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81. 发明授权

US6011674A Magnetoresistance effect multilayer film with ferromagnetic film sublayers of different ferromagnetic material compositions 失效
标题翻译：具有不同铁磁材料组成的铁磁膜子层的磁阻效应多层膜
公开(公告)号：US6011674A
公开(公告)日：2000-01-04
申请号：US626333
申请日：1996-04-02
申请人： 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
发明人： 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分类号： G01R33/09 , G11B5/39 , H01F10/32 , H01L43/08 , G11B5/33
CPC分类号： G11B5/398 , B82Y10/00 , B82Y25/00 , G01R33/093 , G11B5/3903 , G11B5/3909 , G11B5/3929 , G11B5/3967 , H01F10/324 , H01F10/3254 , H01F10/3268 , H01L43/08 , G11B2005/0002 , G11B2005/0016 , G11B2005/3996 , Y10T29/49032 , Y10T29/49043 , Y10T29/49044 , Y10T29/49155
摘要： 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-denisity recorded magnetic recording medium can be detected by the current which has a tunneling characteristic and passes through the intermediate layer.
摘要翻译：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，使得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，可以极大地降低与磁记录介质的记录表面相对的磁性层的面积，因此可以通过具有一个磁记录介质的电流来检测来自高耐度记录磁记录介质的非常狭窄区域的磁场穿透特性，穿过中间层。

82. 发明授权

US5910871A Magnetic head having track width specified by grooves formed with projection ion beam 失效
标题翻译：磁头具有由投影离子束形成的槽指定的轨道宽度
公开(公告)号：US5910871A
公开(公告)日：1999-06-08
申请号：US837218
申请日：1997-04-22
申请人： Yoshimi Kawanami , Hisashi Takano , Kaoru Umemura , Yuichi Madokoro , Satoshi Tomimatsu
发明人： Yoshimi Kawanami , Hisashi Takano , Kaoru Umemura , Yuichi Madokoro , Satoshi Tomimatsu
IPC分类号： G11B5/187 , G11B5/31 , G11B5/39 , G11B5/40 , G11B5/127
CPC分类号： G11B5/3967 , G11B5/1871 , G11B5/3106 , G11B5/3116 , G11B5/3163 , G11B5/40 , Y10S977/949
摘要： The track width of a magnetic head is specified by the interval between a pair of grooves in the slider surface that are formed by a projection ion beam. Specifically, the grooves are processed by projecting a mask having the pattern of the pair of grooves with a projection ion beam with reduction to a magnification of 1/10, for example. Although the peripheral strain of the pattern thus formed is large and the current distortion is not uniform when the projection ion beam batch irradiation area is limited, the increase in depth of the grooves formed at the periphery of the grooves does not affect the track narrowing process at the center portion of the projection ion beam since the strain thereof is negligibly small. As a result, a narrow track width is processed with high precision.
摘要翻译：磁头的磁道宽度由滑块表面中由突出离子束形成的一对凹槽之间的间隔来确定。具体地说，例如，通过将具有一对凹槽的图案的掩模用投影离子束投射到+ E，fra 1/10 + EE的放大倍数来进行处理。虽然如此形成的图案的周边应变大，并且当投影离子束批量照射区域受限时电流变形不均匀，但是形成在凹槽周边的凹槽的深度增加不影响轨道变窄处理由于其应变可忽略不计，所以在投影离子束的中心部分。结果，以高精度处理窄轨道宽度。

83. 发明授权

US5726837A Multilayer magnetoresistance effect-type magnetic head 失效
标题翻译：多层磁阻效应式磁头
公开(公告)号：US5726837A
公开(公告)日：1998-03-10
申请号：US328090
申请日：1994-10-24
申请人： 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
发明人： 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分类号： G01R33/09 , G11B5/39 , H01F10/32 , H01L43/08 , G11B5/33
CPC分类号： G11B5/398 , B82Y10/00 , B82Y25/00 , G01R33/093 , G11B5/3903 , G11B5/3909 , G11B5/3929 , G11B5/3967 , H01F10/324 , H01F10/3254 , H01F10/3268 , H01L43/08 , G11B2005/0002 , G11B2005/0016 , G11B2005/3996 , Y10T29/49032 , Y10T29/49043 , Y10T29/49044 , Y10T29/49155
摘要： 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.
摘要翻译：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，使得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。

