公开(公告)号：US5057955A

公开(公告)日：1991-10-15

申请号：US419104

申请日：1989-10-10

申请人： Osamu Inagoya ,  Takeshi Tottori ,  Kazunari Nakagawa ,  Hirosuke Mikami ,  Hideo Fujiwara

发明人： Osamu Inagoya ,  Takeshi Tottori ,  Kazunari Nakagawa ,  Hirosuke Mikami ,  Hideo Fujiwara

IPC分类号： G11B5/193 ,  G11B5/265

CPC分类号： G11B5/2655 ,  G11B5/193

摘要： A composite magnetic head having a recording/playback head and an erasing head combined in one unit through a nonmagnetic material is constructed such that at least one of two core halves constituting the erasing head adjacent to the recording and reproducing head is made of single crystal ferrite, a plane (100) of the single crystal ferrite is substantially parallel to a principal magnetic path-forming plane, and an angle .theta. between an orientation existing in the plane (100) and an operating gap (magnetic gap)-forming plane is in the range of 10.degree.-40.degree. or 80.degree.-120.degree.. The composite magnetic head thus constructed can be made to have a reduced distance between magnetic gaps of both heads so as to be suited for being attached to the compact high-density recording and reproducing apparatus while eliminating crosstalk.

摘要翻译： 具有通过非磁性材料组合在一个单元中的记录/重放头和擦除头的复合磁头被构造成使得构成与记录和再现头相邻的擦除头的两个半核中的至少一个由单晶铁氧体 ，单晶铁氧体的平面（100）基本上平行于主磁路形成平面，并且存在于平面（100）中的取向<100>与形成操作间隙（磁隙）的角度θ 平面在10°-40°或80°-120°的范围内。 这样构成的复合磁头可以使两个磁头的磁隙之间的距离减小，从而适于附着到紧凑的高密度记录和再现装置上，同时消除串扰。

公开(公告)号：US4895758A

公开(公告)日：1990-01-23

申请号：US777017

申请日：1985-09-17

申请人： Akito Sakemoto ,  Hideo Fujiwara ,  Kunio Mizushima ,  Akira Miyake

发明人： Akito Sakemoto ,  Hideo Fujiwara ,  Kunio Mizushima ,  Akira Miyake

IPC分类号： G11B5/012 ,  G11B5/127 ,  G11B5/70 ,  G11B5/706 ,  G11B5/714

CPC分类号： G11B5/70673 ,  G11B5/012 ,  G11B5/1276 ,  G11B5/70 ,  G11B5/70615 ,  G11B5/714 ,  Y10S428/90 ,  Y10T428/25 ,  Y10T428/265

摘要： A magnetic recording medium suitable for high density recording comprising a non-magnetic substrate and a magnetic layer which contains a non-magnetic binder and ferromagnetic powder dispersed therein formed on said substrate, the coercive force of the magnetic layer being from 1,400 to 2,000 oersteds, the residual magnetic flux density being at least 1,100 gausses and a thickness of the layer being at least 0.5 .mu.m, which effectively works when it is used together with a magnetic head, a part of which near a magnetic gap, made of a magnetic material having saturation magnetic flux density of at least 7,000 gausses and which has a magnetic gap length of 0.15 to 0.4 .mu.m.

摘要翻译： 一种适用于高密度记录的磁记录介质，包括非磁性基底和磁性层，该磁性层含有分散于其中的非磁性粘结剂和铁磁粉末，所述磁性层的矫顽力为1400至2,000奥斯特， 剩余磁通密度至少为1100高斯，该层的厚度为至少0.5μm，当与磁头一起使用的磁头（磁性部分靠近磁隙）与磁性材料一起使用时，其有效地起作用 具有至少7,000高斯的饱和磁通密度，其磁隙长度为0.15至0.4μm。

公开(公告)号：US4828919A

公开(公告)日：1989-05-09

申请号：US79527

申请日：1987-07-30

申请人： Osamu Kitakami ,  Hideo Fujiwara ,  Tsuyoshi Maro

发明人： Osamu Kitakami ,  Hideo Fujiwara ,  Tsuyoshi Maro

IPC分类号： C09D5/23 ,  G11B5/64 ,  G11B5/65 ,  G11B5/66 ,  G11B5/667 ,  G11B5/702 ,  G11B5/708 ,  G11B5/716 ,  G11B5/73 ,  G11B5/738 ,  G11B5/85

