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公开(公告)号：US5069932A
公开(公告)日：1991-12-03
申请号：US683626
申请日：1991-04-11
申请人： Junji Nakada , Hideaki Takeuchi , Tadashi Yasunaga
发明人： Junji Nakada , Hideaki Takeuchi , Tadashi Yasunaga
CPC分类号： G11B5/84
摘要： A continuous polymeric substrate for a magnetic recording medium, on which magnetic material is deposited during which the end portions of both sides of the substrate is masked, is wound up on a wind-up roll in a vacuum atmosphere while the substrate is fluctuated in a width direction by a fluctuating width ranging from 0.2 mm to 40 mm in a fluctuating cycle ranging from 10 seconds to 1000 seconds.
摘要翻译： 一种用于磁记录介质的连续聚合物基材，其上沉积有磁性材料，其中基板的两侧的端部被掩蔽，在真空气氛中卷绕在卷绕辊上，同时基板在 宽度范围为0.2mm至40mm的波动宽度，波动周期为10秒至1000秒。
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2.发明申请METHOD FOR PRODUCING MAGNETIC RECORDING MEDIUM, MAGNETIC RECORDING MEDIUM PRODUCED BY THE PRODUCTION METHOD, AND MOLD STRUCTURE FOR USE IN THE PRODUCTION METHOD 审中-公开用于生产磁记录介质的方法，由生产方法生产的磁记录介质和用于生产方法的模具结构公开(公告)号：US20080316649A1
公开(公告)日：2008-12-25
申请号：US12142611
申请日：2008-06-19
摘要： The present invention provides a method for producing a magnetic recording medium having servo areas and data areas using a mold structure having a plurality of convex portions, the method, including: forming an imprint resist layer on a surface of a substrate for the magnetic recording medium, forming a convexo-concave resist pattern in the formed imprint resist layer by pressing the plurality of convex portions of the mold structure against the imprint resist layer, and transferring magnetism to the servo areas in the magnetic recording medium by applying a magnetic field to the servo areas via the mold structure.
摘要翻译： 本发明提供一种使用具有多个凸部的模具结构来制造具有伺服区域和数据区域的磁记录介质的方法，所述方法包括：在用于磁记录介质的基板的表面上形成压印抗蚀剂层 通过将模具结构的多个凸部按压在抗蚀剂层上，在形成的抗压印层中形成凹凸的抗蚀剂图案，并通过对磁记录介质施加磁场将磁力传递到磁记录介质的伺服区域 伺服区通过模具结构。
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公开(公告)号：US07149042B2
公开(公告)日：2006-12-12
申请号：US11014944
申请日：2004-12-20
IPC分类号： G11B5/86
CPC分类号： B82Y10/00 , G11B5/59633 , G11B5/743 , G11B5/82 , G11B5/865
摘要： A master carrier for magnetic transfer is equipped with a substrate having a land/groove pattern. The land/groove pattern is formed from a magnetic material and corresponds to information that is transferred to a magnetic recording disk. Each land in the land/groove pattern has four round corners whose radius is from 1% through 47% of the width of a data track on the disk.
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公开(公告)号：US07054082B2
公开(公告)日：2006-05-30
申请号：US10163370
申请日：2002-06-07
IPC分类号： G11B5/86
CPC分类号： G11B5/865 , G11B5/59633 , G11B5/82
摘要： An accurate magnetic transfer to a high-density slave medium having two magnetic layers and utilizing antiferromagnetic coupling is performed. By applying a first magnetic field that causes both the first and second magnetic layers of the magnetic layer of a slave medium to reach saturation magnetization unidirectionally along the circumferential direction of the track, the first and second magnetic layers are magnetized uniformly in the same direction as the first magnetic field. Then, a second magnetic field that inverts the magnetization of the first magnetic layer and has no effect on the magnetization of the second magnetic layer is applied in the opposite direction, whereby only the magnetization direction of the first magnetic layer is inverted in the direction of the second magnetic field. Thereby, a favorable initial magnetization state in which the magnetization directions of the first and second magnetic layers are oriented antiparallel can be obtained.
