公开(公告)号：US6111723A

公开(公告)日：2000-08-29

申请号：US84321

申请日：1998-05-26

Applicant: Hisashi Takano ,  Naoki Koyama ,  Hideo Tanabe ,  Eijin Moriwaki ,  Isamu Yuito ,  Kazuo Shiiki ,  Tsuyoshi Ohnishi ,  Tohru Ishitani ,  Toshio Kobayashi ,  Hideo Todokoro ,  Chiaki Ishikawa

Inventor： Hisashi Takano ,  Naoki Koyama ,  Hideo Tanabe ,  Eijin Moriwaki ,  Isamu Yuito ,  Kazuo Shiiki ,  Tsuyoshi Ohnishi ,  Tohru Ishitani ,  Toshio Kobayashi ,  Hideo Todokoro ,  Chiaki Ishikawa

IPC: G11B5/11 ,  G11B5/127 ,  G11B5/187 ,  G11B5/31 ,  G11B5/39

CPC classification number: G11B5/3903 ,  G11B5/1278 ,  G11B5/1871 ,  G11B5/3103 ,  G11B5/3106 ,  G11B5/3116 ,  G11B5/3143 ,  G11B5/3163 ,  G11B5/3967 ,  G11B5/112

Abstract: In a composite magnetic head comprising a magnetoresistive read head including a magnetic thin film having a magnetoresistive effect and soft magnetic members interposing the soft magnetic film between them through a non-magnetic insulation layer, an induction type write head including poles formed in a moving direction of a medium and a conductor crossing the poles, and disposed in the proximity of the magnetoresistive head, and a substrate supporting these heads, the present invention discloses a composite magnetic head characterized in that part of a floating surface inclusive of the magnetic head constituent members has recesses and the read/write operations to and from the medium are effected by the portion interposed by these recesses.

Abstract translation: 在包括具有磁阻效应的磁性薄膜的磁阻读头的复合磁头和通过非磁性绝缘层将它们插入在它们之间的软磁性部件的感应型写头，包括在移动方向上形成的磁极 的介质和导体，并且设置在磁阻头附近以及支撑这些磁头的基板上，本发明公开了一种复合磁头，其特征在于，包括磁头构成部件的浮动面的一部分 具有凹槽，并且来自介质的读/写操作由这些凹槽插入的部分实现。

公开(公告)号：US5897969A

公开(公告)日：1999-04-27

申请号：US975332

申请日：1997-11-20

Applicant: Akira Taniyama ,  Makoto Morijiri ,  Haruko Tanaka ,  Isamu Yuito ,  Eiji Ashida ,  Hiroaki Koyanagi ,  Hideo Tanabe ,  Tetsuo Kobayashi

Inventor： Akira Taniyama ,  Makoto Morijiri ,  Haruko Tanaka ,  Isamu Yuito ,  Eiji Ashida ,  Hiroaki Koyanagi ,  Hideo Tanabe ,  Tetsuo Kobayashi

IPC: G11B5/31 ,  G11B5/39 ,  B32B9/00

CPC classification number: G11B5/3906 ,  G11B5/3163 ,  G11B5/3903 ,  G11B5/3932

Abstract: A magnetic domain controlling film for controlling the magnetic domain of a magnetoresistive film is formed by the patterning technique on a lower insulating film formed on a lower shield film. The magnetoresistive film is formed on the magnetic domain controlling film for converting a magnetic signal from a magnetic recording medium into an electrical signal using the magnetoresistive effect. A resist pattern is formed by the lift-off method on the magnetoresistive film in such a fashion as to leave a region of the magnetoresistive film corresponding to the tracks of the magnetic recording medium. A magnetoresistive element is formed by ion milling leaving only the portion of the magnetoresistive film corresponding to the tracks.

