公开(公告)号：US08631669B2

公开(公告)日：2014-01-21

申请号：US13090693

申请日：2011-04-20

申请人： Kenji Okada

发明人： Kenji Okada

IPC分类号： C03B37/029

CPC分类号： C03B37/029 ,  C03B37/02736 ,  C03B2205/80 ,  C03B2205/81

摘要： An optical fiber manufacturing apparatus including: a heating furnace in which an optical fiber is formed by melt-drawing an optical fiber preform; a sealing mechanism which is provided on an opening portion located at an upstream of the heating furnace and seals the heating furnace with an inert gas; a first pipe which is connected to the heating furnace and introduces the gas into the heating furnace; a second pipe which is connected to a lowermost compartment closest to the heating furnace among the compartments and introduces the gas into the lowermost compartment; and a gas flow rate control unit which controls a total sum of a flow rate of a gas supplied from the first pipe into the heating furnace and a flow rate of a gas supplied from the second pipe into the lowermost compartment to be substantially constant.

摘要翻译： 一种光纤制造装置，包括：加热炉，其中通过熔融拉伸光纤预制棒形成光纤; 密封机构，设置在位于加热炉的上游侧的开口部，用惰性气体密封加热炉; 第一管，其连接到加热炉并将气体引入加热炉; 第二管，其连接到隔室中最靠近加热炉的最下室，并将气体引入最下室; 以及气体流量控制单元，其控制从第一管供给到加热炉中的气体的流量与从第二管供给到最下室的气体的流量的总和大致恒定。

公开(公告)号：US08195019B2

公开(公告)日：2012-06-05

申请号：US12648021

申请日：2009-12-28

申请人： Kenji Okada ,  Naritoshi Yamada ,  Shoichiro Matsuo

发明人： Kenji Okada ,  Naritoshi Yamada ,  Shoichiro Matsuo

IPC分类号： G02B6/36

CPC分类号： G02B6/03622 ,  G02B6/02033

摘要： A plastic glass optical fiber includes a glass core (diameter a1, relative refractive index difference Δ1, and refractive index n1), a polymer core (diameter a2, relative refractive index difference Δ2, and refractive index n2), and a polymer cladding (refractive index n3), in which the diameter a1 of the glass core is within a range of 110 μm to 200 μm, a parameter X (X is a22/a12) is within a range of 1.15≦X≦2.9, a parameter Y (Y is Δ2/Δ1) is within a range of 0.25≦Y≦0.84X−0.68 (when 1.15≦X≦2) or 0.48X−0.71≦Y≦−(2/9)X+13/9 (when 2≦X≦2.9), a parameter ZR (ZR is Z2core/Z1core; Z2core=a22π/4×√(n12−n32) and Z1core=a12π/4×√(n12−n22)) is within a range of 1.25≦ZR≦4.

摘要翻译： 塑料玻璃光纤包括玻璃芯（直径a1，相对折射率差Dgr; 1和折射率n1），聚合物芯（直径a2，相对折射率差Dgr; 2和折射率n2）和 聚合物包层（折射率n3），其中玻璃纤芯的直径a1在110μm至200μm的范围内，参数X（X是a22 / a12）在1.15＆lt; 1EE的范围内; X＆ 参数Y（Y为＆Dgr; 2 /＆Dgr; 1）在0.25＆nlE; Y＆nlE; 0.84X-0.68（当1.15＆nlE; X＆lt; ll; 2）或0.48X-0.71＆NlE; Y＆ 9）X + 13/9（当2＆nlE; X＆nlE; 2.9），参数ZR（ZR是Z2core / Z1core; Z2core = a22＆pgr; / 4×√（n12-n32）和Z1core = a12＆pgr; / 4×√ -n22））在1.25≤n1E的范围内; ZR＆nlE; 4。

公开(公告)号：US07658086B2

公开(公告)日：2010-02-09

申请号：US11433576

申请日：2006-05-15

申请人： Kenji Okada ,  Koichi Harada ,  Shunichirou Hirafune ,  Munehisa Fujimaki

发明人： Kenji Okada ,  Koichi Harada ,  Shunichirou Hirafune ,  Munehisa Fujimaki

IPC分类号： C03B37/023

CPC分类号： C03B37/0253 ,  C03B37/02718 ,  C03B37/029 ,  C03B2201/23 ,  C03B2205/40 ,  C03B2205/56 ,  C03B2205/72 ,  C03C13/045 ,  C03C2201/23 ,  Y02P40/57

摘要： A drawing method for a bare optical fiber, comprises the steps of: melting an optical fiber preform using a heating device and drawing the bare optical fiber; and naturally cooling down the bare optical fiber or forcibly cooling down the bare optical fiber by a cooling device after the heating and melting step, wherein a temperature history during the drawing the optical fiber preform to obtain the bare optical fiber in the heating device satisfies a relational expression: T≦−0.01X+12 where a time period when the heated and molten portion of the optical fiber preform heated and molten by the heating device reaches 1800° C. or higher is T (min) and a OH group concentration in a cladding layer of the optical fiber preform is X (wtppm).

