公开(公告)号：US5064687A

公开(公告)日：1991-11-12

申请号：US668821

申请日：1991-03-13

申请人： Akihiro Matsufuji ,  Kiyomi Ejiri ,  Mikio Ohno ,  Masatoshi Kiyama ,  Kunihiko Honda

发明人： Akihiro Matsufuji ,  Kiyomi Ejiri ,  Mikio Ohno ,  Masatoshi Kiyama ,  Kunihiko Honda

IPC分类号： G11B5/842

CPC分类号： G11B5/842

摘要： A method for making a magnetic recording medium comprises the steps of mixing ferromagnetic grains and a surface treating agent, grinding the resulting mixture, and thus obtaining a ground mixture. A binder and a solvent are added to the ground mixture, which results from the mixing and grinding process, the resulting mixture is kneaded and diluted, and a kneaded and diluted mixture is thus obtained. An additive and a solvent are then added to the kneaded and diluted mixture, which results from the kneading and diluting process, a dispersion process is carried out on the resulting mixture, and a dispersion mixture is thereby obtained. Thereafter the dispersion mixture, which results from the dispersion process, is applied to a non-magnetic substrate.

公开(公告)号：US08764877B2

公开(公告)日：2014-07-01

申请号：US13498252

申请日：2010-09-28

申请人： Jin Sato ,  Kouichi Takemoto ,  Takeshi Sasaki ,  Mikio Ohno ,  Junji Ogura

发明人： Jin Sato ,  Kouichi Takemoto ,  Takeshi Sasaki ,  Mikio Ohno ,  Junji Ogura

IPC分类号： B22F9/26 ,  B22F9/22 ,  C22C27/04

CPC分类号： B22F9/22 ,  B22F2201/013 ,  C22C27/04

摘要： Provided is a method for producing a high-purity tungsten powder having a phosphorus content of less than 1 wtppm; wherein an ammonium tungstate solution containing 1 wtppm or more of phosphorus as an impurity in terms of the inclusion in tungsten is used as a starting material, this solution is neutralized with hydrochloric acid at a temperature of 50° C. or less to adjust the pH at 4 or more and less than 7 so as to precipitate ammonium paratungstate undecahydrate crystals, the resulting solution is heated to 70 to 90° C. and filtered in a high-temperature state so as to obtain ammonium paratungstate pentahydrate crystals, the obtained crystals are calcined so as to form a tungsten oxide, and the tungsten oxide is subject to hydrogen reduction so as to obtain a high-purity tungsten powder. Additionally provided is a method for producing a high-purity tungsten powder having a phosphorus content of 0.4 wtppm or less; wherein the ammonium tungstate solution is neutralized with hydrochloric acid to adjust the pH at 4 or more and 6 or less, and this solution is subject to the same procedure as described above so as to obtain a high-purity tungsten powder. Consequently, the phosphorus content can be efficiently reduced.

摘要翻译： 本发明提供磷含量小于1重量ppm的高纯度钨粉的制造方法， 其中以钨含量计含有1重量ppm或更多的磷作为杂质的钨酸钨溶液用作原料，该溶液在50℃或更低的温度下用盐酸中和以调节pH 在4以上且小于7以下，以使仲钨酸铵十一水合物晶体析出，将所得溶液加热至70〜90℃，并在高温状态下过滤，得到仲钨酸铵五水合物晶体，得到的晶体为 煅烧以形成氧化钨，并且将氧化钨进行氢还原以获得高纯度钨粉末。 另外提供了一种磷含量为0.4重量ppm以下的高纯度钨粉的制造方法， 其中钨酸铵溶液用盐酸中和以将pH调节至4以上且6以下，并且将该溶液按照与上述相同的方法进行，以获得高纯度的钨粉末。 因此，可以有效地降低磷含量。

