公开(公告)号：US09224414B2

公开(公告)日：2015-12-29

申请号：US12438091

申请日：2007-08-22

申请人： Masato Fukushima ,  Akira Sakawaki ,  Katsumasa Hirose

发明人： Masato Fukushima ,  Akira Sakawaki ,  Katsumasa Hirose

IPC分类号： B44C1/22 ,  G11B5/855

CPC分类号： G11B5/855

摘要： A method for manufacturing a magnetic recording medium includes the steps of depositing a magnetic layer on at least one of surfaces of a nonmagnetic substrate and injecting atoms partially in the magnetic layer, thereby demagnetizing parts having admitted the injected atoms or imparting amorphousness thereto, to form a magnetically separated magnetic recording pattern. The step of injecting includes the steps of applying resist to the at least one surface subsequent to the step of depositing, partially decreasing a thickness of the resist and irradiating a surface of the resist with atoms, thereby inducing partial injection of the atoms to the magnetic layer through portions of the resist decreased in thickness.

摘要翻译： 一种制造磁记录介质的方法包括以下步骤：在非磁性基板的至少一个表面上沉积磁性层，并将原子部分地注入到磁性层中，从而使承载了注入原子的部分或赋予其无定形的部件退磁，形成 磁分离磁记录图案。 注入步骤包括以下步骤：在沉积步骤之后，将抗蚀剂施加到至少一个表面上，部分地减小抗蚀剂的厚度并用原子照射抗蚀剂的表面，由此引起原子部分注入磁性 抗蚀剂层的一部分厚度减小。

公开(公告)号：US20100196596A1

公开(公告)日：2010-08-05

申请号：US12677704

申请日：2008-09-12

申请人： Katsumasa Hirose ,  Akira Sakawaki ,  Masato Fukushima

发明人： Katsumasa Hirose ,  Akira Sakawaki ,  Masato Fukushima

IPC分类号： B05D1/02 ,  B05C5/00 ,  B05C11/02

CPC分类号： G11B5/842

摘要： Provided are a double-sided coating apparatus and a method for double-sided coating with a coating solution configured to uniformly apply a coating solution to both surfaces of a substrate having a central opening in a simple process while preventing ingress of the coating solution to the central opening. A coating apparatus 1 according to the invention applies a coating solution to both main surfaces of a substrate 2 having a central opening 2a. The coating apparatus 1 includes: a rotation driving mechanism 3 with a chuck 11 which holds the substrate 2 by blocking the central opening 2a; a first coating solution nozzle 18 which ejects a coating solution to a first main surface of the substrate 2; a first pivot driving mechanism 17 which operates the first coating solution nozzle 18 to move to scan the first main surface of the substrate 2; a second coating solution nozzle 28 which ejects the coating solution to a second main surface of the substrate 2; a second pivot driving mechanism 31 which operates the second coating solution nozzle 28 to move to scan the second main surface of the substrate 3, and a device to independently control an ejection amount of the coating solution from the first coating solution ejection port 23 and an ejection amount of the coating solution from the second coating solution ejection port 29.

摘要翻译： 提供了一种双面涂布装置和一种双面涂布方法，其中涂布溶液被配置为在简单的工艺中均匀地将涂布溶液涂覆到具有中心开口的基板的两个表面上，同时防止涂布溶液进入 中央开放。 根据本发明的涂布设备1将涂布溶液涂覆到具有中心开口2a的基底2的两个主表面上。 涂布装置1包括：具有卡盘11的旋转驱动机构3，卡盘11通过阻挡中心开口2a而保持基板2; 第一涂布溶液喷嘴18，其将涂布溶液喷射到基板2的第一主表面; 第一枢转驱动机构17，其操作第一涂布液喷嘴18移动以扫描基板2的第一主表面; 第二涂布溶液喷嘴28，其将涂布溶液喷射到基板2的第二主表面; 第二枢转驱动机构31，其操作第二涂布液喷嘴28移动以扫描基板3的第二主表面;以及独立地控制涂布溶液从第一涂布液喷射口23的喷射量的装置和 从第二涂布液喷出口29喷射涂布液的量。

