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公开(公告)号：US20080241595A1
公开(公告)日：2008-10-02
申请号：US12076949
申请日：2008-03-25
CPC分类号： G11B5/855 , G11B5/667 , G11B5/7325
摘要： A magnetic recording medium includes a soft magnetic underlayer formed on a substrate, magnetic patterns made of a ferromagnetic material and provided separately on the soft magnetic underlayer, and a nonmagnetic layer including two sublayers or more of a same material and formed on the soft magnetic underlayer between the magnetic patterns.
摘要翻译： 磁记录介质包括形成在基板上的软磁性底层，由铁磁材料制成的磁性图案，分别设置在软磁性底层上，以及包含两层或更多层相同材料的非磁性层，形成在软磁性底层 在磁性图案之间。
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公开(公告)号：US20090232928A1
公开(公告)日：2009-09-17
申请号：US12473071
申请日：2009-05-27
CPC分类号： G11B7/261 , B29C33/424 , B29C2033/426 , B82Y10/00 , B82Y40/00 , C25D1/10 , G03F7/0002 , G11B7/263 , H01F41/34
摘要： According to one embodiment, a method of manufacturing a stamper includes forming a conductive layer on a surface of a master having patterns of protrusions and recesses, forming an electroforming layer on the conductive layer, separating the electroforming layer and the conductive layer from the master to form a stamper to which the patterns of protrusions and recesses of the master are transferred, removing a resist left on the surface of the stamper, and etching the surface of the stamper with an acidic solution having a pH value of less than 3.
摘要翻译： 根据一个实施例，制造压模的方法包括在具有突起和凹槽图案的母版表面上形成导电层，在导电层上形成电铸层，将电铸层和导电层与母模分离成 形成压模，母模的突起和凹部的图案被转印到其上，去除压模表面上的抗蚀剂，并用pH值小于3的酸性溶液蚀刻压模的表面。
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公开(公告)号：US20120251655A1
公开(公告)日：2012-10-04
申请号：US13492681
申请日：2012-06-08
IPC分类号： B29C59/02
CPC分类号： G11B7/261 , B29C33/424 , B29C2033/426 , B82Y10/00 , B82Y40/00 , C25D1/10 , G03F7/0002 , G11B7/263 , H01F41/34
摘要： According to one embodiment, a stamper is described with a surface that comprises patterns of protrusions and recessed. The arithmetic average roughness Ra of the surface is 1 nanometer (nm) or more and 5 nm or less.
摘要翻译： 根据一个实施例，用包括突起图案和凹陷的表面描述压模。 表面的算术平均粗糙度Ra为1nm以上且5nm以下。
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公开(公告)号：US08551348B2
公开(公告)日：2013-10-08
申请号：US12548374
申请日：2009-08-26
IPC分类号： B44C1/22
CPC分类号： G11B5/855
摘要： A magnetic recording medium has magnetic patterns formed of a patterned ferromagnetic layer, and a non-magnetic layer including a component of the ferromagnetic layer and separating the magnetic patterns, in which a thickness “a” of the non-magnetic layer and a thickness “b” of the magnetic patterns satisfy a relationship of: a
摘要翻译： 磁记录介质具有由图案化的铁磁层形成的磁图案和包含铁磁性层的成分的非磁性层，并分离磁性图案，其中非磁性层的厚度“a”和厚度“ 磁性图案的“b”满足以下关系：a
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5.发明授权Patterned media and method of manufacturing the same, and magnetic recording apparatus 有权图案化介质及其制造方法以及磁记录装置公开(公告)号：US08257560B2
公开(公告)日：2012-09-04
申请号：US12805471
申请日：2010-08-02
CPC分类号： G11B5/82 , B82Y10/00 , G11B5/59655 , G11B5/743 , G11B5/855
摘要： A patterned media has a substrate, and a magnetic recording layer on the substrate including protruded magnetic patterns and a nonmagnetic material filled in between the protruded magnetic patterns. In the patterned media, a depth Db and a depth Da, which are defined that Db is a depth from a surface of the magnetic patterns to a surface of the nonmagnetic material filled in a first central part between the magnetic patterns adjacent to each other in a cross-track direction or a down-track direction, and Da is a depth from a surface of the magnetic patterns to a surface of the nonmagnetic material filled in a second central part in a portion surrounded by the magnetic patterns, have a relationship that the depth Da is greater than the depth Db.
