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。

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。

公开(公告)号：US20090128958A1

公开(公告)日：2009-05-21

申请号：US12275284

申请日：2008-11-21

申请人： Yoichi NISHIDA ,  Masakazu Nishikawa ,  Hideyuki Kubota ,  Ryuji Sugita ,  Takashi Komine

发明人： Yoichi NISHIDA ,  Masakazu Nishikawa ,  Hideyuki Kubota ,  Ryuji Sugita ,  Takashi Komine

IPC分类号： G11B5/82

CPC分类号： G11B5/865 ,  G11B5/855

摘要： A magnetic transfer master substrate for transferring magnetic information thereof to a perpendicular recording magnetic recording medium in contact therewith under application of a magnetic field comprises a transfer surface area with a magnetic layer formed thereon in a pattern according to the magnetic information to be transferred to the perpendicular magnetic recording medium and a non-transfer surface area laying below said transfer surface area, wherein the magnetic layer has a perpendicular magnetic anisotropy of an anisotropy energy higher than 4×106 erg/cm3.

摘要翻译： 用于将磁信息传送到与施加磁场接触的垂直记录磁记录介质的磁转移母板基板包括根据要传送到 垂直磁记录介质和放置在所述转印表面区域之下的非转印表面区域，其中所述磁性层具有高于4×10 6 erg / cm 3的各向异性能的垂直磁各向异性。

公开(公告)号：US20080014456A1

公开(公告)日：2008-01-17

申请号：US11857174

申请日：2007-09-18

申请人： Masakazu Nishikawa ,  Seiji Kasahara

发明人： Masakazu Nishikawa ,  Seiji Kasahara

IPC分类号： 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：US07296478B2

公开(公告)日：2007-11-20

申请号：US11366411

申请日：2006-03-03

申请人： Masakazu Nishikawa ,  Naoto Fujiwara

发明人： Masakazu Nishikawa ,  Naoto Fujiwara

IPC分类号： G01L5/28 ,  G11B5/86 ,  G11B5/64

CPC分类号： B82Y10/00 ,  G11B5/743 ,  G11B5/82 ,  G11B5/865 ,  G11B33/10 ,  Y10T428/31808

摘要： In a master carrier for magnetic transfer which comprises a support that has a transfer-recording pattern arrayed in the track direction thereof in accordance with the information to be transferred to a magnetic recording medium, and a magnetic layer formed on the transfer-recording pattern of the support, the in-plane distance L (mm) between the hill and the valley of the warped master carrier, the vertical-direction distance H (μm) between the two, and the thickness d (mm) of the master carrier are so defined that they satisfy a relation of 0.05≦H·d3/L≦0.6.

摘要翻译： 在用于磁转移的主载体中，包括具有根据要传送到磁记录介质的信息沿其轨道方向排列的转印记录图案的支架，以及形成在转印记录图案上的磁性层 支撑件，翘曲主托架的山丘与山谷之间的平面间距离L（mm），两者之间的垂直方向距离H（母马）和主托架的厚度d（mm）是如此 定义为满足0.05 <= HD 3 / L <= 0.6的关系。

公开(公告)号：US07079335B2

公开(公告)日：2006-07-18

申请号：US11109710

申请日：2005-04-20

申请人： Kazunori Komatsu ,  Masakazu Nishikawa

发明人： Kazunori Komatsu ,  Masakazu Nishikawa

IPC分类号： G11B5/86

CPC分类号： G11B5/865 ,  G11B5/59633 ,  G11B5/82

摘要： A favorable magnetic transfer is, performed on a perpendicular magnetic recording medium. A permanent magnet apparatus provided with two permanent magnets, each having a width extending the length of the radial direction of a discoid magnetic recording medium, is used as a transfer magnetic field generating means. A conjoined body formed of the perpendicular magnetic recording medium, which has been initially magnetized unidirectionally in the direction perpendicular to the track surface thereof, and two master mediums, disposed on respective surfaces of the slave medium, is inserted between the permanent magnets. A rotating means rotates the conjoined body, in the direction along the tracks of the slave medium, while a transfer magnetic field is applied to the conjoined body in the direction substantially opposite that in which the initial magnetization of the magnetic layer of magnetic recording medium has been performed, so as to perform the magnetic transfer.

摘要翻译： 在垂直磁记录介质上进行有利的磁转移。 具有两个永久磁铁的永久磁铁装置用作转移磁场产生装置，每个永磁体具有延伸盘形磁记录介质径向长度的宽度。 由垂直磁记录介质形成的连接体被插入在永磁体之间，该垂直磁记录介质最初在与其轨道表面垂直的方向上单向磁化，并且设置在从属介质的相应表面上的两个主介质。 旋转装置沿着从属介质的轨道的方向旋转结合体，同时传递磁场以与磁记录介质的磁性层的初始磁化强度基本相反的方向施加到结合体 进行磁转移。

公开(公告)号：US20050213237A1

公开(公告)日：2005-09-29

申请号：US11127237

申请日：2005-05-12

申请人： Akito Kamatani ,  Tsuneo Inui ,  Masashi Aoki ,  Masakazu Nishikawa

发明人： Akito Kamatani ,  Tsuneo Inui ,  Masashi Aoki ,  Masakazu Nishikawa

IPC分类号： G11B5/86 ,  G11B23/50

CPC分类号： G11B23/505 ,  G11B5/865

摘要： A magnetic transfer wherein the exchange of master mediums is made easy to perform is provided, whereby the operational efficiency and transfer efficiency are improved, leading to an overall improvement in productivity in the manufacture of preformatted slave mediums. A master fixing base for determining and supporting the position of a master medium, which bears transfer data, and a conjoining apparatus for conjoining the master medium and the slave medium that is to receive the transfer therefrom are provided. The master medium is exchanged along with the master fixing base. It is preferable that a cleaning means be provided.

公开(公告)号：US06906874B2

公开(公告)日：2005-06-14

申请号：US10121679

申请日：2002-04-15

申请人： Akito Kamatani ,  Tsuneo Inui ,  Masashi Aoki ,  Masakazu Nishikawa

发明人： Akito Kamatani ,  Tsuneo Inui ,  Masashi Aoki ,  Masakazu Nishikawa

IPC分类号： G11B5/86 ,  G11B23/50

CPC分类号： G11B23/505 ,  G11B5/865

摘要： A magnetic transfer wherein the exchange of master mediums is made easy to perform is provided, whereby the operational efficiency and transfer efficiency are improved, leading to an overall improvement in productivity in the manufacture of preformatted slave mediums. A master fixing base for determining and supporting the position of a master medium, which bears transfer data, and a conjoining apparatus for conjoining the master medium and the slave medium that is to receive the transfer therefrom are provided. The master medium is exchanged along with the master fixing base. It is preferable that a cleaning means be provided.

摘要翻译： 提供了使主介质的更换变得容易执行的磁转移，从而提高了操作效率和转印效率，从而总体上提高了预格式从属介质的制造中的生产率。 提供了用于确定和支持承载传送数据的主介质的位置的主固定基座以及用于结合主介质和从属介质的用于接收其的从属介质的联结装置。 主介质与主固定底座一起更换。 优选的是提供清洁装置。

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。