公开(公告)号：US20100053797A1

公开(公告)日：2010-03-04

申请号：US12438091

申请日：2007-08-22

申请人： Masato Fukushima ,  Akira Sakawaki ,  Katsumasa Hirose

发明人： Masato Fukushima ,  Akira Sakawaki ,  Katsumasa Hirose

IPC分类号： G11B21/02 ,  B05D5/12 ,  G11B5/127

CPC分类号： G11B5/855

摘要： A method for manufacturing a magnetic recording medium includes the steps of depositing a magnetic layer on at least one of surfaces of a nonmagnetic substrate and injecting atoms partially in the magnetic layer, thereby demagnetizing parts having admitted the injected atoms or imparting amorphousness thereto, to form a magnetically separated magnetic recording pattern. The step of injecting includes the steps of applying resist to the at least one surface subsequent to the step of depositing, partially decreasing a thickness of the resist and irradiating a surface of the resist with atoms, thereby inducing partial injection of the atoms to the magnetic layer through portions of the resist decreased in thickness.

摘要翻译： 一种制造磁记录介质的方法包括以下步骤：在非磁性基板的至少一个表面上沉积磁性层，并将原子部分地注入到磁性层中，从而使承载了注入原子的部分或赋予其无定形的部件退磁，形成 磁分离磁记录图案。 注入步骤包括以下步骤：在沉积步骤之后，将抗蚀剂施加到至少一个表面上，部分地减小抗蚀剂的厚度并用原子照射抗蚀剂的表面，由此引起原子部分注入磁性 抗蚀剂层的一部分厚度减小。

公开(公告)号：US20110199700A1

公开(公告)日：2011-08-18

申请号：US12375497

申请日：2007-07-30

申请人： Katsumasa Hirose ,  Akira Sakawaki ,  Masato Fukushima

发明人： Katsumasa Hirose ,  Akira Sakawaki ,  Masato Fukushima

IPC分类号： G11B5/02 ,  B05D5/12

CPC分类号： G11B5/855

摘要： A process for producing a magnetic recording medium which can increase significantly yield and productivity is provided. Such a process for producing a magnetic recording medium includes a resist layer forming step which includes an immersing step of immersing a part of a non-magnetic substrate 31 in a resist solution 11 so that an inner circular domain 3 of an opening part is arranged above a liquid surface 11a of the resist solution 11 and a part of a data recording domain 4 is arranged under the liquid surface 11a of the resist solution 11, and a taking out step of taking the non-magnetic substrate 31 out from the resist solution 11, while rotating the non-magnetic substrate 31 immersed in the resist solution 11 around a rotation axis 37a extending in the direction of the thickness of the non-magnetic substrate 31 through the center of an opening part 37.

摘要翻译： 提供一种能够显着提高产量和生产率的磁记录介质的制造方法。 这种制造磁记录介质的方法包括抗蚀剂层形成步骤，其包括将非磁性基材31的一部分浸渍在抗蚀剂溶液11中的浸渍步骤，使得开口部分的内圆形区域3布置在 抗蚀剂溶液11的液面11a和数据记录区域4的一部分配置在抗蚀剂溶液11的液面11a的下方，从非抗蚀剂溶液11中取出非磁性基板31的取出工序 同时旋转浸没在抗蚀剂溶液11中的非磁性基板31绕着通过开口部分37的中心在非磁性基板31的厚度方向上延伸的旋转轴线37a。

