公开(公告)号：US5786952A

公开(公告)日：1998-07-28

申请号：US562203

申请日：1995-11-22

申请人： Masuo Umemoto ,  Yoshihiro Shiroishi ,  Reijiro Tsuchiya ,  Kyo Akagi ,  Takehiko Hamaguchi ,  Takashi Kawabe ,  Atsushi Saito ,  Kouichirou Wakabayashi

发明人： Masuo Umemoto ,  Yoshihiro Shiroishi ,  Reijiro Tsuchiya ,  Kyo Akagi ,  Takehiko Hamaguchi ,  Takashi Kawabe ,  Atsushi Saito ,  Kouichirou Wakabayashi

IPC分类号： G11B5/012 ,  G11B5/035 ,  G11B5/09 ,  G11B5/48 ,  G11B5/49 ,  G11B5/55 ,  G11B5/596 ,  G11B20/10

CPC分类号： G11B5/59633 ,  G11B20/10009 ,  G11B5/012 ,  G11B5/09 ,  G11B5/4886 ,  G11B5/4976 ,  G11B5/5526 ,  G11B5/035

摘要： A magnetic digital storage method and system which can improve a recording density and can reduce a cross-talk upon reproducing. An inputted high-speed digital signal is converted to a plurality of low-speed digital signal sequences by a recording circuit and each of the low-speed signal sequence is recorded onto a plurality of adjacent recorded tracks of a recording medium by integrated parallel recording heads. One servo signal is commonly recorded to the plurality of recorded tracks. Further, when recording the digital signal to the adjacent recorded tracks of the recording medium, a delay of a signal that is applied to each recording head is adjusted such that the phases of magnetic transition points given by the recording signal in the adjacent recorded tracks are not identical in the circumferential direction.

摘要翻译： 一种磁数字存储方法和系统，其可以提高记录密度并且可以在再现时减少串扰。 输入的高速数字信号通过记录电路转换成多个低速数字信号序列，并且每个低速信号序列通过集成并行记录头记录在记录介质的多个相邻的记录磁道上 。 一个伺服信号通常记录到多个记录的轨道。 此外，当将数字信号记录到记录介质的相邻记录磁道时，调整施加到每个记录头的信号的延迟，使得由相邻记录磁道中的记录信号给出的磁转变点的相位为 在圆周方向上不相同。

公开(公告)号：US6130797A

公开(公告)日：2000-10-10

申请号：US913835

申请日：1997-09-16

申请人： Kyo Akagi ,  Yoshihiro Shiroishi ,  Reijiro Tsuchiya ,  Takehiko Hamaguchi ,  Masuo Umemoto ,  Mikio Suzuki ,  Takashi Kawabe ,  Katsuro Watanabe ,  Kiyoshi Matsumoto ,  Atsushi Saito ,  Kouichirou Wakabayashi ,  Yosuke Hamada

发明人： Kyo Akagi ,  Yoshihiro Shiroishi ,  Reijiro Tsuchiya ,  Takehiko Hamaguchi ,  Masuo Umemoto ,  Mikio Suzuki ,  Takashi Kawabe ,  Katsuro Watanabe ,  Kiyoshi Matsumoto ,  Atsushi Saito ,  Kouichirou Wakabayashi ,  Yosuke Hamada

IPC分类号： G11B5/596 ,  G11B7/095 ,  G11B11/105

CPC分类号： G11B5/59655 ,  G11B11/10576 ,  G11B5/59627 ,  G11B11/10578 ,  G11B7/0953

摘要： Virtual tracks are set so that the rotation center of a magnetic recording medium or the vicinity of the rotation center coincides with the track center of the data information, and positioning servo control is performed. Thus, since it is not necessary to faithfully follow the track center line specified by the servo information that is previously recorded on the magnetic recording medium or magnetooptical recording medium, a vibration is not easily caused in synchronism with the rotation. Therefore, when the rotation center and the pattern center are deviated from each other, since a vibration is not caused in synchronism with the rotation, the magnetic head of the magnetic recorder or the magnetooptical head of the magnetooptical recorder is able to follow tracks with higher precision. Accordingly, the recording density can be increased.

