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    Air-tight sintering furnace for the production of a quartz preform
    12.
    发明授权
    Air-tight sintering furnace for the production of a quartz preform 失效
    用于生产QUARTZ预制件的空气烧结炉

    公开(公告)号：US5133796A

    公开(公告)日：1992-07-28

    申请号：US613878

    申请日：1990-11-28

    申请人： Ichiro Tsuchiya ,  Masahide Saito ,  Shinji Ishikawa ,  Toshimi Habasaki

    发明人： Ichiro Tsuchiya ,  Masahide Saito ,  Shinji Ishikawa ,  Toshimi Habasaki

    IPC分类号： C03B8/04 ,  C03B20/00 ,  C03B37/014

    CPC分类号： C03B37/0146 ,  C03B2201/12 ,  Y10S65/90

    摘要： This invention relates to a sintering furnace for the production of a quartz preform which can be used for carrying out dehydration, fluorine-addition and/or sintering of a porous quartz soot preform prepared by a flame hydrolysis method such as a VAD method or a OVD method, and in particular, to such a furnace in which joints in a long furnace muffle so long that fabricating it as open body is impossible can be maintained fully gas-tight, so that it is possible to prevent H.sub.2 O, O.sub.2 and other impurities in the air from entering the muffle from outside, and corrosive and poisonous gases in the muffle are prevented from leakage to outside the muffle. This sintering furnace has a muffle of high purity carbon, the inner wall and/or outer wall of which is coated with a gas-impermeable film, which muffle is a cylinder with an axis in the longitudinal direction and divided into a plurality of parts in the longitudinal direction, the parts each having the upper and lower ends finished so as to be flat and abutting adjacent parts sealed by a carbon gasket between them, and further has an air cylinder for pressing the parts together in the axial direction with a uniform force around the circumference of the muffle.

    摘要翻译： PCT No.PCT / JP90 / 00418 Sec。 371日期1990年11月28日 102（e）1990年11月28日PCT PCT 1990年3月28日PCT公布。 出版物WO90 / 11973 1990年10月18日的日期。本发明涉及一种用于生产石英预制棒的烧结炉，其可用于对通过火焰水解法制备的多孔石英烟灰预制件进行脱水，加氟和/或烧结 作为VAD方法或OVD方法，特别是在这样一种炉子中，其中长炉膛中长度相等的接头不可能被保持为开放体，从而可以完全保持气密性，从而可以防止 空气中的H2O，O2和其他杂质从外部进入马弗炉，并且防止马弗炉中的腐蚀性和有毒气体泄漏到马弗炉外部。 该烧结炉具有高纯度碳的马弗管，其内壁和/或外壁涂有气体不可渗透膜，该马弗管是沿纵向轴线的圆筒，并分成多个部分 纵向方向，上下两端的部分被平坦化并邻接在它们之间的碳垫圈密封的相邻部分，并且还具有用于以均匀的力在轴向上将部件按压在一起的气缸 围绕马弗炉的圆周。

    Optical fiber coupler making apparatus made from zirconia and method
    13.
    发明授权
    Optical fiber coupler making apparatus made from zirconia and method 失效
    由氧化锆制成的光纤耦合器制造装置及方法

    公开(公告)号：US06543256B1

    公开(公告)日：2003-04-08

    申请号：US09590166

    申请日：2000-06-09

    申请人： Toshiki Taru ,  Ichiro Tsuchiya

    发明人： Toshiki Taru ,  Ichiro Tsuchiya

    IPC分类号： C03B37029

    CPC分类号： C03B37/15 ,  G02B6/2835 ,  G02B6/2856 ,  Y02P40/57

    摘要： In an optical fiber coupler making apparatus which makes an optical fiber coupler by thermally fusing a plurality of optical fibers together by use of a heater and then elongating thus thermally fused part, the heater comprises a heating element which is made of zirconia and which has a slit for containing the optical fibers. The inner face of the heating element is preferentially heated due to a characteristic of its material. Consequently, if optical fibers are contained in the fiber receiving slit, then they can be thermally fused at a sufficiently high temperature in a short period of time, whereby reducing mingling of impurities into the optical fiber coupler. Therefore, the heating element made of zirconia is effective as means for preventing impurities from mingling from the outside thereof. Also, performances of the heating element can be maintained over a long period of time even if the optical fibers are thermally fused at a high temperature. Further, the evaporation of impurities, which may adversely affect characteristics of the optical fiber coupler, hardly occurs from the heating element.