公开(公告)号：US20100277829A1

公开(公告)日：2010-11-04

申请号：US12810772

申请日：2008-12-24

申请人： Masato Fukushima ,  Akira Sakawaki ,  Akira Yamane

发明人： Masato Fukushima ,  Akira Sakawaki ,  Akira Yamane

IPC分类号： G11B21/02 ,  G11B5/84

CPC分类号： G11B5/855 ,  G11B5/66 ,  H01F41/34

摘要： A method for producing a magnetic recording medium having a magnetically partitioned magnetic recording pattern on at least one surface of a nonmagnetic substrate, characterized by comprising a step of reacting portions of a magnetic layer, formed on the non-magnetic substrate, with ozone to modify magnetic properties of said portions of the magnetic layer for forming the magnetically partitioned magnetic recording pattern. The magnetic layer can be a two-layer structure comprising a magnetic layer having a granular structure and formed thereon a magnetic layer having a non-granular structure. The produced magnetic recording medium exhibits a greatly enhanced recording density while recording/reproducing characteristics equal to or better than those of the heretofore proposed magnetic recording mediums are maintained, and it can be produced with an enhanced efficiency.

摘要翻译： 一种在非磁性基板的至少一个表面上制造具有磁分区磁记录图案的磁记录介质的方法，其特征在于包括使形成在非磁性基板上的磁性层的部分与臭氧反应的步骤， 用于形成磁分区磁记录图案的磁性层的所述部分的磁特性。 磁性层可以是包括具有颗粒结构的磁性层的两层结构，并且在其上形成具有非粒状结构的磁性层。 所制造的磁记录介质表现出大大增强的记录密度，同时保持等于或优于以前提出的磁记录介质的记录/再现特性，并且可以以提高的效率生产。

公开(公告)号：US09064520B2

公开(公告)日：2015-06-23

申请号：US13478739

申请日：2012-05-23

申请人： Tetsuya Osaka ,  Atsushi Sugiyama ,  Takuma Hachisu ,  Tomoo Shige ,  Masato Fukushima ,  Akira Yamane ,  Akira Sakawaki

发明人： Tetsuya Osaka ,  Atsushi Sugiyama ,  Takuma Hachisu ,  Tomoo Shige ,  Masato Fukushima ,  Akira Yamane ,  Akira Sakawaki

IPC分类号： G11B5/706 ,  G11B5/82 ,  G11B5/73 ,  G11B5/66 ,  G11B5/65 ,  G11B5/84

CPC分类号： G11B5/7325 ,  G11B5/65 ,  G11B5/656 ,  G11B5/66 ,  G11B5/8404 ,  G11B5/855

摘要： According to the present invention, a magnetic recording medium is provided including a disk-shaped non-magnetic substrate and at least a perpendicular magnetic layer formed on the disk-shaped non-magnetic substrate, wherein the perpendicular magnetic layer has a structure in which an FePt or CoPt nanoparticle array is formed on a formation surface, on which a plurality of striations each having a circumferential directional component are formed, by a texturing treatment; a manufacturing method thereof; and a magnetic record/reproduction apparatus including the magnetic recording medium or a magnetic recording medium manufactured according to the manufacturing method.

摘要翻译： 根据本发明，提供一种磁记录介质，其包括盘状非磁性基板和至少形成在盘状非磁性基板上的垂直磁性层，其中垂直磁性层具有以下结构： FePt或CoPt纳米颗粒阵列形成在形成表面上，通过纹理处理形成多个具有圆周方向分量的条纹; 其制造方法; 以及包括根据制造方法制造的磁记录介质或磁记录介质的磁记录/再现设备。

