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1.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：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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3.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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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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6.发明授权公开(公告)号：US07465383B2
公开(公告)日：2008-12-16
申请号：US11103605
申请日：2005-04-12
IPC分类号： B29D17/00
CPC分类号： B82Y10/00 , G11B5/743 , G11B5/82 , G11B5/8404 , G11B5/858 , G11B5/865 , Y10T428/214
摘要： A master information carrier for magnetic transfer includes a master substrate made of metal, including an embossed pattern corresponding to information to be transferred. The master substrate is produced by laminating a metal disk with a predetermined thickness on an original disk, on which an embossed pattern is formed, by electroforming, peeling off the metal disk and die-cutting a disk in a desired size. An outer diameter of the metal disk is at least 1.7 times longer than an outer diameter of the die-cut master substrate. When the metal disk is peeled off from the original disk, deformation due to the forces acting from the side of the outer circumference is reduced. The flatness of the metal disk is ensured and the transfer qualities are improved. Further, a step of removing distortion of the metal disk, caused at the time of peeling off the metal disk, may also be provided.
摘要翻译： 用于磁转移的主信息载体包括由金属制成的母基板，包括对应于要传送的信息的压花图案。 通过电铸，剥离金属盘并以期望的尺寸对盘进行模切，将原始盘上形成有预定厚度的金属盘层叠在其上形成压花图案的母板上制造母版衬底。 金属盘的外径比模切母版基板的外径长至少1.7倍。 当金属盘从原始盘剥离时，由于从外周侧作用的力的变形减小。 确保金属盘的平坦度，提高转印质量。 此外，还可以提供在剥离金属盘时引起的去除金属盘的变形的步骤。
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公开(公告)号：US20050111124A1
公开(公告)日：2005-05-26
申请号：US11014944
申请日：2004-12-20
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：US06887593B2
公开(公告)日：2005-05-03
申请号：US10661477
申请日：2003-09-15
CPC分类号： B82Y10/00 , G11B5/59633 , G11B5/743 , G11B5/865 , Y10T428/32 , Y10T428/325
摘要： A master information carrier for magnetic transfer includes a substrate having an irregularity pattern representing information to be transferred to a slave medium and a magnetic layer formed on the irregularity pattern on the substrate. The depth d of the recessed portions of the irregularity pattern and the thickness t of the magnetic layer formed on the recessed portions satisfy formula −0.004≦(t−d)/d≦0.1. At the same time, the magnetic layer formed on the protruding portion of the irregularity pattern and the magnetic layer formed on the recessed portions of the irregularity pattern are connected with each other.
摘要翻译： 用于磁转移的主信息载体包括具有表示要传送到从属介质的信息的不规则图案的基板和形成在基板上的不规则图案上的磁性层。 不规则图案的凹部的深度d和形成在凹部上的磁性层的厚度t满足公式-0.004 <=（t-d）/ d <= 0.1。 同时，形成在凹凸图案的突出部分上的磁性层和形成在凹凸图案的凹陷部分上的磁性层彼此连接。
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9.发明授权公开(公告)号：US07094481B2
公开(公告)日：2006-08-22
申请号：US10958327
申请日：2004-10-06
CPC分类号： B82Y10/00 , G11B5/59633 , G11B5/743 , G11B5/82 , G11B5/865 , Y10T428/273
摘要： A master information carrier for magnetic transfer to an in-plane magnetic recording medium includes a base sheet having an irregularity pattern representing information to be transferred to an in-plane magnetic recording medium and a magnetic layer formed along the irregularity pattern. The thickness da1 of the magnetic layer on the upper surface of a protruding portion of the irregularity pattern and the thickness da2 of the magnetic layer on each of the side surfaces of the protruding portion satisfy the following condition, 0.05
摘要翻译： 用于磁传递到平面内磁记录介质的主信息载体包括具有表示要传送到平面内磁记录介质的信息的不规则图案的基片和沿着不规则图案形成的磁性层。 不规则图案的突出部分的上表面上的磁性层的厚度da 1和突出部分的每个侧表面上的磁性层的厚度da 2满足以下条件： 公式描述=“内联公式”end =“lead”？> 0.05
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公开(公告)号：US06950252B2
公开(公告)日：2005-09-27
申请号：US10178550
申请日：2002-06-25
CPC分类号： B82Y10/00 , G11B5/59633 , G11B5/65 , G11B5/7315 , G11B5/743 , G11B5/865
摘要： A master carrier for magnetic transfer is equipped with a substrate with a land/groove pattern of lands and grooves, and a magnetic layer formed on the land/groove pattern. The adhesion between the substrate and the magnetic layer is 1.2×109 N/m2 or greater. A first oxygen concentration Do at the magnetic layer formed on the land is reduced gradually toward the direction of the depth of the substrate and is greater than a second oxygen concentration Dh at the magnetic layer formed on the groove.
摘要翻译： 用于磁转印的主载体配备有具有焊盘和凹槽的焊盘/凹槽图案的基板，以及形成在焊盘/凹槽图案上的磁性层。 衬底与磁性层之间的粘合力为1.2×10 9 / N 2/2以上。 形成在焊盘上的磁性层处的第一氧浓度D
朝着衬底的深度方向逐渐减小，并且大于第二氧浓度D < 在形成在凹槽上的磁性层上。
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