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1.发明授权Thin-film magnetic head having special input/output terminal backing connection and method of fabricating the same 失效具有特殊输入/输出端子背衬连接的薄膜磁头及其制造方法
公开(公告)号：US4949209A
公开(公告)日：1990-08-14
申请号：US231505
申请日：1988-08-12
IPC分类号： G11B5/31
CPC分类号： G11B5/3106 , G11B5/313
摘要： In a thin-film magnetic head having a magnetic core (upper magnetic layer), in the electromagnetic conversion section, which are composed of an upper first magnetic film, inorganic insulating film, and an upper second magnetic film, the upper first magnetic film is used as a second wiring for electrical continuity between the coil and input/output terminal. The upper first magnetic film is connected to the center of a coil which is of a single-layer structure. The first upper magnetic film is made of a same material as the coil and is formed simultaneously with the latter. In the region in which an input/output terminal backing is formed, the upper first magnetic film of a second wiring is removed. Thus, the electrical continuity is established between the input/output terminal and the center of the coil.Also, the utilization of the upper first magnetic film as second wiring is applicable to a thin-film magnetic head having a coil of a multi-layer structure.
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公开(公告)号：US5307214A
公开(公告)日：1994-04-26
申请号：US848137
申请日：1992-03-09
申请人： Kanji Kawakami , Yoshiakira Karakama , Masayuki Takagi , Takayoshi Ohtsu , Hisayasu Honma , Tetsuo Kobayashi , Yutaka Sugita , Katsuya Mitsuoka
发明人： Kanji Kawakami , Yoshiakira Karakama , Masayuki Takagi , Takayoshi Ohtsu , Hisayasu Honma , Tetsuo Kobayashi , Yutaka Sugita , Katsuya Mitsuoka
摘要： A magnetic recording apparatus for recording information on a magnetic recording medium. A circuit for generates a recording current pulse train and supplies the pulse train to a magnetic head. The last pulse of the recording current pulse train dampled waveform. A ripple current is superposed on the damped waveform.
摘要翻译： 一种用于在磁记录介质上记录信息的磁记录装置。 一种用于产生记录电流脉冲串并将脉冲串提供给磁头的电路。 记录电流脉冲序列的最后脉冲波形波形。 纹波电流叠加在阻尼波形上。
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3.发明授权Compound magnetic head having a recording head and a reproducing magnetoresitive head integrated therein 失效具有集成在其中的记录头和再现磁电磁头的复合磁头
公开(公告)号：US5079662A
公开(公告)日：1992-01-07
申请号：US413329
申请日：1989-09-27
申请人： Kanji Kawakami , Yokuo Saitoh , Tetsuo Kobayashi , Takayoshi Ohtsu , Hiroshi Fukui , Yamagata, deceased, Koji , by Tetsuji Yamagata, legal representative , by Reiko Yamagata, legal representative
发明人： Kanji Kawakami , Yokuo Saitoh , Tetsuo Kobayashi , Takayoshi Ohtsu , Hiroshi Fukui , Yamagata, deceased, Koji , by Tetsuji Yamagata, legal representative , by Reiko Yamagata, legal representative
CPC分类号： G11B5/3967 , G11B5/332
摘要： A compound magnetic head includes first and second magnetic poles arranged to face each other to define a recording gap therebetween, a magnetic film arranged between the first and second magnetic poles, a first non-magnetic film arranged between the first magnetic pole and the magnetic film to define a first reproducing gap therebetween, and a second non-magnetic film arranged between the second magnetic pole and the magnetic pole to define a second reproducing gap therebetween. The recording gap and the first and second reproducing gaps have the same width and a common center line of the gap widths parallel to the direction of movement of a magnetic recording medium.