摘要翻译： PCT No.PCT / JP95 / 00474 Sec。 371日期1997年9月17日 102（e）1997年9月17日PCT 1995年3月17日PCT公布。 公开号WO96 / 29700 日期1996年9月26日设置虚拟磁道，使得磁记录介质的旋转中心或旋转中心附近与数据信息的轨道中心一致，并执行定位伺服控制。 因此，由于不需要忠实地跟踪由先前记录在磁记录介质或磁光记录介质上的伺服信息指定的轨道中心线，因此不易与旋转同步地产生振动。 因此，当旋转中心和图案中心彼此偏离时，由于不会与旋转同步地产生振动，磁记录器的磁头或磁光记录器的磁光头能够跟随具有更高的轨迹 精确。 因此，可以提高记录密度。

公开(公告)号：US06693774B2

公开(公告)日：2004-02-17

申请号：US09803032

申请日：2001-03-12

申请人： Katsuro Watanabe ,  Hiromasa Takahashi ,  Nobuo Yoshida ,  Takashi Kawabe ,  Kazuhiro Nakamoto

发明人： Katsuro Watanabe ,  Hiromasa Takahashi ,  Nobuo Yoshida ,  Takashi Kawabe ,  Kazuhiro Nakamoto

IPC分类号： G11B5127

CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G11B5/3903 ,  G11B5/3909 ,  G11B5/40 ,  G11B2005/3996

摘要： A magnetoresistive sensor which, despite a narrow reproducing shield gap, affords high resolution and high reproducing output because of its structure and is able to minimize the amount of sense current leaking into the shield layer through the gap layer. A magnetic storage apparatus suitable for high-density recording is provided with a magnetic head having said magnetoresistive sensor. The structure is characterized in that at least either of the lower shield layer or upper shield layer is partly or entirely a magnetic layer which is a composite film composed of ferromagnetic metal and oxide, and an insulation protective film is arranged between the electrode film or longitudinal bias film and the magnetic film which is a composite film composed of ferromagnetic metal and oxide.

摘要翻译： 尽管具有窄的再现屏蔽间隙，磁阻传感器由于其结构而提供高分辨率和高再现输出，并且能够使通过间隙层泄漏到屏蔽层中的感测电流的量最小化。 适用于高密度记录的磁存储装置设置有具有所述磁阻传感器的磁头。 该结构的特征在于，下屏蔽层或上屏蔽层中的至少一个部分或全部是作为由铁磁性金属和氧化物构成的复合膜的磁性层，绝缘保护膜设置在电极膜或纵向 偏置膜和由铁磁性金属和氧化物构成的复合膜的磁性膜。

公开(公告)号：US06483663B2

公开(公告)日：2002-11-19

申请号：US09354467

申请日：1999-07-15

申请人： Tomohiro Okada ,  Tetsuya Okai ,  Shinobu Sasaki ,  Tadayuki Iwakura ,  Naoki Koyama ,  Takashi Kawabe ,  Harunobu Saito ,  Makoto Morijiri

发明人： Tomohiro Okada ,  Tetsuya Okai ,  Shinobu Sasaki ,  Tadayuki Iwakura ,  Naoki Koyama ,  Takashi Kawabe ,  Harunobu Saito ,  Makoto Morijiri

IPC分类号： G11B5147

CPC分类号： G11B5/3116 ,  G11B5/012 ,  G11B5/3163 ,  Y10T29/49032 ,  Y10T29/49041 ,  Y10T29/49043 ,  Y10T29/49044 ,  Y10T29/49046 ,  Y10T29/49048 ,  Y10T29/49052

摘要： Disclosed is a magnetic disk apparatus including a magnetic reproducing head portion, and a magnetic recording head including an upper magnetic core having a end portion and a rear portion. As a resist for a frame which is used for forming the rear portion, a negative resist or an electron beam resist is used, whereby the frame is formed without any adverse effect of halation from a coil insulating film. That is, it is possible to manufacture a magnetic recording head in which the rear portion of an upper magnetic core is not emerged at the face opposed to a medium, and hence to obtain a magnetic disk apparatus exhibiting an areal recording density of 5 Gbit/in2 or more by mounting a magnetic recording/reproducing head including such a magnetic recording head.

