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公开(公告)号：US4707756A
公开(公告)日：1987-11-17
申请号：US721715
申请日：1985-04-10
CPC分类号： G11B5/667 , G11B5/66 , G11B5/7325 , Y10S428/90 , Y10T428/12465 , Y10T428/12674
摘要： Disclosed is a perpendicular magnetic recording medium wherein an underlayer made of a material containing Si and/or Ge as its principal ingredient is deposited on a substrate, and a perpendicular magnetic film made of a Co-based alloy is deposited on the underlayer. With the perpendicular magnetic recording medium, the perpendicular magnetic film has an enhanced degree of C-axis orientation, and the bond strength between the perpendicular magnetic film and the substrate is also enhanced when the substrate is non-metallic.
摘要翻译： 公开了一种垂直磁记录介质，其中由含有Si和/或Ge作为其主要成分的材料制成的底层沉积在基板上，并且由Co基合金制成的垂直磁膜沉积在底层上。 对于垂直磁记录介质，垂直磁膜具有提高的C轴取向度，并且当衬底是非金属的时，垂直磁膜和衬底之间的结合强度也增强。
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公开(公告)号：US4722869A
公开(公告)日：1988-02-02
申请号：US879614
申请日：1986-06-25
CPC分类号： G11B5/66 , Y10S428/928 , Y10T428/12465 , Y10T428/12493 , Y10T428/12674 , Y10T428/12708 , Y10T428/12722 , Y10T428/12792 , Y10T428/12806 , Y10T428/12861
摘要： Disclosed is a magnetic recording medium comprising a predetermined substrate having or not having a soft magnetic thin film provided thereon, a layer formed thereon for controlling the columnar crystal grain size in a thin magnetic film formed on the substrate, and the thin magnetic film provided on the columnar crystal grain size control layer. The above-mentioned columnar crystal grain size control layer is a film having a close-packed hexagonal lattice structure and made of one element selected from among Ru, Sc, Y, and Zn, or two or more elements selected from among Ru, Sc, Y, Zn, and Ti; or a film having a close-packed hexagonal lattice structure and made of Co or a Co-based alloy. The columnar crystal grain size control layer may consist of two layers, the under layer of which is made of one or more elements selected from among Si, Ge, and Sn.
摘要翻译： 公开了一种磁记录介质，其包括具有或不具有设置在其上的软磁性薄膜的预定基板，其上形成有用于控制形成在基板上的薄磁膜中的柱状晶粒尺寸的层，以及设置在该基板上的薄磁膜 柱状晶粒尺寸控制层。 上述柱状晶粒尺寸控制层是具有紧密堆积的六边形格子结构并由选自Ru，Sc，Y和Zn中的一种元素制成的膜，或者选自Ru，Sc， Y，Zn和Ti; 或具有紧密堆积的六边形格子结构并由Co或Co基合金制成的膜。 柱状晶粒尺寸控制层可以由两层构成，其下层由选自Si，Ge和Sn中的一种或多种元素制成。
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3.发明申请公开(公告)号：US20050123806A1
公开(公告)日：2005-06-09
申请号：US11036064
申请日：2005-01-18
申请人： Kazusuke Yamanaka , Tomoo Yamamoto , Yuzuru Hosoe , Nobuyuki Inaba , Yasutaro Uesaka , Masaaki Futamoto , Yoshibumi Matsuda , Kenji Furusawa , Shinji Narishige
发明人： Kazusuke Yamanaka , Tomoo Yamamoto , Yuzuru Hosoe , Nobuyuki Inaba , Yasutaro Uesaka , Masaaki Futamoto , Yoshibumi Matsuda , Kenji Furusawa , Shinji Narishige
CPC分类号： G11B5/64 , Y10T428/12465 , Y10T428/12986 , Y10T428/265 , Y10T428/31
摘要： A magnetic recording medium having a substrate, an under-layer formed on the substrate, a magnetic layer formed on the substrate and a protective layer formed on the magnetic layer. The magnetic layer comprises Co, Cr and Pt with a thickness being from 10 nm to 22 nm. Further, a coercivity of the magnetic layer is not less than 2000 Oe, and a fluctuation field of magnetic viscosity at a field strength equal to remanence coercivity or coercivity is not less than 30 Oe.
