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公开(公告)号：US5759617A
公开(公告)日：1998-06-02
申请号：US825628
申请日：1997-03-31
申请人： Ryoichi Mukai
发明人： Ryoichi Mukai
CPC分类号： G11B5/84
摘要： The present invention discloses a production process for a hard disk magnetic recording medium in which post-annealing is performed after vacuum deposition of a non-magnetic base layer and magnetic metal polycrystalline layer on a substrate without forming a protective layer and without destroying the vacuum.
摘要翻译： 本发明公开了一种用于硬盘磁记录介质的制造方法，其中在不形成保护层并且不破坏真空的情况下在非磁性基层和磁性金属多晶层真空沉积基板之后进行后退火。
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公开(公告)号：US5750209A
公开(公告)日：1998-05-12
申请号：US718231
申请日：1996-09-20
申请人： Tetsuo Samoto
发明人： Tetsuo Samoto
CPC分类号： C23C14/562 , C23C16/545 , G11B5/85
摘要： There are disclosed method and apparatus for producing a magnetic recording medium including a non-magnetic substrate, a magnetic layer formed on one surface of said non-magnetic substrate and a back coat layer formed on an opposite surface of said non-magnetic substrate. By using the method and the apparatus, the magnetic recording medium having the back coat layer, which exhibits a high lubricating property and a low dynamic friction coefficient, can be produced with a high operating efficiency. The method includes the steps of forming the back coat layer by a plasma chemical vapor deposition and supplying a lubricant, substantially at the time when the back coat layer is formed by the plasma chemical vapor deposition, such that the lubricant is introduced into the back coat layer.
摘要翻译： 公开了用于制造包括非磁性基板的磁记录介质的方法和装置，形成在所述非磁性基板的一个表面上的磁性层和形成在所述非磁性基板的相对表面上的背涂层。 通过使用该方法和装置，可以以高的运行效率制造出具有高润滑性和低动摩擦系数的具有背涂层的磁记录介质。 该方法包括以下步骤：基本上通过等离子体化学气相沉积形成背涂层，通过等离子体化学气相沉积形成背涂层并供应润滑剂，使得润滑剂被引入后盖 层。
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23.发明授权
公开(公告)号：US5700593A
公开(公告)日：1997-12-23
申请号：US206849
申请日：1994-03-07
申请人： Yoshinobu Okumura , Xingbo Yang
发明人： Yoshinobu Okumura , Xingbo Yang
CPC分类号： G11B5/732 , G11B5/656 , G11B5/7325 , Y10S428/90 , Y10S428/91 , Y10T428/265
摘要： A metal thin film magnetic recording medium comprising an underlying non-magnetic layer and a magnetic layer comprising a Co-alloy having a uni-axial magnetocrystalline anisotropy formed in this order by lamination on the surface of a non-magnetic substrate. On the substrate, are formed a seed layer comprising an oxygen-containing non-magnetic amorphous metal or a seed layer comprising a non-magnetic amorphous metal having an oxygen-containing layer (not illustrated) on the surface, and an underlying non-magnetic layer is laminated on the seed layer. Further, a seed layer comprising an amorphous Cr- or V-alloy is formed on the substrate, and an underlying non-magnetic layer is laminated on the seed layer.
摘要翻译： 包含下面的非磁性层的金属薄膜磁记录介质和包含具有单轴形磁晶各向异性的Co合金的磁性层，该磁性层依次通过在非磁性基板的表面层叠而形成。 在基板上形成包含含氧非磁性非晶态金属或种子层的晶种层，该晶种层包含表面上具有含氧层（未示出）的非磁性无定形金属，以及下面的非磁性 层层压在种子层上。 此外，在基板上形成包含无定形Cr-或V-合金的晶种层，并且在种子层上层叠下面的非磁性层。
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公开(公告)号：US5658659A
公开(公告)日：1997-08-19
申请号：US286653
申请日：1994-08-05
申请人： Tu Chen , Rajiv Yadav Ranjan , Tsutomu Tom Yamashita , Miaogen Lu , Keith Kadokura , John Ko-Jen Chen , Ting Joseph Yuen
发明人： Tu Chen , Rajiv Yadav Ranjan , Tsutomu Tom Yamashita , Miaogen Lu , Keith Kadokura , John Ko-Jen Chen , Ting Joseph Yuen
IPC分类号： G11B5/66 , C23C14/06 , C23C14/50 , C23C14/56 , G11B5/64 , G11B5/65 , G11B5/73 , G11B5/738 , G11B5/85 , G11B5/851 , H01F10/00 , H01F10/14 , H01F41/18 , H01F41/30 , B32B5/16 , C23C14/00
CPC分类号： B82Y25/00 , B82Y40/00 , C23C14/06 , C23C14/50 , C23C14/568 , G11B5/656 , G11B5/7325 , G11B5/851 , H01F1/068 , H01F10/007 , H01F10/265 , H01F41/18 , H01F41/301 , Y02T50/67 , Y10S428/90 , Y10T428/12736 , Y10T428/12819 , Y10T428/12847 , Y10T428/12931 , Y10T428/26 , Y10T428/265
摘要： Media according to the present invention is comprised of individual magnetic grains as small as 300 .ANG. or smaller in diameter, which are uniformly spaced apart by a distance between 5 and 50 .ANG. by a solid segregant. This media will typically exhibit coercivity and remanent coercivity squareness of at least 0.8 each, a switching field distribution of less than 0.2, and a coercivity of at least 1500 Oe (with a minimum required Pt content), while simultaneously providing the lowest media jitter noise for optimum magnetic performance. The media is deposited at a low partial pressure of water and in the presence of an optimum amount of contributant gas on a doped nucleation layer for grain growth control.
