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公开(公告)号：US4702935A
公开(公告)日：1987-10-27
申请号：US663128
申请日：1984-10-22
申请人： Masaru Kadono , Kumio Nago , Tatsushi Yamamoto , Tersuro Muramatsu , Shuuhei Tsuchimoto , Mitsuhiko Yoshikawa , Masatoshi Tomita
发明人： Masaru Kadono , Kumio Nago , Tatsushi Yamamoto , Tersuro Muramatsu , Shuuhei Tsuchimoto , Mitsuhiko Yoshikawa , Masatoshi Tomita
CPC分类号： H01F41/20 , C23C14/14 , C23C14/30 , H01F10/145
摘要： A production method for producing a high permeability alloy film which includes evaporating an alloy material composed of 1-6 wt % Al, 20-35 wt % Si, and the remainder of iron by irradiating the alloy with an electron beam, and then depositing the vapor from the alloy material onto a substrate for a predetermined time to produce an alloy film composition having a high permeability. The vapor deposition onto the substrate is preferably intercepted with the shutter until the concentration of aluminum of the vapor to be deposited has been decreased to a value between 20 and about 4 wt %.
摘要翻译： 一种高渗透性合金膜的制造方法，其特征在于，通过用电子束照射所述合金，蒸发由1〜6重量％的Al，20〜35重量％的Si和剩余的铁构成的合金材料， 将合金材料蒸镀到基板上一段预定时间以产生具有高磁导率的合金膜组合物。 基板上的气相沉积优选用快门截取，直到要沉积的蒸汽的铝浓度降低到20至约4wt％之间的值。
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公开(公告)号：US4592923A
公开(公告)日：1986-06-03
申请号：US664425
申请日：1984-10-24
CPC分类号： C23C14/14
摘要： A method for producing a high magnetic permeability alloy film, wherein an alloy material composed of 1-6 wt % Al, 20-35 wt % Si and the remainder of iron is irradiated with an electron beam in a vacuum deposition apparatus equipped with an electron gun, and the vapor of the alloy material is deposited on a substrate for a predetermined time to form a high magnetic permeability alloy film, comprising further a step of preventing the irregular deposition caused if the concentration of aluminum in the vapor to be deposited increases.
摘要翻译： 一种制造高磁导率合金膜的方法，其中在装有电子的真空沉积设备中用电子束照射由1-6重量％的Al，20-35重量％的Si和剩余的铁组成的合金材料 并且合金材料的蒸气在基板上沉积预定时间以形成高磁导率合金膜，还包括如果要沉积的蒸汽中的铝浓度增加而导致的不规则沉积步骤。
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公开(公告)号：US4735865A
公开(公告)日：1988-04-05
申请号：US871273
申请日：1986-06-06
CPC分类号： C22C38/02 , G11B5/147 , G11B5/3109 , G11B5/3163 , H01F10/145 , H01F41/20 , Y10T428/12458
摘要： Disclosed is a magnetic head core material having very high corrosion resistance even under severe conditions and a method for preparing the same. The material consists of 3 to 6 wt % of aluminum, 7 to 12 wt % of silicon, not more than 3 wt % of chromium and the substantial balance being iron.
摘要翻译： 公开了即使在恶劣条件下也具有非常高的耐腐蚀性的磁头芯材及其制备方法。 该材料由3至6重量％的铝，7至12重量％的硅，不超过3重量％的铬和基本平衡的铁组成。
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公开(公告)号：US4824539A
公开(公告)日：1989-04-25
申请号：US139823
申请日：1987-12-30
CPC分类号： G11B5/66 , G11B5/72 , Y10S428/90 , Y10T428/24967 , Y10T428/24975 , Y10T428/265
摘要： A Co-Cr perpendicular magnetic recording medium includes a chromium oxide film formed on a Co-Cr perpendicular magnetization film, and a SiO.sub.2 protective film formed on the chromium oxide film. The chromium oxide film is formed by conducting a heating treatment to the surface of the Co-Cr perpendicular magnetization film in an oxygen atmosphere of about 10 .sup.-4 to 10.sup.-3 Torr, at a temperature of about 300.degree. C. to 400.degree. C. for about two hours. The chromium oxide film has a thickness of about 20 to 200 .ANG.. The SiO.sub.2 protective film has a thickness greater than 50 .ANG., but the total thickness of the chromium oxide film and the SiO.sub.2 protective film is selected between 70 and 300 .ANG..
