公开(公告)号：US08588573B2

公开(公告)日：2013-11-19

申请号：US13183561

申请日：2011-07-15

申请人： Kenji Okada

发明人： Kenji Okada

IPC分类号： G02B6/00 ,  C03C25/10 ,  C03B37/026

CPC分类号： C03B37/02718 ,  C03B2205/55 ,  C03C25/12 ,  Y02P40/57

摘要： A method for manufacturing an optical fiber in which a flow of a cooling gas within a cooling device is made to be an upward flow and the cooling gas is discharged to outside from an upper end of the cooling device by connecting the cooling device and a coating device in an airtight manner, and closing a flow of the cooling gas which flows toward a coating device within the cooling device using a meniscus of resin within the coating device. A temperature of the cooling gas is increased toward an upper portion of the cooling device from a lower portion of the cooling device by adjusting the flow rate of the cooling gas.

摘要翻译： 一种制造光纤的方法，其中冷却装置内的冷却气体的流动为向上流动，并且冷却气体通过连接冷却装置和涂层而从冷却装置的上端排出到外部 装置，并且使用涂布装置内的树脂弯月形闭合冷却装置内的涂覆装置流动的冷却气体的流动。 通过调节冷却气体的流量，冷却装置的温度从冷却装置的下部朝向冷却装置的上部增加。

公开(公告)号：US08015847B2

公开(公告)日：2011-09-13

申请号：US12432115

申请日：2009-04-29

申请人： Kenji Okada ,  Shingo Matsushita

发明人： Kenji Okada ,  Shingo Matsushita

IPC分类号： C03B37/023

CPC分类号： C03B37/02718 ,  C03C25/12 ,  Y02P40/57

摘要： An optical fiber apparatus and manufacturing method thereof includes: forming a bare optical fiber by melting and deforming an optical fiber preform; cooling the bare optical fiber after the bare optical fiber forming step by passing it through a flow channel of a cooling unit through which cooling gas flows; and forming a protective coating layer by supplying a molten resin to a periphery of the bare optical fiber after the cooling step thereby forming an optical fiber. The cooling gas flowing toward a vertically lower end of the flow channel is blocked by the molten resin used to form the protective coating layer, and carbon dioxide gas is supplied toward the flow channel from a position which is vertically below the supply position of the cooling gas and vertically above the blocking position of the molten resin.

摘要翻译： 一种光纤设备及其制造方法，包括：通过使光纤预制棒熔融变形而形成裸光纤; 在裸光纤形成步骤之后，通过使冷却气体流过的冷却单元的流路通过冷却裸光纤; 以及通过在冷却步骤之后将熔融树脂供应到裸光纤的周边而形成保护涂层，从而形成光纤。 流向流道垂直下端的冷却气被用于形成保护涂层的熔融树脂阻挡，二氧化碳气体从垂直于冷却供给位置的位置向流路供给 气体和垂直于熔融树脂的阻挡位置上方。

公开(公告)号：US08006960B2

公开(公告)日：2011-08-30

申请号：US10593562

申请日：2005-04-01

申请人： Kenji Okada ,  Kunihiro Kaneko

发明人： Kenji Okada ,  Kunihiro Kaneko

IPC分类号： B01F3/04

CPC分类号： F24F6/043 ,  F24F2006/008 ,  F24F2221/12

摘要： One end of a humidify element 12 which has a plurality of humidify segments 24 connected to be free to extend and contract is fixed to a first case portion 28. One end of another humidify element 12 having the same structure is fixed to a second case portion 30. Each other end of the two humidify elements 12 is connected by a connect member 48. An inner space 42 as a water reservoir is formed at the first case portion 28 and the second case portion 30. At the time of non-usage, the first case portion 28 and the second case portion 30 are closed, and the humidify elements 12 and the connect member 48 are stored in the inner space 42. At the time of usage, the first case portion 28 and the second case portion 30 are opened, and the humidify elements 12 are extended. By supplying water to the inner space 42, one end of the plurality of humidify segments 24 is soaked in the water, and the whole humidify element 12 is moistened by capillary.

