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1. 发明专利

JPS592221A Thin film magnetic head 失效
标题翻译：薄膜磁头
公开(公告)号：JPS592221A
公开(公告)日：1984-01-07
申请号：JP10993582
申请日：1982-06-28
申请人： Canon Inc
发明人： NIIMI AKIRA , HIRAI YUTAKA
IPC分类号： G11B5/39
CPC分类号： G11B5/3903
摘要： PURPOSE:To improve an S/N ratio and to decrease the induction of external noise, by forming magnetoresistance effect elements MR and thin film transistor circuit parts of a field effect type on an insulation substrate. CONSTITUTION:Integrated head parts 5 formed with MR head parts and thin film transistor circuit parts of a field effect type are formed on a substrate 4. The electrodes 9 on the conductive layers 3 connecting to both ends of MR elements 2 and the input sides of the thin film transistor circuit parts are electrically connected. Constant current is supplied to each element 2 from the thin film transistors Q1, Q2 of a field effect type. The resistance change of the MR element modulated by an external magnetic field is converted to the voltage change is amplified with an amplifier constituted of thin film transistors Q3- Q13 of a field effect type and is drawn out as an output to the outside. Since the MR element and a preamplifier are formed in extreme proximity to each other in the thin film magnetic field, the sectional area formed of the signal line connecting both is virtually negligible. As a result, the amt. of noise is considerably reduced and the S/N ratio of the reproduction signal is considerably improved.
摘要翻译：目的：通过在绝缘基板上形成磁阻效应元件MR和场效应薄膜晶体管电路部件来提高S / N比并降低外部噪声的感应。构成：形成有磁头效应型MR磁头部件和薄膜晶体管电路部件的集成头部5形成在基板4上。连接到MR元件2两端的导电层3上的电极9和薄膜晶体管电路部分电连接。从场效应型的薄膜晶体管Q1，Q2向每个元件2提供恒定电流。通过外部磁场调制的MR元件的电阻变化被转换为电压变化，由场效应型的薄膜晶体管Q3-Q13构成的放大器放大，并作为输出被输出到外部。由于MR元件和前置放大器在薄膜磁场中形成为彼此非常接近，所以连接两者的信号线形成的截面积几乎可以忽略不计。因此，amt。的噪声大大降低，并且再现信号的S / N比显着提高。

2. 发明专利

JPS5782778A Measuring method for magnetic anisotropy of magnetic thin film 失效
标题翻译：磁薄膜电磁异相测量方法
公开(公告)号：JPS5782778A
公开(公告)日：1982-05-24
申请号：JP15882280
申请日：1980-11-13
申请人： Canon Electronics Inc , Canon Inc
发明人： TAKAGI HIROTSUGU , NIIMI AKIRA , SAWADA TAKESHI , YONEDA HIROSHI , ABIKO SHIYUUZOU , GOTOU HIROICHI
IPC分类号： G01R33/12 , G11B5/39
CPC分类号： G01R33/12
摘要： PURPOSE:To measure the magnetic anisotropy of an MR element easily and securely by flowing a constant current to each magnetic thin film deposited on one substrate, and measuring a difference between resistance values before and after a DC magnetic field is applied. CONSTITUTION:A current (i) is flowed in the lengthwise direction of a rectangular MR element 1, and a DC magnetic field large enough to magnetize the MR element 1 to saturation is applied at an angle alpha to the current. In this case, magnetic thin films 3 are formed rectangularly by vapor deposition, sputtering, etc., while facing in every direction, and resistance values of each thin film 3 before and after the DC magnetic field is applied in the current direction are compare mutually. Then, the direction of the strip 3 having no resistance variation is an easy magnetization direction.
摘要翻译：目的：通过将恒定电流流向沉积在一个基板上的每个磁性薄膜，并测量施加直流磁场之前和之后的电阻值之间的差异，从而容易且可靠地测量MR元件的磁各向异性。构成：电流（i）在矩形MR元件1的长度方向上流动，并且以与电流成α角的方式施加足以使MR元件1磁化至饱和的DC磁场。在这种情况下，磁性薄膜3通过气相沉积，溅射等在每个方向上形成为矩形，并且在当前方向上施加直流磁场前后的每个薄膜3的电阻值相互比较。然后，没有电阻变化的条3的方向是容易的磁化方向。