摘要翻译： 复合磁头包括布置成彼此面对以限定它们之间的记录间隙的第一和第二磁极，布置在第一和第二磁极之间的磁性膜，布置在第一磁极和磁性膜之间的第一非磁性膜 以限定它们之间的第一再现间隙，以及布置在第二磁极和磁极之间的第二非磁性膜，以在它们之间限定第二再现间隙。 记录间隙和第一和第二再现间隙具有与磁记录介质的移动方向平行的间隙宽度相同的宽度和公共中心线。
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4.发明授权Large capacity magnetic disc apparatus with a particular relationship between pole thickness, saturated flux density, and recording wavelength 失效大容量磁盘装置，其磁极厚度，饱和磁通密度和记录波长之间具有特定关系
公开(公告)号：US5671107A
公开(公告)日：1997-09-23
申请号：US399221
申请日：1995-03-06
申请人： Katsuya Mitsuoka , Hiroshi Fukui , Makoto Aihara , Masanori Tanabe , Moriaki Fuyama , Shinji Narishige , Yutaka Sugita , Yoshihiro Shiroishi , Hajime Aoi , Yokuo Saitoh , Kanji Kawakami , Yoshikazu Tsuji , Masaaki Hayashi , Kazuo Nakagoshi
发明人： Katsuya Mitsuoka , Hiroshi Fukui , Makoto Aihara , Masanori Tanabe , Moriaki Fuyama , Shinji Narishige , Yutaka Sugita , Yoshihiro Shiroishi , Hajime Aoi , Yokuo Saitoh , Kanji Kawakami , Yoshikazu Tsuji , Masaaki Hayashi , Kazuo Nakagoshi
摘要： A magnetic disc apparatus has a large recording density of 120 megabits per square inch or more, and defines a relationship among a pole thickness (Pt) of thin-film magnetic heads disposed in the magnetic disc apparatus, and a saturation flux density (Bs) of cores of the heads and a recording wavelength (.lambda.) for the thin film magnetic discs have a coercivity of 1800 Oe or more, wherein a levitation space between the head and the disc is 0.15 .mu.m or less.
摘要翻译： 磁盘装置具有120兆比特每平方英寸或更大的记录密度，并且限定了设置在磁盘装置中的薄膜磁头的极厚度（Pt）与饱和磁通密度（Bs）之间的关系， 的磁头的磁芯和用于薄膜磁盘的记录波长（λ）具有1800Oe或更高的矫顽力，其中磁头和磁盘之间的悬浮空间为0.15μm或更小。
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公开(公告)号：US5251083A
公开(公告)日：1993-10-05
申请号：US895134
申请日：1992-06-08
申请人： Yoshinori Takeuchi , Yuzo Yamaguchi , Fumitaka Muranushi , Katsuyuki Tanaka , Kanji Kawakami , Hiroshi Daito , Tetsuo Masukawa
发明人： Yoshinori Takeuchi , Yuzo Yamaguchi , Fumitaka Muranushi , Katsuyuki Tanaka , Kanji Kawakami , Hiroshi Daito , Tetsuo Masukawa
IPC分类号： G11B5/60
CPC分类号： G11B5/6005
摘要： A flying head slider has a slider body in which gas bearing rails are formed on a surface thereof disposed in opposed relation to a recording medium. A bleed portion is also provided at the surface of the slider body between a pair of gas bearing rails. The bleed portion is composed of at least a rectangular-shaped deep bleed portion in which the pair of longer sides thereof are directioned in parallel to the longitudinal axis direction of the gas bearing rails.
摘要翻译： 飞头滑块具有滑块体，气体轴承轨道形成在与记录介质相对设置的表面上。 泄放部分还设置在滑块体的表面之间的一对气体支承导轨之间。 排出部分由至少一个长方形的深部排出部分组成，其中一对长边方向与气体支承轨道的纵轴方向平行。
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公开(公告)号：US4861398A
公开(公告)日：1989-08-29
申请号：US123278
申请日：1987-11-20
申请人： Hirotsugu Fukuoka , Kanji Kawakami , Makoto Aihara , Mitsuo Suda , Kouji Takeshita , Yukihiro Isono
发明人： Hirotsugu Fukuoka , Kanji Kawakami , Makoto Aihara , Mitsuo Suda , Kouji Takeshita , Yukihiro Isono
CPC分类号： G11B5/3166 , G11B5/455 , Y10T29/49036 , Y10T29/49044 , Y10T29/49046
摘要： DC bias currents are applied to a conducting wire of a thin film magnetic head to be inspected. When the DC bias currents (I.sub.0, I.sub.1, I.sub.2) are supplied to the conducting wire, the impedances (Z.sub.0, Z.sub.1, Z.sub.2) corresponding to the DC bias currents are measured. When a ratio (.vertline.Z.sub.1 -Z.sub.0 .vertline./.vertline.Z.sub.2 -Z.sub.0 .vertline.) corresponding to an overwrite characteristic (OW) reaches to a predetermined value by lapping tip portions of an upper magnetic layer and a lower magnetic layer of the magnetic head, the lapping process of the magnetic head is finished.