Abstract translation: 通过在下屏蔽膜上形成的下绝缘膜上的图案化技术形成用于控制磁阻膜的磁畴的磁畴控制膜。 磁阻膜形成在磁畴控制膜上，用于使用磁阻效应将来自磁记录介质的磁信号转换成电信号。 通过剥离方法在磁阻膜上形成抗蚀剂图案，以便留下与磁记录介质的轨道相对应的磁阻膜的区域。 通过离子铣削形成磁阻元件，仅留下对应于轨道的磁阻膜的部分。

公开(公告)号：US5371643A

公开(公告)日：1994-12-06

申请号：US927955

申请日：1992-08-11

Applicant: Isamu Yuito ,  Makoto Morijiri ,  Tooru Takeura ,  Katsunori Ohwada ,  Masahiro Kitada

Inventor： Isamu Yuito ,  Makoto Morijiri ,  Tooru Takeura ,  Katsunori Ohwada ,  Masahiro Kitada

IPC: G11B5/39 ,  G11B5/33

CPC classification number: G11B5/3903 ,  Y10T29/49052

Abstract: A magnetoresistive head is fabricated with a high yield rate by preventing the electrode film from breaking down. An upper shield film is formed with an electrode separation layer and an upper gap film disposed between it and the electrode film. The electrode film is prevented from being etched when the upper shield film is subjected to ion milling as a result. Further, the upper gap film is laid on top of the electrode separation layer, and a lead is satisfactorily protected and prevented from being exposed. Thus, the upper shield film and the lead are prevented from becoming short-circuited as a result of the disconnection of the electrode film and the exposure of the lead.

Abstract translation: 通过防止电极膜破裂，以高产率制造磁阻头。 上部屏蔽膜形成有电极分离层和设置在其与电极膜之间的上间隙膜。 因此，当上屏蔽膜经受离子铣削时，防止电极膜被蚀刻。 此外，上间隙膜被放置在电极分离层的顶部，并且引线被令人满意地保护并防止暴露。 因此，由于电极膜的断开和引线的暴露，防止了上屏蔽膜和引线的短路。

公开(公告)号：US20060152862A1

公开(公告)日：2006-07-13

申请号：US11371244

申请日：2006-03-09

Applicant: Ryoichi Nakatani ,  Masahiro Kitada ,  Naoki Koyama ,  Isamu Yuito ,  Hisashi Takano ,  Eijin Moriwaki ,  Mikio Suzuki ,  Masaaki Futamoto ,  Fumio Kugiya ,  Yoshibumi Matsuda ,  Kazuo Shiiki ,  Yoshinori Miyamura ,  Kyo Akagi ,  Takeshi Nakao ,  Hirotsugu Fukuoka ,  Takayuki Munemoto ,  Tokuho Takagaki ,  Toshio Kobayashi ,  Hideo Tanabe ,  Noboru Shimizu

Inventor： Ryoichi Nakatani ,  Masahiro Kitada ,  Naoki Koyama ,  Isamu Yuito ,  Hisashi Takano ,  Eijin Moriwaki ,  Mikio Suzuki ,  Masaaki Futamoto ,  Fumio Kugiya ,  Yoshibumi Matsuda ,  Kazuo Shiiki ,  Yoshinori Miyamura ,  Kyo Akagi ,  Takeshi Nakao ,  Hirotsugu Fukuoka ,  Takayuki Munemoto ,  Tokuho Takagaki ,  Toshio Kobayashi ,  Hideo Tanabe ,  Noboru Shimizu

IPC: G11B5/33

CPC classification number: G11B5/398 ,  B82Y10/00 ,  B82Y25/00 ,  G01R33/093 ,  G11B5/3903 ,  G11B5/3909 ,  G11B5/3929 ,  G11B5/3967 ,  G11B2005/0002 ,  G11B2005/0016 ,  G11B2005/3996 ,  H01F10/324 ,  H01F10/3254 ,  H01F10/3268 ,  H01L43/08 ,  Y10T29/49032 ,  Y10T29/49043 ,  Y10T29/49044 ,  Y10T29/49155

Abstract: The magnetoresistance effect element is of a multilayered structure having at least magnetic layers and an intermediate layer of an insulating material, a semiconductor or an antiferromagnetic material against the magnetic layers, and the magnetoresistance effect element has terminals formed at least on the opposite magnetic layers, respectively, so that a current flows in the intermediate layer. The film surfaces of all the magnetic layers constituting the magnetoresistance effect element are opposed substantially at right angles to the recording surface of a magnetic recording medium. Therefore, the area of the magnetic layers facing the recording surface of the magnetic recording medium can be extremely reduced, and thus the magnetic field from a very narrow region of the high-density recorded magnetic recording medium can be detected by the current which has a tunneling characteristic and passes through the intermediate layer.