摘要翻译： 一种裸光纤的拉丝方法，包括以下步骤：使用加热装置熔化光纤预制棒并拉制裸光纤; 并且在加热熔融步骤之后自然地冷却裸光纤或强制地冷却裸光纤，其中在加热装置中获得裸光纤的拉伸期间的温度历史满足了 关系表达式：T <= -0.01X + 12其中加热装置加热熔化的光纤预制件的加热和熔融部分达到1800℃或更高的时间段为T（min），OH基浓度 在光纤预制件的包覆层中为X（wtppm）。

公开(公告)号：US07446967B2

公开(公告)日：2008-11-04

申请号：US11222913

申请日：2005-09-08

申请人： Minoru Hashimoto ,  Kenji Okada ,  Fuminori Sai ,  Chikako Sasaki ,  Satoshi Yamamoto

发明人： Minoru Hashimoto ,  Kenji Okada ,  Fuminori Sai ,  Chikako Sasaki ,  Satoshi Yamamoto

IPC分类号： G11B21/02

CPC分类号： G11B27/36 ,  G11B5/3166 ,  G11B5/455 ,  G11B5/59633 ,  G11B5/59666 ,  G11B2220/2516

摘要： Embodiments of the invention relate to measuring characteristics of a head with an actuator put in a state of being pushed against a crush stop. In one embodiment, with a head placed on an innermost ID side or with the current of a VCM sustained at a magnitude I_mid, a burst pattern is written onto a recording disk. At this stage, the gain of a VGA is equal to its maximum value Gmax. Then, while the current of the VCM is being changed gradually, the gain of the VCA is measured. As the current of the VCM becomes equal to a magnitude I_center, a read element of the head is positioned right above the burst pattern. At that time, the gain of a VGA is equal to its minimum value Gmin. As the read element is further moved to the OD side, the gain of the VGA again becomes equal to the maximum value Gmax. A read/write offset of the head is identified by the magnitudes I_center and I_mid.

摘要翻译： 本发明的实施例涉及测量具有致动器的头部的特性，所述致动器处于被压靠在挤压止动件上的状态。 在一个实施例中，当头部放置在最内侧的ID侧或者VCM的电流维持在幅度I_mid时，突发图案被写入到记录盘上。 在这个阶段，VGA的增益等于其最大值Gmax。 然后，当VCM的电流逐渐变化时，测量VCA的增益。 当VCM的电流变得等于幅度I_center时，头部的读取元件位于突发图案的正上方。 此时VGA的增益等于其最小值Gmin。 当读取元件进一步移动到OD侧时，VGA的增益再次等于最大值Gmax。 磁头的读/写偏移量由I_center和I_mid的大小识别。

公开(公告)号：US20070276057A1

公开(公告)日：2007-11-29

申请号：US10561330

申请日：2004-06-18

申请人： Kenji Okada ,  Jun Kotani ,  Yoshiki Nakagawa

发明人： Kenji Okada ,  Jun Kotani ,  Yoshiki Nakagawa

IPC分类号： C08K5/098

CPC分类号： C08K5/098 ,  C08F299/00 ,  C08K5/14 ,  C08L33/14

摘要： The present invention provides a curable composition comprising: (A) a vinyl polymer (I) comprising, at the molecular terminus, at least one group represented by the general formula (1): CH2═C(Ra)—C(O)O—  (1) wherein Ra represents a hydrogen atom or a monovalent organic group having 1 to 20 carbon atoms, (B) a polymerization initiator, and (C) a metallic soap. The curable composition comprising a vinyl polymer has superior mold release properties without a substantial decrease in mechanical properties such as compression set.

