公开(公告)号：US07553768B2

公开(公告)日：2009-06-30

申请号：US11398703

申请日：2006-04-06

申请人： Kazuyoshi Nakamura ,  Toshihide Nakajima ,  Kousuke Nakajima ,  Takahisa Oonami

发明人： Kazuyoshi Nakamura ,  Toshihide Nakajima ,  Kousuke Nakajima ,  Takahisa Oonami

IPC分类号： H01L21/302

CPC分类号： B24B37/24

摘要： A substrate having flatness of less than 230 nmPV and surface roughness at RMS of less than 0.20 nm. is obtained by a method comprising: a process of polishing an object to be polished with a polishing pad comprising at least one layer having compressibility of 5% or below in a base layer of the polishing pad.

摘要翻译： 平面度小于230nmPV的基板，RMS的表面粗糙度小于0.20nm。 是通过以下方法获得的：包括在抛光垫的基底层中用包括至少一层具有5％或更低的压缩率的层的抛光垫抛光待抛光物体的方法。

公开(公告)号：US20080289365A1

公开(公告)日：2008-11-27

申请号：US12219803

申请日：2008-07-29

申请人： Kousuke Nakajima

发明人： Kousuke Nakajima

IPC分类号： C03B32/00

CPC分类号： C03C10/0045 ,  C03C3/097 ,  C03C4/0085 ,  C03C2204/08

摘要： Glass-ceramics includes Li2O, Al2O3 and SiO2, have an average crystal grain diameter of a predominant crystal phase of 90 nm or below and have crystal grain diameter distribution of 20 nm or below. The glass-ceramics can be manufactured by heat treating glass comprising Li2O, Al2O3 and SiO2 under a temperature within a range from 650° C. to 750° C. and then further heat treating the glass under a temperature within a range from 700° C. to 800° C. for 100-200 hours.

摘要翻译： 玻璃陶瓷包括Li 2 O，Al 2 O 3和SiO 2，其主晶相的平均晶粒直径为90nm以下，晶粒直径分布为20nm以下。 玻璃陶瓷可以通过在650℃至750℃的温度范围内热处理包含Li 2 O，Al 2 O 3和SiO 2的玻璃来制造，然后在700℃以下的温度下进一步热处理玻璃 至800℃，持续100-200小时。

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。