的高度耐受性和高生产率在低熔点。具体地说，本发明提供一种无机组合物，其含有选自α-石英（α-SiO 2），二硅酸锂（Li 2 S 2 Si 或者含有至少一个锂的结晶相的锂单硅酸锂（Li 2 SiO 3）无机组合物中含有结晶相的粒子的平均粒径为1μm以下，环状弯曲强度为300MPa以上，表面粗糙度（算术平均粗糙度）为单硅酸盐（Li 2 SiO 3）抛光过程为10埃或更少。

7. 发明授权

US08603350B2 Method of manufacturing substrate for information storage media 失效
标题翻译：制造信息存储介质用基板的方法
公开(公告)号：US08603350B2
公开(公告)日：2013-12-10
申请号：US12836238
申请日：2010-07-14
申请人： Naoyuki Goto , Toshitaka Yagi , Yutaka Yamashita
发明人： Naoyuki Goto , Toshitaka Yagi , Yutaka Yamashita
IPC分类号： C03C15/02 , B24B1/00
CPC分类号： G11B5/8404 , B24B37/042 , B24B37/08 , C03C19/00 , G11B5/7315
摘要： A manufacturing method is provided for manufacturing a substrate for information storage media having various properties that are demanded for a next generation of information storage media substrate purposes exemplified by perpendicular magnetic recording systems, etc., and above all, having high fracture toughness and a smooth surface at low cost. The method of manufacturing a substrate for information storage media includes a step of preparing glass material of a plate shape containing SiO2 component, Al2O3 component, and R′2O component, R′ being at least one selected from Li, Na, and K, and the step of lapping includes at least one sub-step of lapping the glass material with a diamond pad.
摘要翻译：提供一种用于制造用于信息存储介质的基板的制造方法，其具有为垂直磁记录系统等示例的信息存储介质基板目的的下一代所需的各种性能，并且首先具有高断裂韧性和平滑表面低成本。制造信息存储介质用基板的方法包括制备含有SiO 2成分，Al 2 O 3成分和R'2O成分的R'为选自Li，Na，K中的至少一种的板状的玻璃材料的工序，研磨步骤包括用金刚石垫研磨玻璃材料的至少一个子步骤。

8. 发明授权

US08283060B2 Crystallized glass substrate for information recording medium and method of producing the same 失效
标题翻译：用于信息记录介质的结晶玻璃基板及其制造方法
公开(公告)号：US08283060B2
公开(公告)日：2012-10-09
申请号：US12792030
申请日：2010-06-02
申请人： Toshitaka Yagi , Naoyuki Goto
发明人： Toshitaka Yagi , Naoyuki Goto
IPC分类号： G11B5/73 , C03C3/12 , C03C3/21 , C03B27/012
CPC分类号： C03C10/00 , C03C3/095 , C03C3/097 , C03C21/002 , C03C2204/08 , G11B5/73 , G11B5/7315 , G11B5/8404
摘要： To provide a substrate for information recording medium having various properties, in particular higher fracture toughness, required for application of the substrate for information recording medium of the next generation such as perpendicular magnetic recording system, etc. and a material with excellent workability for such purpose. A crystallized glass substrate for information recording medium, consisting of a crystallized glass which comprises one or more selected from RAl2O4 and R2TiO4 as a main crystal phase, in which R is one or more selected from Zn, Mg and Fe, and in which the main crystal phase has a crystal grain size in a range of from 0.5 nm to 20 nm, a degree of crystallinity of 15% or less, and a specific gravity of 3.00 or less.
摘要翻译：为了提供用于信息记录介质的基板，其具有用于施加下一代信息记录介质的基板（诸如垂直磁记录系统等）所需的各种性能，特别是较高的断裂韧性，以及具有优异的可加工性的材料用于该目的。一种用于信息记录介质的结晶玻璃基板，由包含选自由Zr，Mg和Fe中的一种或多种选自Zn，Mg和Fe中的一种或多种的主要结晶相的一种或多种的结晶玻璃组成，其中主要晶相的晶粒尺寸为0.5nm〜20nm，结晶度为15％以下，比重为3.00以下。