摘要翻译： 根据本发明的介质由直径小于300埃或更小的单个磁性颗粒组成，它们通过固体分离器均匀间隔5到50埃的范围。 该介质通常将表现出至少0.8的矫顽力和残余矫顽力矩形度，小于0.2的切换场分布和至少1500Oe的矫顽力（具有最小所需的Pt含量），同时提供最低的介质抖动噪声 以获得最佳的磁性能。 介质以低分压的水分沉积，并且在最佳量的贡献气体存在下，在掺杂成核层上沉积用于晶粒生长控制。
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公开(公告)号：US5585139A
公开(公告)日：1996-12-17
申请号：US355300
申请日：1994-12-12
申请人： Helmut Steininger , Peter Heilmann
发明人： Helmut Steininger , Peter Heilmann
摘要： The magnetic recording medium consists essentially of a polymeric substrate, a coherent, magnetic thin metal film applied to the surface of the substrate by a PVD method and, if required, a protective layer formed on the thin metal film. In order to achieve a large residual induction component in the plane of the film, in particular high residual induction in the transverse direction, the thin metal film contains a noble gas or noble gas mixture, preferably argon. During the coating of the polymeric substrate with the magnetic metal or with the magnetic alloy, the noble gas is fed directly and preferably tangentially to the substrate surface at a specific noble gas flow of from 1.0.multidot.10.sup.4 to 6.0.multidot.10.sup.4. In the plane of the thin metal film, the ratio of residual induction in the longitudinal direction to that in the transverse direction is from about 0.9 to about 1.8.
摘要翻译： 磁记录介质基本上由聚合物基底，通过PVD方法施加到基底表面的相干的磁性薄金属膜，如果需要，在薄金属膜上形成保护层。 为了在膜的平面中实现大的残留感应成分，特别是在横向上的高残留感应，薄金属膜含有惰性气体或惰性气体混合物，优选氩。 在用磁性金属或与磁性合金涂覆聚合物基材期间，惰性气体以1.0×10 4至6.0×10 4的特定惰性气体流直接且优选地切向地加到基材表面上。 在薄金属膜的平面中，纵向上的残留感应与横向上的残留感应比为约0.9至约1.8。
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公开(公告)号：US5552217A
公开(公告)日：1996-09-03
申请号：US74720
申请日：1993-06-10
CPC分类号： G11B5/656 , G11B5/7325 , G11B5/738 , G11B5/851 , Y10S428/90 , Y10T428/12465 , Y10T428/12931 , Y10T428/26 , Y10T428/265
摘要： A magnetic recording medium includes a non-magnetic metal primary layer and a thin ferromagnetic alloy layer which are sequentially formed on a non-magnetic substrate in a laminated manner by sputtering. The thin ferromagnetic alloy layer is composed of not more than 15 at % of chromium, not more than 12 at % of platinum, 0.15 to 5.4 at % of a metal element selected from the group consisting of tantalum, hafnium, tungsten, zirconium and niobium, and the balance cobalt. The magnetic recording medium has a coercive force of higher than 1500 Oe and a squareness ratio of higher than 0.85.
