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1.发明授权公开(公告)号：US06829201B2
公开(公告)日：2004-12-07
申请号：US10023832
申请日：2001-12-21
IPC分类号： G11B1100
CPC分类号： G11B5/865 , B82Y10/00 , G11B5/5526 , G11B5/59677 , G11B5/743 , G11B5/82 , G11B5/825 , G11B11/10526 , G11B11/10565 , G11B11/10576 , G11B11/10578 , G11B11/10582 , G11B2005/0021
摘要： There are provided an information recording medium which permits accurate tracking servo, and a method for recording and reproducing for an information recording medium which allows recording and reproducing of a signal at a favorable S/N by carrying out at least one of information recording and information reproduction while accurately performing tracking servo. A magneto-optic disk includes a magnetic recording layer for magnetically recording information. The magnetic recording layer is in advance magnetized for concentrically or spirally around the center of the disk in such a manner that magnetized regions are disposed such that adjacent regions are magnetized in different directions and alternately arranged in the radial direction of the disk. Accordingly, tracking can be continuously performed and accurate tracking servo can also be performed.
摘要翻译： 提供了一种允许精确跟踪伺服的信息记录介质，以及一种用于信息记录介质的记录和再现方法，该信息记录介质允许通过执行信息记录和信息中的至少一个来以良好的S / N记录和再现信号 正确执行跟踪伺服时再现。 磁光盘包括用于磁记录信息的磁记录层。 磁记录层预先被磁化以围绕盘的中心同心或螺旋地以磁化区域被布置成使得相邻区域沿不同方向被磁化并且沿盘的径向方向交替布置。 因此，可以连续执行跟踪，并且还可以执行精确的跟踪伺服。
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公开(公告)号：US06977786B2
公开(公告)日：2005-12-20
申请号：US10264343
申请日：2002-10-04
申请人： Kazuyuki Usuki , Masakazu Nishikawa , Makoto Nagao
发明人： Kazuyuki Usuki , Masakazu Nishikawa , Makoto Nagao
CPC分类号： G11B5/59677 , G11B5/59611 , G11B5/865
摘要： In an information recording method of the present invention by carrying out recording data while carrying out tracking servo accurately, high density recording of signals at a good S/N can be carried out, and high density recording by a vertical magnetic recording system can be carried out. A magnetic disk comprises a magnetic recording layer, and the magnetic recording layer is magnetized in advance such that magnetized regions A and B having different magnetization directions are formed. At a time of recording data, vertical magnetic recording is carried out by a magnetic head while carrying out accurate tracking servo by optically tracking by a magneto-optical effect utilizing a difference in the magnetization directions of the magnetized regions A and B. Therefore, high-density recording at a good S/N is possible.
摘要翻译： 在本发明的信息记录方法中，通过在精确地执行跟踪伺服的同时执行记录数据，可以进行具有良好S / N的信号的高密度记录，并且可以承载通过垂直磁记录系统的高密度记录 出来 磁盘包括磁记录层，磁记录层被预先磁化，从而形成磁化方向不同的磁化区域A和B. 在记录数据时，通过利用磁化区域A和B的磁化方向上的差异的磁光效应通过光学跟踪进行精确的跟踪伺服，由磁头执行垂直磁记录。因此，高 在良好的S / N下的密度记录是可能的。
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3.发明申请Magnetic recording medium including a magnetic layer containing a nonmagnetic oxide 审中-公开磁记录介质包括含有非磁性氧化物的磁性层公开(公告)号：US20050008901A1
公开(公告)日：2005-01-13
申请号：US10915344
申请日：2004-08-11
CPC分类号： G11B5/7325 , G11B5/656 , G11B5/7315 , G11B5/7379 , G11B5/851 , Y10T428/24248 , Y10T428/24281 , Y10T428/256 , Y10T428/259
摘要： A magnetic recording medium, which contains a chromium-containing primer layer and a magnetic layer at least on one surface of a nonmagnetic support member, the chromium-containing primer layer contains chromium and at least one type of element selected from a group of cobalt, beryllium, osmium, rhenium, titanium, zinc, tantalum, aluminum, molybdenum, tungsten, vanadium, iron, antimony, iridium, ruthenium, rhodium, platinum, palladium, silicon, and zirconium, and the magnetic layer contains a ferromagnetic metal alloy containing at least cobalt, platinum and chromium, and a nonmagnetic material.
