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1.发明申请METHOD FOR PRODUCING MAGNETIC RECORDING MEDIUM, AND MAGNETIC RECORDING/REPRODUCING APPARATUS 有权磁记录介质的制造方法以及磁记录/再现装置公开(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
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。
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公开(公告)号：US07252896B2
公开(公告)日：2007-08-07
申请号：US10788259
申请日：2004-02-27
申请人： Futoshi Nakamura , Takashi Hikosaka , Soichi Oikawa , Takeshi Iwasaki , Tomoyuki Maeda , Hiroshi Sakai , Kenji Shimizu , Akira Sakawaki
发明人： Futoshi Nakamura , Takashi Hikosaka , Soichi Oikawa , Takeshi Iwasaki , Tomoyuki Maeda , Hiroshi Sakai , Kenji Shimizu , Akira Sakawaki
IPC分类号： G11B5/66
CPC分类号： G11B5/732 , G11B5/667 , G11B5/7325
摘要： An orientation control layer having a granular structure is formed between a substrate and magnetic recording layer, contains a base material and grains dispersed in the base material, and having a thickness smaller than a grain size of the grains.
摘要翻译： 具有颗粒结构的取向控制层形成在基板和磁记录层之间，包含分散在基材中的基材和颗粒，其厚度小于晶粒的晶粒尺寸。
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3.发明申请公开(公告)号：US20060204791A1
公开(公告)日：2006-09-14
申请号：US10552445
申请日：2004-04-07
申请人： Akira Sakawaki , Kenji Shimizu , Kazuo Kobayashi , Hiroshi Sakai , Soichi Oikawa , Takeshi Iwasaki , Tomoyuki Maeda , Futoshi Nakamura
发明人： Akira Sakawaki , Kenji Shimizu , Kazuo Kobayashi , Hiroshi Sakai , Soichi Oikawa , Takeshi Iwasaki , Tomoyuki Maeda , Futoshi Nakamura
摘要： A magnetic recording medium which is provided on a nonmagnetic substrate 1 with at least an orientation-controlling layer 3 for controlling the orientation of a layer formed directly thereon, a perpendicularly magnetic layer 4 having an easily magnetizing axis oriented mainly perpendicularly relative to the nonmagnetic substrate 1, and a protective layer 5 and characterized in that the perpendicularly magnetic layer 4 includes two or more magnetic layers, that at least one of the magnetic layers is a layer 4a having Co as a main component and containing Pt as well and containing an oxide and that at least another of the magnetic layers is a layer 4b having Co as a main component and containing Cr as well and containing no oxide.
摘要翻译： 一种磁性记录介质，其设置在至少具有用于控制直接形成的层的取向的取向控制层3的非磁性基板1上，具有相对于非磁性基板主要垂直取向的易磁化轴的垂直磁性层4 1和保护层5，其特征在于，垂直磁性层4包括两个或更多个磁性层，至少一个磁性层是具有Co作为主要成分并且含有Pt的层4a，并且含有 并且至少另一个磁性层是具有Co作为主要成分并且含有Cr并且不含氧化物的层4b。
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4.发明授权公开(公告)号：US07083870B2
公开(公告)日：2006-08-01
申请号：US10617822
申请日：2003-07-14
CPC分类号： G11B5/667 , G11B5/65 , G11B5/7325 , G11B2005/0029
摘要： A magnetic recording medium includes a nonmagnetic substrate on which is provided at least a soft magnetic under-film, an orientation control film that controls an orientation of a film directly above, a perpendicular magnetic recording film having an axis of easy magnetization oriented to be mainly perpendicular to the substrate and a protective film, wherein the orientation control film has a material composition forming a C11b structure. The magnetic recording medium is manufactured by a method including carrying out, in order, at least a step of forming a soft magnetic under-film on a nonmagnetic substrate, a step of forming an orientation control film that controls an orientation of a film directly above, a step of forming a perpendicular magnetic recording film having an axis of easy magnetization oriented to be mainly perpendicular to the substrate, and a step of forming a protective film. A magnetic recording and reproduction apparatus includes the magnetic recording medium and a magnetic head that records and reproduces information on the magnetic recording medium, wherein the magnetic head is a magnetic monopole head.
摘要翻译： 磁记录介质包括至少设置有软磁性底膜的非磁性基板，控制正上方的膜的取向的取向控制膜，具有容易磁化的轴的垂直磁记录膜主要取向为 垂直于基底和保护膜，其中取向控制膜具有形成C 11 B 17结构的材料组合物。 该磁记录介质是通过以下方法制造的，该方法包括以下步骤：至少在非磁性基板上形成软磁性底膜的步骤，形成控制膜直接定向的取向控制膜的步骤 形成具有易于磁化的轴取向为主要垂直于基板的垂直磁记录膜的步骤和形成保护膜的步骤。 磁记录和再现装置包括磁记录介质和在磁记录介质上记录和再现信息的磁头，其中磁头是磁单极头。
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5.发明授权公开(公告)号：US07056606B2
公开(公告)日：2006-06-06
申请号：US10781906
申请日：2004-02-20
IPC分类号： G11B5/65
CPC分类号： G11B5/855 , G11B5/656 , G11B5/667 , G11B5/7325
摘要： A magnetic recording medium comprising: on a non-magnetic substrate, at least a soft magnetic undercoat film comprising a soft magnetic material; an orientation control film for controlling an orientation of a film directly above; a perpendicular magnetic film in which an axis of easy magnetization is oriented mainly perpendicularly with respect to the substrate; and a protection film, wherein the perpendicular magnetic film has a structure in which a large number of magnetic grains are separated by a grain boundary layer, and an average separating distance between the magnetic grains along a straight line which connects centers of gravity of mutually neighboring magnetic grains is 1 nm or greater.