摘要翻译： 本发明提供一种可固化组合物，其包含：（A）在分子末端包含至少一个由通式（1）表示的基团的乙烯基聚合物（I）：<？in-line-formula description =“In- 线式“end =”lead“？> CH 2 -C（R a）a C（O）O-（1）<β在线公式描述 其中R a a表示氢原子或碳原子数1〜20的1价有机基团，（B）聚合引发剂，（C ）金属皂。 包含乙烯基聚合物的可固化组合物具有优异的脱模性能，而不会显着降低机械性能如压缩永久变形。

公开(公告)号：US20070208098A1

公开(公告)日：2007-09-06

申请号：US10594228

申请日：2005-03-25

申请人： Kenji Okada ,  Yoshiki Nakagawa

发明人： Kenji Okada ,  Yoshiki Nakagawa

IPC分类号： C08F2/46

CPC分类号： C08F290/06 ,  C08F4/00 ,  C08F8/26 ,  C08F265/00 ,  C08F265/04 ,  C08F290/061 ,  C08F299/00 ,  C08F2800/10 ,  C08F2810/30 ,  C08F2810/40 ,  C08J3/243 ,  C08L33/00 ,  C08L51/003 ,  C08L63/00 ,  C08L71/00 ,  C09D151/003 ,  G03F7/038 ,  G03F7/0388 ,  C08L2666/04 ,  C08L2666/02 ,  C08F2220/1808

摘要： A curable composition having a low viscosity and providing a satisfactory rubber cured article is provided. A composition curable by radical photo curing and cationic photo curing in combination, comprising the under-mentioned components (A), (B), (C) and (D) as essential components: (A) a vinyl polymer having two or more acryloyl group or the like per molecule, the acryloyl groups or the like being present at one or more molecular ends; (B) an epoxy compound and/or an oxetane compound; (C) a radical photopolymerization initiator; and (D) a cationic photopolymerization initiator.

摘要翻译： 提供了具有低粘度并提供令人满意的橡胶固化制品的可固化组合物。 包含下述组分（A），（B），（C）和（D））作为必需组分的组合可固化的可通过光固化和阳离子光固化的组合物：（A）具有两个或更多个丙烯酰基 基团等，丙烯酰基等存在于一个或多个分子末端; （B）环氧化合物和/或氧杂环丁烷化合物; （C）自由基光聚合引发剂; 和（D）阳离子光聚合引发剂。

公开(公告)号：US20060115910A1

公开(公告)日：2006-06-01

申请号：US11283993

申请日：2005-11-22

申请人： Kenji Okada

发明人： Kenji Okada

IPC分类号： H01L21/66

CPC分类号： G01R31/2648

摘要： The type of subordinate carrier in current flowing through a target insulating film is determined. Then, the total amount Q of subordinate carriers injected until an insulating-film sample causes dielectric breakdown under electrical stress application to the insulating-film sample is obtained. Thereafter, the current amount I of the subordinate carrier flowing through the target insulating film to which a stress voltage at which a lifetime TBD of the target insulating film is to be obtained is applied is obtained. Lastly, the lifetime TBD is calculated based on Equation (1): ∫0TBDIdt=Q  (1)

摘要翻译： 确定流过目标绝缘膜的电流中的从属载体的类型。 然后，获得了在绝缘膜样品在绝缘膜样品的电应力施加下导致介电击穿之前注入的下级载流子总量Q。 此后，得到流过目标绝缘膜的下位载流子的电流量I，其中要获得目标绝缘膜的寿命T BD BD应力电压。 最后，基于等式（1）来计算寿命T BD：<？in-line-formula description =“In-line Formulas”end =“lead”？>∫0 < Idt = Q（1）<？in-line-formula description =“In-line Formulas”end =“ 尾巴“？>

公开(公告)号：US20060056097A1

公开(公告)日：2006-03-16

申请号：US11222913

申请日：2005-09-08

申请人： Minoru Hashimoto ,  Kenji Okada ,  Fuminori Sai ,  Chikako Sasaki ,  Satoshi Yamamoto

发明人： Minoru Hashimoto ,  Kenji Okada ,  Fuminori Sai ,  Chikako Sasaki ,  Satoshi Yamamoto

IPC分类号： G11B21/02 ,  G11B5/09 ,  G11B27/36

CPC分类号： G11B27/36 ,  G11B5/3166 ,  G11B5/455 ,  G11B5/59633 ,  G11B5/59666 ,  G11B2220/2516

摘要： Embodiments of the invention relate to measuring characteristics of a head with an actuator put in a state of being pushed against a crush stop. In one embodiment, with a head placed on an innermost ID side or with the current of a VCM sustained at a magnitude I_mid, a burst pattern is written onto a recording disk. At this stage, the gain of a VGA is equal to its maximum value Gmax. Then, while the current of the VCM is being changed gradually, the gain of the VCA is measured. As the current of the VCM becomes equal to a magnitude I_center, a read element of the head is positioned right above the burst pattern. At that time, the gain of a VGA is equal to its minimum value Gmin. As the read element is further moved to the OD side, the gain of the VGA again becomes equal to the maximum value Gmax. A read/write offset of the head is identified by the magnitudes I_center and I_mid.