Abstract translation: 磁阻效应元件是至少具有磁性层和抵抗磁性层的绝缘材料，半导体或反铁磁材料的中间层的多层结构，并且磁阻效应元件至少在相对的磁性层上形成端子， 从而电流在中间层中流动。 构成磁阻效应元件的所有磁性层的膜表面基本上与磁记录介质的记录表面成直角相对。 因此，能够极大地降低与磁记录介质的记录面对置的磁性层的面积，因此能够通过电流检测来自高密度记录磁记录介质的非常窄的区域的磁场 穿透特性，穿过中间层。

公开(公告)号：US5850326A

公开(公告)日：1998-12-15

申请号：US192794

申请日：1994-02-07

Applicant: Hisashi Takano ,  Naoki Koyama ,  Hideo Tanabe ,  Eijin Moriwaki ,  Isamu Yuito ,  Kazuo Shiiki ,  Tsuyoshi Ohnishi ,  Tohru Ishitani ,  Toshio Kobayashi ,  Hideo Todokoro ,  Chiaki Ishikawa

Inventor： Hisashi Takano ,  Naoki Koyama ,  Hideo Tanabe ,  Eijin Moriwaki ,  Isamu Yuito ,  Kazuo Shiiki ,  Tsuyoshi Ohnishi ,  Tohru Ishitani ,  Toshio Kobayashi ,  Hideo Todokoro ,  Chiaki Ishikawa

IPC: G11B5/11 ,  G11B5/127 ,  G11B5/187 ,  G11B5/31 ,  G11B5/39 ,  G11B5/147

CPC classification number: G11B5/3903 ,  G11B5/1278 ,  G11B5/1871 ,  G11B5/3103 ,  G11B5/3106 ,  G11B5/3116 ,  G11B5/3143 ,  G11B5/3163 ,  G11B5/3967 ,  G11B5/112

Abstract: In a composite magnetic head comprising a magnetoresistive read head including a magnetic thin film having a magnetoresistive effect and soft magnetic members interposing the soft magnetic film between them through a non-magnetic insulation layer, an induction type write head including poles formed in a moving direction of a medium and a conductor crossing the poles, and disposed in the proximity of the magnetoresistive head, and a substrate supporting these heads, part of a floating surface inclusive of the magnetic head constituent members has recesses and the read/write operations to and from the medium are effected by the portion interposed by these recesses.

Abstract translation: 在包括具有磁阻效应的磁性薄膜的磁阻读头的复合磁头和通过非磁性绝缘层将它们插入在它们之间的软磁性部件的感应型写头，包括在移动方向上形成的磁极 并且设置在磁阻头附近的基板和支撑这些磁头的基板，包括磁头构成部件在内的浮动表面的一部分具有凹部和从/ 介质由插入这些凹部的部分实现。

公开(公告)号：US4922360A

公开(公告)日：1990-05-01

申请号：US249306

申请日：1988-09-21

Applicant: Hisashi Takano ,  Naoki Koyama ,  Isamu Yuito ,  Kazuo Shiiki ,  Hideo Tanabe

Inventor： Hisashi Takano ,  Naoki Koyama ,  Isamu Yuito ,  Kazuo Shiiki ,  Hideo Tanabe

IPC: G11B5/39

CPC classification number: G11B5/3987 ,  G11B5/399

Abstract: A magnetic head includes a magnetoresistance element having the form of a loop and provided with a gap at a first portion opposite to a second portion confronting a magnetic recording medium, a coil conductor formed around the first portion of the magnetoresistance element for applying a bias magnetic field to the second portion of the magnetoresistance element in the direction of width of a track on the magnetic recording medium, and a lead conductor attached to the magnetoresistance element to cause a current which is necessary for detecting a signal recorded on the magnetic recording medium, to flow through the second portion of the magnetoresistance element, and formed together with the coil conductor as one body so that a part of a current supplied to the lead conductor flows through the coil conductor.