摘要翻译： 一种磁记录介质，包括：在非磁性基底上，至少包含软磁性材料的软磁性底涂层; 用于直接控制膜的取向的取向控制膜; 垂直磁性膜，其中容易磁化的轴主要相对于衬底垂直取向; 和保护膜，其中垂直磁性膜具有其中大量的磁性颗粒被晶界层分离的结构，以及沿着相互相邻的重心的直线的磁性颗粒之间的平均分离距离 磁性粒子为1nm以上。
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6.发明授权公开(公告)号：US07033684B2
公开(公告)日：2006-04-25
申请号：US10617868
申请日：2003-07-14
CPC分类号： G11B5/66
摘要： A magnetic recording medium comprising at least a soft magnetic layer, an orientation control film that controls the orientation of a film provided directly thereabove, an intermediate film, a perpendicular magnetic recording film of which the axis of easy magnetization is generally oriented perpendicular to a non-magnetic substrate, and a protective film, that are provided on said substrate, wherein the intermediate film has saturation magnetization Ms of at least 20 (emu/cc) and equal to or less than 200 (emu/cc), a method of manufacture thereof, and a magnetic read/write apparatus.
摘要翻译： 至少包括软磁性层的磁记录介质，控制其上方直接设置的膜的取向的取向控制膜，中间膜，垂直磁记录膜，易磁化轴通常垂直于非磁性层 磁性基板和保护膜，其中所述中间膜具有至少20（emu / cc）且等于或小于200（emu / cc）的饱和磁化强度Ms，制造方法 和磁读/写装置。
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7.发明授权公开(公告)号：US09224414B2
公开(公告)日：2015-12-29
申请号：US12438091
申请日：2007-08-22
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。
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8.发明授权公开(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
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。
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9.发明申请MANUFACTURING METHOD FOR MAGNETIC RECORDING MEDIUM, MAGNETIC RECORDING/REPRODUCING DEVICE 有权磁记录介质的制造方法，磁记录/再现装置公开(公告)号：US20120113549A1
公开(公告)日：2012-05-10
申请号：US13382309
申请日：2010-07-01
申请人： Shinichi Ishibashi , Manabu Ueda , Akira Sakawaki
发明人： Shinichi Ishibashi , Manabu Ueda , Akira Sakawaki
CPC分类号： G11B5/855
摘要： Disclosed is a method of manufacturing a magnetic recording medium having a clear magnetic recording pattern through a simple process. The method includes: forming a magnetic layer on the non-magnetic substrate; forming a mask layer which covers a surface of the magnetic layer; forming a resist layer on the mask layer; patterning the resist layer using a stamp; patterning the mask layer using the resist layer, forming a recess by partially removing a portion of the magnetic layer not covered by the mask layer; forming a non-magnetic layer which covers a surface where a recess is formed; flattening a surface of the non-magnetic layer until the mask layer is exposed; removing an exposed mask layer; removing a protruding portion of the non-magnetic layer; and forming a protective layer which covers a surface where the protruding portion was removed.
摘要翻译： 公开了一种通过简单的工艺制造具有清晰磁记录图案的磁记录介质的方法。 该方法包括：在非磁性基板上形成磁性层; 形成覆盖所述磁性层的表面的掩模层; 在掩模层上形成抗蚀剂层; 使用印模图案化抗蚀剂层; 使用抗蚀剂层图案化掩模层，通过部分去除未被掩模层覆盖的一部分磁性层形成凹部; 形成覆盖形成凹部的表面的非磁性层; 使非磁性层的表面变平，直到掩模层露出为止; 去除暴露的掩模层; 去除非磁性层的突出部分; 并且形成覆盖突出部被去除的表面的保护层。
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10.发明申请公开(公告)号：US20120099222A1
公开(公告)日：2012-04-26
申请号：US13276976
申请日：2011-10-19
申请人： Akira YAMANE , Akira SAKAWAKI , Masato FUKUSHIMA
发明人： Akira YAMANE , Akira SAKAWAKI , Masato FUKUSHIMA
CPC分类号： G11B5/855
摘要： A method of manufacturing a magnetic recording medium having a magnetically separated magnetic recording pattern is provided, in which the surface of a magnetic layer is not oxidized or halogenated, the surface is not contaminated with dust, and the manufacturing process is not complex. The method of manufacturing a magnetic recording medium having a magnetically separated magnetic recording pattern includes forming a magnetic layer on a nonmagnetic substrate, forming a mask layer made of carbon to form the magnetic recording pattern on the magnetic layer, forming cobalt carbide as a nonmagnetic material in the magnetic layer by irradiating a region of the magnetic layer not covered by the mask layer with ion beams including carbon hydride ions, and removing the mask layer in this order.
摘要翻译： 提供一种制造具有磁分离的磁记录图案的磁记录介质的方法，其中磁性层的表面不被氧化或卤化，表面不被灰尘污染，并且制造过程不复杂。 制造具有磁分离磁记录图案的磁记录介质的方法包括在非磁性基板上形成磁性层，形成由碳制成的掩模层，以在磁性层上形成磁记录图案，形成作为非磁性材料的碳化钴 在磁性层中，通过用包含碳氢化合物离子的离子束照射未被掩模层覆盖的磁性层的区域，并且依次去除掩模层。
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