摘要翻译： 磁记录介质包括非磁性金属基层和薄铁磁合金层，其通过溅射以层压的方式顺序地形成在非磁性基板上。 薄铁磁合金层由不大于15at％的铬，不超过12at％的铂，0.15-5.4at％的选自钽，铪，钨，锆和铌的金属元素组成 ，余量为钴。 磁记录介质具有高于1500Oe的矫顽力和高于0.85的矩形比。
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公开(公告)号：US5534324A
公开(公告)日：1996-07-09
申请号：US151704
申请日：1993-11-10
申请人： Ryuji Sugita , Kiyokazu Tohma , Tatsuaki Ishida , Yasuaki Ban
发明人： Ryuji Sugita , Kiyokazu Tohma , Tatsuaki Ishida , Yasuaki Ban
CPC分类号： G11B5/66 , Y10S428/90 , Y10T428/12465 , Y10T428/12931
摘要： A magnetic recording medium has a cobalt-based first magnetic layer and a cobalt-based second magnetic layer which are formed on a substrate of high polymer by vacuum evaporation. In order to have a high reproducing output and a high S/N ratio, the first magnetic layer has high oxygen density area which is arranged at a vicinity of the second magnetic layer, and the second magnetic layer has high oxygen density area which is arranged at a vicinity of the first magnetic layer.
摘要翻译： 磁记录介质具有钴基第一磁性层和钴基第二磁性层，它们通过真空蒸镀形成在高分子的基片上。 为了具有高再现输出和高S / N比，第一磁性层具有高氧浓度区域，其布置在第二磁性层附近，并且第二磁性层具有高的氧气密度区域，其被布置 在第一磁性层附近。
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公开(公告)号：US5506017A
公开(公告)日：1996-04-09
申请号：US482510
申请日：1995-06-07
申请人： Rajiv Y. Ranjan , Kuo H. Huang , Caroline A. Ross
发明人： Rajiv Y. Ranjan , Kuo H. Huang , Caroline A. Ross
CPC分类号： G11B5/8404 , Y10S428/90 , Y10T428/31678
摘要： This patent teaches a new method of roughening the surface of a magnetic recording medium in order to reduce the stiction and friction between a recording head and the medium to thereby improve mechanical reliability. During this method, the medium substrate is heated to form second phase precipitates which result in roughening of the medium surface. The medium roughness can be controlled by proper selection of the heating temperature and time and the substrate alloy. This results in improved contact-start-stop (CSS) performance of the medium. The method of the present invention allows for lower costs and potentially higher throughput than conventional texturing processes.
摘要翻译： 该专利教导了一种使磁记录介质的表面粗糙化的新方法，以便减少记录头和介质之间的粘结和摩擦，从而提高机械可靠性。 在该方法中，将介质基板加热形成第二相析出物，导致介质表面的粗糙化。 可以通过适当选择加热温度和时间以及基板合金来控制中等粗糙度。 这导致介质的接触起始停止（CSS）性能得到改善。 本发明的方法允许比常规纹理化工艺更低的成本和潜在的更高的生产量。
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公开(公告)号：US5505993A
公开(公告)日：1996-04-09
申请号：US286227
申请日：1994-08-05
CPC分类号： C23C14/044 , G11B5/85
摘要： A thin metal layer is applied in a thickness of less than 1,000 nm to a polymeric, web-like substrate which is moved along a cylindrical support in a vacuum chamber containing an evaporator crucible releasing the metal vapor toward the support and two coating screens arranged between the evaporator crucible and the support and defining the limiting angles of incidence of the vapor jet striking the substrate, by a process in which, in the case of predetermined limiting angles of incidence, the amount of metal vapor applied to the substrate can be optimized by means of the arrangement of the coating screens and the position of the evaporator crucible.
摘要翻译： 将薄金属层以小于1,000nm的厚度施加到聚合物网状衬底，其在圆柱形支撑件的真空室中移动，所述真空室包含将金属蒸气释放到支撑体的蒸发器坩埚，以及布置在 蒸发器坩埚和支撑件，并且限定喷射到基板上的蒸气射流的限制入射角，通过这样一个过程，其中在预定的限制入射角的情况下，施加到基底的金属蒸气的量可以通过 涂布屏幕的布置方式和蒸发器坩埚的位置。
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公开(公告)号：US5503943A
公开(公告)日：1996-04-02
申请号：US285781
申请日：1994-08-04
CPC分类号： G11B5/656 , G11B5/85 , Y10S428/90
摘要： A metal thin film magnetic recording medium having improved S/N and reduced noise is disclosed, which has a ferromagnetic metal thin film composed mainly of Co on a non-magnetic support, characterized in that the crystallite size as determined from the thin film X-ray diffraction method is 45 .ANG. (angstrom) or less relative to the (100) face of .alpha.-Co, and 120 .ANG. or less relative to the (002) face of .alpha.-Co.
摘要翻译： 公开了一种具有改善的S / N和降低的噪声的金属薄膜磁记录介质，其具有在非磁性载体上主要由Co组成的强磁性金属薄膜，其特征在于，从薄膜X- X射线衍射法相对于α-Co的（100）面为45（埃）或更小，相对于α-Co的（002）面为120或更小。
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