摘要翻译： 将直流偏置电流施加到待检查的薄膜磁头的导线上。 当直流偏置电流（I0，I1，I2）被提供给导线时，测量对应于直流偏置电流的阻抗（Z0，Z1，Z2）。 当通过研磨磁头的上部磁性层和下部磁性层的尖端部分而将与覆盖特性（OW）相对应的比率（| Z1-Z0 | / | Z2-Z0））达到预定值时，研磨 磁头的处理完成。
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公开(公告)号：US4670969A
公开(公告)日：1987-06-09
申请号：US694990
申请日：1985-01-25
申请人： Kazuji Yamada , Yutaka Kobayashi , Kanji Kawakami , Satoshi Shimada , Masanori Tanabe , Shigeyuki Kobori
发明人： Kazuji Yamada , Yutaka Kobayashi , Kanji Kawakami , Satoshi Shimada , Masanori Tanabe , Shigeyuki Kobori
IPC分类号： H01L29/84 , G01L9/00 , G01P15/08 , H01L21/428
CPC分类号： G01L9/0042 , G01P15/0802 , G01P2015/084 , Y10S148/012 , Y10S148/159 , Y10S148/168 , Y10T29/42 , Y10T29/49103
摘要： A method of making a silicon diaphragm pressure sensor includes forming an oxide film on one surface of a monocrystalline silicon substrate. A polycrystalline silicon layer is formed on the oxide film. The oxide film may be partly removed before the formation of the polycrystalline silicon layer. The polycrystalline silicon layer is heated and melt to recrystallize the same, thereby converting the polycrystalline silicon layer into a monocrystalline silicon layer. On the monocrystalline silicon layer may be epitaxially grown an additional monocrystalline silicon layer. By using the oxide film as an etching stopper, a predetermined portion of the substrate is etched over a range from the other surface of the substrate to the oxide film, thereby providing a diaphragm of the pressure sensor.
摘要翻译： 制造硅膜压力传感器的方法包括在单晶硅衬底的一个表面上形成氧化膜。 在氧化物膜上形成多晶硅层。 在形成多晶硅层之前可以部分地去除氧化膜。 将多晶硅层加热熔化，使其重结晶，从而将多晶硅层转化为单晶硅层。 在单晶硅层上可以外延生长另外的单晶硅层。 通过使用氧化膜作为蚀刻停止层，在从衬底的另一个表面到氧化膜的范围内蚀刻衬底的预定部分，从而提供压力传感器的隔膜。
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公开(公告)号：US4511878A
公开(公告)日：1985-04-16
申请号：US534076
申请日：1983-09-20
CPC分类号： G01L9/0054 , G01L19/147 , Y10S73/04
摘要： Provided is a pressure sensor of semiconductor type, having a semiconductor diaphragm, wherein the diaphragm comprises at least one of thin wall parts and at least one of thick wall parts, and defines therein recesses formed in the lower surface of the diaphragm below the thin wall parts, piezoresistance elements are laid on the upper surface of the diaphragm near the thin wall parts, and a supporting member is sealingly jointed to the thick wall parts at the lower surface of the diaphragm, so that the recesses are sealed and confined so as to prevent high pressure fluid from blowing off when the thin wall part is broken.