3. 发明专利

JPS5780578A Magneto resistive thin film magnetic sensor with thermal compensation 失效
标题翻译： MAGNETO电感薄膜磁传感器，具有热补偿功能
公开(公告)号：JPS5780578A
公开(公告)日：1982-05-20
申请号：JP15706680
申请日：1980-11-10
申请人： Canon Electronics Inc , Canon Inc
发明人： SAWADA TAKESHI , YONEDA HIROSHI , NIIMI AKIRA , TAKAGI HIROTSUGU , ABIKO SHIYUUZOU , GOTOU HIROICHI
IPC分类号： G01R33/09 , G01R33/06
CPC分类号： G01R33/09
摘要： PURPOSE:To improve the temperature compensating function by arranging a magneto resistive (MR) element at a temperature compensating section non- parallel to an MR element at a detecting section in a magneto resistive thin film magnetic sensor with temperature compensation. CONSTITUTION:An MR element 3 at a temperature compensating section is arranged non-parallel, for example, roughly at the right angles with an MR element 2 at a detecting section. Both MR elements 2 and 3 have the magnetic anisotropy in the direction as indicated by the arrow 5. With such an arrangement, as the MR element 3 at the temperature compensating section will not be affected by any external signal magnetic field, the MR element 3 at the temperature compensating section is kept from picking up signal magnetic field, however both MR elements 2 and 3 may approach each other. Thus, the MR element 3 at the temperature compensating section has no sensitivity to the signal magnetic field thereby enabling smaller size and a higher temperature compensation accuracy.
摘要翻译：目的：通过在具有温度补偿的磁阻薄膜磁传感器中的检测部分处与MR元件非平行的温度补偿部分设置磁阻（MR）元件来提高温度补偿功能。构成：在温度补偿部分处的MR元件3例如在检测部分处与MR元件2大致成直角地布置成非平行。两个MR元件2和3都具有如箭头5所示的方向上的磁各向异性。通过这样的布置，由于温度补偿部分的MR元件3将不受任何外部信号磁场的影响，所以MR元件3 在温度补偿部分不保持拾取信号磁场，然而两个MR元件2和3可以彼此靠近。因此，温度补偿部分的MR元件3对信号磁场没有灵敏度，从而能够实现更小的尺寸和更高的温度补偿精度。

4. 发明专利

JPS5778612A Thin film magnetic head and its manufacture 失效
标题翻译：薄膜磁头及其制造
公开(公告)号：JPS5778612A
公开(公告)日：1982-05-17
申请号：JP15139280
申请日：1980-10-30
申请人： Canon Electronics Inc , Canon Inc
发明人： GOTOU HIROICHI , ABIKO SHIYUUZOU , NIIMI AKIRA , TAKAGI HIROTSUGU , SAWADA TAKESHI , YONEDA HIROSHI
IPC分类号： G11B5/29 , G11B5/31
CPC分类号： G11B5/3103 , G11B5/3163
摘要： PURPOSE:To make a track pitch dense and also to reduce a dead space on a recording medium, by forming an insulating layer on a part of a magnetic layer constituting a magnetic head, and laminating it like a layer through a winding, on a substrate. CONSTITUTION:Lower magnetic layers M2, M4 constituting a thin film magnetic head for each channel are formed on a substrate 10 by means of vapor-deposition and photoetching. Subsequently, on a part of them, an insulating layer is formed, and on said layer,each winding C2, C4 is formed spirally. Also, on each winding, an insulating layer if formed, and on this insulating layer, upper magnetic layers M2', M4' having the same material quality as th magnetic layers M2, M4 are formed respectively. After the insulating layer 11 has been formed on their whole surface, other magnetic head for each channel is formed on a different stage in the same way. In this way, since the track pitch is controlled to only the width W of each magnetic layer, the track pitch is made dense and a dead space on the recording medium is reduced.
摘要翻译：目的：通过在构成磁头的磁性层的一部分上形成绝缘层，通过绕组将层叠成层的方式，使轨道间距密集并减少记录介质上的死区，在基板上。构成：通过气相沉积和光蚀刻在基板10上形成用于每个沟道的构成薄膜磁头的低磁性层M2，M4。随后，在其一部分上形成绝缘层，并且在所述层上，每个绕组C2，C4被螺旋地形成。此外，在每个绕组上，如果形成绝缘层，并且在该绝缘层上分别形成具有与磁性层M2，M4相同的材料质量的上部磁性层M2'，M4'。在整个表面上形成绝缘层11之后，以相同的方式在不同的台上形成每个通道的其它磁头。以这种方式，由于磁道间距仅被控制到每个磁性层的宽度W，所以磁道间距变得密集，并且记录介质上的死空间减小。