摘要翻译： 公开了一种包括磁性再现头部的磁盘装置和包括具有端部和后部的上部磁芯的磁性记录头。 作为用于形成后部的框架的抗蚀剂，使用负性抗蚀剂或电子束抗蚀剂，由此形成框架，而不会产生从线圈绝缘膜的不利影响。 也就是说，可以制造其中在与介质相对的表面上没有出现上磁芯的后部的磁记录头，从而获得表现出5Gbit / s的面密度的磁盘装置， in2以上，通过安装包括这种磁记录头的磁记录/再现头。

公开(公告)号：US06385009B2

公开(公告)日：2002-05-07

申请号：US09899215

申请日：2001-07-06

申请人： Masaaki Sano ,  Yoshiaki Kita ,  Shun-ichi Narumi ,  Takashi Kawabe ,  Moriaki Fuyama ,  Hisashi Takano ,  Hisano Yamamoto ,  Kenzo Masuda

发明人： Masaaki Sano ,  Yoshiaki Kita ,  Shun-ichi Narumi ,  Takashi Kawabe ,  Moriaki Fuyama ,  Hisashi Takano ,  Hisano Yamamoto ,  Kenzo Masuda

IPC分类号： G11B531

CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G11B5/012 ,  G11B5/3109 ,  G11B5/3163 ,  G11B5/3967 ,  G11B2005/3996 ,  H01F41/26

摘要： A thin film magnetic head having a first magnetic core, a second magnetic core formed on the first magnetic core, a coil disposed between the first magnetic core and second magnetic core, and a non-magnetic insulator body for separating the first magnetic core, second magnetic core and coil with respect to each other. At least one of the first magnetic core and the second magnetic core includes an electroplated thin film with an average crystal grain size smaller than 500 Å and the electroplated thin film is made of Ni—Fe alloy of which Ni is 38 to 60 wt % and Fe is 40 to 62 wt %.

摘要翻译： 一种薄膜磁头，具有第一磁芯，形成在第一磁芯上的第二磁芯，设置在第一磁芯和第二磁芯之间的线圈和用于分离第一磁芯的非磁性绝缘体，第二磁芯 磁芯和线圈相对于彼此。 第一磁芯和第二磁芯中的至少一个包括平均晶粒尺寸小于500的电镀薄膜，电镀薄膜由Ni为38〜60重量％的Ni-Fe合金构成， Fe为40〜62重量％。

公开(公告)号：US06275360B1

公开(公告)日：2001-08-14

申请号：US09159752

申请日：1998-09-24

申请人： Kazuhiro Nakamoto ,  Takashi Kawabe ,  Tetsuo Kobayashi ,  Shun-ichi Marumi ,  Shinji Narishige ,  Takao Imagawa

发明人： Kazuhiro Nakamoto ,  Takashi Kawabe ,  Tetsuo Kobayashi ,  Shun-ichi Marumi ,  Shinji Narishige ,  Takao Imagawa

IPC分类号： G11B539

CPC分类号： G11B5/3967 ,  G11B5/11 ,  G11B5/3109 ,  G11B5/3912

摘要： A read-write head is capable of suppressing fluctuation on a reproduced waveform caused by repetition of a writing and reading operation, and is capable suppressing noise appearing in the reproduced waveform just after a writing operation is carried out. The read-write head has an upper magnetic core, an upper shield also serving as an lower magnetic core, a lower shield and a magnetoresistive film arranged between the upper shield and the lower shield. The upper shield has a soft magnetic film having a magnitude of anisotropy field of 5 to 30 Oe, or is a multilayer film composed of a high saturation magnetic flux density film and a negative magneto-striction film. The lower shield has a soft magnetic film having a magnitude of anisotropy field of 5 to 30 Oe.

