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    • 1. 发明授权
    • Glass substrate for information recording medium and method for manufacturing the same, and magnetic recording medium
    • 用于信息记录介质的玻璃基板及其制造方法和磁记录介质
    • US08328602B2
    • 2012-12-11
    • US12833410
    • 2010-07-09
    • Masahiko TamuraToru MomoseKatsuaki MiyataniTetsuya Nakashima
    • Masahiko TamuraToru MomoseKatsuaki MiyataniTetsuya Nakashima
    • C03B27/00B24C3/08G11B9/04
    • G11B5/8404B24B37/042B24B37/08C03C19/00G11B5/7315
    • The present invention relates to a method for manufacturing a glass substrate for information recording medium, the method including: a lapping step of lapping a circular glass plate made of an alkali aluminosilicate glass; and a subsequent cerium oxide polishing step of polishing the circular glass plate with a slurry containing a cerium oxide abrasive, in which a difference (SiO2−Al2O3) obtained by subtracting an Al2O3 content from an SiO2 content in the alkali aluminosilicate glass is 62% by mole or less; and in which the method further includes: subsequently to the cerium oxide polishing step, a cleaning step of cleaning the circular glass plate with a cleaning liquid having a sulfuric acid concentration of 20% by mass or more and 80% by mass or less and a hydrogen peroxide concentration of 1% by mass or more and 10% by mass or less at a liquid temperature of 50° C. or higher and 100° C. or lower, and after the cleaning step, a finish polishing step of polishing a main surface of the circular glass plate with a slurry containing a colloidal silica abrasive.
    • 本发明涉及一种用于信息记录介质的玻璃基板的制造方法,该方法包括:研磨由铝硅酸铝玻璃制成的圆形玻璃板的研磨步骤; 以及后续的氧化铈抛光步骤,用含有氧化铈磨料的浆料研磨圆形玻璃板,其中通过从碱性铝硅酸盐玻璃中的SiO 2含量减去Al 2 O 3含量而得到的差异(SiO 2 -Al 2 O 3)为62% 摩尔或更少; 该方法还包括:随后的氧化铈抛光步骤,用硫酸浓度为20质量%以上且80质量%以下的清洗液清洗圆形玻璃板的清洗工序, 过氧化氢浓度在50℃以上且100℃以下的液温下为1质量%以上且10质量%以下,在清洗工序后,对主体进行研磨的精抛光工序 具有含有胶体二氧化硅研磨剂的浆料的圆形玻璃板的表面。
    • 5. 发明授权
    • Plasma display panel with improved structure of discharge electrode and dielectric layer
    • 等离子显示面板,具有改善放电电极和电介质层的结构
    • US06445120B1
    • 2002-09-03
    • US09427751
    • 1999-10-27
    • Jae Sung KimMasahiko Tamura
    • Jae Sung KimMasahiko Tamura
    • H01J1704
    • H01J11/12H01J11/24H01J2211/245
    • A plasma display panel in which a structure of a discharge electrode and dielectric layer is provided to generate ultraviolet rays in a positive column area includes: a plurality of first and second bus electrodes successively formed on a substrate at a predetermined interval; a plurality of first discharge electrodes formed with a plurality of first branches branched at a first width for each first bus electrode, a plurality of first centers extended from the first branches to a second width greater than the first width, and a plurality of first ends extended from the first centers to a third width smaller than the second width; a plurality of second discharge electrodes successively branched at a predetermined interval for each second bus electrode and spaced apart from the first ends; and a dielectric layer deposited on areas between the first and second discharge electrodes at a first thickness and on some areas on the first and second discharge electrodes at a second thickness.