5. 发明专利

JPS5774819A Magnetic resistance effect type reproducing head 失效
标题翻译：磁阻效应型复制头
公开(公告)号：JPS5774819A
公开(公告)日：1982-05-11
申请号：JP14834380
申请日：1980-10-24
申请人： Canon Electronics Inc , Canon Inc
发明人： SAWADA TAKESHI , GOTOU HIROICHI , ABIKO SHIYUUZOU , NIIMI AKIRA , YONEDA HIROSHI
IPC分类号： G11B5/39
CPC分类号： G11B5/398
摘要： PURPOSE:To prevent the generation of a magnetic noise, and to obtain the satisfactory reproduction, by connecting a magnetic detecting part and a lead wire part in series, forming them in one body simultaneously by use of a material having the same quality by a thin film deposition method, and placing a lead wire so as to have two parts by which direction of currents meet at right angles with each other. CONSTITUTION:When manufacturing a magnetic resistance effect type (MR) reproduction head, an MR element is constituted so that it is symmetrical, has a shape bent at right angles, a horizontal part of its one end is made to a magnetic detecting part 13 and has a continuous lead wire part such as a rising part 14 on both the end parts a horizontal part 15 being parallel to the detecting part 13, also a rising part 16, a horizontal part 17 and a rising part 18. The rising parts 14, 16 and 18 are varied in the direction of a current at right angles with the horizontal parts 15, 17. Moreover, the rising part 14 and the horizontal part 15 are made equal in length. The detecting part 13 and the lead wire parts 14-18 are formed by use of the same Ni-Co alloy, etc. and by means of film formation of once and photolithography of once. In this way, it is possible to obtain a head which is excellent in S/N ratio without being infulenced by a noise caused by a magnetic field from a motor, an electric power supply transformer, etc.
摘要翻译：目的：为了防止产生磁噪声，并且为了获得令人满意的再现，通过串联连接磁性检测部分和引线部分，通过使用具有相同品质的材料同时将其形成为一体并且将导线放置成具有彼此成直角相交的两个部分。构成：当制造磁阻效应型（MR）再现头时，MR元件构成为对称，具有直角弯曲的形状，其一端的水平部分被制成磁性检测部分13，在两端部具有平行于检测部13的水平部15，上升部16，水平部17和上升部18两端的连续的引线部，例如上升部14。 16和18在与水平部分15,17成直角的电流方向上变化。此外，使升高部分14和水平部分15的长度相等。检测部13和引线部14-18通过使用相同的Ni-Co合金等，并且通过一次的成膜和一次的光刻形成。以这种方式，可以获得不受来自电动机，电力供应变压器等的磁场引起的噪声的S / N比优异的磁头。

6. 发明专利

JPS5774807A Reproducing method of magnetic recording signal 失效
标题翻译：磁记录信号的再现方法
公开(公告)号：JPS5774807A
公开(公告)日：1982-05-11
申请号：JP15064580
申请日：1980-10-29
申请人： Canon Electronics Inc , Canon Inc
发明人： SAWADA TAKESHI , YONEDA HIROSHI , NIIMI AKIRA , TAKAGI HIROTSUGU , ABIKO SHIYUUZOU , GOTOU HIROICHI
IPC分类号： G11B5/02 , G11B5/39
CPC分类号： G11B5/39
摘要： PURPOSE:To make a device small-sized, by detecting a variation of amplitude or frequency by a signal magnetic field by use of a magnetic reluctance effect type magnetic head whose detecting current is AC, and reducing a decrease of a reproducing output, in a domestic VTR device, etc. CONSTITUTION:An MR head 20 constituted by use of a magnetic reluctance effect element is connected to one side of an AC bridge circuit 22 to which an AC signal of an AC oscillator 23 is applied, through a rotary transformer 21. To a part of the circut 22, an element 25 constituted of an inductance and a resistance for balancing the bridge is installed. Oscillation frequency of the circuit 23 is selected to about 12MHz since frequency of a magnetic field applied to the head 20 is 2-6MHz. According to such a constitution, a variation of a magnetic field applied to an element of the head 20 executes an amplitude modulation as a variation of AC impedance, and a reproducing signal with fidelity according to a recording signal is outputted from an amplifier 24. Since the amplitude or the frequency modulation is detected in this way, a decrease of a reproducing output is reduced, and a device is small-sized.
摘要翻译：目的：为了通过使用检测电流为AC的磁阻效应型磁头检测信号磁场的振幅或频率的变化，并且减小再现输出的减小，使装置小型化，国产VTR装置等。构成：通过使用磁阻效应元件构成的MR磁头20通过旋转变压器21连接到交流电桥电路22的一侧，交流电压振荡器23的交流信号通过旋转变压器21 对于环路22的一部分，安装由电感和用于平衡桥的电阻构成的元件25。由于施加到头20的磁场的频率为2-6MHz，电路23的振荡频率被选择为约12MHz。根据这样的结构，施加到头20的元件的磁场的变化执行作为AC阻抗的变化的幅度调制，并且从放大器24输出根据记录信号的保真度的再现信号。由于以这种方式检测幅度或频率调制，减少再现输出，并且设备尺寸小。

