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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。
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2.发明授权Magnetic disc apparatus with thin film head suitable for high-density recording 失效具有适用于高密度记录的薄膜头的磁盘装置
公开(公告)号：US5296979A
公开(公告)日：1994-03-22
申请号：US963039
申请日：1992-10-19
申请人： Takashi Kawabe , Moriaki Fuyama , Shinji Narishige , Masatoshi Tsuchiya , Eiji Ashida , Makoto Morijiri , Hideki Yamazaki , Yutaka Sugita , Hiroshi Fukui , Tadayuki Iwakura , Makoto Aihara , Makoto Saito , Shunichiro Kuwatsuka , Hiroshi Ikeda , Yokuo Saitoh
发明人： Takashi Kawabe , Moriaki Fuyama , Shinji Narishige , Masatoshi Tsuchiya , Eiji Ashida , Makoto Morijiri , Hideki Yamazaki , Yutaka Sugita , Hiroshi Fukui , Tadayuki Iwakura , Makoto Aihara , Makoto Saito , Shunichiro Kuwatsuka , Hiroshi Ikeda , Yokuo Saitoh
CPC分类号： G11B5/012 , G11B5/3116
摘要： A magnetic disc apparatus includes a magnetic disc for recording information; a thin film magnetic head including a magnetic pole structure having an upper magnetic pole tip and a lower magnetic pole tip arranged to provide a magnetic gap at respective end portions thereof for writing and reading information in and from the magnetic disc; a device for rotating the magnetic disc; and a device for positioning the thin film magnetic head; the upper and lower magnetic pole tips having different contours at the respective end portions as viewed from a side confronting the magnetic disc wherein the difference (.DELTA.CW in .mu.m) in the width, along the magnetic gap, of the upper magnetic pole tip and the width, along the magnetic gap, of the lower magnetic pole tip satisfies the relation0
摘要翻译： 磁盘装置包括用于记录信息的磁盘; 包括具有上磁极端头和下磁极端头的磁极结构的薄膜磁头，其布置成在其各个端部处提供磁隙以在磁盘中写入和读取信息; 用于旋转磁盘的装置; 以及用于定位薄膜磁头的装置; 所述上磁极尖端和下磁极尖在相应端部处具有不同的轮廓，从与磁盘相对的一侧观察，其中沿着上部的磁隙的宽度（（delta）CW）（（m））） 磁极尖端和下磁极尖端的磁隙的宽度满足磁道密度Tr为每英寸1800或更多磁道的磁盘的关系0 <（Delta）CW <= 5000 / Tr。
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3.发明授权
公开(公告)号：US5245493A
公开(公告)日：1993-09-14
申请号：US495908
申请日：1990-03-20
申请人： Takashi Kawabe , Moriaki Fuyama , Shinji Narishige , Eizi Ashida , Makoto Morijiri , Masanori Tanabe , Hiroshi Fukui , Yutaka Sugita , Hiroshi Ikeda , Masaaki Hayashi , Kazuo Nakagoshi , Kanji Kawakami , Yokuo Saitoh , Shunichiro Kuwatsuka
发明人： Takashi Kawabe , Moriaki Fuyama , Shinji Narishige , Eizi Ashida , Makoto Morijiri , Masanori Tanabe , Hiroshi Fukui , Yutaka Sugita , Hiroshi Ikeda , Masaaki Hayashi , Kazuo Nakagoshi , Kanji Kawakami , Yokuo Saitoh , Shunichiro Kuwatsuka
CPC分类号： G11B5/3919 , G11B5/012 , G11B5/3116 , G11B5/313 , G11B5/3163 , G11B5/3903 , G11B5/3967
摘要： A magnetic head for reading from and/or writing to a magnetic information storage medium has a substrate on which a plurality of thin films are formed in sequence. The films provide a magnetic circuit having a magnetic gap, a bottom pole piece and a top pole piece overlying said bottom pole piece. The top pole piece is formed as a tip portion adjoining the magnetic gap and a rear portion which makes magnetic contact with the tip portion. The rear portion is formed in the sequence after the tip portion. To ensure accurate thickness and width of the tip portion, a non-magnetic protective film is formed on the tip portion after the tip portion is formed and before the rear portion is formed.
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公开(公告)号：US5316617A
公开(公告)日：1994-05-31
申请号：US57020
申请日：1993-05-05
申请人： Takashi Kawabe , Moriaki Fuyama , Shinji Narishige , Akira Onuma , Tetsuya Okai , Yutaka Sugita , Shin-ichi Hara
发明人： Takashi Kawabe , Moriaki Fuyama , Shinji Narishige , Akira Onuma , Tetsuya Okai , Yutaka Sugita , Shin-ichi Hara
IPC分类号： G11B5/31 , C04B41/53 , C04B41/91 , H01L21/302 , H01L21/3065 , B44C1/22 , C23F1/00
CPC分类号： C04B41/009 , C04B41/5338 , C04B41/91 , G11B5/3163 , C04B2111/00422 , Y10T29/49032
摘要： A thin film magnetic head comprising a substrate on which are successively formed a base layer, a lower magnetic film, a gap layer, an insulator layer, a conductor coil, an upper magnetic film, and a first mask, is manufactured by a method in which one or more of a gas which can be expressed by the general formula of CnHxFy (where n.gtoreq.1, x+y=2n+2, x>0, y>0, and x.gtoreq.y); and a gas which can be expressed by the general formula of CnHxFy (where n.gtoreq.1, x+y=2n+2, x.gtoreq.0, y.gtoreq.0, and x
摘要翻译： 通过以下方法制造薄膜磁头，该薄膜磁头依次形成基底层，下磁性膜，间隙层，绝缘体层，导体线圈，上磁性膜和第一掩模 其中一种或多种可由通式C n H x F y（其中n> / = 1，x + y = 2n + 2，x> 0，y> 0和x> / = y）表示的气体; 并且使用可以由CnHxFy（其中n> / = 1，x + y = 2n + 2，x> / = 0，y> / = 0和x
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公开(公告)号：US5241440A
公开(公告)日：1993-08-31
申请号：US908607
申请日：1992-06-29
申请人： Eizi Ashida , Moriaki Fuyama , Hideki Yamazaki , Shinji Narishige , Makoto Morijiri , Takashi Kawabe , Shunichiro Kuwatsuka , Saburo Suzuki , Eisei Togawa
发明人： Eizi Ashida , Moriaki Fuyama , Hideki Yamazaki , Shinji Narishige , Makoto Morijiri , Takashi Kawabe , Shunichiro Kuwatsuka , Saburo Suzuki , Eisei Togawa
IPC分类号： G11B5/31
CPC分类号： G11B5/313 , G11B5/3163
摘要： A thin film magnetic head including conductor coils, a plurality of insulating layers to interpose and insulate the conductor coils and a magnetic gap layer between upper and lower magnetic cores, in which another insulating layer is provided on a stepped region formed by end faces of the plurality of insulating layers.