    摘要翻译： 在通过使用加热器将多根光纤热熔合在一起并随后拉伸这样的热熔融部分而制造光纤耦合器的光纤耦合器制造装置中，加热器包括由氧化锆制成的加热元件， 用于容纳光纤的狭缝。 由于其材料的特性，加热元件的内表面被优先加热。 因此，如果在光纤接收狭缝中包含光纤，则可以在短时间内以足够高的温度热熔融，从而减少杂质混入光纤耦合器中。 因此，由氧化锆制成的加热元件作为防止杂质从其外部混合的手段是有效的。 此外，即使光纤在高温下热熔融，也可以长时间保持加热元件的性能。 此外，可能不利地影响光纤耦合器的特性的杂质的蒸发几乎不会从加热元件发生。

    Method of making an optical fiber with an improved UV-curable resin
    14.
    发明授权
    Method of making an optical fiber with an improved UV-curable resin 有权
    制备具有改进的UV固化树脂的光纤的方法

    公开(公告)号：US06530243B1

    公开(公告)日：2003-03-11

    申请号：US09659831

    申请日：2000-09-11

    申请人： Kazuya Kuwahara ,  Ichiro Tsuchiya ,  Yasuhiro Naganuma

    发明人： Kazuya Kuwahara ,  Ichiro Tsuchiya ,  Yasuhiro Naganuma

    IPC分类号： C03B37027

    CPC分类号： C03B37/027 ,  C03B37/032 ,  C03B2205/40 ,  C03C25/12 ,  Y02P40/57

    摘要： A method of drawing an optical fiber which can improve the efficiency in manufacture without deforming resin coatings is provided. The method of drawing an optical fiber in accordance with the present invention is a method in which an optical fiber yielding an outside diameter of 300 to 600 &mgr;m after a resin coating is formed is drawn at a drawing speed of at least 50 m/min, wherein the optical fiber is drawn in a state where the pass line length zp from the outlet of curing furnace to the entrance part of capstan satisfies the following expression (1): z p ≥ - ρ ⁢   ⁢ C p _ · d 2 4 · d 2 2 - d 1 2 A · V f · ln ⁡ [ ( T g - 10 ) - T o T s - T o ] ( 1 ) where Tg is the glass transition temperature of the coating resin [° C.]; TS is the fiber temperature [=TF(0)] at z=0 [° C.]; TO is the room temperature [° C.]; {overscore (&rgr;Cp)} is the average heat capacity of glass and resin [J/(cm3·° C.)]; d1 is the radius before coating [cm]; d2 is the radius after coating [cm]; A is a given constant within the range of 1.5×10−6 to 4.5×10−6 [J/(sec·° C.)]; and Vf is the drawing speed [cm/sec].

    摘要翻译： 提供一种拉伸光纤的方法，其可以在不使树脂涂层变形的情况下提高制造效率。 根据本发明的拉伸光纤的方法是在形成树脂涂层后产生300-600μm的外径的光纤以至少50m / min的拉伸速度被拉伸， 其中在从固化炉的出口到主导轴的入口部分的通过线路长度zp满足以下表达式（1）的情况下拉制光纤：其中T g是涂层树脂的玻璃化转变温度[℃] ; TS是z = 0 [℃]时的纤维温度[= TF（0）]; TO是室温[℃]; {overscore（rhoCp是玻璃和树脂的平均热容量[J / （cm 3·℃）]; d1是涂布前的半径[cm]; d2是涂布后的半径[cm]; A是在1.5×10 -6至4.5×10 -6 [J / （sec。°C）]; vf是拉伸速度[cm / sec]。

    Recording sheet for ink-jet recording and ink jet
    15.
    发明授权
    Recording sheet for ink-jet recording and ink jet 失效
    用于喷墨记录和喷墨的记录纸

    公开(公告)号：US6057026A

    公开(公告)日：2000-05-02

    申请号：US008980

    申请日：1998-01-20

    申请人： Ichiro Tsuchiya ,  Hiroyuki Uemura

    发明人： Ichiro Tsuchiya ,  Hiroyuki Uemura

    IPC分类号： B41M5/00 ,  B41M5/50 ,  B41M5/52

    CPC分类号： B41M5/5227 ,  B41M5/506 ,  B41M5/508 ,  B41M5/5236 ,  B41M5/5254 ,  Y10T428/31786 ,  Y10T428/31855 ,  Y10T428/31895 ,  Y10T428/31902 ,  Y10T428/31993

    摘要： A recording sheet for ink-jet recording comprising a support, and provided on one side of the support, an ink receiving layer, wherein the ink receiving layer contains a compound represented by the following formula I: ##STR1## wherein Q.sup.1 and Q.sup.2 independently represent a non-metallic atomic group necessary to form an acidic nitrogen-containing heterocyclic ring; L.sup.1, L.sup.2, and L.sup.3 independently represent a substituted or unsubstituted methine group; M represents a cationic group; m represents an integer of 0 to 4; and n represents a number necessary to neutralize the charge of the molecule.