摘要翻译： 提供一种具有半导体膜片的半导体型压力传感器，其中隔膜包括薄壁部分和至少一个厚壁部分中的至少一个，并且在其中限定形成在薄壁下方的隔膜的下表面中的凹部 零件，压阻元件放置在薄壁部分附近的隔膜的上表面上，并且支撑构件与隔膜的下表面的厚壁部分密封地接合，使得凹部被密封和限制，以便 当薄壁部分破裂时，防止高压液体吹走。
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公开(公告)号：US4604899A
公开(公告)日：1986-08-12
申请号：US597753
申请日：1984-04-06
申请人： Kazuji Yamada , Hideo Sato , Kanji Kawakami , Kazuo Kato , Takao Sasayama
发明人： Kazuji Yamada , Hideo Sato , Kanji Kawakami , Kazuo Kato , Takao Sasayama
CPC分类号： G01L1/2281 , G01L9/065
摘要： A semiconductor-type pressure transducer is disclosed in which the pressure change is detected as a resistance change by use of a bridge circuit including at least a gauge resistor changing with an external force. Each gauge resistor is made of a PN junction of a semiconductor. The pressure transducer further comprises an amplification factor compensator for cancelling the effect of the temperature change of the gauge resistors making up the bridge circuit on the amplification factor of the amplification circuit for amplifying the output of the bridge circuit.
摘要翻译： 公开了一种半导体型压力传感器，其中通过使用至少包括用外力改变的量规电阻器的桥式电路将压力变化检测为电阻变化。 每个规格电阻由半导体的PN结制成。 压力传感器还包括放大系数补偿器，用于抵消构成桥式电路的量规电阻器的温度变化对放大电路的放大系数的影响，用于放大桥式电路的输出。
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10.发明授权Constant current source device having a ratio metricity between supply voltage and output current 失效恒流源装置具有电源电压和输出电流之间的比率
公开(公告)号：US4591780A
公开(公告)日：1986-05-27
申请号：US559467
申请日：1983-12-08
申请人： Kazuji Yamada , Ryoichi Kobayashi , Yasuo Nagai , Isao Shimizu , Kanji Kawakami
发明人： Kazuji Yamada , Ryoichi Kobayashi , Yasuo Nagai , Isao Shimizu , Kanji Kawakami
摘要： A current source device controls a rate of change of current flowing through a load so that the change rate of the current is equal to a change rate of a fluctuating supply voltage. A first transistor is fed with the supply voltage via a first resistor connected to its collector and a second resistor connected to its emitter. A second transistor has a base connected to a base of the first transistor, an emitter connected to a third resistor and a collector connected to a load. A current to the load is fed from the supply voltage via the load, the collector and emitter of the second transistor and the third resistor. The collector and base of the first transistor are respectively connected to a base and an emitter of a third transistor having a collector fed with the supply voltage. The ratio between a voltage drop caused across the second resistor by a reference current flowing through the first resistor, the collector and emitter of the first transistor and the second resistor, and a voltage drop caused across the third resistor by an emitter current of the second transistor, which is substantially equal to a collector current of the second transistor flowing through the load, is set to a predetermined value. The emitter area of the second transistor is enlarged beyond that of the first transistor to obtain a sufficiently large output current.
摘要翻译： 电流源装置控制流过负载的电流的变化率，使得电流的变化率等于电源电压波动的变化率。 第一晶体管经由连接到其集电极的第一电阻器和连接到其发射极的第二电阻器馈送电源电压。 第二晶体管具有连接到第一晶体管的基极的基极，连接到第三电阻器的发射极和连接到负载的集电极。 通过负载，第二晶体管的集电极和发射极以及第三电阻从供电电压馈送到负载的电流。 第一晶体管的集电极和基极分别连接到具有馈送有电源电压的集电极的第三晶体管的基极和发射极。 通过流过第一电阻器的参考电流，第一晶体管的集电极和发射极以及第二电阻器在第二电阻器之间引起的电压降之间的比率以及由第二电阻器的发射极电流引起的第三电阻器的电压降 基本上等于流过负载的第二晶体管的集电极电流的晶体管被设定为预定值。 第二晶体管的发射极面积比第一晶体管的发射极面积增大，以获得足够大的输出电流。
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