摘要翻译： 图案化介质具有基板，并且在基板上的磁记录层包括突出的磁图案和填充在突出磁图案之间的非磁性材料。 在图案化介质中，深度Db和深度Da被定义为Db是从磁图案的表面到填充在彼此相邻的磁图案之间的第一中心部分的非磁性材料的表面的深度 交叉轨道方向或向下轨道方向，并且Da是从磁图案的表面到填充在由磁图案包围的部分中的第二中心部分中的非磁性材料的表面的深度，具有如下关系： 深度Da大于深度Db。
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6.发明申请METHOD OF MANUFACTURING DISCRETE TRACK RECORDING MEDIUM AND DISCRETE TRACK RECORDING MEDIUM 审中-公开分离轨迹记录介质和分离轨迹记录介质的制造方法公开(公告)号：US20110165438A1
公开(公告)日：2011-07-07
申请号：US13048017
申请日：2011-03-15
IPC分类号： G11B5/00
CPC分类号： G11B5/855
摘要： According to one embodiment, a method of manufacturing a discrete track recording medium includes forming protruded magnetic patterns on a substrate, and repeating processes of depositing a nonmagnetic material so as to be filled in recesses between the magnetic patterns and etching back the nonmagnetic material two or more times with rotating the substrate in a plane thereof by an angle less than one revolution.
摘要翻译： 根据一个实施例，制造离散轨道记录介质的方法包括在基板上形成突出的磁图案，并且重复沉积非磁性材料以便填充在磁性图案之间的凹部中并且蚀刻非磁性材料2或 更多次，使基板在其平面内以小于一转的角度旋转。
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7.发明授权Substrate for magnetic recording medium, magnetic recording medium, and magnetic recording and reproducing apparatus 有权用于磁记录介质的基板，磁记录介质和磁记录和重放装置公开(公告)号：US07936537B2
公开(公告)日：2011-05-03
申请号：US12503458
申请日：2009-07-15
申请人： Kaori Kimura , Masatoshi Sakurai , Akira Kikitsu , Yoshiyuki Kamata , Satoshi Shirotori , Hiroyuki Hieda
发明人： Kaori Kimura , Masatoshi Sakurai , Akira Kikitsu , Yoshiyuki Kamata , Satoshi Shirotori , Hiroyuki Hieda
IPC分类号： G11B5/82
摘要： It is possible to improve the recording and reproducing S/N ratio, the reproduction signal intensity, and the degree of high density recording. There are provided a plurality of recording tracks formed on a substrate, each recording track being formed of a magnetic material, and non-recording sections formed on the substrate, each non-recording section separating adjacent recording tracks, each recording track including a plurality of recording sections and connecting sections for connecting the recording sections adjacent thereto in a track longitudinal direction, and each connecting section having a cross-sectional area in a track width direction that is smaller than a cross-sectional area in a track width direction of adjacent recording sections.
摘要翻译： 可以改善记录和再现S / N比，再现信号强度和高密度记录程度。 提供了形成在基板上的多个记录轨道，每个记录磁道由磁性材料形成，而非记录部分形成在基板上，每个非记录部分分隔相邻的记录磁道，每个记录磁道包括多个 记录部分和连接部分，用于在轨道纵向方向上连接与其相邻的记录部分，并且每个连接部分在轨道宽度方向上的横截面积小于相邻记录的轨道宽度方向上的横截面积 部分。
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8.发明授权Magnetic recording medium with thicker protective film in edge areas and magnetic recording apparatus using the medium 有权在边缘区域具有较厚保护膜的磁记录介质和使用介质的磁记录装置公开(公告)号：US07826176B2
公开(公告)日：2010-11-02
申请号：US11723977
申请日：2007-03-22
CPC分类号： G11B5/82 , G11B5/667 , G11B5/72 , G11B5/7315 , G11B5/7325 , G11B5/855
摘要： A magnetic recording media includes a toroidal substrate, a surface thereof is divided into a recording area located in a central part between an outer peripheral edge and an inner peripheral edge, edge areas located within 100 μm or more and 2,000 μm or less from the outer and inner peripheral edges, respectively, and adjacent areas located between the edge areas and the recording area, respectively, a magnetic film on the substrate, and a protective film on the magnetic film, in which the magnetic film is thinner in the edge areas than that in the adjacent areas, and at least a part of the protective film in the edge areas is thicker than that in the adjacent areas.
