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    Method for preparing magnetic recording medium
    1.
    发明授权
    Method for preparing magnetic recording medium 失效
    磁记录介质的制备方法

    公开(公告)号：US4743467A

    公开(公告)日：1988-05-10

    申请号：US96203

    申请日：1987-09-08

    申请人： Ryuji Shirahata ,  Akio Yanai

    发明人： Ryuji Shirahata ,  Akio Yanai

    IPC分类号： G11B5/66 ,  C23C14/00 ,  C23C14/24 ,  G11B5/64 ,  G11B5/85 ,  H01F41/20 ,  H01F10/02

    CPC分类号： G11B5/85 ,  Y10S428/90

    摘要： A method of preparing a ferromagnetic recording medium is disclosed. The method includes charging a ferromagnetic material in an evaporator. The material is then irradiated with an electron beam having a beam current density of at least 0.1 A/cm.sup.2 in order to evaporate the material. The evaporated material is vapor deposited on a continuously travelling support in order to from the recording medium. The vapor deposition type magnetic recording medium produced has good metal film adhesion and durability.

    摘要翻译： 公开了制备铁磁记录介质的方法。 该方法包括在蒸发器中充入铁磁材料。 然后用具有至少0.1A / cm 2的束电流密度的电子束照射该材料，以便蒸发该材料。 将蒸发的材料气相沉积在连续行进的载体上，以便从记录介质中。 所制造的气相沉积型磁记录介质具有良好的金属膜附着力和耐久性。

    System of manufacturing magnetic recording media
    3.
    发明授权
    System of manufacturing magnetic recording media 失效
    磁记录介质制造系统

    公开(公告)号：US4511594A

    公开(公告)日：1985-04-16

    申请号：US459021

    申请日：1983-01-18

    申请人： Akio Yanai ,  Ryuji Shirahata

    发明人： Akio Yanai ,  Ryuji Shirahata

    IPC分类号： C23C14/30 ,  G11B5/85 ,  G11B5/851 ,  H01F41/20 ,  C23C13/08

    CPC分类号： G11B5/85 ,  G11B5/851 ,  H01F41/20

    摘要： A system of manufacturing a magnetic recording medium in which a magnetic metal or alloy is heated and evaporated by an electron beam gun so that vacuum-evaporated magnetic film is formed on a non-organic or organic macromolecular base. A plasma generating coil is disposed near an evaporating source and an electron beam passes through the hollow portion of the coil in preferably a direction coaxial with the axis of the coil. High frequency power is applied to the coil and vacuum deposition is carried out with a plasma generated thereby. The flow of vapor of magnetic metal or alloy is applied obliquely to the base and an oxidation gas is introduced into a vacuum container for forming the magnetic film.

    摘要翻译： 一种制造磁记录介质的系统，其中磁性金属或合金被电子束枪加热和蒸发，使得在非有机或有机高分子基底上形成真空蒸发的磁性膜。 等离子体产生线圈设置在蒸发源附近，并且电子束优选地通过线圈的中空部分优选地与线圈的轴线同轴的方向。 对线圈施加高频功率，并用等离子体进行真空沉积。 将磁性金属或合金的蒸气流倾斜地施加到基底，并将氧化气体引入用于形成磁性膜的真空容器中。

    Process for producing magnetic recording medium
    5.
    发明授权
    Process for producing magnetic recording medium 失效
    磁记录介质的制造方法

    公开(公告)号：US4604293A

    公开(公告)日：1986-08-05

    申请号：US788177

    申请日：1985-10-16

    申请人： Ryuji Shirahata ,  Akio Yanai

    发明人： Ryuji Shirahata ,  Akio Yanai

    IPC分类号： G11B5/85

    CPC分类号： G11B5/85

    摘要： A process for producing a magnetic recording medium comprising heating a magnetic material evaporation source with at least one scanning electron beam and depositing a vapor of a magnetic material emitted from the magnetic material evaporation source onto a non-magnetic substrate tape or web which is continuously moving in a vacuum atmosphere, the magnetic material evaporation source being disposed substantially parallel to the width direction of the non-magnetic substrate tape or web to form a magnetic thin film thereon, wherein the scanning frequency of the electron beams is about 2wv/n Hz or more, in which v m/min is the moving speed of the non-magnetic substrate; w m is the scanning width of the electron beams on said magnetic material evaporation source; and n is the number of the electron beams. The magnetic thin film magnetic recording medium has improved (dB/dH).sub.max and an excellent envelope of reproduced signals.