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公开(公告)号：US4816946A
公开(公告)日：1989-03-28
申请号：US110102
申请日：1987-10-15
CPC分类号： G11B5/3163
摘要： An improved method of manufacturing a thin film magnetic head, which includes the steps of forming an electrically conductive material coil layer on a substrate of a magnetic material, applying onto the electrically conductive material coil layer, an insulation layer of SiO.sub.2, Si.sub.3 N.sub.4, Al.sub.2 O.sub.3 and the like by sputtering, plasma chemical vapor deposition process, etc., and further forming a coating layer of SiO.sub.2 on the insulation layer by spin-coating process for flattening the upper surface of the insulation layer.
摘要翻译： 一种制造薄膜磁头的改进方法，其包括以下步骤：在磁性材料的基底上形成导电材料线圈层，将其施加到导电材料线圈层上，将SiO 2，Si 3 N 4，Al 2 O 3的绝缘层和 通过溅射等离子体化学气相沉积工艺等，并且通过旋涂法在绝缘层上进一步形成SiO 2涂层，以使绝缘层的上表面变平。
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公开(公告)号：US4725482A
公开(公告)日：1988-02-16
申请号：US685838
申请日：1984-12-24
CPC分类号： G11B5/66 , G11B5/72 , Y10S428/90 , Y10T428/24967 , Y10T428/24975 , Y10T428/265
摘要： A Co-Cr perpendicular magnetic recording medium includes a chromium oxide film formed on a Co-Cr perpendicular magnetization film, and a SiO.sub.2 protective film formed on the chromium oxide film. The chromium oxide film is formed by conducting a heating treatment to the surface of the Co-Cr perpendicular magnetization film in an oxygen atmosphere of about 10.sup.-4 to 10.sup.-3 Torr, at a temperature of about 300.degree. C. to 400.degree. C. for about two hours. The chromium oxide film has a thickness of about 20 to 200 .ANG.. The SiO.sub.2 protective film has a thickness greater than 50 .ANG., but the total thickness of the chromium oxide film and the SiO.sub.2 protective film is selected between 70 and 300 .ANG..
摘要翻译： Co-Cr垂直磁记录介质包括形成在Co-Cr垂直磁化膜上的氧化铬膜和形成在氧化铬膜上的SiO 2保护膜。 氧化铬膜通过在约10-4〜10-3乇的氧气氛中在约300℃〜400℃的温度下对Co-Cr垂直磁化膜的表面进行加热处理而形成 约两个小时。 氧化铬膜的厚度为约20至200安培。 SiO 2保护膜的厚度大于50，氧化铬膜和SiO 2保护膜的总厚度选择在70和300之间。
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7.发明授权Thin film magnetic head having a magnetized ferromagnetic film on the MR element 失效在MR元件上具有磁化铁磁膜的薄膜磁头
公开(公告)号：US4639806A
公开(公告)日：1987-01-27
申请号：US577389
申请日：1984-02-06
申请人： Toru Kira , Teiichi Miyauchi , Mitsuhiko Yoshikawa
发明人： Toru Kira , Teiichi Miyauchi , Mitsuhiko Yoshikawa
CPC分类号： G11B5/3903 , Y10S430/165
摘要： A thin film magnetic head for detecting, as a change in electric resistance, a change in signal magnetic field to be applied along the magnetization-hard-axis direction of a metal ferromagnetic thin film (MR element) having unit-axis anisotropy, which comprises a ferromagnetic film, which is sufficiently larger in coercive force than the metal ferromagnetic thin film, the ferromagnetic film being disposed on a superposed portion between a lead conductor portion and the metal ferromagnetic thin film (MR element), the metal ferromagnetic thin film (MR element) being coupled in ferromagnetic exchange (MR element) to the ferromagnetic film which is larger in coercive force. The ferromagnetic film is magnetized in a direction longitudinally of the MR element.
