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公开(公告)号：US4948626A
公开(公告)日：1990-08-14
申请号：US305050
申请日：1989-02-02
申请人： Tadashi Yasunaga , Koji Sasazawa , Akio Yanai
发明人： Tadashi Yasunaga , Koji Sasazawa , Akio Yanai
CPC分类号： G11B5/85
摘要： A method for producing a thin-film magnetic recording medium having an improved corrosion resistance and which permits production of the medium at a high speed. A magnetic material vapor flow from an evaporation source and a gas or ion flow are applied to a nonmagnetic base in an evaporation chamber and the two flows reacted with each other to form the thin-film magnetic layer on the nonmagnetic base. During this process, the expression P.sub.1 /P.sub.0 .ltoreq.0.1 is maintained, wherein P.sub.0 represents the degree of vacuum in the evaporation chamber, under a first condition where only the gas or ion flow is applied after the pressure in the chamber has been reduced to a predetermined degree of vacuum, and P.sub.1 represents the degree of vacuum in the chamber under a second condition where the magnetic material vapor flow is applied to the nonmagnetic base simultaneously with the gas or ion flow. The rate of formation of the thin-film magnetic layer is 200 .ANG./sec or more on the average.
摘要翻译： 一种制造具有改善的耐腐蚀性且允许高速生产介质的薄膜磁记录介质的方法。 来自蒸发源和气体或离子流的磁性材料蒸汽流被施加到蒸发室中的非磁性基底，并且两个流彼此反应以在非磁性基底上形成薄膜磁性层。 在该过程中，保持表达式P1 / P0 <0.1，其中P0表示蒸发室中的真空度，在第一条件下，在室中的压力已经减小之后仅施加气体或离子流 达到预定的真空度，P1表示在与气体或离子流同时向非磁性基底施加磁性材料蒸气流的第二状态下的室内的真空度。 平均薄膜磁性层的形成速度为200安培/秒以上。
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公开(公告)号：US4948422A
公开(公告)日：1990-08-14
申请号：US309552
申请日：1989-02-02
申请人： Akinori Yoshizawa , Tomoo Maeda , Masayuki Yamato
发明人： Akinori Yoshizawa , Tomoo Maeda , Masayuki Yamato
CPC分类号： G11B5/85 , B22F9/28 , G11B5/70605 , H01F1/065 , B22F2999/00
摘要： In the present invention, reaction is carried out between hydrogen gas and a metal halide vapor while supplying to the reacting region an active gas whose reactivity with the metal halide vapor is higher than the reactivity of the hydrogen gas with the metal halide vapor. The particular technique permits efficiently manufacturing a superfine magnetic metal powder of satisfactory properties while minimizing the amount of the hydrogen gas used.
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公开(公告)号：US4913933A
公开(公告)日：1990-04-03
申请号：US283904
申请日：1988-12-13
申请人： Yuji Kasanuki , Takayuki Yagi , Kenji Suzuki , Hiroshi Takagi
发明人： Yuji Kasanuki , Takayuki Yagi , Kenji Suzuki , Hiroshi Takagi
摘要： A method for preparing a magnetic recording medium comprises delivering a substrate from a delivery roller, passing the substrate through one or a plurality of conveying rollers and forming a magnetic recording layer on said substrate by the physical vapor deposition method in the course of running along the circumferential surface of a rotatory drum, characterized in that said substrate is heated between the delivery roller and the conveying roller or between a conveying roller and another conveying roller, and the conveying roller through which said substrate passes after heating is made an expander roller.