84. 发明授权

US5568331A Method of head positioning and magnetic recording disk drive using the same 失效
标题翻译：磁头定位和磁记录磁盘驱动器的使用方法
公开(公告)号：US5568331A
公开(公告)日：1996-10-22
申请号：US603320
申请日：1990-10-25
申请人： Kyo Akagi , Masaaki Futamoto , Fumio Kugiya , Yoshinori Miyamura , Hisashi Takano , Yoshibumi Matsuda , Mikio Suzuki , Takeshi Nakao , Takayuki Munemoto , Hirotsugu Fukuoka , Makoto Aihara , Tokuho Takagaki , Hajime Aoi , Yosuke Seo
发明人： Kyo Akagi , Masaaki Futamoto , Fumio Kugiya , Yoshinori Miyamura , Hisashi Takano , Yoshibumi Matsuda , Mikio Suzuki , Takeshi Nakao , Takayuki Munemoto , Hirotsugu Fukuoka , Makoto Aihara , Tokuho Takagaki , Hajime Aoi , Yosuke Seo
IPC分类号： G11B5/584 , G11B5/596
CPC分类号： G11B5/59688 , G11B5/584
摘要： A method and device of head positioning in an information recording/reading device in which a magnetic recording medium with data tracks for recording information thereon is provided and a magnetic head is positioned on the data track to record/read out the information, wherein a data signal is recorded in the data recording layer of said recording medium, a servo signal is recorded in the servo signal recording layer located below said data signal recording layer, said data signal is read out using a data magnetic head whereas said servo signal is read out using a servo magnetic head, and the frequency of said servo signal is within the range of the gap-null frequency of said data magnetic head whereas the frequency of said data signal is within the range of the gap-null frequency of said servo magnetic head, and said magnetic head is positioned on the data track on the basis of said servo signal. A method and device of head positioning in an information recording/reading device in which a magnetic recording medium with data tracks for recording information thereon is provided and a magnetic head is positioned on the data track to record/read out the information, wherein the data tracks are discrete tracks in which adjacent data tracks are separated by a groove located therebetween, a data signal is recorded on the data track of said recording medium, a servo signal is recorded on the servo tracks of grooves between said adjacent data tracks, and said magnetic head is positioned on the data track on the basis of said servo signal.
摘要翻译：一种在信息记录/读取装置中头部定位的方法和装置，其中提供具有用于记录信息的数据轨道的磁记录介质，并且磁头位于数据轨道上以记录/读出信息，其中数据信号被记录在所述记录介质的数据记录层中，伺服信号被记录在位于所述数据信号记录层下方的伺服信号记录层中，所述数据信号使用数据磁头读出，而所述伺服信号被读出使用伺服磁头，并且所述伺服信号的频率在所述数据磁头的间隙零频率的范围内，而所述数据信号的频率在所述伺服磁头的间隙空位频率的范围内并且所述磁头基于所述伺服信号位于数据轨道上。一种在信息记录/读取装置中头部定位的方法和装置，其中提供具有用于记录信息的数据轨道的磁记录介质，并且磁头位于数据轨道上以记录/读出信息，其中数据轨道是离散轨道，其中相邻数据轨道由位于其间的凹槽分开，数据信号被记录在所述记录介质的数据轨道上，伺服信号被记录在所述相邻数据轨道之间的凹槽的伺服轨道上，并且所述磁头基于所述伺服信号位于数据轨道上。

85. 发明授权

US5390061A Multilayer magnetoresistance effect-type magnetic head 失效
标题翻译：多层磁阻效应型磁头
公开(公告)号：US5390061A
公开(公告)日：1995-02-14
申请号：US710775
申请日：1991-06-05
申请人： 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
发明人： 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分类号： G01R33/09 , G11B5/39 , H01F10/32 , H01L43/08 , G11B5/33
CPC分类号： G11B5/398 , B82Y10/00 , B82Y25/00 , G01R33/093 , G11B5/3903 , G11B5/3909 , G11B5/3929 , G11B5/3967 , H01F10/324 , H01F10/3254 , H01F10/3268 , H01L43/08 , G11B2005/0002 , G11B2005/0016 , G11B2005/3996 , Y10T29/49032 , Y10T29/49043 , Y10T29/49044 , Y10T29/49155
摘要： 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 magneto-resistance 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.
摘要翻译：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，并且磁阻效应元件具有至少形成在相对的磁体上的端子层，使得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。