公开(公告)号：US08172946B2

公开(公告)日：2012-05-08

申请号：US11885551

申请日：2006-02-24

申请人： Tomoshi Taniyama ,  Yoshikazu Takashima ,  Mikio Ohno

发明人： Tomoshi Taniyama ,  Yoshikazu Takashima ,  Mikio Ohno

IPC分类号： C23C16/00

CPC分类号： C23C16/4412 ,  H01L21/0217 ,  H01L21/02211 ,  H01L21/02271 ,  H01L21/3185 ,  H01L21/67017 ,  H01L21/67109

摘要： Stagnation of gas used for substrate processing in an exhaust trap is prevented, and localized precipitation of components in the gas used for substrate processing is reduced. The proposed apparatus includes a substrate processing chamber (cylindrical space 250), a gas supply tube 232 for supplying substrate processing gas to the substrate processing chamber, a first exhaust tube (upstream exhaust tube 231a) for discharging gas used for substrate processing from the substrate processing chamber, an exhaust trap 49 for removing components contained in the gas used for substrate processing introduced through the first exhaust tube, and a second exhaust tube (downstream exhaust tube 231b) for exhausting gas out of said exhaust trap 49 after components have been removed from the gas used for substrate processing, wherein the exhaust trap 49 is provided with a cooled baffle plate 59 that is substantially perpendicular to the direction in which gas is introduced into the exhaust trap 49 and that has a concave surface 59a in the side facing the gas introduction port 55a of the exhaust trap 49.

摘要翻译： 防止在排气阱中用于基板处理的气体滞留，并且减少了用于基板处理的气体中的部件的局部沉淀。 所提出的装置包括基板处理室（圆筒空间250），用于向基板处理室供给基板处理气体的气体供给管232，用于从基板排出用于基板处理的气体的第一排气管（上游排气管231a） 处理室，用于除去包含在用于通过第一排气管引入的基板处理的气体中的部件的排气阱49和用于在部件被去除之后将气体从排气阱49排出的第二排气管（下游排气管231b） 来自用于基板处理的气体，其中排气阱49设置有冷却的挡板59，该挡板基本上垂直于气体被引入排气阱49的方向，并且在面向该排气阱的一侧具有凹面59a 排气收集器49的气体导入口55a。

公开(公告)号：US07534508B2

公开(公告)日：2009-05-19

申请号：US11090053

申请日：2005-03-28

申请人： Mikio Ohno

发明人： Mikio Ohno

IPC分类号： G11B5/73 ,  G11B5/735

CPC分类号： G11B5/627 ,  G11B23/107 ,  Y10T428/25

摘要： A leader tape has, on at least one face of a support, a coating layer that contains a powder and a binder, which is characterized in that the center line average roughness (Ra) of at least one face of the leader tape is from 10 to 60 nm, the leader tape is used in a magnetic recording and reproduction device where the line recording density is at least 100 kfci, and the difference between the recording track width and the reproduction track width is from 0 to 16 μm.

摘要翻译： 引导带在支撑体的至少一个面上具有包含粉末和粘合剂的涂层，其特征在于，引带的至少一个面的中心线平均粗糙度（Ra）为10 在磁记录和再现装置中使用领先带，线记录密度至少为100kfci，记录磁道宽度和再现磁道宽度之差为0至16μm。

公开(公告)号：US07381485B2

公开(公告)日：2008-06-03

申请号：US11049891

申请日：2005-02-04

申请人： Tatsuo Ishikawa ,  Mikio Ohno ,  Tomohiro Ichikawa

发明人： Tatsuo Ishikawa ,  Mikio Ohno ,  Tomohiro Ichikawa

IPC分类号： B32B5/04 ,  B32B5/716

CPC分类号： G11B5/70 ,  G11B5/7305 ,  G11B5/735 ,  Y10T428/31794

摘要： A magnetic recording tape comprising a nonmagnetic support and a magnetic layer containing ferromagnetic powder and a binder, wherein the nonmagnetic support has an intrinsic viscosity of from 0.40 to 0.60 dl/g and a number average molecular weight of from 12,000 to 24,000, and a distance between an apex of a maximum convexity and a valley of a maximum concavity of the nonmagnetic support on a cross section of an edge of the tape made by cutting the tape in a transverse direction is 2 μm or less in the transverse direction.