Abstract translation: 磁头包括具有环形形式的磁阻元件，并且在与面对磁记录介质的第二部分相对的第一部分处设置有间隙，围绕磁阻元件的第一部分形成的线圈导体，用于施加偏磁 在磁记录介质上的轨道的宽度方向上的磁阻元件的第二部分的磁场和连接到磁阻元件的引线导体，以产生检测记录在磁记录介质上的信号所必需的电流， 流过磁阻元件的第二部分，并且与线圈导体一起形成为一体，使得供应到引线导体的电流的一部分流过线圈导体。

公开(公告)号：US4636897A

公开(公告)日：1987-01-13

申请号：US539386

申请日：1983-10-06

Applicant: Hitoshi Nakamura ,  Kasuo Shiiki ,  Isamu Yuito ,  Yoshihiro Shiroishi ,  Hideo Fujiwara ,  Kiminari Shinagawa ,  Akemi Iijima

Inventor： Hitoshi Nakamura ,  Kasuo Shiiki ,  Isamu Yuito ,  Yoshihiro Shiroishi ,  Hideo Fujiwara ,  Kiminari Shinagawa ,  Akemi Iijima

IPC: G11B5/31 ,  G11B5/127 ,  G11B5/23 ,  G11B5/147 ,  G11B5/187 ,  G11B5/235

CPC classification number: G11B5/1278

Abstract: A perpendicular magnetic recording and reproducing thin film head of a structure excellent in magnetic characteristics and easy of fabrication, wherein a lower magnetic layer disposed on a flat nonmagnetic substrate is used as a main magnetic pole, a first insulator layer is formed on the main magnetic pole, a conductor for a coil and a second insulator layer are disposed on the first insulator layer, and an upper magnetic layer which lies in contact with the lower magnetic layer through the first insulator layer at one end thereof and directly at the other end thereof and which overlies the second insulator layer in a part thereof other than both the ends is disposed and used as an auxiliary magnetic pole.

Abstract translation: 磁性特性优良，制造容易的结构的垂直磁记录再生薄膜头，其特征在于，使用设置在平面非磁性基板上的下部磁性层作为主磁极，在主磁体上形成第一绝缘体层 极，用于线圈的导体和第二绝缘体层设置在第一绝缘体层上，并且上磁性层通过第一绝缘体层在其一端直接与下磁性层接触，并且在另一端处 并且在除了两端的部分中的第二绝缘体层之外的位置被布置并用作辅助磁极。

公开(公告)号：US4631612A

公开(公告)日：1986-12-23

申请号：US513615

申请日：1983-07-14

Applicant: Kazuo Shiiki ,  Yoshihiro Shiroishi ,  Isamu Yuito ,  Kiminari Shinagawa ,  Yasutaro Uesaka ,  Hideo Fujiwara ,  Hitoshi Nakamura

Inventor： Kazuo Shiiki ,  Yoshihiro Shiroishi ,  Isamu Yuito ,  Kiminari Shinagawa ,  Yasutaro Uesaka ,  Hideo Fujiwara ,  Hitoshi Nakamura

IPC: G11B5/31 ,  G11B5/00 ,  G11B5/02 ,  G11B5/127 ,  G11B5/62

CPC classification number: G11B5/1278 ,  G11B5/00 ,  G11B5/127 ,  G11B5/62

Abstract: A magnetic recording and reproducing system comprising (i) a magnetic head including a first magnetic pole whose saturation flux density is at least 7 kG and whose edge face is 0.15-0.5 .mu.m thick, and a second magnetic pole which lies on the same side as the first magnetic pole with respect to a recording medium and whose edge face is at least 10 times thicker than that of the first magnetic pole, and (ii) the perpendicular magnetic recording medium including a perpendicular magnetization layer which has a coercive force of 250-600 Oe. in a direction perpendicular to a plane thereof and which is 0.1-0.5 .mu.m thick.

Abstract translation: 一种磁记录和再现系统，包括（i）磁头，其包括饱和磁通密度至少为7kG并且其边缘面为0.15-0.5μm厚的第一磁极，以及位于同一侧的第二磁极 作为相对于记录介质的第一磁极并且其边缘面比第一磁极的边缘面厚至少10倍，以及（ii）垂直磁记录介质包括矫顽力为250的垂直磁化层 -600 Oe 在垂直于其平面的方向上，厚度为0.1-0.5μm。

公开(公告)号：US4539616A

公开(公告)日：1985-09-03

申请号：US400019

申请日：1982-07-20

Applicant: Isamu Yuito ,  Kazuo Shiiki ,  Atsushi Saiki ,  Yoshio Homma ,  Noriyuki Kumasaka ,  Yoshihiro Shiroishi ,  Mitsuhiro Kudo