CPC分类号： G11B5/85 ,  G11B5/66 ,  G11B5/702 ,  G11B5/716 ,  Y10S428/90 ,  Y10T428/265

摘要： A magnetic recording medium comprising a non-magnetic substrate, a soft magnetic layer formed thereon, and a perpendicularly magnetizable layer formed on the soft magnetic layer, where at least the soft magnetic layer is a vapor deposited mixture layer composed of an organic material and a ferromagnetic material, has distinguished flexibility and durability.

摘要翻译： 一种磁记录介质，包括非磁性基板，形成在其上的软磁性层和形成在软磁层上的可垂直磁化层，至少软磁性层是由有机材料和 铁磁材料，具有突出的灵活性和耐久性。

公开(公告)号：US4656547A

公开(公告)日：1987-04-07

申请号：US608407

申请日：1984-05-09

申请人： Noriyuki Kumasaka ,  Hideo Fujiwara ,  Shigekazu Otomo ,  Takeo Yamashita ,  Shinji Takayama ,  Noritoshi Saito ,  Mitsuhiro Kudo

发明人： Noriyuki Kumasaka ,  Hideo Fujiwara ,  Shigekazu Otomo ,  Takeo Yamashita ,  Shinji Takayama ,  Noritoshi Saito ,  Mitsuhiro Kudo

IPC分类号： G11B5/127 ,  G11B5/187 ,  G11B5/23 ,  G11B5/245 ,  G11B5/147 ,  G11B5/17

CPC分类号： G11B5/1874

摘要： There is provided a structure of a composite type magnetic head and its manufacturing method. The composite type magnetic head comprises: two high permeability ferrite blocks with projections having nearly edged sections formed thereon; magnetic films having a high saturation flux density deposited on the side faces of the projections, the magnetic films confronting each other via a functional gap near front ends of said projections; guard films deposited over the magnetic films comprising a non-magnetic material; and non-magnetic materials filled on the guard films up to side face of the coil. This magnetic head exhibits excellent recording and reproducing characteristics. The contour effect is negligibly small. The reaction between the magnetic film and the non-magnetic material is prevented by the guard film.

摘要翻译： 提供复合型磁头的结构及其制造方法。 复合型磁头包括：两个高磁导率铁氧体块，其上形成有几乎边缘的突起; 沉积在突起的侧面上的具有高饱和磁通密度的磁性膜通过在所述突起的前端附近的功能间隙相互面对; 保护膜沉积在包含非磁性材料的磁性膜上; 以及填充在保护膜上的非磁性材料直到线圈的侧面。 该磁头具有出色的记录和再现特性。 轮廓效应可忽略不计。 保护膜可防止磁性膜与非磁性材料之间的反应。

公开(公告)号：US4559572A

公开(公告)日：1985-12-17

申请号：US575704

申请日：1984-01-31

申请人： Noriyuki Kumasaka ,  Hideo Fujiwara ,  Shigekazu Otomo ,  Takeo Yamashita ,  Shinji Takayama ,  Noritoshi Saito ,  Nobuo Kobayashi ,  Mitsuhiro Kudo

发明人： Noriyuki Kumasaka ,  Hideo Fujiwara ,  Shigekazu Otomo ,  Takeo Yamashita ,  Shinji Takayama ,  Noritoshi Saito ,  Nobuo Kobayashi ,  Mitsuhiro Kudo