7. 发明专利

JPS5936319A Magneto-resistance effect type magnetic head 失效
标题翻译：磁阻效应型磁头
公开(公告)号：JPS5936319A
公开(公告)日：1984-02-28
申请号：JP14551882
申请日：1982-08-24
申请人： Canon Inc
发明人： TAKAGI HIROTSUGU , YAMAGATA IKUAKI , NIIMI AKIRA
IPC分类号： G11B5/39
CPC分类号： G11B5/3903
摘要： PURPOSE:To decrease the number of film forming processes and at the same time to shield effectively the leakage of magnetic flux from a medium which is not required for detection, by forming a shielding layer at the area near a magneto-resistance element excepting the effective sense part of the element. CONSTITUTION:A sense part (MR layer) 4 formed by an Ni(80%)-Fe(20%) alloy through an electron beam vapor deposition process, etc. is vapor deposited about 500Angstrom on a substrate 1 of glass, etc. A protecting film 5 of glass, etc. is adhered to the other side of the substrate 1. Then a rubbing surface is formed by the cylindrical grinding. A shielding layer 2 of ''Sendust'', etc. is vapor deposited with 0.5-1mum thickness on the entire rubbing surface by a sputtering process, etc. Then an opening part 7 having about 3mum width is formed at the position of the MR layer 4 by an etching process, etc. Thus the magnetic flux leaked out from a medium that is undesired for detection is effectively shielded by the shielding layer 2 formed on the head rubbing surface.
摘要翻译：目的：为了减少成膜工艺的数量，同时通过在磁阻元件附近的区域形成屏蔽层，有效屏蔽来自不需要检测的介质的磁通量的泄漏，除了有效的感觉元素的一部分。构成：通过电子束气相沉积法由Ni（80％） - Fe（20％）合金形成的感测部分（MR层）4在玻璃等的基板1上蒸发约500A。玻璃等的保护膜5粘附到基板1的另一侧。然后通过圆柱形研磨形成摩擦表面。通过溅射工艺等将整个摩擦表面上的“Sendust”等的屏蔽层2蒸镀0.5-1μm厚度。然后，在MR的位置形成具有约3μm宽度的开口部分7 层4等。因此，从不希望用于检测的介质泄漏的磁通被形成在头部摩擦表面上的屏蔽层2有效地屏蔽。

8. 发明专利

JPS5922231A Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：JPS5922231A
公开(公告)日：1984-02-04
申请号：JP12958082
申请日：1982-07-27
申请人： Canon Inc
发明人： NIIMI AKIRA , YAMAGATA IKUAKI , TAKAGI HIROTSUGU
IPC分类号： G11B5/72 , G11B5/82
CPC分类号： G11B5/72
摘要： PURPOSE:To equalize the influence of friction between the inner peripheral part and the external peripheral part, by forming a wear-resistant layer on a magnetic recording medium and adopting the structure increasing the thickness of the wear-resistant layer in the external peripheral direction. CONSTITUTION:It is defined that the radius of a track executing the magnetic recording and reproducing of a floppy disc 1 is r(mm.), recording frequency is f(HZ) and the rotating speed per minute of a disc is N(rpm). In addition, d0 and dx show inherent spacing and variable spacing respectively. When the relative loss is fixed and the value is (a), the variable spacing dx is expressed by the following equality. dx=(a.2pirN/54.6.5)-do. In other words, the formation of a recording medium obtained by forming a protective layer 2 as dx on the magnetic recording medium and changing the thickness of the layer 2 in the radius direction of the magnetic recording medium while keeping the relation shown by the equality makes it possible to attain magnetic recording and reproducing fixing the relative loss in the using range.
摘要翻译：目的：通过在磁记录介质上形成耐磨层并采用在外周方向上增加耐磨层的厚度的结构来均衡内周部与外周部之间的摩擦力的影响。规定：执行磁盘1的磁记录和再现的轨道的半径为r（mm），记录频率为f（HZ），并且盘的每分钟旋转速度为N（rpm）。此外，d0和dx分别显示固有间距和可变间距。当相对损耗固定且值为（a）时，可变间距dx由以下等式表示。 DX =（a.2pirN / 54.6.5）-DO。换句话说，形成通过在磁记录介质上形成保护层2作为dx而保持层2在磁记录介质的半径方向上的厚度同时保持相等关系所示的关系而获得的记录介质可以实现在使用范围内固定相对损失的磁记录和再现。