摘要翻译： 具有基板的磁记录介质，在基板上形成的下层，形成在基板上的磁性层和形成在磁性层上的保护层。 磁性层包括厚度为10nm至22nm的Co，Cr和Pt。 此外，磁性层的矫顽力不小于2000Oe，磁场强度等于剩磁矫顽力或矫顽磁力的磁场粘度的波动范围不小于30Oe。
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4.发明授权Magnetic recording medium and magnetic recording and reproducing apparatus wherein the magnetic layer has a fluctuation of field; A or Hf of not less than 30 Oersteds 失效磁记录介质和磁记录和再现装置，其中磁层具有磁场的波动; A或Hf不小于30奥斯特公开(公告)号：US06613428B2
公开(公告)日：2003-09-02
申请号：US09849404
申请日：2001-05-07
申请人： Kazusuke Yamanaka , Tomoo Yamamoto , Yuzuru Hosoe , Nobuyuki Inaba , Yasutaro Uesaka , Masaaki Futamoto , Yoshibumi Matsuda , Kenji Furusawa , Shinji Narishige
发明人： Kazusuke Yamanaka , Tomoo Yamamoto , Yuzuru Hosoe , Nobuyuki Inaba , Yasutaro Uesaka , Masaaki Futamoto , Yoshibumi Matsuda , Kenji Furusawa , Shinji Narishige
IPC分类号： G11B564
CPC分类号： G11B5/64 , Y10T428/12465 , Y10T428/12986 , Y10T428/265 , Y10T428/31
摘要： A thin film magnetic recording medium including a magnetic layer having a fluctuation field defined as S/Xirr, where S is magnetic viscosity and Xirr is irreversible susceptibility Xirr. The fluctuation field of the magnetic layer is not less than 15 oersteds.
摘要翻译： 一种薄膜磁记录介质，包括具有定义为S / Xirr的波动场的磁性层，其中S是磁粘度和Xirr是不可逆的磁化率Xirr。 磁性层的波动场不小于15奥斯特。
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公开(公告)号：US06310748B1
公开(公告)日：2001-10-30
申请号：US08521363
申请日：1995-08-31
申请人： Kazusuke Yamanaka , Tomoo Yamamoto , Yuzuru Hosoe , Nobuyuki Inaba , Yasutaro Uesaka , Masaaki Futamoto , Yoshibumi Matsuda , Kenji Furusawa , Shinji Narishige
发明人： Kazusuke Yamanaka , Tomoo Yamamoto , Yuzuru Hosoe , Nobuyuki Inaba , Yasutaro Uesaka , Masaaki Futamoto , Yoshibumi Matsuda , Kenji Furusawa , Shinji Narishige
IPC分类号： G11B566
CPC分类号： G11B5/64 , Y10T428/12465 , Y10T428/12986 , Y10T428/265 , Y10T428/31
摘要： A ferromagnetic thin film is used to provide a magnetic recording medium whose noise is low and whose S/N is high. The ferromagnetic thin film as the magnetic film of the magnetic recording medium is such that the fluctuation field of magnetic viscosity at 25° C. at the field strength equal to remanence coercivity or coercivity is not less than 15 oersteds and the coercivity is not less than 2000 oersteds.
