公开(公告)号：US20050042473A1

公开(公告)日：2005-02-24

申请号：US10916527

申请日：2004-08-12

申请人： Masakazu Nishikawa ,  Seiji Kasahara

发明人： Masakazu Nishikawa ,  Seiji Kasahara

IPC分类号： G11B5/00 ,  G11B5/012 ,  G11B5/596 ,  G11B5/82 ,  G11B5/86

CPC分类号： G11B5/865 ,  G11B5/012 ,  G11B5/59688 ,  G11B5/82 ,  G11B2005/001 ,  Y10T428/12

摘要： A process for producing a master carrier contains steps of: forming a desired pattern on a support to form a resist pattern support; forming a first ferromagnetic thin film on the resist pattern support by a vacuum film forming method; forming a third ferromagnetic thick film on the first ferromagnetic thin film by an electroplating; and peeling the support from the resist pattern support provided with the first ferromagnetic thin film and the third ferromagnetic thick film.

摘要翻译： 用于制造主载体的方法包括以下步骤：在载体上形成所需的图案以形成抗蚀剂图案载体; 通过真空成膜法在抗蚀剂图案载体上形成第一铁磁薄膜; 通过电镀在第一铁磁薄膜上形成第三铁磁厚膜; 以及从设置有第一铁磁性薄膜和第三铁磁性厚膜的抗蚀剂图案支持体剥离支撑体。

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。

公开(公告)号：US06785069B2

公开(公告)日：2004-08-31

申请号：US09942766

申请日：2001-08-31

申请人： Masakazu Nishikawa ,  Seiichi Watanabe

发明人： Masakazu Nishikawa ,  Seiichi Watanabe

IPC分类号： G11B586

CPC分类号： G11B5/865 ,  G11B5/82

摘要： The present invention provides a magnetic transfer method for transferring information by bringing a master carrier for magnetic transfer and a slave medium into close contact with each other and by applying a magnetic field for transfer, said master carrier comprising servo areas and data areas, said servo areas are convex, and difference of height between the data areas and the servo areas is within the range of 50-800 nm.

摘要翻译： 本发明提供一种用于通过使用于磁传输的主载波和从属介质彼此紧密接触并且通过施加用于传送的磁场来传送信息的磁传输方法，所述主载波包括伺服区和数据区，所述伺服 区域是凸的，数据区域和伺服区域之间的高度差在50-800nm的范围内。

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。

公开(公告)号：US06674645B2

公开(公告)日：2004-01-06

申请号：US09863260

申请日：2001-05-24

申请人： Tsunehiro Anzai ,  Kazuhiko Inoue ,  Masakazu Nishikawa ,  Kazuhisa Fujii

发明人： Tsunehiro Anzai ,  Kazuhiko Inoue ,  Masakazu Nishikawa ,  Kazuhisa Fujii

IPC分类号： H05K500

CPC分类号： H01P1/125 ,  H05K1/0219 ,  H05K1/183 ,  H05K3/42 ,  H05K2201/09809 ,  H05K2201/10356

摘要： A high frequency signal switching unit includes a printed circuit board accommodated in the casing and having a ground layer formed on substantially one entire surface thereof. Input and output terminals are mounted on the casing, and a high frequency relay is mounted on the printed circuit board for switching between the input terminal and the output terminal. The high frequency relay has a plurality of relay contact terminals and a grounding terminal. A plurality of coaxial cables having respective internal and external conductors connect the input and output terminals to the relay contact terminals. The grounding terminal of the high frequency relay and the external conductors of the coaxial cables are connected to the ground layer of the printed circuit board, while each of the internal conductors of the coaxial cables is connected to one of the relay contact terminals of the high frequency relay.

摘要翻译： 高频信号切换单元包括容纳在壳体中并具有基本上整个表面上的接地层的印刷电路板。 输入和输出端子安装在外壳上，高频继电器安装在印刷电路板上，用于在输入端子和输出端子之间切换。 高频继电器具有多个继电器触点端子和接地端子。 具有各自的内部和外部导体的多个同轴电缆将输入和输出端子连接到继电器触点端子。 高频继电器的接地端子和同轴电缆的外部导体连接到印刷电路板的接地层，而同轴电缆的每个内部导体都连接到高频继电器接点端子之一 频率继电器。

公开(公告)号：US06556448B2

公开(公告)日：2003-04-29

申请号：US09863260

申请日：2001-05-24

申请人： Tsunehiro Anzai ,  Kazuhiko Inoue ,  Masakazu Nishikawa ,  Kazuhisa Fujii

发明人： Tsunehiro Anzai ,  Kazuhiko Inoue ,  Masakazu Nishikawa ,  Kazuhisa Fujii

IPC分类号： H05K500

CPC分类号： H01P1/125 ,  H05K1/0219 ,  H05K1/183 ,  H05K3/42 ,  H05K2201/09809 ,  H05K2201/10356

摘要： A high frequency signal switching unit includes a printed circuit board accommodated in the casing and having a ground layer formed on substantially one entire surface thereof. Input and output terminals are mounted on the casing, and a high frequency relay is mounted on the printed circuit board for switching between the input terminal and the output terminal. The high frequency relay has a plurality of relay contact terminals and a grounding terminal. A plurality of coaxial cables having respective internal and external conductors connect the input and output terminals to the relay contact terminals. The grounding terminal of the high frequency relay and the external conductors of the coaxial cables are connected to the ground layer of the printed circuit board, while each of the internal conductors of the coaxial cables is connected to one of the relay contact terminals of the high frequency relay.