摘要翻译： 一种磁记录介质，其含有至少在非磁性支撑构件的一个表面上的含铬底漆层和磁性层，所述含铬底漆层含有铬和至少一种选自钴， 铍，锇，铼，钛，锌，钽，铝，钼，钨，钒，铁，锑，铱，钌，铑，铂，钯，硅和锆，并且磁性层含有强磁性金属合金， 最少的钴，铂和铬，以及非磁性材料。
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公开(公告)号：US06577459B1
公开(公告)日：2003-06-10
申请号：US09592447
申请日：2000-06-12
IPC分类号： G11B586
CPC分类号： G11B5/865
摘要： The present invention provides a method for magnetic transfer and an apparatus for magnetic transfer, by which it is possible to transfer a transfer pattern with high quality from a master carrier for magnetic transfer to a slave medium by magnetic transfer regardless of position of the magnetic pattern. The method and the apparatus for magnetic transfer according to the present invention are used to apply magnetic field for transfer by bringing the master carrier for magnetic transfer into contact with the slave medium, the master carrier having a magnetic layer formed on a portion corresponding to an information signal on surface of a substrate, and the slave medium being a magnetic recording medium for receiving magnetic transfer after performing initial DC magnetization by a magnetic field by more than 1.5 times higher than the coercive force Hcm of the slave medium under the condition that the slave medium is combined with the master carrier for magnetic transfer closely together, and a recording information on the master carrier for magnetic transfer is transferred by applying a magnetic field in opposite direction to the direction of the initial DC magnetization under the condition that the slave medium is combined with the master carrier for magnetic transfer closely together.
摘要翻译： 本发明提供一种用于磁转移的方法和用于磁转移的装置，通过该方法，可以通过磁传递将高质量的转印图案从用于磁转移的主载体传送到从属介质，而不管磁图案的位置如何 。 根据本发明的用于磁转移的方法和装置用于通过使用于磁传输的主载体与从属介质接触来施加用于传送的磁场，所述主载体具有形成在对应于 信息信号，从属介质是磁记录介质，用于在从属介质的矫顽力Hcm高出1.5倍以上的磁场进行初始DC磁化之后接收磁传递，条件是 从属介质与用于磁传递的主载体紧密结合在一起，并且在从属介质的条件下，通过在与初始DC磁化方向相反的方向上施加磁场来传送关于磁传递的主载波的记录信息 与主载体紧密结合在一起。
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5.发明申请MAGNETIC TRANSFER MASTER CARRIER, MAGNETIC TRANSFER METHOD, AND MAGNETIC RECORDING MEDIUM 失效磁性传输主载波，磁传输方法和磁记录介质公开(公告)号：US20090251814A1
公开(公告)日：2009-10-08
申请号：US12419652
申请日：2009-04-07
申请人： Yoichi Nishida , Hideyuki Kubota , Masakazu Nishikawa , Makoto Nagao , Ryuji Sugita , Takashi Komine
发明人： Yoichi Nishida , Hideyuki Kubota , Masakazu Nishikawa , Makoto Nagao , Ryuji Sugita , Takashi Komine
IPC分类号： G11B5/86
摘要： The present invention provides a magnetic transfer master carrier which forms a magnetic pattern corresponding to a pattern of information to be recorded on a perpendicular magnetic recording medium when a magnetic field is applied to the perpendicular magnetic recording medium, with the magnetic master carrier and the perpendicular magnetic recording medium closely attached to each other, the carrier including: a base material having convex portions on its surface, the convex portions being provided corresponding to the pattern of information; a magnetic layer deposited on at least top surfaces of the convex portions, and having perpendicular magnetic anisotropy; and a soft magnetic layer deposited on the surface of the magnetic layer.
摘要翻译： 本发明提供了一种磁传递主载体，当磁性载体和垂直磁性载体和垂直磁记录介质施加磁场时，形成对应于待记录在垂直磁记录介质上的信息图形的磁图案 所述载体包括：在其表面上具有凸起部分的基材，所述凸部相应于所述信息图案设置; 沉积在所述凸部的至少顶表面上并具有垂直磁各向异性的磁性层; 以及沉积在磁性层的表面上的软磁性层。
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公开(公告)号：US20090244747A1
公开(公告)日：2009-10-01
申请号：US12410722
申请日：2009-03-25
IPC分类号： G11B5/86
摘要： To provide a magnetic transfer master carrier obtained by forming a perpendicular magnetic anisotropy magnetic layer over a surface of an original master which has a concavo-convex pattern, placing a base material against the formed perpendicular magnetic anisotropy magnetic layer, and separating the base material.
摘要翻译： 为了提供通过在具有凹凸图案的原始母板的表面上形成垂直磁各向异性磁性层而获得的磁转移主载体，将基材放置在形成的垂直磁各向异性磁性层上，并分离基材。
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7.发明授权Master medium for magnetic transfer including metal disk with relief or recess pattern 失效用于磁转移的主介质，包括具有浮雕或凹槽图案的金属盘公开(公告)号：US06759183B2
公开(公告)日：2004-07-06
申请号：US10425598
申请日：2003-04-30
IPC分类号： G11B566
CPC分类号： G11B5/86 , B82Y10/00 , G11B5/59633 , G11B5/743 , G11B5/82 , G11B5/865 , G11B23/0071 , Y10S430/146
摘要： A master medium for use in magnetic transfer of information includes a metal disk which has a first relief or recess pattern representing the information. The metal disk is produced by exposing a photoresist film formed on a base disk with a laser or electron beam modulated with the information while rotating the base disk; developing the photoresist film so as to form an original disk having a second relief or recess pattern; depositing metal on the original disk so as to mold the metal disk on the original disk; and removing the metal disk from the original disk.