    摘要翻译： 一种制造磁记录介质的方法，包括用至少一个扫描电子束加热磁性材料蒸发源，并将从磁性材料蒸发源发射的磁性材料的蒸气沉积在连续移动的非磁性基材带或网上 在真空气氛中，磁性材料蒸发源设置成基本上平行于非磁性衬底带或网的宽度方向，以在其上形成磁性薄膜，其中电子束的扫描频率为约2wv / nHz或 更多，其中vm / min是非磁性基板的移动速度; w m是所述磁性材料蒸发源上的电子束的扫描宽度; n是电子束的数量。 磁性薄膜磁记录介质具有改善的（dB / dH）最大值和优异的再生信号包络。

    Magnetic recording medium
    8.
    发明授权
    Magnetic recording medium 失效
    磁记录介质

    公开(公告)号：US4661418A

    公开(公告)日：1987-04-28

    申请号：US439169

    申请日：1982-11-04

    申请人： Akio Yanai ,  Ryuji Shirahata

    发明人： Akio Yanai ,  Ryuji Shirahata

    IPC分类号： G11B5/66 ,  C08L67/02 ,  G11B5/64 ,  G11B5/73 ,  G11B5/85 ,  G11B5/851 ,  H01F10/10 ,  H01F41/20 ,  H01F10/02

    CPC分类号： H01F41/20 ,  G11B5/64 ,  G11B5/851 ,  H01F10/10 ,  H01F10/265 ,  Y10S428/90 ,  Y10T428/12458 ,  Y10T428/12465 ,  Y10T428/12646 ,  Y10T428/1266 ,  Y10T428/265

    摘要： A magnetic recording medium comprising a magnetic recording layer formed on a non-magnetic substrate by depositing a ferromagnetic metal or alloy on the substrate, the recording layer containing oxygen atoms in such a manner that the ratio thereof gradually reduces from the substrate side to the surface of the recording layer except the portion thereof very near to the surface thereof. The recording layer may comprise many deposited magnetic films, each containing oxygen atoms distributed as described above or uniformly in a ratio different from those in the other magnetic films. In the latter case, a magnetic film positioned nearer to the substrate contains a higher ratio of oxygen atoms.

    摘要翻译： 一种磁记录介质，包括通过在基板上沉积强磁性金属或合金而形成在非磁性基板上的磁记录层，所述记录层含有氧原子，使其比例从基板侧逐渐减小到表面 除了非常接近其表面的部分之外的记录层。 记录层可以包括许多沉积的磁性膜，每个磁性膜包含如上所述分布的氧原子或与其它磁性膜中的不同的比例均匀地分布。 在后一种情况下，位于更靠近衬底的磁性膜含有较高的氧原子比。

    Method of making magnetic recording medium
    10.
    发明授权
    Method of making magnetic recording medium 失效
    制造磁记录介质的方法

    公开(公告)号：US4477489A

    公开(公告)日：1984-10-16

    申请号：US413890

    申请日：1982-09-01

    申请人： Akio Yanai ,  Ryuji Shirahata ,  Tatsuji Kitamoto

    发明人： Akio Yanai ,  Ryuji Shirahata ,  Tatsuji Kitamoto

    IPC分类号： G11B5/851 ,  H01F10/02

    CPC分类号： G11B5/851

    摘要： In a method of making a magnetic recording medium by causing a flow of vapor obtained by evaporating a magnetic metal deposition material to impinge and deposit on a moving substrate at an oblique angle with respect to the moving substrate, the substrate is moved so that the incident angle of the vapor flow with respect to the substrate continuously changes from the maximum incident angle to the minimum incident angle, and an oxidizing gas is introduced in the vicinity of the substrate and near the maximum incident angle portion or the minimum incident angle portion of the vapor flow during the formation of a thin ferromagnetic film on the substrate. The maximum incident angle is preferably between 60.degree. and 90.degree., and the minimum incident angle between 30.degree. and 75.degree..

    摘要翻译： 在通过使磁性金属沉积材料蒸发而获得的蒸气流动相对于移动的衬底以倾斜角撞击并沉积在移动的衬底上来制造磁记录介质的方法中，衬底被移动，使得事件 蒸气流相对于基板的角度从最大入射角连续地变化到最小入射角，并且氧化气体被引入到基板附近并且在最大入射角部分或最小入射角部分附近 在衬底上形成薄铁磁膜期间的蒸汽流。 最大入射角优选在60°和90°之间，最小入射角在30°和75°之间。