摘要翻译： 磁记录介质包括环形基板，其表面被分成位于外周边缘和内周边缘之间的中心部分的记录区域，位于外侧100微米以上至2000微米以下的边缘区域 分别位于边缘区域和记录区域之间的内周边缘和相邻区域，基板上的磁性膜和磁性膜上的保护膜，其中磁性膜在边缘区域中比薄 在相邻区域中，边缘区域中的保护膜的至少一部分比相邻区域的保护膜厚。
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公开(公告)号：US20100084374A1
公开(公告)日：2010-04-08
申请号：US12638841
申请日：2009-12-15
IPC分类号： G11B5/84
CPC分类号： G11B5/855
摘要： According to one embodiment, a method of manufacturing a magnetic recording medium comprises forming a protective film on a ferromagnetic recording layer containing Cobalt (Co) on a substrate and forming a recess in both the protective film and the ferromagnetic recording layer at a part where a nonmagnetic layer is to be formed. The method further comprises removing Co from a part of the recess of the ferromagnetic recording layer to form the nonmagnetic layer that separates magnetic patterns made of the ferromagnetic recording layer containing Co. The nonmagnetic layer has an identical chemical composition as the ferromagnetic recording layer, except for the nonmagnetic layer having a lower Co concentration than the magnetic patterns.
摘要翻译： 根据一个实施例，制造磁记录介质的方法包括在包含钴（Co）的铁磁记录层上形成保护膜，并在保护膜和铁磁记录层中形成凹部， 将形成非磁性层。 该方法还包括从铁磁记录层的凹部的一部分去除Co以形成分离由含有Co的铁磁记录层制成的磁图案的非磁性层。非磁性层具有与铁磁记录层相同的化学成分， 对于具有比磁图案低的Co浓度的非磁性层。
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10.发明申请Patterned media and method of manufacturing the same, and magnetic recording apparatus 有权图案化介质及其制造方法以及磁记录装置公开(公告)号：US20070217075A1
公开(公告)日：2007-09-20
申请号：US11724328
申请日：2007-03-15
IPC分类号： G11B5/82
CPC分类号： G11B5/82 , B82Y10/00 , G11B5/59655 , G11B5/743 , G11B5/855
摘要： A patterned media has a substrate, and a magnetic recording layer on the substrate including protruded magnetic patterns and a nonmagnetic material filled in between the protruded magnetic patterns. In the patterned media, a depth Db and a depth Da, which are defined that Db is a depth from a surface of the magnetic patterns to a surface of the nonmagnetic material filled in a first central part between the magnetic patterns adjacent to each other in a cross-track direction or a down-track direction, and Da is a depth from a surface of the magnetic patterns to a surface of the nonmagnetic material filled in a second central part in a portion surrounded by the magnetic patterns, have a relationship that the depth Da is greater than the depth Db.
摘要翻译： 图案化介质具有基板，并且在基板上的磁记录层包括突出的磁图案和填充在突出磁图案之间的非磁性材料。 在图案化介质中，定义为D 的深度D B和深度D a是距离 磁性图形被填充到在交叉轨道方向或向下轨道方向上彼此相邻的磁性图案之间的第一中心部分中的非磁性材料的表面，并且D a是从 在由磁性图案包围的部分填充在第二中心部分中的非磁性材料的表面的磁性图案的表面具有深度D a a大于深度D < SUB> b 。
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