摘要翻译： 一种薄膜磁头，包括导体线圈，多个绝缘层，用于将导体线圈插入并绝缘，以及在上下磁芯之间的磁隙层，其中另一绝缘层设置在由 多个绝缘层。
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6.发明授权Method for forming thin film pattern and method for fabricating thin film magnetic head using the same 失效用于形成薄膜图案的方法和使用其制造薄膜磁头的方法
公开(公告)号：US4971896A
公开(公告)日：1990-11-20
申请号：US280828
申请日：1988-12-07
申请人： Takashi Kawabe , Ataru Kobayashi , Moriaki Fuyama , Makoto Morijiri , Eiji Ashida , Masatoshi Tsuchiya , Tetsuya Okai , Masanobu Hanazono , Shinichi Hara , Shinji Narishige , Hiroshi Ikeda
发明人： Takashi Kawabe , Ataru Kobayashi , Moriaki Fuyama , Makoto Morijiri , Eiji Ashida , Masatoshi Tsuchiya , Tetsuya Okai , Masanobu Hanazono , Shinichi Hara , Shinji Narishige , Hiroshi Ikeda
CPC分类号： G11B5/3163 , G03F7/0035 , Y10S430/165
摘要： A method of forming a thin film pattern on a base having a step portion. This method comprises a first step of forming a thin film of given material on the base, a second step of forming a predetermined pattern of a first photoresist film on said thin film at one of a first portion including a lower part of the step portion and a second portion including an upper part of the step portion, a third step of forming a predetermined pattern of a second photoresist film on said thin film at the other of the first and second portions and a fourth step of applying ion-milling to said thin film of given material using masks said first and second photoresist film patterns formed on said thin film at the first and second portions.
摘要翻译： 在具有台阶部的基底上形成薄膜图案的方法。 该方法包括在基底上形成给定材料的薄膜的第一步骤，第二步骤，在包括台阶部分的下部的第一部分中的一个上形成在所述薄膜上的第一光致抗蚀剂膜的预定图案，以及 第二部分，包括台阶部分的上部;第三步骤，在所述第一和第二部分中的另一个上在所述薄膜上形成第二光致抗蚀剂膜的预定图案;以及第四步骤，将所述薄片 给定材料的膜使用掩模，所述第一和第二部分形成在所述薄膜上形成的第一和第二光致抗蚀剂图案。
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公开(公告)号：US5995338A
公开(公告)日：1999-11-30
申请号：US733713
申请日：1996-10-23
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.
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公开(公告)号：US06172859B2
公开(公告)日：2001-01-09
申请号：US08683978
申请日：1996-07-22
IPC分类号： G11B539
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/012 , G11B5/3903 , G11B5/3932 , G11B5/5526 , G11B5/59683 , G11B2005/3996
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 the longitudinal bias layer which comprises a hard magnetic thin film formed on an underlayer made of either of a ferromagnetic thin film having a body-centered cubic lattice crystal structure formed of body-centered cells, an amorphous ferromagnetic thin film or antiferromagnetic thin film having a body-centered cubic lattice crystal structure formed of body-centered cells.
摘要翻译： 巴克豪森噪声基本上被抑制并且再现变化最小化的磁阻头，并且已经提供了使用相同磁头的磁盘装置。 本发明的磁头和磁盘装置的特征在于提供纵向偏置层，其包括形成在由具有体心立方晶格晶体的铁磁性薄膜制成的底层上的硬磁薄膜 以身体为中心的细胞构成的结构，由身体中心细胞形成的体心立方晶格结构的非晶铁磁性薄膜或反铁磁性薄膜。
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公开(公告)号：US6157526A
公开(公告)日：2000-12-05
申请号：US450763
申请日：1999-11-30
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.
摘要翻译： 巴克豪森噪声基本上被抑制并且再现的变化最小化的磁阻头，并且已经提供了使用相同磁头的磁盘装置。 本发明的磁头和磁盘装置的特征在于提供一种纵向偏置层，其包括形成在由具有体心立方晶格结构结构的铁磁薄膜制成的底层上的硬磁薄膜 或具有体心立方晶格结构的非晶铁磁薄膜或反铁磁薄膜。
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公开(公告)号：US06693774B2
公开(公告)日：2004-02-17
申请号：US09803032
申请日：2001-03-12
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。
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