    • 提供放电电极和电介质层的结构以在正列区域中产生紫外线的等离子体显示面板包括:以预定间隔连续地形成在基板上的多个第一和第二总线电极; 多个第一放电电极,形成有用于每个第一总线电极以第一宽度分支的多个第一分支,从第一分支延伸到大于第一宽度的第二宽度的多个第一中心,以及多个第一端 从第一中心延伸到小于第二宽度的第三宽度; 对于每个第二总线电极以预定间隔连续分支并与第一端分开的多个第二放电电极; 以及电介质层,其以第一厚度沉积在第一和第二放电电极之间的区域上,并且在第二厚度上沉积在第一和第二放电电极上的一些区域上。
    • 6. 发明授权
    • Piezoelectric diaphragm electro-acoustic transducer
    • 压电隔膜电声换能器
    • US3982143A
    • 1976-09-21
    • US549341
    • 1975-02-12
    • Masahiko TamuraTakashi Oyaba
    • Masahiko TamuraTakashi Oyaba
    • H04R17/00H01L41/08
    • H04R17/005
    • A piezoelectric electro-acoustic transducer which includes a diaphragm having a piezoelectric property, a base plate of a stiff material, and a resilient backing member which is compressedly covered at one side with the base plate and brought into contact at the other side with the diaphragm to provide the diaphragm with resiliency and/or tension, characterized in that the base plate is provided at one side adjacent said backing member with a surface which has a concave and/or a convex curvature to provide the diaphragm with different suitable pressures through said backing member, whereby it has become possible to improve the frequency characteristics, particularly, the low frequency characteristics of the transducer and a high conversion efficiency thereof.
    • 一种压电式电声换能器,其包括具有压电特性的隔膜,刚性材料的基板和弹性背衬构件,所述弹性背衬构件在与所述基板的一侧被压缩地覆盖并且在另一侧与所述隔膜 以提供隔膜具有弹性和/或张力,其特征在于,所述基板设置在邻近所述背衬构件的一侧,具有凹面和/或凸曲率的表面,以通过所述背衬提供具有不同合适压力的隔膜 从而可以提高频率特性,特别是改进换能器的低频特性和高转换效率。
    • 10. 发明授权
    • Method for preparing [F-18-]fluoride ion
    • [F-18-]氟离子的制备方法
    • US06190637B1
    • 2001-02-20
    • US09266603
    • 1999-03-11
    • Sento InoMasahiko TamuraOsamu Itoh
    • Sento InoMasahiko TamuraOsamu Itoh
    • A61K5100
    • G21G1/10C07B59/00G21G2001/0015
    • The present invention provides a method for preparing [F-18]-fluoride ion which comprises the step of bringing [O-18]-enriched water containing [F-18]-fluoride ion formed by proton irradiation of [O-18]-enriched water into contact with a strongly acidic cation exchange resin to remove impurity cations, the step of then bringing the [O-18]-enriched water containing [F-18]-fluoride ion treated above into contact with a weakly basic anion exchange resin to make [F-18]-fluoride ion adsorbed to the resin and, along therewith, to recover the [O-18]-enriched water which has passed through the resin, and the step of eluting and collecting the [F-18]-fluoride ion adsorbed to the weakly basic anion exchange resin. According to the method for preparing [F-18]-fluoride ion of the present invention, [F-18]-fluoride ion can be collected at a high collection efficiency even from a larger amount (about 2 ml or more) of [O-18]-enriched water containing [F-18]-fluoride ion than the amount in prior method, and moreover expensive [O-18]-enriched water can be recovered and reused in the preparation of [F-18]-fluoride ion.
    • 本发明提供了制备[F-18] - 氟化物离子的方法,该方法包括使含有[O-18] - 氟化物离子的[O-18] - 含氟[ 富含水与强酸性阳离子交换树脂接触以除去杂质阳离子,然后将含有上述[F-18] - 氟化物离子的[O-18]富含水的水溶液与弱碱性阴离子交换树脂接触的步骤 使[F-18] - 氟化物离子吸附到树脂上,并与其一起回收已经通过树脂的[O-18]富含水,以及洗脱和收集[F-18] 氟离子吸附到弱碱性阴离子交换树脂上。 根据本发明的[F-18] - 氟化物离子的制备方法,即使从大量(约2ml以上)的[O -18]富含[F-18] - 氟离子的富含水的水,而且[F-18] - 氟化物离子的制备中可以回收并重复使用富含[O-18]的富含水的[F-18] 。