9. 发明专利

JPS58224429A Thin film integrated head 失效
标题翻译：薄膜集成头
公开(公告)号：JPS58224429A
公开(公告)日：1983-12-26
申请号：JP10683082
申请日：1982-06-23
申请人： Canon Inc
发明人： NIIMI AKIRA , YONEDA HIROSHI , SATOU HIDEAKI , SATOU TAMOTSU , KURIHARA IKUO
IPC分类号： G11B5/39
CPC分类号： G11B5/3903
摘要： PURPOSE:To reduce the induction of external noises, by forming a magneto- resistance effect element and an integrated circuit part for detecting and amplifying a magnetic signal from said element on the same silicon substrate and incorporating the silicon substrate into a head. CONSTITUTION:An insulating substrate 4 is formed by glass, quartz, alumina, ferrite, or the like, an integrated head 5 obtained by forming the MR element and the integrated circuit part on the silicon substrate is fixed on the substrate 4 and the magnetic recording medium side of the integrated head part 5 is covered with an insulating substrate 6 formed by glass or quartz. A lead wire 7 for connecting electrically between an insulated circuit formed on the integrated head part 5 and an external circuit is electrically coupled with the integrated head part 5 by wire bonding.
摘要翻译：目的：通过形成磁阻效应元件和集成电路部件来减少外部噪声的感应，用于在同一硅衬底上从所述元件检测和放大磁信号并将硅衬底并入头部。构成：通过玻璃，石英，氧化铝，铁氧体等形成绝缘基板4，将通过在硅基板上形成MR元件和集成电路部而获得的集成头5固定在基板4上，并将磁记录集成头部5的中间侧被由玻璃或石英形成的绝缘基板6覆盖。用于在形成在集成头部5上的绝缘电路与外部电路之间电连接的引线7通过引线接合与集成头部5电连接。

10. 发明专利

JPS5774821A Manufacture of magnetic resistance effect type magnetic head 失效
标题翻译：磁阻效应型磁头的制造
公开(公告)号：JPS5774821A
公开(公告)日：1982-05-11
申请号：JP14834580
申请日：1980-10-24
申请人： Canon Electronics Inc , Canon Inc
发明人： NIIMI AKIRA , TAKAGI HIROTSUGU , SAWADA TAKESHI , YONEDA HIROSHI , ABIKO SHIYUUZOU , GOTOU HIROICHI
IPC分类号： G11B5/31 , G11B5/39
CPC分类号： G11B5/3903 , G11B5/3106 , G11B5/3163
摘要： PURPOSE:To decrease a spacing loss remarkably, by temporarily joining a substrate and a protective plate, polishing the sliding surface, and after that, separating them, forming a thin film magnetic substance and a conductive material on the substrate side, and after that, joining the protective plate. CONSTITUTION:A protective plate 5 is temporarily joined with a nonmagnetic substance substrate 2 by use of an adhesive agent 10, and the sliding surface against a magnetic recording medium is polished. Subsequently, the protective plate 5 is detached from the substrate 2, is washed, and after that, a thin film magnetic substance 3, for instance, of 80% Ni-Fe alloy, etc. is formed on the substrate 2 by a thin film deposition method. After that, a conductive material such as Al , etc. to be connected to both ends of the magnetic substance 3 is formed, and after that, the protective plate 5 is joined with the substrate 2 by use of an adhesive agent. In the end, tape lapping is performed lightly and the sliding surface is prepared, by which a magnetic head is completed. In this way, no unevenness is caused on the end of the magnetic substance 3 of the sliding surface, a spacing loss against the magnetic recording medium surface is decreased, and it is possible to obtain a head which is excellent in a frequency characteristic and large in an magnetic field.
摘要翻译：目的：为了明显减小间隔损失，通过暂时接合基板和保护板，研磨滑动面，然后将其分离，在基板侧形成薄膜磁性物质和导电材料，之后，加入保护板。构成：通过使用粘合剂10将保护板5与非磁性物质基板2暂时接合，并且对磁性记录介质的滑动面进行抛光。接着，将保护板5与基板2分离，进行清洗，然后在基板2上通过薄膜形成例如80％Ni-Fe合金等的薄膜磁性体3 沉积法。之后，形成与磁性物质3的两端连接的Al等导电材料，之后，利用粘合剂将保护板5与基板2接合。最后，轻轻地进行胶带研磨，并准备滑动表面，由此完成磁头。以这种方式，在滑动面的磁性物质3的端部不产生不均匀性，相对于磁记录介质表面的间隔损失减小，并且可以获得频率特性优异且大的磁头在磁场中。

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