摘要翻译： 铁磁薄膜用于提供噪声低且S / N高的磁记录介质。 作为磁记录介质的磁性膜的铁磁性薄膜使得在等于剩磁矫顽力或矫顽力的场强下，25℃下磁力粘度的波动范围不小于15奥斯特，矫顽力不小于 2000奥斯特。
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6.发明授权公开(公告)号：US07157162B2
公开(公告)日：2007-01-02
申请号：US11036064
申请日：2005-01-18
申请人： Kazusuke Yamanaka , Tomoo Yamamoto , Yuzuru Hosoe , Nobuyuki Inaba , Yasutaro Uesaka , Masaaki Futamoto , Yoshibumi Matsuda , Kenji Furusawa , Shinji Narishige
发明人： Kazusuke Yamanaka , Tomoo Yamamoto , Yuzuru Hosoe , Nobuyuki Inaba , Yasutaro Uesaka , Masaaki Futamoto , Yoshibumi Matsuda , Kenji Furusawa , Shinji Narishige
IPC分类号： G11B5/65
CPC分类号： G11B5/64 , Y10T428/12465 , Y10T428/12986 , Y10T428/265 , Y10T428/31
摘要： A magnetic recording medium having a substrate, an under-layer formed on the substrate, a magnetic layer formed on the substrate and a protective layer formed on the magnetic layer. The magnetic layer comprises Co, Cr and Pt with a thickness being from 10 nm to 22 nm. Further, a coercivity of the magnetic layer is not less than 2000 Oe, and a fluctuation field of magnetic viscosity at a field strength equal to remanence coercivity or coercivity is not less than 30 Oe.
摘要翻译： 具有基板的磁记录介质，在基板上形成的下层，形成在基板上的磁性层和形成在磁性层上的保护层。 磁性层包括厚度为10nm至22nm的Co，Cr和Pt。 此外，磁性层的矫顽力不小于2000Oe，磁场强度等于剩磁矫顽力或矫顽磁力的磁场粘度的波动范围不小于30Oe。
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7.发明授权Magnetic recording medium possessing a fluctuation field of not less than 30 Oe 失效磁记录介质具有不小于30 Oe的波动场公开(公告)号：US06846577B2
公开(公告)日：2005-01-25
申请号：US10386456
申请日：2003-03-13
申请人： Kazusuke Yamanaka , Tomoo Yamamoto , Yuzuru Hosoe , Nobuyuki Inaba , Yasutaro Uesaka , Masaaki Futamoto , Yoshibumi Matsuda , Kenji Furusawa , Shinji Narishige
发明人： Kazusuke Yamanaka , Tomoo Yamamoto , Yuzuru Hosoe , Nobuyuki Inaba , Yasutaro Uesaka , Masaaki Futamoto , Yoshibumi Matsuda , Kenji Furusawa , Shinji Narishige
CPC分类号： G11B5/64 , Y10T428/12465 , Y10T428/12986 , Y10T428/265 , Y10T428/31
摘要： An ferromagnetic thin film is used to provide a magnetic recording medium whose noise is low and whose S/N value is high. The ferromagnetic thin film as the magnetic film of the magnetic recording medium is such that the fluctuation field of magnetic viscosity at 25° C. at the field strength equal to remanence coercivity or coercivity is not less than 15 oersteds and the coercivity is not less than 2000 oersteds.
摘要翻译： 铁磁性薄膜用于提供噪声低且S / N值高的磁记录介质。 作为磁记录介质的磁性膜的铁磁性薄膜使得在等于剩磁矫顽力或矫顽力的场强下，25℃下磁力粘度的波动范围不小于15奥斯特，矫顽力不小于 2000奥斯特。
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8.发明授权Hard disk magnetic recording medium comprising magnetic powder and a binder and having a specified magnetic layer thickness and surface roughness 失效包含磁粉和粘合剂并具有规定的磁性层厚度和表面粗糙度的硬盘磁记录介质
公开(公告)号：US5180616A
公开(公告)日：1993-01-19
申请号：US293177
申请日：1989-01-03
申请人： Hajime Fukke , Motoo Akagi , Iwao Matsuyama , Masayuki Katsumoto , Hitoshi Inoue , Naoki Kodama , Yasutaro Uesaka
发明人： Hajime Fukke , Motoo Akagi , Iwao Matsuyama , Masayuki Katsumoto , Hitoshi Inoue , Naoki Kodama , Yasutaro Uesaka
CPC分类号： C09D5/00 , G11B5/70 , G11B5/70647 , G11B5/712 , Y10S428/90 , Y10T428/265
摘要： A method for manufacturing a magnetic paint by mixing a resin composition powder as a dispersing binder for a magnetic powder with the magnetic powder, or together with a filler, and grinding the mixture under a high shear stress is disclosed. A magnetic recording medium such as a magnetic disk, etc., prepared by using the magnetic paint, can have a magnetic coating film having a substantially uniform film thickness of not more than 0.9 .mu.m and a surface roughness of not more than 0.05 .mu.m Ra before surface finishing.
