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22 条记录 (耗时 0.019 秒)

    Amorphous alloys
    3.
    发明授权
    Amorphous alloys 失效
    无定形合金

    公开(公告)号：US4668310A

    公开(公告)日：1987-05-26

    申请号：US474886

    申请日：1983-03-14

    申请人： Mitsuhiro Kudo ,  Shinji Takayama ,  Yoshizo Sawada ,  Yasunobu Ogata

    发明人： Mitsuhiro Kudo ,  Shinji Takayama ,  Yoshizo Sawada ,  Yasunobu Ogata

    IPC分类号： C22C19/00 ,  C22C19/03 ,  C22C19/05 ,  C22C19/07 ,  C22C38/00 ,  C22C45/00 ,  H01F1/153 ,  H01F1/04

    CPC分类号： H01F1/153 ,  C22C45/008

    摘要： Amorphous alloys having high strength, high hardness, high crystallization temperature, high saturation magnetic induction, low coercive force, high magnetic permeability and particularly low deterioration of magnetic properties with lapse of time, have a composition formula ofT.sub.a X.sub.b Z.sub.c or T.sub.a' X.sub.b' Z.sub.c' M.sub.d,whereinT is at least one of Fe, Co and Ni,X is at least one of Zr, Ti, Hf and Y,Z is at least one of B, C, Si, Al, Ge, Bi, S and P,a is 70-98 atomic %,b is not more than 30 atomic %,c is not more than 15 atomic %,sum of a, b and c is 100 atomic %,M is at least one Mo, Cr, W, V, Nb, Ta, Cu, Mn, Zn, Sb, Sn, Be, Mg, Pd, Pt, Ru, Os, Rh, Ir, Ce, La, Pr, Nd, Sm, Eu, Gd, Tb and Dy,a' is 70-98 atomic %,b' is not more than 30 atomic %,c' is not more than 15 atomic %,d is not more than 20 atomic %, andsum of a', b', c' and d is 100 atomic %.

    摘要翻译： 具有高强度，高硬度，高结晶温度，高饱和磁感应，低矫顽力，高导磁率和特别是低磁通性随时间劣化的非晶合金具有TaXbZc或Ta'Xb'Zc'的组成式， Md，其中T是Fe，Co和Ni中的至少一种，X是Zr，Ti，Hf和Y中的至少一种，Z是B，C，Si，Al，Ge，Bi，S和P中的至少一种 a为70-98原子％，b为30原子％以下，c为15原子％以下，a，b和c的和为100原子％，M为至少Mo，Cr，W， V，Nb，Ta，Cu，Mn，Zn，Sb，Sn，Be，Mg，Pd，Pt，Ru，Os，Rh，Ir，Ce，La，Pr，Nd，Sm，Eu，Gd，Tb和Dy， a'是70-98原子％，b'不大于30原子％，c'不大于15原子％，d不大于20原子％，a'，b'，c'和 d为100原子％。

    Composite type magnetic head for recording and reproducing high frequency signals
    4.
    发明授权
    Composite type magnetic head for recording and reproducing high frequency signals 失效
    用于记录和再现高频信号的复合型磁头

    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。

    Magnetic head and method of fabricating same
    5.
    发明授权
    Magnetic head and method of fabricating same 失效
    磁头及其制造方法

    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。

    Magnetic head having an integrated recording and playback head and an erasure head
    8.
    发明授权
    Magnetic head having an integrated recording and playback head and an erasure head 失效
    具有集成的记录和回放头和擦除头的磁头

    公开(公告)号：US4774616A

    公开(公告)日：1988-09-27

    申请号：US694386

    申请日：1984-12-04

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

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

    IPC分类号： G11B5/31 ,  G11B5/265 ,  G11B5/16 ,  G11B5/22

    CPC分类号： G11B5/2651 ,  G11B5/2655

    摘要： The present invention relates to a magnetic head, which can form guard bands on a magnetic recording medium and which is especially suitable for magnetic discs, and a fabrication process thereof. The magnetic core of the present invention includes a recording and reproduction head core (31) and an erasure head core (32) which is integrally joined in series to the head core (31) for forming guard bands. Magnetic circuits are constructed of metallic magnetic materials (34), (34'), (35) and (35') formed on non-magnetic members (33) and (33'). As a result, a recording medium having high coercive forces can be recorded while the track width is reduced and the fabrication is facilitated with a high accuracy.