摘要翻译： 读写头能够抑制由重复写入和读取操作引起的再现波形的波动，并且能够在刚刚执行写入操作之后抑制再现波形中出现的噪声。 读写头具有上磁芯，也可用作下磁芯的上屏蔽，下屏蔽和布置在上屏蔽和下屏蔽之间的磁阻膜。 上屏蔽具有各向异性磁场强度为5〜30Oe的软磁性膜，或者是由高饱和磁通密度膜和负磁致密膜构成的多层膜。 下屏蔽具有各向异性磁场强度为5〜30Oe的软磁性膜。

公开(公告)号：US5995338A

公开(公告)日：1999-11-30

申请号：US733713

申请日：1996-10-23

申请人： Katsuro Watanabe ,  Takashi Kawabe ,  Shigeru Tadokoro ,  Hiroshi Kamio ,  Takao Imagawa

发明人： Katsuro Watanabe ,  Takashi Kawabe ,  Shigeru Tadokoro ,  Hiroshi Kamio ,  Takao Imagawa

IPC分类号： G11B5/012 ,  G11B5/39 ,  G11B5/55 ,  G11B5/596

CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G11B5/3903 ,  G11B5/3932 ,  G11B2005/3996 ,  G11B5/012 ,  G11B5/5526 ,  G11B5/59683

摘要： A magnetoresistive head in which Barkhausen noise is substantially suppressed and a variation in reproduction is minimized, and a magnetic disk apparatus using the same magnetic head have been provided. The feature of the magnetic head and the magnetic disk apparatus of the invention resides in the provision of a longitudinal bias layer which comprises a hard magnetic thin film formed on an underlayer made of either a ferromagnetic thin film having a body-centered cubic lattice crystal structure, or an amorphous ferromagnetic thin film or antiferromagnetic thin film having a body-centered cubic lattice crystal structure.

公开(公告)号：US5806482A

公开(公告)日：1998-09-15

申请号：US757980

申请日：1996-11-27

申请人： Kyoya Igarashi ,  Satoshi Yoshikawa ,  Kenji Goto ,  Takashi Kawabe ,  Katsunori Ueda ,  Nobuaki Murakami ,  Hideyuki Oda ,  Hiromitsu Ando

发明人： Kyoya Igarashi ,  Satoshi Yoshikawa ,  Kenji Goto ,  Takashi Kawabe ,  Katsunori Ueda ,  Nobuaki Murakami ,  Hideyuki Oda ,  Hiromitsu Ando

IPC分类号： F02B1/04 ,  F02B3/06 ,  F02B17/00 ,  F02B23/10 ,  F02B31/00 ,  F02B31/08 ,  F02B75/02 ,  F02B75/12 ,  F02F1/24 ,  F02F1/42 ,  F02F3/26 ,  F02F3/28 ,  F02B23/08

CPC分类号： F02F3/26 ,  F02B17/005 ,  F02B23/104 ,  F02B31/00 ,  F02B31/085 ,  F02F1/242 ,  F02F3/28 ,  F02B1/04 ,  F02B2023/106 ,  F02B2023/107 ,  F02B2023/108 ,  F02B2031/006 ,  F02B2075/025 ,  F02B2075/027 ,  F02B2075/125 ,  F02B2275/40 ,  F02B2275/48 ,  F02B3/06 ,  F02F1/4214 ,  F02F2001/241 ,  F02F2001/245 ,  Y02T10/123 ,  Y02T10/125 ,  Y02T10/146

摘要： This invention relates to an in-cylinder injection internal combustion engine. A lower wall of a cylinder head, said lower wall defining an upper wall of a combustion chamber, is configured in the form of a pentroof composed of an intake-valve-side, tilted, lower wall and an exhaust-valve-side, tilted, lower wall. A spark plug is arranged in the vicinity of a top part of the pentroof-shaped upper wall of the combustion chamber. A top wall of a piston, said top wall forming a lower wall of the combustion chamber, is configured in the form of a pentroof having an intake-valve-side, tilted, top wall and an exhaust-valve-side, tilted, top wall formed so that they correspond the intake-valve-side, tilted, lower wall and the exhaust-valve-side, tilted, lower wall of the cylinder head. A recessed portion is arranged in the intake-valve-side, tilted, top wall in the top wall of the piston.