摘要翻译： 一种磁记录带，其包含非磁性载体和含有铁磁性粉末和粘合剂的磁性层，其中所述非磁性载体的特性粘度为0.40至0.60dl / g，数均分子量为12,000至24,000， 在通过沿横向方向切割带而制成的带的边缘的横截面上的非磁性载体的最大凹凸的顶点与最大凹部的谷之间的宽度在横向上为2μm或更小。

公开(公告)号：US20080017741A1

公开(公告)日：2008-01-24

申请号：US11578409

申请日：2004-04-13

申请人： Tomohiro Ichikawa ,  Mikio Ohno ,  Kiyomi Ejiri

发明人： Tomohiro Ichikawa ,  Mikio Ohno ,  Kiyomi Ejiri

IPC分类号： G11B23/107

CPC分类号： G11B23/107 ,  G11B5/627 ,  G11B23/037 ,  G11B23/26

摘要： An object is to provide a leader tape which suppresses the increase of dropout resulting from imprinting of the drive reel or leader block part due to storage for a long time or running at a high temperature and hardly causes the edge damage of a magnetic tape, and also provide a magnetic tape cartridge using the leader tape. 1) A leader tape LT including a support having provided on at least one surface thereof a coating layer, wherein Ra on at least one surface of the leader tape is from 10 to 60 nm and the maximum curving amount in the longitudinal direction is 3 mm/m or less; and 2) a magnetic tape cartridge including a cartridge case; and a single reel or a plurality of reels, each reel being rotatably housed in the cartridge case and having a magnetic tape wound therearound, in which the magnetic tape has a leader tape of 1), the leader tape being jointed to an leading end of the magnetic tape and drawn out into a magnetic recording and reproducing apparatus while leading the magnetic tape.

摘要翻译： 目的在于提供一种引导带，其能够抑制由于长时间存储或高温运转而导致的驱动卷轴或引导块部件的压印引起的压差增加，并且几乎不引起磁带的边缘损坏， 还提供使用引导带的磁带盒。 1）一种引导带LT，其包括在其至少一个表面上设置有涂层的支撑体，其中，引导带的至少一个表面上的Ra为10〜60nm，纵向的最大弯曲量为3mm / m以下; 和2）包括盒壳体的磁带盒; 以及单个卷轴或多个卷轴，每个卷轴可旋转地容纳在盒壳体中并且具有卷绕在其上的磁带，其中磁带具有引导带1），引导带连接到 磁带并在引导磁带的同时被引出到磁记录和再现装置中。

公开(公告)号：US20050253010A1

公开(公告)日：2005-11-17

申请号：US11090069

申请日：2005-03-28

申请人： Masatoshi Takahashi ,  Mikio Ohno

发明人： Masatoshi Takahashi ,  Mikio Ohno

IPC分类号： G11B5/627 ,  G11B5/70 ,  G11B5/73 ,  G11B5/735 ,  G11B23/107 ,  G11B23/26

CPC分类号： G11B23/107 ,  G11B23/26

摘要： A leader tape in which an non-magnetic under layer that contains a powder and a binder and a magnetic upper layer are sequentially laminated on at least one side of a support, a center line average roughness (Ra) of a surface of the support is from 30 to 50 nm, and a center line average roughness (Ra) of the multi layer coated surface is larger than that (Ra) of an opposite surface of the support, and the difference is at most 4 nm.

