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    • 5. 发明授权
    • Glass-ceramic substrate for a magnetic information recording medium
    • 用于磁信息记录介质的玻璃陶瓷基片
    • US06387509B1
    • 2002-05-14
    • US09253963
    • 1999-02-22
    • Naoyuki GotoKousuke Nakajima
    • Naoyuki GotoKousuke Nakajima
    • C03C1012
    • G11B5/7315C03C3/062C03C3/066C03C3/068C03C3/085C03C3/093C03C3/095C03C3/097C03C10/00C03C10/0009C03C10/0027
    • A glass-ceramic substrate for a magnetic information recording medium contains, as a main crystal phase or phases, one or more crystal phases selected from the group consisting of &bgr;-quartz (&bgr;-SiO2), &bgr;-quartz solid solution (&bgr;-SiO2 solid solution), &bgr;-spodumene (&bgr;-Li2O.Al2O3.4SiO2), &bgr;-spodumene solid solution (&bgr;-Li2O.Al2O3.4SiO2 solid solution), &bgr;-eucryptite (&bgr;-Li2O.Al2O3.2SiO2, a part of Li2O being capable of being substituted by MgO and/or ZnO) and &bgr;-eucryptite solid solution (&bgr;-Li2O.Al2O3.2SiO2 solid solution, a part of Li2O being capable of being substituted by MgO and/or ZnO). Alternatively, the glass-ceramic contains, as a main crystal phase or phases, gahnite (ZnAl2O4) and/or gahnite solid solution (ZnAl2O4 solid solution). The glass-ceramic substrate has a high heat resisting property and a super flat surface capable of achieving a high recording density according to the perpendicular magnetic recording.
    • 用于磁信息记录介质的玻璃陶瓷衬底包含一个或多个选自β-石英(β-SiO 2),β-石英固溶体(β-SiO 2)的晶相作为主晶相或相 固体溶液),β-锂辉石(β-Li2O.Al2O3.4SiO2),β-锂辉石固溶体(β-Li2O.Al2O3.4SiO2固溶体),β-锂辉石(β-Li2O.Al2O3.2SiO2,部分Li2O 能够被MgO和/或ZnO取代)和β-堇红石固溶体(β-Li2O.Al2O3.2SiO2固溶体,Li2O的一部分能够被MgO和/或ZnO取代)。 或者,玻璃陶瓷含有作为主要结晶相或相的高锰矿(ZnAl2O4)和/或高锰矿固溶体(ZnAl2O4固溶体)。 玻璃陶瓷基板具有高的耐热性能和能够根据垂直磁记录获得高记录密度的超平坦表面。
    • 6. 发明授权
    • Holding member for information storage disk and information storage disk drive device
    • 信息存储盘和信息存储盘驱动器的控制器
    • US06819526B2
    • 2004-11-16
    • US10069737
    • 2002-02-26
    • Mariko KataokaNaoyuki GotoKousuke NakajimaJunko IshiokaKatsuhiko YamaguchiToshitaka Yagi
    • Mariko KataokaNaoyuki GotoKousuke NakajimaJunko IshiokaKatsuhiko YamaguchiToshitaka Yagi
    • G11B1702
    • G11B5/7315C03C10/0027C03C10/0045G11B5/012G11B5/82G11B17/00G11B23/00
    • 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.
    • 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。
    • 7. 发明申请
    • Ultra low thermal expansion transparent glass ceramics
    • 超低热膨胀透明玻璃陶瓷
    • US20050065011A1
    • 2005-03-24
    • US10773934
    • 2004-02-06
    • Naoyuki Goto
    • Naoyuki Goto
    • C03C10/12C03C10/14
    • C03C3/097
    • There are provided glass-ceramics having an ultra low thermal expansion property and super flat surface capable of coping with lithography for the next generation LSI and component parts for semiconductor equipment such as masks, optical reflecting mirrors, wafer stages and reticle stages and various precision parts using such glass-ceramics. Glass-ceramics of the invention have an average linear thermal expansion coefficient within a range of 0.0±0.2×10−7/° C. within a temperature range from 0° C. to 50° C., have difference between the maximum value and the minimum value of ΔL/L of 10×10−7 or below, and comprise SiO2, Al2O3 and P2O5 with the total amount thereof in mass % being within a range from 86.0% to 89.0%.
    • 提供具有超低热膨胀特性的玻璃陶瓷和能够应付下一代LSI的光刻的超平坦表面和用于诸如掩模,光反射镜,晶片台和标线片台等各种精密零件的半导体设备的部件 使用这种玻璃陶瓷。 在0℃至50℃的温度范围内,本发明的玻璃陶瓷的平均线性热膨胀系数在0.0±0.2×10 -7 /℃的范围内,在最大值 并且ΔL/ L的最小值为10×10 -7或更低,并且包含SiO 2,Al 2 O 3和P 2 O 5,其总量以质量%计在86.0%至89.0%的范围内。
    • 8. 发明授权
    • Glass-ceramics for a light filter
    • 玻璃陶瓷用于过滤器
    • US06677259B2
    • 2004-01-13
    • US10066821
    • 2002-02-04
    • Naoyuki GotoMariko KataokaDonald G. Polensky
    • Naoyuki GotoMariko KataokaDonald G. Polensky
    • C03C1004
    • C03C10/0027G02B5/20G02B5/226
    • Glass-ceramics for a light filter capable of preventing variation of refractive index in a band-pass filter have a coefficient of thermal expansion within a range from 95×10−7/°C. to 140×10−7/°C. within a temperature range from −20° C. to +70° C. and, preferably, Young's modulus of 85 GPa and bending strength of 10 kg/mm2, and light transmittance for plate thickness of 10 mm of 60% or over within a wavelength range from 950 nm to 1600 nm. Predominant crystal phases of these glass-ceramics should preferably be (a) lithium disilicate and (b) one selected from the group consisting of &agr;-quartz, &agr;-quartz solid solution, &agr;-cristobalite and &agr;-cristobalite solid solution.
    • 用于能够防止带通滤光器中的折射率变化的光过滤器的玻璃陶瓷的热膨胀系数在95×10 -7 /℃的范围内。 至140×10 -7 /℃。 在-20℃至+ 70℃的温度范围内,优选的杨氏模量为85GPa,弯曲强度为10kg / mm 2,板厚为10mm的透光率为60%, 在950nm至1600nm的波长范围内。 这些玻璃陶瓷的主要晶相应优选为(a)二硅酸锂和(b)选自α-石英,α-石英固溶体,α-方英石和α-方英石固溶体的一种。
    • 9. 发明授权
    • Glass-ceramics
    • 玻璃陶瓷
    • US06426311B1
    • 2002-07-30
    • US09663727
    • 2000-09-15
    • Naoyuki GotoMariko KataokaToshitaka Yagi
    • Naoyuki GotoMariko KataokaToshitaka Yagi
    • C03C1014
    • G11B5/7315C03C10/0027C03C10/0045G11B5/012G11B5/82G11B17/00G11B23/00
    • 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.
    • 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。