摘要翻译： 加湿元件12的一端具有连接成自由伸缩的多个加湿段24固定在第一壳体部分28上。具有相同结构的另一加湿元件12的一端固定到第二壳体部分 两个加湿元件12的每个另一端通过连接构件48连接。作为储水器的内部空间42形成在第一壳体部分28和第二壳体部分30上。在不使用时， 第一壳体部分28和第二壳体部分30关闭，并且加湿元件12和连接构件48被存储在内部空间42中。在使用时，第一壳体部分28和第二壳体部分30是 打开，并且加湿元件12延伸。 通过向内部空间42供水，将多个加湿段24的一端浸入水中，整个加湿元件12被毛细管润湿。

公开(公告)号：US07966846B2

公开(公告)日：2011-06-28

申请号：US12540831

申请日：2009-08-13

申请人： Kenji Okada ,  Koichi Harada

发明人： Kenji Okada ,  Koichi Harada

IPC分类号： C03B37/029

CPC分类号： C03B37/032 ,  C03B37/02745 ,  C03B2203/19 ,  C03B2203/36 ,  C03B2205/06

摘要： An optical fiber twisting apparatus that prevents line distortion in an optical fiber undergoing a drawing process and provides a consistent coating on a bare optical fiber. This optical fiber twisting apparatus includes a twist roller apparatus that having a twist roller that, by imparting a twist to an optical fiber, imparts a twist to a molten portion of an optical fiber preform positioned on an upstream side of the optical fiber, and a support portion that supports the twist roller. The accuracy of the outer circumference of the twist roller when the twist roller is forming a part of the twist roller apparatus is 15 μm or less.

摘要翻译： 一种光纤加捻装置，其防止经历拉伸工艺的光纤中的线变形，并在裸光纤上提供一致的涂层。 这种光纤加捻装置包括一个加捻辊装置，该加捻辊装置具有一个加捻辊，通过赋予光纤的扭曲，对位于光纤的上游侧的光纤预制件的熔融部分施加扭曲， 支撑扭转辊的支撑部分。 当加捻辊形成加捻辊装置的一部分时，加捻辊的外周的精度为15μm以下。

公开(公告)号：US20100319405A1

公开(公告)日：2010-12-23

申请号：US12444808

申请日：2008-12-24

申请人： Kenji Okada

发明人： Kenji Okada

IPC分类号： C03C25/10 ,  C03B37/02

CPC分类号： C03B37/032 ,  C03B2205/42 ,  C03C25/12 ,  Y02P40/57

摘要： An optical fiber manufacturing device includes a bare optical fiber-forming unit that forms a bare optical fiber by pulling an optical fiber preform; a coating unit that forms an optical fiber by coating the bare optical fiber outputted from the bare optical fiber-forming unit with a coating layer; a first direction-converter, which is a solid body that comes into contact with the optical fiber outputted from the coating unit and thereby first changing its traveling direction; and a winder that winds the optical fiber obtained from the first direction-converter, in which: the first direction-converter is a rotating body having a circumferential face that contacts with the optical fiber and is formed around an axis of rotation thereof; and the contact angle, centered on the axis of rotation, between this rotating body and the optical fiber is in the range of 10° to 80°.