摘要翻译： 公开了一种通过将作为磁性粉末的分散粘合剂的树脂组合物粉末与磁性粉末或与填料一起混合并在高剪切应力下研磨混合物来制造磁性涂料的方法。 通过使用磁性涂料制备的磁盘等磁记录介质，可以制成膜厚基本上不大于0.9μm，表面粗糙度不大于0.05μm的磁性涂膜 表面处理前的Ra。
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9.发明授权Method for magnetic orientation of magnetic recording medium using Meissner effect of high Tc superconductor 失效使用高Tc超导体的Meissner效应的磁记录介质的磁性取向方法
公开(公告)号：US5034243A
公开(公告)日：1991-07-23
申请号：US430167
申请日：1989-11-01
申请人： Katsuyoshi Chiba , Masayuki Katsumoto , Yasutaro Uesaka , Heigo Ishihara , Naoki Kodama , Hajime Fukke , Iwao Matsuyama , Tsuneo Suganuma
发明人： Katsuyoshi Chiba , Masayuki Katsumoto , Yasutaro Uesaka , Heigo Ishihara , Naoki Kodama , Hajime Fukke , Iwao Matsuyama , Tsuneo Suganuma
摘要： A method for magnetic orientation of a magnetic recording medium using Meissner effect of a superconductor and a system therefor and a magnetic recording medium produced thereby. The magnetic particles of plate hexagonal barium ferrite in the magnetic coating are allowed to orient in the longitudinal direction thereof so that a magnetic recording medium having a magnetic orientation in such direction with the magnetic particles can be obtained.
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10.发明授权Process for producing a rigid magnetic disk by longitudinally generating standing waves or interference waves in an undried applied magnetic paint 失效通过在未干燥的施加的磁性涂料中纵向产生驻波或干扰波来制造刚性磁盘的方法
公开(公告)号：US5180608A
公开(公告)日：1993-01-19
申请号：US604380
申请日：1990-10-24
申请人： Katsuyoshi Chiba , Masayuki Katsumoto , Yasutaro Uesaka , Hajime Fukke , Heigo Ishihara , Iwao Matsuyama , Naoki Kodama , Hitoshi Inoue , Yoshiharu Terada
发明人： Katsuyoshi Chiba , Masayuki Katsumoto , Yasutaro Uesaka , Hajime Fukke , Heigo Ishihara , Iwao Matsuyama , Naoki Kodama , Hitoshi Inoue , Yoshiharu Terada
IPC分类号： G11B5/845
CPC分类号： G11B5/845 , Y10S428/90
摘要： A coating type, magnetic disk is produced by applying a magnetic paint containing magnetic powders in a dispersed state to a non-magnetic substrate, thereby forming a magnetic recording film thereon, and applying surface waves to the magnetic recording film in an undried state. By applying the surface waves to the magnetic recording film, dispersibility and orientation of the magnetic powders are improved and a longitudinally oriented, coating type magnetic disk with distinguished electromagnetic properties, such as a high S/N ratio, etc. can be obtained.
摘要翻译： 通过将含有分散状态的磁性粉末的磁性涂料施加到非磁性基板上，从而在其上形成磁记录膜，并以未干燥状态向磁记录膜施加表面波，来制造涂层型磁盘。 通过将表面波施加到磁记录膜，改善了磁粉的分散性和取向性，并且可以获得具有高S / N比等的电磁特性的纵向取向的涂布型磁盘。
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