公开(公告)号：US20100053813A1

公开(公告)日：2010-03-04

申请号：US12515370

申请日：2007-11-21

申请人： Masato Fukushima ,  Akira Sakawaki

发明人： Masato Fukushima ,  Akira Sakawaki

IPC分类号： G11B5/74 ,  B29C43/00 ,  C23F1/00

CPC分类号： G11B5/855 ,  C23C14/0005 ,  C23C14/48 ,  H01F41/34

摘要： A method for manufacturing a magnetic recording medium (30) having magnetically separate magnetic recording patterns on at least one surface of a nonmagnetic substrate (1), includes the steps of forming a magnetic layer (2) on the nonmagnetic substrate, forming a mask layer (3) on the magnetic layer, forming a resist layer (4) on the mask layer, transferring negative patterns of the magnetic recording patterns to the resist layer using a stamp (5), removing portions of the mask layer which correspond to the negative patterns of the magnetic recording patterns, implanting ions in the magnetic layer from a resist layer-side surface to partly demagnetize the magnetic layer, and removing the resist layer and the mask layer. A magnetic recording and reproducing apparatus includes the above magnetic recording medium (30), a driving section (11) that drives the magnetic recording medium in a recording direction, a magnetic head (27) including a recording section and a reproducing section, a device (28) for moving the magnetic head relative to the magnetic recording medium, and recording and reproducing signal processing device (29) for inputting a signal to the magnetic bead and reproducing an output signal from the magnetic head.

摘要翻译： 一种制造在非磁性基板（1）的至少一个表面上具有磁性分离的磁记录图案的磁记录介质（30）的方法包括以下步骤：在非磁性基板上形成磁性层（2），形成掩模层 （3）在磁性层上，在掩模层上形成抗蚀剂层（4），使用印模（5）将磁记录图案的负图案转印到抗蚀剂层上，去除对应于阴性的掩模层的部分 磁记录图案的图案，从抗蚀剂层侧表面在磁性层​​中注入离子以使磁性层部分地退磁，以及去除抗蚀剂层和掩模层。 磁记录和再现装置包括上述磁记录介质（30），驱动磁记录介质的记录方向的驱动部分（11），包括记录部分和再现部分的磁头（27） （28），用于相对于磁记录介质移动磁头;以及记录和再现用于向磁珠输入信号并再现来自磁头的输出信号的信号处理装置（29）。

公开(公告)号：US08394514B2

公开(公告)日：2013-03-12

申请号：US12745879

申请日：2008-11-28

申请人： Masato Fukushima ,  Akira Sakawaki ,  Akira Yamane

发明人： Masato Fukushima ,  Akira Sakawaki ,  Akira Yamane

IPC分类号： G11B5/64

CPC分类号： G11B5/855 ,  H01F41/34

摘要： A method for producing a magnetic recording medium having a magnetically partitioned magnetic recording pattern on a surface of a nonmagnetic substrate, which comprises the following steps. Step (A) of forming a magnetic layer on a non-magnetic substrate, step (B) of forming a carbon layer on the magnetic layer, step (C) of forming a resist layer on the carbon layer, step (D) of forming a negative pattern of magnetic recording pattern on the resist layer, step (E) of removing the portions of resist layer and carbon layer in regions corresponding to the negative pattern, step (F) of removing at least a surface layer portion of the magnetic layer in the regions corresponding to the negative pattern, and optional step (G) of removing the residual resist layer and carbon layer. The produced magnetic recording medium has a recording/reproducing property equal to or better than conventional ones and exhibits a high recording density.

摘要翻译： 一种在非磁性基板的表面上制造具有磁分割磁记录图案的磁记录介质的方法，包括以下步骤。 在非磁性基板上形成磁性层的步骤（A），在磁性层上形成碳层的步骤（B），在碳层上形成抗蚀剂层的步骤（C），形成步骤（D） 抗蚀剂层上的磁记录图案的负图案，在除去负图案的区域中去除抗蚀剂层和碳层的部分的步骤（E），步骤（F）至少去除磁性层的表层部分 在对应于负图案的区域中，以及去除残留抗蚀剂层和碳层的任选步骤（G）。 所制造的磁记录介质具有等于或优于常规磁记录介质的记录/再现性能并且具有高记录密度。