9. 发明授权

US07589038B2 Inorganic composition 失效
标题翻译：无机组成
公开(公告)号：US07589038B2
公开(公告)日：2009-09-15
申请号：US11542121
申请日：2006-10-04
申请人： Naoyuki Goto , Toshitaka Yagi , Takayuki Kishi
发明人： Naoyuki Goto , Toshitaka Yagi , Takayuki Kishi
IPC分类号： C03C10/04 , G11B7/241 , C03C10/14
CPC分类号： C03C10/0027 , C03C10/0045 , H05K1/0306
摘要： The present invention provides an inorganic composition for use in information recording medium disc substrate and such, having an excellent surface property capable of sufficiently corresponding with a ramp load system for high density recording, a high degree of tolerability to high speed rotation, and high productivity at a low melting point. Specifically, this invention provides an inorganic composition containing one crystalline phase selected from the group consisting of α-quartz (α-SiO2), lithium disilicate (Li2Si2O5) and lithium monosilicate (Li2SiO3), or that contain at least a crystalline phase of lithium monosilicate (Li2SiO3), in which a mean particle diameter of a particle showing a crystalline phase contained in the inorganic composition is 1 μm or less, a ring flexural strength is 300 MPa or more, and a surface roughness (an arithmetic mean roughness) thereof after a polishing process is 10 Å or less.
摘要翻译：本发明提供了一种用于信息记录介质盘基片的无机组合物，具有能够与用于高密度记录的斜坡载荷系统充分相对应的优异的表面性质，高速旋转的高度耐受性和高生产率在低熔点。具体地说，本发明提供一种无机组合物，其含有选自α-石英（α-SiO 2），二硅酸锂（Li 2 Si 2 O 5）和单硅酸锂（Li 2 SiO 3）中的一种结晶相，或至少含有单硅酸锂的结晶相（Li 2 SiO 3），其中显示无机组合物中所含结晶相的粒子的平均粒径为1μm以下，环弯曲强度为300MPa以上，其后表面粗糙度（算术平均粗糙度）为抛光过程为10埃或更少。

10. 发明授权

US06819526B2 Holding member for information storage disk and information storage disk drive device 失效
标题翻译：信息存储盘和信息存储盘驱动器的控制器
公开(公告)号：US06819526B2
公开(公告)日：2004-11-16
申请号：US10069737
申请日：2002-02-26
申请人： Mariko Kataoka , Naoyuki Goto , Kousuke Nakajima , Junko Ishioka , Katsuhiko Yamaguchi , Toshitaka Yagi
发明人： Mariko Kataoka , Naoyuki Goto , Kousuke Nakajima , Junko Ishioka , Katsuhiko Yamaguchi , Toshitaka Yagi
IPC分类号： G11B1702
CPC分类号： G11B5/7315 , C03C10/0027 , C03C10/0045 , G11B5/012 , G11B5/82 , G11B17/00 , G11B23/00
摘要： An information storage disk holding member for holding an information storage disk in position in an information storage disk drive device, the holding member being made of glass-ceramics in which a crystal phase is dispersed in a glass matrix. The holding member has specific rigidity (Young's modulus/specific gravity) of not greater than 37 GPa, specific gravity of not greater than 3.0, coefficient of thermal expansion within a range from −50° C. to +70° C. which is within a range from +35×10−7/° C. to +130×10−7/° C., Young's modulus within a range from 95 GPa to 130 GPa, specific gravity within a range from 2.40 to 2.60 and bending strength within a range from 400 MPa to 800 MPa. There is provided an information storage disk holding member which is capable of coping with a high speed rotation of a disk in conformity with tendencies toward high speed transmission of information, increasing mechanical strength for adaptation to mobile uses, having a thermal expansion property matching that of other drive component parts and eliminating defects caused by solving out of alkali. There is also provided an information storage disk drive device using this holding member.
摘要翻译：一种信息存储盘保持构件，用于将信息存储盘保持在信息存储盘驱动装置中的适当位置，所述保持构件由将晶相分散在玻璃基体中的玻璃陶瓷制成。保持构件具有不大于37GPa，比重不大于3.0的比刚度（杨氏模量/比重），在-50℃至+ 70℃的范围内的热膨胀系数在+ 35×10 -7 /℃至+ 130×10 -7 /℃的范围内，杨氏模量在95GPa至130GPa的范围内，比重在2.40至2.60范围内，弯曲强度在范围从400MPa到800MPa。提供了一种信息存储盘保持构件，其能够适应于高速传输信息的趋势，提高了盘的高速旋转，增加了适应移动用途的机械强度具有与其他驱动部件的热膨胀特性相匹配的特征，并且消除由碱析出而引起的缺陷。还提供了使用该保持构件的信息存储盘驱动装置。

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