专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

41. 发明授权

US06764721B2 Manufacturing method for a perpendicular magnetic recording medium 有权
标题翻译：垂直磁记录介质的制造方法
公开(公告)号：US06764721B2
公开(公告)日：2004-07-20
申请号：US10690406
申请日：2003-10-20
申请人： Hiroyuki Uwazumi , Yasushi Sakai , Toyoji Ataka
发明人： Hiroyuki Uwazumi , Yasushi Sakai , Toyoji Ataka
IPC分类号： H01F100
CPC分类号： G11B5/66 , Y10S428/90 , Y10T428/12465 , Y10T428/12861
摘要： A perpendicular magnetic recording medium is formed of a soft magnetic layer, an anti-ferromagnetic layer, a magnetic recording layer, a protective layer, and a liquid lubricant layer deposited in that order on a non-magnetic substrate. The anti-ferromagnetic layer is a Mn alloy containing at least Co at 10 atomic % or greater and 50 atomic % or less or a Mn alloy containing at least Ir at 10 atomic % or greater and 30 atomic % or less. A radial magnetic field is applied during formation of the anti-ferromagnetic layer and the soft magnetic layer. Exchange coupling with the anti-ferromagnetic layer controls magnetic domain walls of the soft magnetic layer. The need for heat treatment after film formation is eliminated.
摘要翻译：垂直磁记录介质由在非磁性基板上依次沉积的软磁性层，抗铁磁层，磁记录层，保护层和液体润滑剂层形成。反铁磁层是至少含有10原子％以上且50原子％以下的Co的Mn合金或至少含有10原子％以上且30原子％以下的Ir的Mn合金。在形成反铁磁层和软磁层期间施加径向磁场。与反铁磁层的交换耦合控制软磁层的磁畴壁。消除了成膜后对热处理的需要。

42. 发明授权

US5496632A Magnetic recording medium and manufacturing method thereof 失效
标题翻译：磁记录介质及其制造方法
公开(公告)号：US5496632A
公开(公告)日：1996-03-05
申请号：US181422
申请日：1994-01-14
申请人： Kiyoto Yamaguchi , Yukiko Mamiya , Atsushi Ueda , Hiroyuki Uwazumi
发明人： Kiyoto Yamaguchi , Yukiko Mamiya , Atsushi Ueda , Hiroyuki Uwazumi
IPC分类号： G11B5/65 , C09D5/23 , C23C14/18 , G11B5/64 , G11B5/73 , G11B5/738 , G11B5/84 , B32B5/16 , B32B15/00 , G11B5/66
CPC分类号： G11B5/7325 , C23C14/18 , G11B5/8404 , Y10S428/90 , Y10S428/928 , Y10T428/12465 , Y10T428/12493 , Y10T428/12771 , Y10T428/12847 , Y10T428/12854 , Y10T428/26 , Y10T428/265
摘要： A magnetic recording medium capable of making a high-density recording, with improved magnetic characteristics such as coercive force (Hc) and other factors, in which the flatness of the surface of a magnetic recording medium is maintained, and a method for the manufacture thereof are disclosed; by disposing a non-magnetic metal buffer layer 6 between a non-magnetic glass substrate 1 and a non-magnetic metal under layer 2 and keeping a ratio d.sub.1 /d.sub.2 of the half bandwidth of an X-ray diffraction peak of the metal buffer layer 6 and the metal under layer 2 predetermined values, a large increase in coercive force (Hc) can be obtained; in addition, by controlling the film thickness .delta. of the metal buffer layer 6 and the base substance temperature (T) when the metal buffer layer 6 is formed, magnetic characteristics such as squareness (S), coercive force squareness (S*), coercive force difference (.sub..DELTA. HC) and coercive force squareness difference (.sub..DELTA. S*) can be improved.
摘要翻译：一种能够进行高密度记录的磁记录介质，具有改善的磁特性如矫顽力（Hc）等因素，其中维持磁记录介质的表面的平坦度及其制造方法被披露; 通过在非磁性玻璃基板1和非磁性金属层2之间设置非磁性金属缓冲层6，并且保持金属缓冲层的X射线衍射峰的半值带宽的比率d1 / d2 6和金属底层2的预定值，可以获得矫顽力（Hc）的大幅度增加; 此外，通过在形成金属缓冲层6时控制金属缓冲层6的膜厚度delta和基体物质温度（T），可以使用诸如矩形度（S），矫顽力矩形度（S *），矫顽力力差（DELTA HC）和矫顽力矩差（DELTA S *）可以提高。