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5.发明授权
公开(公告)号：US5560995A
公开(公告)日：1996-10-01
申请号：US442755
申请日：1995-05-17
申请人： Kazuyuki Usuki , Toshio Ishida , Tadashi Yasunaga
发明人： Kazuyuki Usuki , Toshio Ishida , Tadashi Yasunaga
CPC分类号： G11B5/725 , Y10S428/90 , Y10T428/31678
摘要： The magnetic recording medium has a magnetic layer of a ferromagnetic metal thin film over at least one surface of a non-magnetic base, in which a phosphoric monoester compound which is represented by R.sub.1 --OPO(OH).sub.2, a florine-containing fatty acid ester compound which is represented by R.sub.2 --COO--R.sub.3, and a fluorinated hydrocarbon in which some of the hydrogen atoms of a hydrocarbon having from 14 to 40 carbon atoms have been replaced by fluorine atoms, are present on the magnetic layer. R.sub.1 is a hydrocarbon group having from 8 to 26 carbon atoms. R.sub.2 and R.sub.3 are each a hydrocarbon group having from 8 to 26 carbon atoms, or a fluorinated hydrocarbon group in which some or all of the hydrogen atoms of a hydrocarbon group having from 8 to 26 carbon atoms have been replaced by fluorine atoms. R.sub.2 and R.sub.3 may be the same or different from each other. At least either one of R.sub.2 and R.sub.3 contains fluorine atoms.
摘要翻译： 磁记录介质在非磁性碱的至少一个表面上具有强磁性金属薄膜的磁性层，其中由R1-OPO（OH）2表示的磷酸单酯化合物，含有佛罗里酸的脂肪酸 由R2-COO-R3表示的酯化合物和其中一些具有14〜40个碳原子的烃的氢原子被氟原子代替的氟化烃存在于磁性层上。 R1是具有8至26个碳原子的烃基。 R2和R3各自为具有8至26个碳原子的烃基或其中具有8至26个碳原子的烃基的一些或全部氢原子已被氟原子替代的氟化烃基。 R2和R3可以相同或不同。 R2和R3中的至少一个含有氟原子。
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公开(公告)号：US4876113A
公开(公告)日：1989-10-24
申请号：US192981
申请日：1988-05-12
申请人： Tadashi Yasunaga , Koji Sasazawa
发明人： Tadashi Yasunaga , Koji Sasazawa
CPC分类号： G11B5/8408 , G11B5/84 , Y10S428/90
摘要： A method for producing a magnetic recording medium having improved corrosion resistance and durability. A magnetic metal thin film is formed on a nonmagnetic substrate. The substrate then is exposed to a glow discharge atmosphere, and immediately thereafter a protective lubricant layer is deposited over the magnetic metal thin film.
摘要翻译： 一种具有改善的耐腐蚀性和耐久性的磁记录介质的制造方法。 在非磁性基板上形成磁性金属薄膜。 然后将衬底暴露于辉光放电气氛，并且立即在该磁性金属薄膜上沉积保护性润滑剂层。
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公开(公告)号：US4835068A
公开(公告)日：1989-05-30
申请号：US113380
申请日：1987-10-27
CPC分类号： G11B5/65 , G11B5/851 , Y10S428/90
摘要： A magnetic recording medium comprises a non-magnetic substrate and a magnetic film which is formed on the non-magnetic substrate and the major component of which is iron nitride-oxide.
摘要翻译： 磁记录介质包括非磁性基板和形成在非磁性基板上的磁性膜，其主要成分是氧化铁 - 氧化物。
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公开(公告)号：US4713262A
公开(公告)日：1987-12-15
申请号：US914513
申请日：1986-10-02
申请人： Tadashi Yasunaga , Ryuji Shirahata
发明人： Tadashi Yasunaga , Ryuji Shirahata
CPC分类号： G11B5/85
摘要： A method for manufacturing a magnetic recording medium, comprising evaporating a magnetic metal material from an evaporation source to form a vapor stream of the magnetic metal material, vapor-depositing the magnetic metal material on a tape-shaped substrate moving along a cooling can such that the incident angle (.theta.) of the vapor stream which is incident upon the substrate changes continuously from a high incident angle (.theta.max) to a low incident angle (.theta.min), and at the same time introducing one or more gases selected from the group consisting of a rare gas, CO.sub.2 gas, N.sub.2 gas, and nitrogen oxide gas, or a mixed gas composed of oxygen gas and one or more gases selected from the group consisting of a rare gas, CO.sub.2 gas, N.sub.2 gas and nitrogen oxide gas from a gas inlet part disposed at a position in the vicinity of the substrate and near the vapor stream at a low incident angle (.theta.min) upon the substrate, thereby providing a ferromagnetic metal film on the substrate.