摘要翻译： 本发明涉及一种缸内喷射内燃机。 气缸盖的下壁，所述下壁限定燃烧室的上壁，被构造成由进气阀侧，倾斜的，下壁和排气阀侧组成的戊炔的形式，倾斜 ，下墙。 火花塞布置在燃烧室的五角形上壁的顶部附近。 活塞的顶壁，形成燃烧室的下壁的所述顶壁被构造成具有进气阀侧，倾斜顶壁和排气阀侧倾斜顶部的戊烯的形式 壁形成为使得它们对应于气缸盖的进气阀侧，倾斜，下壁和排气阀侧，倾斜的下壁。 在活塞顶壁的进气阀侧倾斜的顶壁上设有凹部。

公开(公告)号：US07460335B2

公开(公告)日：2008-12-02

申请号：US11415572

申请日：2006-05-01

申请人： Yohji Maruyama ,  Tadayuki Iwakura ,  Takashi Kawabe ,  Makoto Morijiri ,  Hiroshi Fukui

发明人： Yohji Maruyama ,  Tadayuki Iwakura ,  Takashi Kawabe ,  Makoto Morijiri ,  Hiroshi Fukui

IPC分类号： G11B5/60

CPC分类号： G11B5/3136 ,  G11B5/3106 ,  G11B5/6005

摘要： A magnetic head comprises a retrieving unit for converting magnetic information output from a recording medium into an electric signal, a writing unit having the function of electromagnetic conversion for writing the magnetic information in the recording medium in response to the electric signal, and a first protective film formed on the retrieving unit. A second protective film is formed on the first protective film. The coefficient of linear expansion of the second protective film is reduced in comparison with that of the first protective film. Furthermore, the first protective film is an alumina film; in contrast, the second protective film is a film made of an alumina film containing silicon oxide therein.

摘要翻译： 磁头包括用于将从记录介质输出的磁信息转换为电信号的检索单元，具有电磁转换功能的写入单元，用于响应于电信号将磁信息写入记录介质中;以及第一保护 在检索单元上形成的胶片。 在第一保护膜上形成第二保护膜。 与第一保护膜相比，第二保护膜的线膨胀系数降低。 此外，第一保护膜是氧化铝膜; 相反，第二保护膜是由其中含有氧化硅的氧化铝膜制成的膜。

公开(公告)号：US06723449B2

公开(公告)日：2004-04-20

申请号：US09917892

申请日：2001-07-31

申请人： Kazue Kudo ,  Yasuyuki Okada ,  Nobuo Yoshida ,  Moriaki Fuyama ,  Noriyuki Saiki ,  Gen Oikawa ,  Takashi Kawabe ,  Makoto Morijiri

发明人： Kazue Kudo ,  Yasuyuki Okada ,  Nobuo Yoshida ,  Moriaki Fuyama ,  Noriyuki Saiki ,  Gen Oikawa ,  Takashi Kawabe ,  Makoto Morijiri

IPC分类号： G11B5127

CPC分类号： G11B5/3109 ,  G11B5/3153 ,  G11B5/3163 ,  Y10T29/49032 ,  Y10T428/11 ,  Y10T428/1121 ,  Y10T428/115 ,  Y10T428/12931

摘要： A material for magnetic pole for attaining a writing head generating an intense recording magnetic field, and a structure and a manufacturing method therefor. The thin film magnetic head includes a magnetic pole layer having a plated magnetic layer containing Co, Ni and Fe formed on a plated underlayer of a sputtered magnetic layer containing Co, Ni and Fe. The CoNiFe magnetic layer having a composition: 40 wt %≦Co≦70 wt %, 10 wt %≦Ni≦25 wt % and 10 wt %≦Fe≦30 wt % and a peak intensity ratio in the X-ray diffraction of I(200)/I(111)≧0.5 and I(110)/I(111)≧1 (defining peak intensities for the face-centered cubic fcc (111) face, fcc (200) face and the body-centered cubic bcc (119) face as: I(111), I(200), I(110)).

摘要翻译： 用于获得产生强烈记录磁场的写入头的用于磁极的材料及其结构及其制造方法。 薄膜磁头包括具有包含Co，Ni和Fe的镀覆磁性层的磁极层，其形成在包含Co，Ni和Fe的溅射磁性层的镀覆底层上。 CoNiFe磁性层的组成为：40重量％<= Co <= 70重量％，10重量％<= Ni <= 25重量％，10重量％<= Fe <= 30重量％ （111）= 0.5（I（110）/ I（111）> = 1（定义面心立方fcc（111）面的峰强度，fcc（200））的X射线衍射 面部和体心立方体bcc（119）面为：I（111），I（200），I（110））。