43. 发明授权

US08105707B2 Perpendicular magnetic recording medium 有权
标题翻译：垂直磁记录介质
公开(公告)号：US08105707B2
公开(公告)日：2012-01-31
申请号：US12595618
申请日：2008-04-11
申请人： Hiroyuki Uwazumi , Yasushi Sakai , Shunji Takenoiri
发明人： Hiroyuki Uwazumi , Yasushi Sakai , Shunji Takenoiri
IPC分类号： G11B5/66
CPC分类号： G11B5/7325 , G11B5/65
摘要： A perpendicular magnetic recording medium, which includes a nonmagnetic substrate, and a soft magnetic layer, a first orientation control layer, a nonmagnetic intermediate layer, and a perpendicular magnetic recording layer formed sequentially on the nonmagnetic substrate. The perpendicular magnetic recording medium further includes a second orientation control layer provided between the first orientation control layer and the nonmagnetic intermediate layer. The nonmagnetic intermediate layer has hexagonal close-packed (hcp) structure. The first orientation control layer has a face-centered cubic (fcc) structure. The second orientation control layer includes Co and Cr, and has the hcp structure.
摘要翻译：包括非磁性基板的垂直磁记录介质和顺序地形成在非磁性基板上的软磁性层，第一取向控制层，非磁性中间层和垂直磁记录层。垂直磁记录介质还包括设置在第一取向控制层和非磁性中间层之间的第二取向控制层。非磁性中间层具有六方密堆积（hcp）结构。第一取向控制层具有面心立方（fcc）结构。第二取向控制层包括Co和Cr，具有hcp结构。

44. 发明授权

US08039045B2 Method of manufacturing a disk substrate for a magnetic recording medium 有权
标题翻译：制造用于磁记录介质的盘基片的方法
公开(公告)号：US08039045B2
公开(公告)日：2011-10-18
申请号：US11191170
申请日：2005-07-27
申请人： Youichi Tei , Akira Iso , Kazuhito Higuchi , Hajime Kurihara , Hiroyuki Uwazumi
发明人： Youichi Tei , Akira Iso , Kazuhito Higuchi , Hajime Kurihara , Hiroyuki Uwazumi
IPC分类号： B05D5/12 , B05D3/10 , B05D3/02 , C23C18/18 , C23C18/31 , C23C18/32 , C23C18/34 , C23C18/50
CPC分类号： C03C15/00 , C03C17/38 , C03C23/0075 , C23C18/1694 , C23C18/1893 , G11B5/8404
摘要： An object of the present invention is to provide a plating method on a glass base plate. The method allows forming a plating film on a base plate composed of a glass material with excellent adhesivity and homogeneity by means of an electroless plating method even to a thickness of 1 μm or more. Before forming a plating film by a step of electroless plating S6, a surface treatment process is conducted on a surface of the base plate composed of a glass material. The surface treatment process comprises at least a step of glass activation treatment S2 to increase quantity of silanol groups on the surface of the base plate at least by a factor of two using an aqueous solution of diluted acid, a step of silane coupling agent treatment S3, a step of palladium catalyst treatment S4, and a step of palladium bonding treatment S5.
摘要翻译：本发明的目的是提供一种在玻璃基板上的电镀方法。该方法允许通过化学镀方法在具有优异的粘合性和均匀性的玻璃材料的基板上形成镀膜，甚至至1μm以上的厚度。在通过化学镀S6的步骤形成镀膜之前，在由玻璃材料构成的基板的表面上进行表面处理。表面处理方法至少包括玻璃活化处理S2的步骤，以使用稀酸水溶液将基板表面上的硅烷醇基增加至少两倍，硅烷偶联剂处理步骤S3 ，钯催化剂处理步骤S4和钯结合处理步骤S5。