摘要翻译： 用于信息磁传递的主介质包括具有表示信息的第一浮雕或凹槽图案的金属盘。 通过在旋转基盘的同时用激光或电子束调制形成在基盘上的光致抗蚀剂膜来制造金属盘; 显影光致抗蚀剂膜以形成具有第二凹凸图案的原始盘; 在原始磁盘上放置金属，以便在原始磁盘上模制金属磁盘; 并从原始磁盘移除金属磁盘。
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8.发明授权公开(公告)号：US07385774B2
公开(公告)日：2008-06-10
申请号：US11087649
申请日：2005-03-24
申请人： Masakazu Nishikawa , Makoto Nagao
发明人： Masakazu Nishikawa , Makoto Nagao
IPC分类号： G11B5/86
CPC分类号： B82Y10/00 , G11B5/59688 , G11B5/743 , G11B5/865
摘要： A master information carrier for magnetic transfer bears uneven signal patterns on its surface. When the minimum bit length in the uneven signal patterns is Bmin, dummy uneven patterns are provided in a depression of the uneven signal patterns, which has a length of 4Bmin or longer in the direction along a track. When magnetic transfer is performed, magnetized patterns corresponding to the dummy uneven patterns are transferred onto a slave medium. The magnetized patterns are patterns which will not be recognized as reproduction signals at a drive, into which the slave medium after magnetic transfer will be loaded.
摘要翻译： 用于磁转移的主信息载体在其表面上具有不均匀的信号图案。 当不均匀信号图案中的最小位长度为B 时，在不均匀信号图案的凹陷中提供虚设不均匀图案，其长度为4B分钟或 沿着轨道的方向更长。 当进行磁转移时，对应于虚拟不均匀图案的磁化图案被转移到从属介质上。 磁化图案是在驱动器处将不被识别为再现信号的图案，磁传输之后的从介质将被加载到该驱动器中。
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公开(公告)号：US06906875B2
公开(公告)日：2005-06-14
申请号：US10144024
申请日：2002-05-14
申请人： Akito Kamatani , Masakazu Nishikawa , Makoto Nagao , Kazunori Komatsu , Tsuneo Inui , Kazuhiro Niitsuma
发明人： Akito Kamatani , Masakazu Nishikawa , Makoto Nagao , Kazunori Komatsu , Tsuneo Inui , Kazuhiro Niitsuma
CPC分类号： G11B5/865 , G11B23/505 , G11B2005/001
摘要： A magnetic transfer device for bringing a master carrier with information and a slave medium into intimate contact with each other and then applying a transfer field to transfer the information to the slave medium. The master carrier has an inclined face on its radially outer end. After the magnetic transfer of the information, claws are inserted in the gas formed by the inclined face of the master carrier and the slave medium. The slave medium held in intimate contact with the master carrier is separated from the master carrier by lifting the slave medium with the claws.
摘要翻译： 一种用于使具有信息的主载波与从属介质彼此紧密接触，然后施加传送场以将信息传送到从属介质的磁传输装置。 主托架在其径向外端具有倾斜面。 在信息的磁传递之后，将爪插入由主载体和从属介质的倾斜面形成的气体中。 与主托架保持紧密接触的从属介质通过用爪提起从属介质与主托架分离。
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10.发明授权Magnetic transferring method, and method and apparatus for cleaning magnetic transfer master medium 失效磁转移方法，以及用于清洗磁转移主介质的方法和装置公开(公告)号：US06865038B2
公开(公告)日：2005-03-08
申请号：US09994891
申请日：2001-11-28
申请人： Masakazu Nishikawa , Makoto Nagao
发明人： Masakazu Nishikawa , Makoto Nagao
CPC分类号： G11B5/865 , G11B5/596 , G11B5/84 , G11B23/505
摘要： In the magnetic transferring method for magnetically transferring an information signal such as a servo signal from the master medium to the slave medium, when magnetic transfer is performed by bringing a master medium and a slave medium into close contact with each other, the master medium bearing an information signal and the slave medium having a lubricating layer formed on the surface of its recording plane during use, and applying a transfer magnetic field, the magnetic transfer is performed by bringing the slave medium before the formation of the lubricating layer and the master medium into close contact with each other. Thus, the separation of the slave medium from the master medium after the magnetic transfer is facilitated, and the adsorption of dust on the slave medium is prevented.
摘要翻译： 在用于将诸如伺服信号的信息信号从主介质磁传送到从属介质的磁转移方法中，当通过使主介质和从属介质彼此紧密接触进行磁传输时，主介质轴承 信息信号和从属介质，其在使用期间在其记录面的表面上形成有润滑层，并施加转移磁场，通过在形成润滑层和主介质之前使从属介质进行磁转移 彼此紧密接触。 因此，便于磁传送后从属介质与主介质的分离，并且防止灰尘在从属介质上的吸附。
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