IPC分类号： G11B5/127 ,  G11B5/147 ,  G11B5/23 ,  G11B5/31 ,  G11B5/12

CPC分类号： G11B5/147 ,  G11B5/3106

摘要： A magnetic head core and a method of fabricating same, wherein a magnetic circuit is constituted by a pair of magnetic films having a V-shaped cross section which face each other at each protrudent section through the gap material. The cross-sectional portion of the V-shaped film is exposed to the surface facing the magnetic recording medium. The protrusions of the magnetic film pair have tip planes parallel to each other and substantially perpendicular to the moving direction of the magnetic recording medium. The tip plane has a width defined by the line of intersection between the plane and the surface facing the magnetic recording medium in correspondence to the recording track width. At least one of the magnetic films has a window for winding an excitation coil. The magnetic film is formed on the non-magnetic protection member having a V-shaped protrusion. The magnetic head has superior recording and reproducing characteristics in a wide frequency band with less rubbing noise, high wear-resistivity and high productivity, and operates without the pseudo gap effect. The magnetic head core is fabricated through the steps of forming a coil winding groove in the gap forming plane of a non-magnetic core block, forming a number of parallel grooves perpendicularly to the winding groove so that a number of V-shaped protrusions are produced, forming a magnetic film on the surface of the protrusions, forming a gap plane after the magnetic film has been coated with non-magnetic material, and splitting the block and then combining the two core blocks to complete a magnetic head core.

摘要翻译： 一种磁头芯及其制造方法，其中磁路由通过间隙材料的每个突出部分彼此面对的具有V形横截面的一对磁膜构成。 V形膜的横截面部分暴露于面向磁记录介质的表面。 磁性膜对的突起具有彼此平行的并且基本上垂直于磁记录介质的移动方向的尖端平面。 尖端平面具有与记录轨道宽度相对应的平面与面向磁记录介质的表面之间的交点线限定的宽度。 至少一个磁性膜具有用于缠绕励磁线圈的窗口。 磁性膜形成在具有V形突起的非磁性保护构件上。 磁头在宽频带具有优异的记录和再现特性，具有较少的摩擦噪声，高耐磨性和高生产率，并且没有伪间隙效应。 通过在非磁性芯块的间隙形成平面中形成线圈绕槽的步骤制造磁头芯，与绕组槽垂直地形成多个平行的沟槽，从而产生多个V形突起 在突起的表面上形成磁性膜，在磁性膜被非磁性材料涂覆之后形成间隙平面，分割该块，然后组合两个核心块，从而形成磁头芯。

公开(公告)号：US4013911A

公开(公告)日：1977-03-22

申请号：US516806

申请日：1974-10-21

申请人： Hideo Fujiwara ,  Yukio Ichinose ,  Kenji Kato

发明人： Hideo Fujiwara ,  Yukio Ichinose ,  Kenji Kato

IPC分类号： H01F29/10 ,  H02P13/10

CPC分类号： H01F29/10

摘要： A displacement - electricity transducer contains a movable magnetic core and a fixed magnetic core oppositely arranged so as to have predetermined gaps or clearances in at least two places. Two substantially closed magnetic circuits, each including one of the gaps, are formed by both magnetic cores, so that when the movable magnetic core is displaced relative to the fixed magnetic core while maintaining a predetermined spacing therefrom, the substantially opposite area of the gap portion in one of the magnetic circuits increases, while the substantially opposite area of the gap portion in the other magnetic circuit decreases. A first coil is wound around a part common to the two magnetic circuits, while a second coil is wound around a part not common thereto. By applying an alternating current to the first coil, an output responsive to the displacement of the movable magnetic core is derived from the second coil.

公开(公告)号：US08764521B2

公开(公告)日：2014-07-01

申请号：US13380087

申请日：2010-07-01

申请人： Kazushi Sogawa ,  Hideo Fujiwara ,  Kazuya Kodama ,  Jin Fukumitsu

发明人： Kazushi Sogawa ,  Hideo Fujiwara ,  Kazuya Kodama ,  Jin Fukumitsu

IPC分类号： B24B33/08

CPC分类号： B24B33/08

摘要： A plurality of grind-stone-mounts 12 each having a grind stone 15 on its outer side are attached to a holder 11 of a honing head 10 expandably along a radial direction. Each of the grind-stone-mounts 12 is provided with a support part 13 disposed inside along the radial direction, and a grind part 14 including the grind stone 15 and disposed outside along the radial direction. The grind part 14 is swingably attached to the support part 13 through one or more spring members 16 disposed at intervals along an axial direction of the holder 11.