    摘要翻译： 一种用于喷墨记录的记录纸，包括支撑体，并且在支撑体的一侧上设置有油墨接收层，其中油墨接收层含有由下式I表示的化合物：其中Q1和Q2独立地表示非 - 形成酸性含氮杂环所必需的金属原子团; L1，L2和L3独立地表示取代或未取代的次甲基; M表示阳离子基团; m表示0〜4的整数， n表示中和分子的电荷所需的数。

    Drawing method of optical fiber and drawing furnace
    19.
    发明授权
    Drawing method of optical fiber and drawing furnace 失效
    光纤拉丝炉拉丝方法

    公开(公告)号：US06907757B2

    公开(公告)日：2005-06-21

    申请号：US10078269

    申请日：2002-02-20

    申请人： Kazuya Kuwahara ,  Katsuya Nagayama ,  Ichiro Tsuchiya ,  Masashi Onishi

    发明人： Kazuya Kuwahara ,  Katsuya Nagayama ,  Ichiro Tsuchiya ,  Masashi Onishi

    IPC分类号： G02B6/00 ,  C03B37/027 ,  C03B37/029 ,  C03B37/07 ,  C03B37/02

    CPC分类号： C03B37/029 ,  C03B2205/63 ,  Y02P40/57

    摘要： The drawing method of the present invention uses a drawing furnace comprising a furnace muffle tube, a furnace body and a heater. According to the method, an optical fiber preform is inserted from the inlet of the furnace muffle tube, the optical fiber preform is melted by means of a heater, under a specified gas atmosphere, and is drawn toward the outlet of the furnace muffle tube by means of a specified drawing tension. The optical fiber preform and the drawing furnace used in this method both satisfy the condition of below-indicated formula (1): L/D≧8  (1) wherein L indicates the length of the furnace body in the drawing direction and D indicates the diameter of the optical fiber preform. Through this method, even for the case of drawing optical fibers having a large relative index difference between the central core and the cladding, optical fibers wherein residual amounts of lattice defects are sufficiently reduced and degradation of characteristics under a hydrogen atmosphere is sufficiently suppressed can be obtained efficiently and at low cost.

    摘要翻译： 本发明的拉拔方法使用包括炉马弗管，炉体和加热器的拉丝炉。 根据该方法，从炉马弗管的入口插入光纤预制棒，在特定的气体气氛下，通过加热器将光纤预制棒熔化，并通过炉管马弗管的出口向炉马弗管的出口拉出 指定图纸张力的手段。 本方法中使用的光纤预制棒和拉丝炉均满足下述式（1）的条件：<？in-line-formula description =“In-line formula”end =“lead”？> L / D > = 8（1）<？in-line-formula description =“In-line Formulas”end =“tail”？>其中L表示炉体在拉伸方向上的长度，D表示光纤的直径 预制件。 通过这种方法，即使在中心纤芯和包层之间绘制相对折射率差大的光纤的情况下，也可充分地抑制晶格缺陷残留量的充分降低，氢气氛下的特性劣化得到充分抑制的光纤， 有效地以低成本获得。

    Method of controlling an upper portion of an optical fiber draw furnace
    20.
    发明授权
    Method of controlling an upper portion of an optical fiber draw furnace 有权
    控制光纤拉丝炉上部的方法

    公开(公告)号：US06810692B2

    公开(公告)日：2004-11-02

    申请号：US10445814

    申请日：2003-05-28

    申请人： Toshiki Taru ,  Katsuya Nagayama ,  Kazuya Kuwahara ,  Ichiro Tsuchiya

    发明人： Toshiki Taru ,  Katsuya Nagayama ,  Kazuya Kuwahara ,  Ichiro Tsuchiya

    IPC分类号： C03B37027

    CPC分类号： C03B37/029 ,  C03B2205/63 ,  C03B2205/74 ,  C03B2205/80 ,  C03B2205/90 ,  C03B2205/92 ,  C03B2205/98

    摘要： A furnace for drawing an optical fiber provided with a muffle tube (10) and inner tubes (5,5′) connected to the upper end of the core tube, wherein a preform (1) supported by a dummy rod (2) at the upper part thereof is disposed inside the muffle tube (10) and inner tubes (5,5′) so as to be movable downward together with dummy rod (2), the preform (1) is heated and melted by a heater (11) from the outside of the muffle tube (10) and an optical fiber (1a) is pulled out from the lower end of the preform (1); the furnace is further provided with one or a plurality of sets of separating plates (4, 17) adapted to partition a space in the inner tubes (5,5′) above the preform (1) into a plurality of portions in the advance direction of the preform and disposed in the space, and with gas blowing inlets (8) disposed in the parts of wall surfaces of the inner tubes (5,5′) which are below the separating plates (4, 17) and adapted to blow an inert gas into the inner tubes (5,5′) and the muffle tube (10), thereby preventing variations in diameter of the optical fiber (1a).

    摘要翻译： 一种用于拉制设置有马弗管（10）的光纤和连接到芯管的上端的内管（5,5'）的炉，其中，在所述芯管的上端由所述虚拟棒（2）支撑的预成型件（1） 其上部设置在马弗管（10）和内管（5,5'）的内部，以便与虚拟棒（2）一起向下移动，预成型件（1）由加热器（11）加热和熔化， 从马弗管（10）的外部和光纤（1a）从预成型件（1）的下端拉出; 炉还设置有一组或多组分离板（4,17），其适于将预成型件（1）上方的内管（5,5'）中的空间分隔成前进方向的多个部分 并且设置在所述空间中，并且具有设置在所述分隔板（4,17）下方的内管（5,5'）的壁表面的部分中的气体吹入口（8），并且适于吹塑 惰性气体进入内管（5,5'）和马弗管（10），从而防止光纤（1a）的直径变化。