86. 发明授权

US5126907A Thin film magnetic head having at least one magnetic core member made at least partly of a material having a high saturation magnetic flux density 失效
标题翻译：薄膜磁头具有至少部分地由具有高饱和磁通密度的材料制成的至少一个磁芯构件
公开(公告)号：US5126907A
公开(公告)日：1992-06-30
申请号：US525666
申请日：1990-05-21
申请人： Yoshihiro Hamakawa , Isamu Yuito , Hisashi Takano , Naoki Koyama , Eijin Moriwaki , Shinobu Sasaki , Kazuo Shiiki
发明人： Yoshihiro Hamakawa , Isamu Yuito , Hisashi Takano , Naoki Koyama , Eijin Moriwaki , Shinobu Sasaki , Kazuo Shiiki
IPC分类号： G11B5/31
CPC分类号： G11B5/3153 , G11B5/3113
摘要： A thin film magnetic head has a first magnetic core member carried by a substrate, a gap layer formed on the first magnetic core member, and a second magnetic core member formed in a spaced relation with the first magnetic core member. The second magnetic core member is coupled to the first magnetic core member to form a magnetic path and to have an end portion of the gap layer sandwiched by gap defining portions of the first and second magnetic core members. A coil conductor is wound about the magnetic path. In one embodiment, the first magnetic core member includes a first magnetic layer made of a magnetic material having stable magnetic properties during heat treatment and the second magnetic core member includes a second magnetic layer made of a material having a saturation flux density higher than that of the material of the first magnetic core member.
摘要翻译：薄膜磁头具有由基板承载的第一磁芯构件，形成在第一磁芯构件上的间隙层和与第一磁芯构件间隔开地形成的第二磁芯构件。第二磁芯部件耦合到第一磁芯部件以形成磁路，并且间隙层的端部夹在第一和第二磁芯部件的间隙限定部分之间。线圈导体缠绕在磁路上。在一个实施例中，第一磁芯构件包括由在热处理期间具有稳定磁特性的磁性材料制成的第一磁性层，第二磁芯构件包括由饱和磁通密度高于第一磁芯构件的材料。

87. 发明授权

US5083226A Magnetic disk drive 失效
标题翻译：磁盘驱动器
公开(公告)号：US5083226A
公开(公告)日：1992-01-21
申请号：US410495
申请日：1989-09-21
申请人： Kazuo Shiiki , Yoshihiro Shiroishi , Norio Ohta , Toshiaki Tsuyoshi , Hisashi Takano , Fumio Kugiya
发明人： Kazuo Shiiki , Yoshihiro Shiroishi , Norio Ohta , Toshiaki Tsuyoshi , Hisashi Takano , Fumio Kugiya
IPC分类号： G11B5/596 , G11B5/82
CPC分类号： G11B5/82 , G11B5/596 , G11B5/59683
摘要： A magnetic-disk drive includes: a magnetic disk having a ridge pattern consisting of at least one ridge extending in the circumferential direction; a recording/reproduction head arranged over the surface of the magnetic disk and having a track width larger than the width of the ridge of the pattern and smaller than the pattern pitch; a device for rotating the magnetic disk; and a recording/reproduction circuit.
摘要翻译：磁盘驱动器包括：磁盘，其具有由沿圆周方向延伸的至少一个脊的脊图形; 记录/再现头，布置在磁盘的表面上，并且具有比图案的脊的宽度大于图案间距的轨道宽度; 用于旋转磁盘的装置; 和记录/再现电路。

88. 发明授权

US4907114A Mangeto-resistive type read head 失效
标题翻译：电阻型读头
公开(公告)号：US4907114A
公开(公告)日：1990-03-06
申请号：US201739
申请日：1988-06-03
申请人： Kazuo Shiiki , Masahiro Kitada , Hideo Tanabe , Hitoshi Nakamura , Isamu Yuito , Hisashi Takano
发明人： Kazuo Shiiki , Masahiro Kitada , Hideo Tanabe , Hitoshi Nakamura , Isamu Yuito , Hisashi Takano
IPC分类号： G11B5/39
CPC分类号： G11B5/3932 , G11B5/3987
摘要： A magneto-resistive type read head has a substrate, a magnetic film exhibiting a magneto-resistive effect arranged in the widthwise direction of the track of a magnetic writing disk, and lead electrodes for feeding an electric current to the track width portion of the magnetic film for reading the signals written in the magnetic writing disk. The magneto-resistive film extends over a width wider than the track width portion and a soft magnetic thin film is formed over the magneto-resistive film on either side of the track width portion to absorb the domain wall so that the magneto-resistive film takes the single domain structure.
摘要翻译：磁阻型读取头具有衬底，在磁性写盘的轨道的宽度方向上布置的磁阻效应的磁性膜和用于将电流馈送到磁性磁道的磁道宽度部分的引线电极用于读取写入磁性写入盘的信号的胶片。磁阻薄膜的宽度大于轨道宽度部分的宽度，并且在磁道宽度部分两侧的磁阻膜上方形成软磁性薄膜，以吸收畴壁，使得磁阻薄膜单域结构。

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