摘要翻译： 一种制备磁记录介质的方法，包括从输送辊输送基板，使基板通过一个或多个输送辊，并且在沿着沿着该方向运行的过程中通过物理气相沉积法在所述基板上形成磁记录层 旋转鼓的圆周表面，其特征在于，所述基底在输送辊和输送辊之间或输送辊与另一输送辊之间加热，加热后所述基板通过的输送辊成为膨胀辊。
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44.发明授权Magnetic recording medium method for producing the same, and method for recording and reproduction using the same and magnetic head 失效用于制造该磁记录介质的磁记录介质方法，以及使用该磁记录介质的方法和磁头
公开(公告)号：US4865916A
公开(公告)日：1989-09-12
申请号：US77097
申请日：1987-07-22
CPC分类号： G11B5/00 , G11B5/1278 , G11B5/187 , G11B5/66 , G11B5/72 , G11B5/85 , Y10S428/90 , Y10S428/928 , Y10T428/12611 , Y10T428/265 , Y10T428/31
摘要： A thin film type magnetic recording medium having a durability close to that of the coating type magneting recording medium is provided by a metal oxide protective layer which is formed by a physical vapor deposition.
摘要翻译： 通过由物理气相沉积形成的金属氧化物保护层提供具有接近涂层型放电记录介质的耐久性的薄膜型磁记录介质。
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公开(公告)号：US4810347A
公开(公告)日：1989-03-07
申请号：US170753
申请日：1988-03-21
申请人： James F. Smith
发明人： James F. Smith
CPC分类号： H01J37/3452 , C23C14/3407 , H01J37/3408 , H01J37/3458
摘要： A sputter coating system utilizing a Penning type cathode. Inner and outer targets are concentrically oriented about an axis that intersects a substrate spaced from the targets. An electromagnet produces a magnetic field in a region between the substrate and the targets that confines a plasma of ions relative the targets. An annular anode that separates the two targets helps create an electric field that accelerates ions from the plasma to the targets where collisions between the ions and targets cause target material to sputter coat the substrate.
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公开(公告)号：US4729805A
公开(公告)日：1988-03-08
申请号：US895322
申请日：1986-08-11
CPC分类号： G11B23/005 , G11B5/825 , Y10S428/90 , Y10S428/91
摘要： Stretched surface recording disk (SD) 10 comprises an annular support 12 having raised annular ridges 42 and 28 at its inside and outside diameters 22 and 30 with a base portion 24 in between the two ridges, and an annular recording medium film 14 held in radial tension and stretched across the base portion by adhering the film to attachment surfaces 48 and 36 near the inside and outside diameters respectively. The SD is annealed twice during manufacture to relieve stress in the stretched film 14. This annealing results in SD essentially free from track anisotropy and stress distribution anisotropy in the plane of the disk. As a result, data tracks are more stable than in previous SD, track density can be greater, and the SD is generally more reliable.
摘要翻译： 拉伸表面记录盘（SD）10包括环形支撑件12，该环形支撑件12在其内部和外部直径22和30处具有凸起的环形脊42和28，其中基部24位于两个脊之间，并且环形记录介质膜14保持在径向 通过将膜粘附到附近表面48和36附近的内径和外径上，张紧并拉伸穿过基部。 SD在制造过程中退火两次以减轻拉伸膜14中的应力。该退火导致SD基本上不含圆盘平面内的轨道各向异性和应力分布各向异性。 因此，数据轨道比以前的SD更稳定，轨道密度可以更大，SD通常更可靠。
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公开(公告)号：US4726988A
公开(公告)日：1988-02-23
申请号：US713463
申请日：1985-03-19
CPC分类号： G11B5/85 , G11B5/64 , Y10S428/90 , Y10T428/249956 , Y10T428/268 , Y10T428/31544
摘要： A vertical magnetic recording medium comprising a substrate and a magnetic layer formed on the substrate and having a magnetic anisotropy in the direction vertical to the surface of the substrate is described. The magnetic layer is composed substantially of a metal selected from cobalt and/or iron, and an oxide of the metal. The metal and metal oxide consist of columnar structures oriented in the direction vertical to the surface of the substrate and spaced from one another through fine voids throughout the magnetic layer. The columnar structures have a diameter of 100 to 1000 .ANG. and the magnetic layer have a void ratio of to 56%. The vertical magnetic recording medium is prepared by a process for vacuum-depositing a metal selected from cobalt and iron to form a magnetic layer on a substrate, wherein an oxygen gas and at least one gas chemically inactive in the vacuum deposition system, which is selected from nitrogen, argon, helium, neon, xenon, radon, methane and ethane, are introduced into the vacuum to an extent such that the pressure in the vicinity of the substrate is 1.times.10.sup.-3 to 5.times.10.sup.-2 Torr.