45. 发明申请

US20080044688A1 LONGITUDINAL MAGNETIC RECORDING MEDIUM AND METHOD OF MANUFACTURING THE SAME 审中-公开
标题翻译：纵向磁记录介质及其制造方法
公开(公告)号：US20080044688A1
公开(公告)日：2008-02-21
申请号：US11683353
申请日：2007-03-07
申请人： Tuqiang Li , Manabu Shimosato , Toyoji Ataka , Hiromi Ono , Kenichiro Soma , Hiroyuki Uwazumi , Souta Matsuo
发明人： Tuqiang Li , Manabu Shimosato , Toyoji Ataka , Hiromi Ono , Kenichiro Soma , Hiroyuki Uwazumi , Souta Matsuo
IPC分类号： G11B5/66 , B05D5/12
CPC分类号： H01F41/32 , G11B5/656 , G11B5/7325 , G11B5/7379 , G11B5/8404 , H01F10/16
摘要： A high-recording-density magnetic recording medium and a method of its manufacture can achieve a high OR with only a small reduction in Hcr. The magnetic recording medium has a nonmagnetic substrate and a first seed layer, a second seed layer, a first underlayer, a second underlayer, and a magnetic recording layer formed on the substrate in this order. The first seed layer can be a single layer or a plurality of layers made of at least one material selected from the group consisting of Ni—Ti alloys, Cr—Al alloys, Cr—Ta alloys, and Cr—Ti alloys. The second seed layer can be a single layer or a plurality of layers made of at least one material selected from the group consisting of Ni—W alloys, Ni—Ru—W alloys, and Co—W alloys. The first underlayer can be a single layer or a plurality of layers made of a Cr—Ru alloy. The second underlayer can be a single layer or a plurality of layers made of a Cr alloy comprising Cr and at least one element selected from the group consisting of Mo, B, Ti, and W. The second seed layer is formed by sputtering while applying a substrate bias voltage to the substrate. The surface of the second seed layer can be subject to a plasma processing or exposed to an oxygen-containing atmosphere or both.
摘要翻译：高记录密度磁记录介质及其制造方法可以实现高OR，只有较小的Hcr降低。该磁记录介质具有非磁性基板和第一种子层，第二种子层，第一底层，第二底层和磁性记录层，其依次形成在基板上。第一种子层可以是由选自Ni-Ti合金，Cr-Al合金，Cr-Ta合金和Cr-Ti合金中的至少一种材料制成的单层或多层。第二种子层可以是由选自Ni-W合金，Ni-Ru-W合金和Co-W合金中的至少一种材料制成的单层或多层。第一底层可以是由Cr-Ru合金制成的单层或多层。第二底层可以是包含Cr和选自Mo，B，Ti和W中的至少一种元素的Cr合金制成的单层或多层。通过溅射形成第二种子层衬底偏压到衬底。第二种子层的表面可以进行等离子体处理或暴露于含氧气氛或两者。

