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1. 发明授权

US07385774B2 Master information carrier for magnetic transfer, magnetic transfer method, and magnetic recording medium 失效
标题翻译：磁传输主磁信号载体，磁转移方式和磁记录介质
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。

2. 发明授权

US06906875B2 Magnetic transfer device 失效
标题翻译：磁转移装置
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
IPC分类号： G11B5/00 , G11B5/86 , G11B23/50
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。

3. 发明授权

US06865038B2 Magnetic transferring method, and method and apparatus for cleaning magnetic transfer master medium 失效
标题翻译：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
IPC分类号： G11B5/596 , G11B5/84 , G11B5/86 , G11B23/50
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。

4. 发明授权

US06833173B1 Floppy disk including a seed layer and a primer layer with specified relative properties 失效
标题翻译：软盘包括种子层和具有特定相对性质的底漆层
公开(公告)号：US06833173B1
公开(公告)日：2004-12-21
申请号：US09670616
申请日：2000-09-27
申请人： Masakazu Nishikawa , Makoto Nagao
发明人： Masakazu Nishikawa , Makoto Nagao
IPC分类号： G11B566
CPC分类号： G11B5/732 , G11B5/656 , G11B5/7325 , Y10T428/2495 , Y10T428/265 , Y10T428/266 , Y10T428/269 , Y10T428/31721 , Y10T428/31725
摘要： A magnetic recording medium, which comprises a flattening layer with a thickness of 0.1-5.0 &mgr;m, a seed layer, a nonmagnetic primer layer containing chromium with a chromium concentration of 77-100 atom %, a Co—Cr type alloy magnetic layer, a protective layer, and a lubricating layer coated sequentially on at least one of the surfaces of a flexible nonmagnetic support member, whereby the seed layer is designed in such a manner that the linear expansion coefficient (ESE) of the seed layer and the linear expansion coefficient (EUL) of the nonmagnetic primer layer satisfy the relation: |ESE−EUL|/EUL 1.
摘要翻译：一种磁记录介质，其包括厚度为0.1-5.0μm的压平层，种子层，含铬浓度为77-100原子％的铬的非磁性底漆层，Co-Cr型合金磁性层，保护层和润滑层，其依次涂覆在柔性非磁性支撑构件的至少一个表面上，由此种子层被设计成使种子层的线性膨胀系数（ESE）和线性膨胀系数（EUL）满足关系：| ESE-EUL | / EUL <0.3，种子层的拉伸强度（SSE）和非磁性底漆层的拉伸强度（SUL）满足关系式：SSE / SUL> 1。

5. 发明授权

US06636371B1 Magnetic transfer method and system 失效
标题翻译：磁转移方式及系统
公开(公告)号：US06636371B1
公开(公告)日：2003-10-21
申请号：US09558326
申请日：2000-04-26
申请人： Kazunori Komatsu , Makoto Nagao , Masakazu Nishikawa
发明人： Kazunori Komatsu , Makoto Nagao , Masakazu Nishikawa
IPC分类号： G11B586
CPC分类号： G11B5/865
摘要： The invention provides a magnetic transfer method in which a magnetic transfer master carrier having a magnetic layer at a surface portion of a substrate having an information signal is brought in contact with a magnetic recording medium that is an associated slave medium and a transfer magnetic field is applied to the slave medium. The coercive force Hcs of the slave magnetic recording medium and the transfer magnetic field satisfies the relation: 0.6×Hcs≦transfer magnetic field≦1.3×Hcs
摘要翻译：本发明提供一种磁转移方法，其中在具有信息信号的基板的表面部分具有磁性层的磁转移主载体与作为相关联的从动介质的磁记录介质和转印磁场接触应用于从属媒体。从属磁记录介质的矫顽力Hcs和转移磁场满足关系：0.6xHcs <=传递磁场<= 1.3XHCS

6. 发明申请

US20090251814A1 MAGNETIC TRANSFER MASTER CARRIER, MAGNETIC TRANSFER METHOD, AND MAGNETIC RECORDING MEDIUM 失效
标题翻译：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
CPC分类号： G11B5/865 , B82Y10/00 , G11B5/743
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。

7. 发明申请

US20090244747A1 MAGNETIC TRANSFER MASTER CARRIER AND METHOD FOR PRODUCING THE SAME 审中-公开
标题翻译：磁转移主载体及其制造方法
公开(公告)号：US20090244747A1
公开(公告)日：2009-10-01
申请号：US12410722
申请日：2009-03-25
申请人： Masakazu Nishikawa , Hideyuki Kubota , Makoto Nagao , Ryuji Sugita , Takashi Komine
发明人： Masakazu Nishikawa , Hideyuki Kubota , Makoto Nagao , Ryuji Sugita , Takashi Komine
IPC分类号： G11B5/86
CPC分类号： G11B5/865 , B82Y10/00 , G11B5/743 , G11B5/855
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。

8. 发明授权

US06829201B2 Magnetic information recording medium having regions magnetized in different directions, a method for recording and reproducing for the same, and a method of manufacturing the same 失效
标题翻译：具有沿不同方向磁化的区域的磁信息记录介质及其记录和再现方法及其制造方法
公开(公告)号：US06829201B2
公开(公告)日：2004-12-07
申请号：US10023832
申请日：2001-12-21
申请人： Masakazu Nishikawa , Kazuyuki Usuki , Yoshihisa Usami , Makoto Nagao
发明人： Masakazu Nishikawa , Kazuyuki Usuki , Yoshihisa Usami , Makoto Nagao
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。

9. 发明授权

US06759183B2 Master medium for magnetic transfer including metal disk with relief or recess pattern 失效
标题翻译：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
申请人： Makoto Nagao , Seiichi Watanabe , Masakazu Nishikawa
发明人： Makoto Nagao , Seiichi Watanabe , Masakazu Nishikawa
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。

10. 发明授权

US06643079B1 Method and apparatus for magnetic transfer 失效
标题翻译：用于磁转移的方法和装置
公开(公告)号：US06643079B1
公开(公告)日：2003-11-04
申请号：US09558336
申请日：2000-04-26
申请人： Kazunori Komatsu , Makoto Nagao , Masakazu Nishikawa
发明人： Kazunori Komatsu , Makoto Nagao , Masakazu Nishikawa
IPC分类号： G11B586
CPC分类号： G11B5/865
摘要： The present invention provides a method for magnetic transfer, said method comprising the steps of arranging permanent magnets each having magnetic field symmetrical to the axis of the magnetic pole at least on one of upper or lower surfaces of the slave medium with the axis of the magnetic pole disposed in parallel to the surface of the slave medium, rotating the slave medium or the permanent magnet in track direction, performing initial DC magnetization on the slave medium in advance in track direction, bringing the master carrier for magnetic transfer closely together with the slave medium processed by said initial DC magnetization, and performing magnetic transfer by applying magnetic field for transfer in track direction reverse to the direction of the initial DC magnetization on the surface of the slave medium.
摘要翻译：本发明提供一种磁转移方法，所述方法包括以下步骤：在从属介质的上表面或下表面中的至少一个上配置磁性体，每个永磁体具有与磁极的轴对称的磁场，磁极设置成平行于从动介质的表面，在磁道方向上旋转从属介质或永久磁铁，在磁带方向上预先在从属介质上执行初始直流磁化，使主载体磁传递紧密地与从属通过所述初始DC磁化进行介质处理，并且通过在与从属介质的表面上的初始DC磁化方向相反的磁道方向上施加磁场来进行磁传输。

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