Inventor： Isamu Yuito ,  Kazuo Shiiki ,  Atsushi Saiki ,  Yoshio Homma ,  Noriyuki Kumasaka ,  Yoshihiro Shiroishi ,  Mitsuhiro Kudo

IPC: G11B5/17 ,  G11B5/31 ,  G11B5/22 ,  G11B5/20

CPC classification number: G11B5/313 ,  G11B5/17 ,  Y10T29/49064

Abstract: Herein disclosed is a thin film magnetic head which is so constructed that a conductor layer arranged in a non-magnetic insulating layer isolating two magnetic poles and adapted to form a coil of plural turns has a height made larger than the width and gap thereof. A method of fabricating that head includes the step of forming a non-magnetic insulating layer, the step of etching the insulating layer by using a mask layer formed thereover as a mask, the step of depositing a metal for providing a conductor layer, the step of removing the mask layer together with the metal thereover, and the step forming a coating of a non-magnetic insulating layer thereover, thereby to form the conductor layer. The head thus fabricated has its magnetic recording and reproducing characteristics improved.

Abstract translation: 这里公开了一种薄膜磁头，其结构使得布置在隔离两个磁极并适于形成多个匝的线圈的非磁性绝缘层中的导体层具有比其宽度和间隙大的高度。 制造该头的方法包括形成非磁性绝缘层的步骤，通过使用其上形成的掩模层作为掩模蚀刻绝缘层的步骤，沉积用于提供导体层的金属的步骤，步骤 与金属一起除去掩模层，以及在其上形成非磁性绝缘层的涂层的步骤，从而形成导体层。 如此制造的磁头具有改善的磁记录和再现特性。

公开(公告)号：US4260665A

公开(公告)日：1981-04-07

申请号：US946194

申请日：1978-09-27

Applicant: Toshiyuki Aida ,  Sadanori Taguchi ,  Isamu Yuito ,  Ushio Kawabe ,  Shigehiko Yamamoto ,  Yukio Honda ,  Norio Shibata ,  Hiroshi Okano

Inventor： Toshiyuki Aida ,  Sadanori Taguchi ,  Isamu Yuito ,  Ushio Kawabe ,  Shigehiko Yamamoto ,  Yukio Honda ,  Norio Shibata ,  Hiroshi Okano

IPC: H01J1/26 ,  H01J1/14 ,  H01J1/15 ,  H01J9/04

CPC classification number: H01J9/04 ,  H01J1/14 ,  Y10T428/12028 ,  Y10T428/12618 ,  Y10T428/12875 ,  Y10T428/12944

Abstract: An electron tube cathode in such a structure comprising a Ni-W-Zr alloy (W content: 20-28 wt. %) having a grain size of 4-10 .mu.m as a base metal, a 1,000-2,000 A-thick Pt film provided on the surface of the base metal, and an electron emitting material layer consisting of alkaline earth metal oxide provided on the Pt film has less emission lowering and less peeling of the electron emitting material layer, even if placed in a long time service. The electron tube cathode can be produced according to a method comprising (i) a step of annealing a base metal of Ni-W-Zr alloy (W content: 20-28 wt. %) at 1,000.degree.-1,200.degree. C., (ii) a step of providing a 1,000-2,000 A thick Pt film on the surface of the base metal, and (iii) a step of providing an electron emitting material layer consisting of alkaline earth metal oxide on the Pt film.

Abstract translation: 这种结构中的电子管阴极，其特征在于：以贱金属为基准的粒径为4-10μm的Ni-W-Zr合金（W含量：20〜28重量％），1000〜 并且由于设置在Pt膜上的由碱土类金属氧化物构成的电子发射材料层即使放置在长时间的服务中也具有较少的发射降低和较少的电子发射材料层的剥离。 电子管阴极可以根据以下方法制造：（i）在1000-1200℃下退火Ni-W-Zr合金的母材（W含量：20-28重量％）的步骤，（ ii）在母材表面上提供1,000-2,000A厚的Pt膜的步骤，和（iii）在Pt膜上提供由碱土金属氧化物构成的电子发射材料层的步骤。