摘要翻译： 本发明的实施例涉及测量具有致动器的头部的特性，所述致动器处于被压靠在挤压止动件上的状态。 在一个实施例中，当头部放置在最内侧的ID侧或者VCM的电流维持在幅度I_mid时，突发图案被写入到记录盘上。 在这个阶段，VGA的增益等于其最大值Gmax。 然后，当VCM的电流逐渐变化时，测量VCA的增益。 当VCM的电流变得等于幅度I_center时，头部的读取元件位于突发图案的正上方。 此时VGA的增益等于其最小值Gmin。 当读取元件进一步移动到OD侧时，VGA的增益再次等于最大值Gmax。 磁头的读/写偏移量由I_center和I_mid的大小识别。

公开(公告)号：US20050094299A1

公开(公告)日：2005-05-05

申请号：US10944356

申请日：2004-09-17

申请人： Akira Tokizono ,  Chikako Sasaki ,  Kenji Okada

发明人： Akira Tokizono ,  Chikako Sasaki ,  Kenji Okada

IPC分类号： G11B21/21 ,  G11B5/09 ,  G11B5/596 ,  G11B5/60 ,  G11B20/18 ,  G11B21/02 ,  G11B21/10 ,  G11B21/12 ,  G11B27/36

CPC分类号： G11B5/6005 ,  G11B21/12

摘要： Embodiments of the present invention relate to detecting a flying high state in which a head/slider is flying stably at a high flying position, and then to restore the head/slider to a normal flying position. The detection is made by detecting a read output of a head using a head output detector, and by detecting a gain of a VGA using a gain detector. A control unit uses a value measured in a normal flying state as a reference value to compare a detected value with the reference value. If the compared values differ from each other, the control unit judges that a flying high state has occurred. The control unit, therefore, moves the head/slider to the vicinity of the innermost circumferential track of the disk, or unloads the head/slider.

摘要翻译： 本发明的实施例涉及检测头/滑块在高飞行位置稳定地飞行的飞行高状态，然后将头/滑块恢复到正常的飞行位置。 通过使用头部输出检测器检测头的读取输出，并通过使用增益检测器检测VGA的增益来进行检测。 控制单元使用以正常飞行状态测量的值作为参考值，以将检测值与参考值进行比较。 如果比较值彼此不同，则控制单元判断已经发生飞行高状态。 因此，控制单元将磁头/滑块移动到磁盘的最内圆周轨道附近，或者卸载磁头/滑块。

公开(公告)号：US06831809B2

公开(公告)日：2004-12-14

申请号：US10086204

申请日：2002-02-27

申请人： Naoyuki Kagami ,  Kenji Okada ,  Tetsuo Semba ,  Akira Tokizono ,  Hiroshi Uchida ,  Akinori Yuba

发明人： Naoyuki Kagami ,  Kenji Okada ,  Tetsuo Semba ,  Akira Tokizono ,  Hiroshi Uchida ,  Akinori Yuba

IPC分类号： G11B5596

CPC分类号： G11B5/59622

摘要： A control arrangement having a feedforward system and a feedback system, a control model for generating reference position data from a feedforward control signal is separated into an original control model and a compensation filter. Gain of the feedforward control signal is compensated by a gain compensation circuit to form a feedforward control signal after compensation. The reference position data is input to a feedback controller, and a feedback control signal and feedforward control signal are input to a control object. Coefficients of the compensation filter and the gain compensation circuit are compensated on the basis of a head position trajectory obtained by actual seek operation.

摘要翻译： 具有前馈系统和反馈系统的控制装置，用于从前馈控制信号产生参考位置数据的控制模型被分离成原始控制模型和补偿滤波器。 前馈控制信号的增益由增益补偿电路补偿，以在补偿后形成前馈控制信号。 参考位置数据被输入到反馈控制器，反馈控制信号和前馈控制信号被输入到控制对象。 补偿滤波器和增益补偿电路的系数基于通过实际寻道操作获得的磁头位置轨迹进行补偿。