摘要翻译： 其中包含粉末和粘合剂的非磁性底层和磁性上层的引导带依次层压在支撑体的至少一侧上，支撑体表面的中心线平均粗糙度（Ra）为 30〜50nm，多层被覆面的中心线平均粗糙度（Ra）大于载体的相反面的（Ra），差为4nm以下。

公开(公告)号：US20050214525A1

公开(公告)日：2005-09-29

申请号：US11090068

申请日：2005-03-28

申请人： Mikio Ohno

发明人： Mikio Ohno

IPC分类号： B32B5/16 ,  G11B5/627 ,  G11B23/107 ,  G11B23/26

CPC分类号： G11B5/627 ,  G11B23/107 ,  G11B23/26 ,  Y10T428/254

摘要： A leader tape has, on at least one face of a support, a coating layer that contains a powder and a binder, which is characterized in that a center line average roughness (Ra) of at least one face of the leader tape is from 10 to 60 nm, and the leader tape is used for binding to a magnetic tape having a thickness of 3 to 11 μm.

摘要翻译： 引导带在支撑体的至少一个面上具有包含粉末和粘合剂的涂层，其特征在于，引带带的至少一个面的中心线平均粗糙度（Ra）为10 并将引导带用于结合厚度为3至11μm的磁带。

公开(公告)号：US20050211814A1

公开(公告)日：2005-09-29

申请号：US11090058

申请日：2005-03-28

申请人： Masatoshi Takahashi ,  Mikio Ohno

发明人： Masatoshi Takahashi ,  Mikio Ohno

IPC分类号： G11B5/627 ,  B32B5/16 ,  G11B5/70 ,  G11B5/73 ,  G11B5/735 ,  G11B23/107 ,  G11B23/26

CPC分类号： G11B23/107 ,  G11B23/26 ,  Y10T428/254

摘要： A leader tape where an non-magnetic under layer that contains a powder and a binder and a magnetic upper layer are sequentially laminated on at least one face of a support, in which F5 values of the support in a machine direction (MD) and in a transverse direction (TD) are from 80 to 120 MPa respectively, the F5 value in MD is larger than that in TD, and a difference between the F5 value in MD and that in TD is 15 MPa or less.

摘要翻译： 引导带，其中含有粉末和粘合剂的非磁性底层和磁性上层依次层压在载体的至少一个面上，其中载体的机械方向（MD）的F5值和 横向（TD）分别为80〜120MPa，MD的F5值比TD大，MD值与TD的F5值之差为15MPa以下。

公开(公告)号：US06653001B2

公开(公告)日：2003-11-25

申请号：US10016618

申请日：2001-10-26

申请人： Naoto Murao ,  Mikio Ohno ,  Nobuyoshi Asada ,  Youichi Hayata

发明人： Naoto Murao ,  Mikio Ohno ,  Nobuyoshi Asada ,  Youichi Hayata

IPC分类号： B32B516

CPC分类号： G11B5/70678 ,  G11B5/70 ,  G11B5/78 ,  Y10S428/90 ,  Y10T428/257 ,  Y10T428/265 ,  Y10T428/8305

摘要： Provided is a thin magnetic tape with good tracking and very little output variation in VTRs. The magnetic tape comprises a flexible support, a magnetic layer provided on one side of said flexible support and a backcoat layer provided on the reverse side of said flexible support. The magnetic tape has a stiffness equal to or less than 70 mg·mm2 in the width direction, an average meandering amount of a tape edge trajectory traced by each of both end in the width direction of said tape observed from the direction perpendicular to said magnetic layer surface is equal to or less than 15 &mgr;m in every end, and an intensity of a meandering component having a cycle of 20 to 200 mm is equal to or less than 30 percent of the intensity of a meandering component having a cycle of 20 to 10,000 mm.

摘要翻译： 提供了一种具有良好跟踪和非常小的VTR输出变化的薄磁带。 磁带包括柔性支撑件，设置在所述柔性支撑件的一侧上的磁性层和设置在所述柔性支撑件的相反侧上的背涂层。 该磁带在宽度方向上具有等于或小于70mg.mm <2的刚度，从垂直方向观察到的所述带的宽度方向上的两端中的每一端跟踪的带边缘轨迹的平均曲折量 所述磁性层表面在每一端等于或小于15μm，并且具有20至200mm的循环的曲折部件的强度等于或小于具有循环的曲折部件的强度的30％ 为20至10,000毫米。