    摘要翻译： PCT No.PCT / JP84 / 00159 Sec。 371日期1984年12月4日第 102（e）日期1984年12月4日PCT提交1984年4月2日PCT公布。 公开号WO84 / 03984 日期：1984年10月11日。磁头技术领域本发明涉及一种能够在磁记录介质上形成保护带并且特别适用于磁盘的磁头及其制造方法。 本发明的磁芯包括记录和再现头芯（31）和擦除头芯（32），它与头芯（31）串联成一体，用于形成防护带。 磁路由形成在非磁性构件（33）和（33'）上的金属磁性材料（34），（34'），（35）和（35'）构成。 结果，可以记录具有高矫顽力的记录介质，同时减小轨道宽度并且以高精度促进制造。

    Magnetic recording and reproducing system with composite magnetic head
    9.
    发明授权
    Magnetic recording and reproducing system with composite magnetic head 失效
    具有复合磁头的磁记录和再现系统

    公开(公告)号：US4731683A

    公开(公告)日：1988-03-15

    申请号：US724688

    申请日：1985-04-19

    申请人： Shigekazu Otomo ,  Noriyuki Kumasaka ,  Takeo Yamashita ,  Juichi Morikawa ,  Takayuki Kobayashi ,  Mitsuhiro Kudo

    发明人： Shigekazu Otomo ,  Noriyuki Kumasaka ,  Takeo Yamashita ,  Juichi Morikawa ,  Takayuki Kobayashi ,  Mitsuhiro Kudo

    IPC分类号： G11B5/02 ,  G11B5/127 ,  G11B5/187 ,  G11B5/133

    CPC分类号： G11B5/1875 ,  G11B5/1274

    摘要： The invention discloses a magnetic recording and reproducing system using a composite magnetic head whose surface facing a magnetic recording medium is composed primarily of a ferromagnetic metal and a high permeability ferrite single crystal, and which has a region close to a gap and composed of the ferromagnetic metal, wherein the composite magnetic head is arranged in such a fashion that the {110} plane of the high permeability ferrite single crystal is made to substantially coincide with a plane forming a principal magnetic circuit of the composite magnetic head, that the direction lying inside the {110} plane is inclined at an angle of from 15.degree. to 75.degree. with respect to a direction perpendicular to the surface facing the magnetic recording medium, and that the magnetic recording medium travels in a direction which is relatively the same as, and parallel to, a vector formed by projecting a vector extending from the inside to the outside of the surface facing the magnetic recording medium in the direction, on the surface facing the magnetic recording medium. This magnetic recording and reproducing system can remarkably reduce the step occurring on the surface facing the magnetic recording medium due to wear caused by the travel of the recording medium, and can reduce any output deterioration and fluctuation resulting from the step.

    摘要翻译： 本发明公开了一种使用复合磁头的磁记录和再现系统，其表面面向磁记录介质主要由铁磁金属和高磁导率铁氧体单晶组成，并且具有接近间隙的区域并由铁磁性 金属，其中复合磁头布置成使得高磁导率铁氧体单晶的{110}面与形成复合磁头的主磁路的平面基本一致，<100> 位于{110}平面内的方向相对于与面向磁记录介质的表面垂直的方向以15°至75°的角度倾斜，并且磁记录介质沿相同方向行进 作为并平行于通过投影从面向磁性r的表面的内部向外部延伸的矢量形成的矢量 在<100>方向的记录介质上，在面向磁记录介质的表面上。 这种磁记录和再现系统可以显着地减少由于记录介质的行进造成的磨损而在面对磁记录介质的表面上发生的台阶，并且可以减少由于该步骤导致的任何输出劣化和波动。