公开(公告)号：US08336193B2

公开(公告)日：2012-12-25

申请号：US12671333

申请日：2008-07-24

申请人： Masato Fukushima ,  Akira Sakawaki ,  Akira Yamane

发明人： Masato Fukushima ,  Akira Sakawaki ,  Akira Yamane

IPC分类号： G11B5/127 ,  H04R31/00

CPC分类号： G11B5/855 ,  B82Y10/00 ,  G11B5/743 ,  G11B5/746 ,  G11B5/82 ,  G11B5/865 ,  Y10T29/49025 ,  Y10T29/4903 ,  Y10T29/49032

摘要： Provided is a process for making a magnetic recording medium having a magnetically partitioned magnetic recording patterns, which comprises the following three steps (1), (2) and (3), conducted in this order: (1) a step of forming a magnetic layer on a non-magnetic substrate; (2) a step of removing surface layer portions of regions for magnetically partitioning the magnetic layer; and (3) a step of exposing the thus-exposed regions of the magnetic layer, from which the surface layer portions have been removed, to a reactive plasma or a reactive ion, to modify the magnetic characteristics of the regions of magnetic layer, whereby a magnetic recording pattern is formed which are magnetically partitioned by the regions of magnetic layer having the modified characteristics. Thus, a magnetic recording medium having an enhanced recording density and minimizing letter bleeding at writing can be made with a high efficiency.

摘要翻译： 提供了一种制造具有磁分区磁记录图案的磁记录介质的方法，其包括以下三个步骤（1），（2）和（3）：按照以下顺序进行：（1）形成磁性的步骤 层在非磁性基板上; （2）去除用于磁性分隔磁性层的区域的表面层部分的步骤; 和（3）将表面层部分已经被除去的磁性层的这样暴露的区域暴露于反应性等离子体或反应离子的步骤，以改变磁性层区域的磁特性，由此 形成磁记录图案，磁记录图案被具有改进特性的磁性层的区域磁分隔。 因此，可以高效率地进行具有增强的记录密度和最小化写入时的字母泄漏的磁记录介质。

公开(公告)号：US08213118B2

公开(公告)日：2012-07-03

申请号：US12279214

申请日：2007-02-13

申请人： Masato Fukushima ,  Akira Sakawaki ,  Yasumasa Sasaki

发明人： Masato Fukushima ,  Akira Sakawaki ,  Yasumasa Sasaki

IPC分类号： G11B5/82

CPC分类号： G11B5/855 ,  B82Y10/00 ,  G11B5/743 ,  G11B5/82 ,  G11B5/865

摘要： A discrete track-type magnetic recording medium (30) includes a nonmagnetic substrate (1), a magnetic recording track and a servo signal pattern which are provided on at least one side of the nonmagnetic substrate, and a nonmagnetic part (4) consisting of a nonmagnetic alloy containing Si for physically separating the magnetic recording track and the servo signal pattern. A magnetic recording and reproducing device comprising, in combination, the magnetic recording medium (30), a driving part (26) serving to drive the magnetic recording medium in a direction of recording, a magnetic head (27) composed of a recording part and a reproducing part, a device (28) to impart motion to the magnetic head relative to the magnetic recording medium, and a recording and reproducing signal processing device (29) for entering a signal into the magnetic head and reproducing an output signal from the magnetic head.

摘要翻译： 离散轨道型磁记录介质（30）包括设置在非磁性基板的至少一侧的非磁性基板（1），磁记录轨道和伺服信号图案，以及由非磁性基板构成的非磁性部分（4） 含有用于物理分离磁记录轨道和伺服信号模式的Si的非磁性合金。 一种磁记录和再现装置，包括磁记录介质（30），用于在记录方向上驱动磁记录介质的驱动部分（26），由记录部分组成的磁头（27）和 再现部分，用于相对于磁记录媒体向磁头施加运动的装置（28）;以及记录和再现信号处理装置（29），用于将信号输入磁头并再现来自磁性的输出信号 头。