摘要翻译： 在其外侧具有研磨石15的多个磨石架12沿着径向方向可膨胀地安装在珩磨头10的保持架11上。 每个磨石安装座12设置有沿着径向设置在内侧的支撑部13和包括研磨石15并沿着径向设置在外侧的研磨部14。 研磨部14通过沿保持器11的轴向间隔设置的一个或多个弹簧构件16可摆动地附接到支撑部13。

公开(公告)号：US07735892B2

公开(公告)日：2010-06-15

申请号：US12032493

申请日：2008-02-15

申请人： Junichi Sakamoto ,  Sadamichi Enjo ,  Hideo Fujiwara

发明人： Junichi Sakamoto ,  Sadamichi Enjo ,  Hideo Fujiwara

IPC分类号： B62H5/00

CPC分类号： B62H5/00 ,  B62K19/40 ,  B62K2202/00 ,  G07C9/00182 ,  G07C2009/00793

摘要： A vehicle front portion structure having a storage portion for facilitating maintenance for a vehicle front portion includes a first storage portion that includes a bottom portion extending in the longitudinal direction of a vehicle body, left and right walls extending upwardly from the bottom portion, a ceiling portion connecting the left and right walls and a back wall closing the respective backs of the bottom portion, left and right walls and ceiling portion. The first storage portion is provided with a maintenance opening formed to be spanned among the back wall, a left wall continuous with the back wall and the bottom portion continuous with the back wall, and with the lid body which covers the maintenance opening in an attachable and detachable manner. A key cylinder arrangement structure for a vehicle is provided that can significantly enhance operability of a key cylinder while preventing tampering or theft.

摘要翻译： 一种具有便于车辆前部保养的收纳部的车辆前部结构，包括：第一收纳部，其具有沿车体长度方向延伸的底部;从所述底部向上延伸的左右壁; 连接左壁和右壁的部分和封闭底部，左壁和右壁和顶部的相应后部的后壁。 第一存储部分设置有维护开口，其形成为跨越后壁，与后壁连续的左壁和与后壁连续的底部，以及具有可附接的维护开口的盖体 并可拆卸。 提供一种用于车辆的钥匙筒布置结构，其可以显着提高钥匙筒的可操作性，同时防止篡改或盗窃。

公开(公告)号：US07569902B2

公开(公告)日：2009-08-04

申请号：US11589676

申请日：2006-10-30

申请人： Hideo Fujiwara ,  Sheng-Yuan Wang

发明人： Hideo Fujiwara ,  Sheng-Yuan Wang

IPC分类号： G11C11/02 ,  H01L29/82

CPC分类号： G11C11/16

摘要： A toggle-MRAM device is disclosed that uses an SAF composite and lowers the operating field substantially with a wide operating field margin and high thermal stability using specific magnetic parameters. Consequently, this device enhances the performance of MRAM's, especially in its large operating field margin and high thermal stability characteristics with a low current.

摘要翻译： 公开了一种切换MRAM装置，其使用SAF复合材料，并且使用特定磁参数基本上具有宽的操作场裕度和高热稳定性来降低操作场。 因此，该器件增强了MRAM的性能，特别是在其较大的工作范围和较低的电流下的高热稳定特性。

公开(公告)号：US20070097742A1

公开(公告)日：2007-05-03

申请号：US11589676

申请日：2006-10-30

申请人： Hideo Fujiwara ,  Sheng-Yuan Wang

发明人： Hideo Fujiwara ,  Sheng-Yuan Wang

IPC分类号： G11C11/14

CPC分类号： G11C11/16

摘要： A toggle-MRAM device is disclosed that uses an SAF composite and lowers the operating field substantially with a wide operating field margin and high thermal stability using specific magnetic parameters. Consequently, this device enhances the performance of MRAM's, especially in its large operating field margin and high thermal stability characteristics with a low current.

摘要翻译： 公开了一种切换MRAM装置，其使用SAF复合材料，并且使用特定磁参数基本上具有宽的操作场裕度和高热稳定性来降低操作场。 因此，该器件增强了MRAM的性能，特别是在其较大的工作范围和较低的电流下的高热稳定特性。