摘要翻译： 描述了一种垂直磁记录介质，其包括在基板上形成的基板和磁性层，并且在垂直于基板表面的方向上具有磁各向异性。 磁性层基本上由选自钴和/或铁的金属和金属的氧化物组成。 金属和金属氧化物由垂直于衬底表面的方向定向的柱状结构构成，并且在整个磁性层中通过细小的空隙彼此间隔开。 柱状结构的直径为100〜1000，磁性层的空隙率为56％。 垂直磁记录介质通过真空沉积选自钴和铁的金属的方法制备，以在基板上形成磁性层，其中选择氧气和至少一种在真空沉积系统中化学惰性的气体，其被选择 从氮气，氩气，氦气，氖气，氙气，氡气，甲烷和乙烷引入到真空中使得衬底附近的压力为1×10 -3至5×10 -2乇的程度。
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公开(公告)号：US4724156A
公开(公告)日：1988-02-09
申请号：US901976
申请日：1986-09-02
CPC分类号： G11B5/85 , G11B5/70615
摘要： In manufacturing a magnetic recording medium, a flow of iron vapor is formed in a nitrogen atmosphere and iron vapor particles in the flow of iron vapor are deposited on a non-magnetic substrate together with nitrogen particles to form an iron nitride film thereon. Before deposition on the non-magnetic substrate, the nitrogen particles are ionized by an ion beam generating means and the iron vapor particles are ionized by a high-frequency discharge.
摘要翻译： 在制造磁记录介质时，在氮气气氛中形成铁蒸气流，铁蒸汽流中的铁蒸气颗粒与氮颗粒一起沉积在非磁性基板上，以在其上形成氮化铁膜。 在非磁性基板上沉积之前，通过离子束产生装置将氮颗粒离子化，并通过高频放电使铁蒸气颗粒离子化。
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公开(公告)号：US4717584A
公开(公告)日：1988-01-05
申请号：US826386
申请日：1986-02-05
申请人： Masaki Aoki , Hideo Torii , Hideyuki Okinaka , Masayuki Sakai
发明人： Masaki Aoki , Hideo Torii , Hideyuki Okinaka , Masayuki Sakai
CPC分类号： G11B5/85 , H01F10/20 , H01F10/205 , H01F41/22
摘要： An organic metal compound containing elements constituting a magnetic material and an oxygen gas are introduced into plasmas at a low pressure and a thin film of magnetic oxide is prepared on an organic film or aluminum at low temperature.
摘要翻译： 将含有构成磁性材料和氧气的元素的有机金属化合物以低压引入等离子体中，在低温下在有机膜或铝上制备磁性氧化物薄膜。
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公开(公告)号：US4661421A
公开(公告)日：1987-04-28
申请号：US906008
申请日：1986-09-11
CPC分类号： G11B5/85 , G11B5/7305 , Y10S428/90
摘要： A method is described for preparing a magnetic recording medium by vapor-depositing a magnetic metal thin film on a polyester film, which comprises winding up a polyester film while subjecting the polyester film to a tension of from 0.1 to 2.0 kg/mm.sup.2, heating the resulting polyester film roll at 60.degree. C. to 80.degree. C. for from 10 to 100 hours, and vapor-depositing a magnetic thin film onto the polyester film while subjecting the polyester film to a tension of 0.5 kg/mm.sup.2 or more.
摘要翻译： 描述了一种用于通过在聚酯膜上气相沉积磁性金属薄膜来制备磁记录介质的方法，该方法包括在聚酯薄膜经受0.1至2.0kg / mm 2的张力的同时卷绕聚酯薄膜，加热 得到的聚酯薄膜在60℃至80℃下进行10至100小时，并在将聚酯薄膜施加0.5kg / mm 2以上的张力的同时将磁性薄膜气相沉积在聚酯薄膜上。
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