摘要翻译： 光纤制造装置包括通过拉动光纤预制件形成裸光纤的裸光纤形成单元; 涂覆单元，其通过用涂层涂布从裸光纤形成单元输出的裸光纤形成光纤; 第一方向转换器，其是与从涂布单元输出的光纤接触的固体，从而首先改变其行进方向; 以及卷绕机，其卷绕从第一方向转换器获得的光纤，其中：第一方向转换器是具有与光纤接触的周向面并围绕其旋转轴线形成的旋转体; 并且在该旋转体和光纤之间的以旋转轴为中心的接触角在10°至80°的范围内。

公开(公告)号：US07680390B2

公开(公告)日：2010-03-16

申请号：US12439376

申请日：2008-03-14

申请人： Kenji Okada ,  Junichi Takahashi

发明人： Kenji Okada ,  Junichi Takahashi

IPC分类号： G02B6/00 ,  G02B6/036

CPC分类号： G02B6/02033 ,  G02B6/03605 ,  G02B6/03627 ,  G02B6/03633

摘要： A polymer clad optical fiber is provided in which, if the diameter of an inner core is taken as a1, and the diameter of an outer core is taken as a2, and if a ratio X (which=a22/a12) between a cross-sectional area of the inner core and a cross-sectional area of the outer core is within a range of 1.8≦X≦2.2, and if a relative refractive index difference between the inner core and the outer core is taken as Δ1, and if a relative refractive index difference between the outer core and a cladding is taken as Δ2, then for a parameter Y which is defined as Y=Δ1/Δ2, when a high temperature is taken as Ymax and a low temperature is taken as Ymin, a relationship is established in which, when X is within a range of 1.8≦X≦2.0, then 0.25≦Ymin≦0.84X−0.68, and Ymax is 0.25≦Ymax≦0.84X−0.68, and, when X is within a range of 2.0≦X≦2.2, Ymin is 0.48X−0.71≦Ymin≦−2/9X+13/9, and Ymax is 0.48X−0.71≦Ymax≦−2/9X+13/9.

摘要翻译： 提供一种聚合物包覆光纤，其中如果将内芯的直径取为a1，将外芯的直径作为a2，并且如果将内芯的直径作为a的比例X（= a22 / a12） 内芯的截面面积和外芯的横截面面积在1.8＆lt; NlE; X＆lt; lE; 2.2的范围内，并且如果将内芯和外芯之间的相对折射率差作为＆Dgr; 1， 并且如果将外芯和包层之间的相对折射率差作为＆Dgr; 2，则对于被定义为Y =＆Dgr; 1 /＆Dgr; 2的参数Y，当将高温作为Ymax和 将低温作为Ymin，建立X为1.8＆nlE; X＆nlE; 2.0，则为0.25＆nlE; Ymin＆nlE; 0.84X-0.68，Ymax为0.25＆nlE; Ymax＆nlE; 0.84X- 0.68，并且当X在2.0＆amp; NlE的范围内时，X＆lt; ll; 2.2，Ymin分别为0.48X-0.71＆lt; Ymin＆nlE; -2 / 9X + 13/9，Ymax为0.48X-0.71＆NlE; Ymax＆ / 9X + 13/9。

公开(公告)号：US07372653B2

公开(公告)日：2008-05-13

申请号：US11331805

申请日：2006-01-13

申请人： Hiroaki Suzuki ,  Kenji Okada

发明人： Hiroaki Suzuki ,  Kenji Okada

IPC分类号： G11B5/03

CPC分类号： G11B5/465 ,  G11B5/1278

摘要： Embodiments of the invention provide a hard disk drive that is capable of performing degaussing promptly and properly and a recording method for use with such a hard disk drive. A hard disk drive according to one embodiment of the present invention comprises a current source for supplying a first current, which flows to a write head for writing data onto a magnetic disk; a current source for supplying a second current, which flows to the write head when the polarity of the first current changes; transistors for reversing the polarity of a current flowing to the write head; and a control circuit for exercising control so that the second current I2, which flows from the current source to the write head when the polarity of the first current I1 is reversed, becomes approximately zero before the first current I1 converges to approximately zero during a degauss period.