摘要翻译： 一种制造磁记录介质的方法，包括从蒸发源蒸发磁性金属材料以形成磁性金属材料的蒸汽流，将磁性金属材料气化沉积在沿冷却罐移动的带状基底上，使得 入射到衬底上的蒸气流的入射角（θ）从高入射角（θmax）连续变化到低入射角（θmin），并且同时引入一个或多个选自 或者由稀有气体，二氧化碳气体，氮气和氮氧化物气体组成的组，或由氧气和选自稀有气体，二氧化碳气体，氮气和氮氧化物气体中的一种或多种气体构成的混合气体 从设置在基板附近的位置处的气体入口部分以及在基板上的低入射角（θmin）附近的蒸气流，从而在基板上提供强磁性金属膜。
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公开(公告)号：US20090039560A1
公开(公告)日：2009-02-12
申请号：US12185917
申请日：2008-08-05
IPC分类号： H05B6/00
摘要： The present invention provides an apparatus for manufacturing a magnetic recording medium including, a mold structure formed of a disc-shaped substrate having on a surface thereof a concavo-convex pattern having convex portions which correspond to a servo area and a data area of a magnetic recording medium; and an imprinting and magnetic field applying unit which transfers a concavo-convex pattern on the basis of the concavo-convex pattern of the mold structure into an imprint resist layer that is made of an imprint resist composition and that is formed on a magnetic layer of a magnetic recording medium base by pressing the mold structure against the imprint resist layer, and which transfers magnetism to the servo area by application of a magnetic field via the mold structure.
摘要翻译： 本发明提供一种磁记录介质的制造装置，其特征在于，包括：由盘状基板形成的模具结构体，所述模具结构的表面具有凹凸图案，所述凹凸图案具有对应于伺服区域的凸部和磁性数据区域 记录介质; 以及压印和磁场施加单元，其将基于模具结构的凹凸图案的凹凸图案转印成由抗蚀刻剂组合物制成的压印抗蚀剂层，并且形成在压电抗蚀剂组合物的磁性层上 通过将模具结构压靠在抗压印层上而将磁记录介质基体，并且通过经由模具结构施加磁场将磁力传递到伺服区域。
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10.发明申请METHOD FOR PRODUCING MAGNETIC RECORDING MEDIUM, MAGNETIC RECORDING MEDIUM PRODUCED BY THE PRODUCTION METHOD, AND MOLD STRUCTURE FOR USE IN THE PRODUCTION METHOD 审中-公开用于生产磁记录介质的方法，由生产方法生产的磁记录介质和用于生产方法的模具结构公开(公告)号：US20090002886A1
公开(公告)日：2009-01-01
申请号：US12147553
申请日：2008-06-27
摘要： The present invention provides a method for producing a magnetic recording medium having servo areas and data areas using a mold structure. The method includes at least forming an imprint resist layer on a substrate surface of a magnetic recording medium, forming a convexo-concave pattern in the imprint resist layer by pressing convex portions of the mold structure against the imprint resist layer, and transferring magnetism to the servo areas in the magnetic recording medium by applying a magnetic field via the mold structure, wherein the imprint resist layer is formed only on areas of the substrate surface corresponding to the data areas in the magnetic recording medium, and the magnetic field is applied to areas of the substrate surface corresponding to the servo areas, with the areas of the substrate surface corresponding to the servo areas being in contact with convex portions of the mold structure.
摘要翻译： 本发明提供一种使用模具结构制造具有伺服区域和数据区域的磁记录介质的方法。 该方法至少在磁记录介质的基板表面上形成压印抗蚀剂层，通过将模具结构的凸部压靠在抗蚀剂层上，在压印抗蚀剂层中形成凹凸图案，并将磁性转移到 通过经由模具结构施加磁场而在磁记录介质中的伺服区域，其中，仅在与磁记录介质中的数据区域对应的基板表面的区域上形成印记抗蚀剂层，并且将磁场施加到区域 对应于伺服区域的基板表面，其中基板表面的对应于伺服区域的区域与模具结构的凸部接触。
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