摘要翻译： 一种用于检测沿着具有单位轴各向异性的金属铁磁薄膜（MR元件）的磁化 - 硬轴方向施加的信号磁场的变化作为电阻的变化的薄膜磁头，其包括 强磁性膜的矫顽力比金属铁磁薄膜足够大，铁磁膜设置在引导导体部分和金属铁磁薄膜（MR元件）之间的叠置部分上，金属铁磁性薄膜（MR 元件）以铁磁交换（MR元件）耦合到矫顽力较大的铁磁膜。 铁磁膜沿着MR元件的纵向被磁化。
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公开(公告)号：US5155644A
公开(公告)日：1992-10-13
申请号：US688701
申请日：1991-04-22
申请人： Tohru Kira , Kozi Otsuka , Kazuyoshi Imae , Mitsuhiko Yoshikawa , Kengo Shiiba
发明人： Tohru Kira , Kozi Otsuka , Kazuyoshi Imae , Mitsuhiko Yoshikawa , Kengo Shiiba
CPC分类号： G11B5/3925 , G11B5/3113
摘要： The yoke thin film magnetic head according to the present invention includes yokes for leading the magnetic flux of signals generated from the magnetic recording medium up to the magnetic resistance effect element, which yokes are made of sputtered films having compressive stress therein. Therefore, the internal stress in the yokes which cause bad influences upon magnetic properties of the magnetic resistance effect element can be negated or reduced, with less Barkhausen noises produced.
摘要翻译： 根据本发明的磁轭薄膜磁头包括用于引导从磁记录介质产生的信号的磁通直到磁阻效应元件的磁轭，该磁轭由其中具有压应力的溅射膜制成。 因此，由于产生了较少的巴克豪森噪声，因此，可以否定或减少对磁阻效应元件的磁特性造成不良影响的磁轭中的内部应力。
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公开(公告)号：US4789910A
公开(公告)日：1988-12-06
申请号：US855934
申请日：1986-04-25
申请人： Kozi Otsuka , Tohru Kira , Kazuyoshi Imae , Mitsuhiko Yoshikawa
发明人： Kozi Otsuka , Tohru Kira , Kazuyoshi Imae , Mitsuhiko Yoshikawa
CPC分类号： G11B5/3903
摘要： A thin film magnetic head which comprises an end portion of a first yoke and an end portion of a second yoke confronting each other through a magnetic gap, and receiving from a recording surface or a recording medium, a magnetic signal, and a magnetic reluctance effect element disposed for magnetic coupling in the course of a magnetic path constituted by the first and second yokes. The thin film magnetic head is characterized in that the first yoke or magnetic reluctance effect element is formed on an application type SiO.sub.2 film which improves the surface roughness of the ground layer.
摘要翻译： 一种薄膜磁头，其包括第一磁轭的端部和通过磁隙相互面对的第二磁轭的端部，以及从记录表面或记录介质接收磁信号和磁阻效应 在由第一和第二轭构成的磁路的过程中设置用于磁耦合的元件。 薄膜磁头的特征在于，第一磁轭或磁阻效应元件形成在施加型SiO 2膜上，改善了接地层的表面粗糙度。
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公开(公告)号：US5252988A
公开(公告)日：1993-10-12
申请号：US628845
申请日：1990-12-11
申请人： Hiroyuki Katayama , Hiroshi Suzuki , Masato Kawanishi , Mitsuhiko Yoshikawa , Toshitaka Tamura , Takatoshi Mizoguchi , Hiromi Nishino , Akiyoshi Fujii , Takayuki Taminaga , Katsuyasu Deguchi
发明人： Hiroyuki Katayama , Hiroshi Suzuki , Masato Kawanishi , Mitsuhiko Yoshikawa , Toshitaka Tamura , Takatoshi Mizoguchi , Hiromi Nishino , Akiyoshi Fujii , Takayuki Taminaga , Katsuyasu Deguchi
CPC分类号： B41J2/3355 , B41J2/3357 , B41J2/3358 , H05K1/0201 , H05K1/16
摘要： A thermal head for a thermal recording machine including an insulating substrate which is composed of a printed circuit board made of a heat resistant resin and covered with a copper film, a plurality of thermal resistors disposed on the insulating substrate in the direction corresponding to the scanning, discrete electrodes electrically connecting first ends of the thermal resistors to a control element, a common electrode electrically connecting the other ends of the thermal resistors together, a heat releasing layer formed of the copper film of the insulating substrate on the lower portions of the thermal resistors, and a thermal accumulating layer of a polyimide resin covering the heat releasing layer.
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