摘要翻译： 本发明的实施例提供一种能够迅速且适当地进行消磁的硬盘驱动器，以及与这种硬盘驱动器一起使用的记录方法。 根据本发明的一个实施例的硬盘驱动器包括用于提供第一电流的电流源，其流到写入头以将数据写入磁盘; 用于提供第二电流的电流源，当第一电流的极性改变时流向写入头; 用于反转流向写入头的电流的极性的晶体管; 以及用于进行控制的控制电路，使得当第一电流I 1的极性反转时从电流源流向写入头的第二电流I 2在第一电流I 1收敛到大约零之前变为约零 在消磁期间。

公开(公告)号：US07342735B2

公开(公告)日：2008-03-11

申请号：US11223481

申请日：2005-09-08

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

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

IPC分类号： G11B21/02

CPC分类号： G11B5/59633 ,  G11B5/59666

摘要： Embodiments of the invention relate to writing servo patterns having aligned phases onto a recording disk in a process to write the servo patterns onto the disk. In one embodiment, time aligned patterns are written onto a magnetic disk on the basis of time intervals between base patterns with timings aligned to each other throughout tracks on the disk. The time aligned patterns are written onto typically servo tracks at time intervals Ts with aligned timings. Then, on the basis of these time aligned patterns, product servo patterns are written onto the disk. A time aligned pattern is written onto the disk after the lapse of a predetermined write time period since detection of a base pattern corresponding to the time aligned pattern. The write time period is determined on the basis of time intervals between base patterns on adjacent tracks.

摘要翻译： 本发明的实施例涉及在将伺服模式写入到盘上的过程中将具有排列相位的伺服模式写入到记录盘上。 在一个实施例中，基于在盘上的轨迹上彼此对准的定时的基本图案之间的时间间隔，将时间对准图案写入磁盘。 时间对准图案以对准的定时以时间间隔Ts被写入典型的伺服轨道。 然后，基于这些时间对准图案，将产品伺服模式写入到盘上。 在经过预定的写入时间段之后，由于检测到与时间对准图案对应的基本图案，时间对准图案被写入到盘上。 基于相邻轨道上的基本图案之间的时间间隔来确定写入时间段。

公开(公告)号：US07283344B2

公开(公告)日：2007-10-16

申请号：US10875526

申请日：2004-06-24

申请人： Tatsuya Mukai ,  Nobuhiro Kitamura ,  Yukihiro Murata ,  Kenji Okada

发明人： Tatsuya Mukai ,  Nobuhiro Kitamura ,  Yukihiro Murata ,  Kenji Okada

IPC分类号： H02H3/00

CPC分类号： H03K17/0822 ,  H03K17/6874

摘要： In an electronic switch which includes a pair of terminal portions 14, 14, and self arc-suppressing elements Q21, Q22 having a one-way on and off control construction connected in inverse-series between the pair of terminal portions and which turns on and off the self arc-suppressing elements Q21, Q22 with phase control, shunt resistors R51, R52 provided between the pair of terminal portions 14, 14 and connected in series to the pair of self arc-suppressing elements Q21, Q22 and thyristors S71, S72 for extracting the gate voltages applied to gates of the self arc-suppressing elements Q21, Q22 upon driving are provided. Furthermore, thyristors S71, S72 are driven by the voltages across the shunt resistors R51, R52 generated when overcurrent larger than predetermined current flows through the shunt resistors R51, R52.

摘要翻译： 在包括一对端子部分14,14以及具有单向导通和关断控制结构的自灭弧元件Q 21，Q 22的电子开关中，该一对端子部分14和14反向串联连接在该对端子部分之间， 在具有相位控制的自灭弧元件Q 21，Q 22上，分别设置在一对端子部14,14之间的分流电阻器R 51，R 52，并与该一对自电弧抑制元件Q21串联连接 Q 22和用于提取在驱动时施加到自消弧元件Q21，Q22的栅极的栅极电压的晶闸管S 71，S 72。 此外，晶闸管S71，S72由跨过分流电阻器R 51，R 52流过大于预定电流的过电流产生的分流电阻器R51，R52两端的电压驱动。

公开(公告)号：US20060204193A1

公开(公告)日：2006-09-14

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： G02B6/02

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）。