46. 发明授权

US07311983B2 Perpendicular magnetic recording medium and a method for manufacturing the same 有权
标题翻译：垂直磁记录介质及其制造方法
公开(公告)号：US07311983B2
公开(公告)日：2007-12-25
申请号：US10867568
申请日：2004-06-14
申请人： Sadayuki Watanabe , Yasushi Sakai , Hiroyuki Uwazumi
发明人： Sadayuki Watanabe , Yasushi Sakai , Hiroyuki Uwazumi
IPC分类号： G11B5/66
CPC分类号： G11B5/732 , G11B5/65 , G11B5/656 , G11B5/66 , G11B5/667 , G11B5/7325 , G11B5/84 , G11B5/851
摘要： A perpendicular magnetic recording medium has a magnetic recording layer and laminated magnetic layers composed of different materials. In a first magnetic layer of the magnetic recording layer, ferromagnetic grains are surrounded by a nonmagnetic grain boundary region composed principally of oxide and/or nitride. In a second magnetic layer of the magnetic recording layer, ferromagnetic grains are surrounded by a nonmagnetic grain boundary region composed principally of chromium. The recording medium has an intermediate layer composed of a material having hcp or fcc structure. Advantageously, a heating process is conducted after forming the first magnetic layer and before forming the second magnetic layer. The medium achieves improvement in electromagnetic conversion characteristics and simultaneously improvement in corrosion resistance to provide a perpendicular magnetic recording medium with high recording density and simultaneously high reliability.
摘要翻译：垂直磁记录介质具有由不同材料组成的磁记录层和层叠磁性层。在磁记录层的第一磁性层中，铁磁颗粒被主要由氧化物和/或氮化物组成的非磁性晶界区包围。在磁记录层的第二磁性层中，铁磁颗粒被主要由铬组成的非磁性晶界区包围。记录介质具有由具有hcp或fcc结构的材料构成的中间层。有利地，在形成第一磁性层之后并在形成第二磁性层之前进行加热过程。该介质实现了电磁转换特性的提高，同时提高了耐腐蚀性，提供了具有高记录密度和同时高可靠性的垂直磁记录介质。

47. 发明申请

US20060024431A1 Method of manufacturing a disk substrate for a magnetic recording medium 有权
标题翻译：制造用于磁记录介质的盘基片的方法
公开(公告)号：US20060024431A1
公开(公告)日：2006-02-02
申请号：US11191170
申请日：2005-07-27
申请人： Youichi Tei , Akira Iso , Kazuhito Higuchi , Hajime Kurihara , Hiroyuki Uwazumi
发明人： Youichi Tei , Akira Iso , Kazuhito Higuchi , Hajime Kurihara , Hiroyuki Uwazumi
IPC分类号： B05D5/12 , B05D3/00
CPC分类号： C03C15/00 , C03C17/38 , C03C23/0075 , C23C18/1694 , C23C18/1893 , G11B5/8404
摘要： An object of the present invention is to provide a plating method on a glass base plate. The method allows forming a plating film on a base plate composed of a glass material with excellent adhesivity and homogeneity by means of an electroless plating method even to a thickness of 1 μm or more. Before forming a plating film by a step of electroless plating S6, a surface treatment process is conducted on a surface of the base plate composed of a glass material. The surface treatment process comprises at least a step of glass activation treatment S2 to increase quantity of silanol groups on the surface of the base plate at least by a factor of two using an aqueous solution of diluted acid, a step of silane coupling agent treatment S3, a step of palladium catalyst treatment S4, and a step of palladium bonding treatment S5.
摘要翻译：本发明的目的是提供一种在玻璃基板上的电镀方法。该方法允许通过化学镀方法在具有优异的粘合性和均匀性的玻璃材料的基板上形成镀膜，甚至厚度为1um或更大。在通过无电解电镀步骤S 6形成电镀膜之前，在由玻璃材料构成的基板的表面上进行表面处理工艺。表面处理方法至少包括玻璃活化处理S 2的步骤，以使用稀酸水溶液至少增加2倍的基板表面的硅烷醇基团量，硅烷偶联剂处理步骤 S 3，钯催化剂处理工序S4，钯键合处理工序S 5。

48. 发明申请

US20050238929A1 Disk substrate for a perpendicular magnetic recording medium and a perpendicular magnetic recording medium using the substrate 有权
标题翻译：用于垂直磁记录介质的磁盘基板和使用该基板的垂直磁记录介质
公开(公告)号：US20050238929A1
公开(公告)日：2005-10-27
申请号：US11104274
申请日：2005-04-12
申请人： Hiroyuki Uwazumi , Youichi Tei , Kengo Kainuma , Kazuhito Higuchi , Akira Iso , Hajime Kurihara
发明人： Hiroyuki Uwazumi , Youichi Tei , Kengo Kainuma , Kazuhito Higuchi , Akira Iso , Hajime Kurihara
IPC分类号： G11B5/667 , C23C18/50 , G11B5/64 , G11B5/65 , G11B5/66 , G11B5/72 , G11B5/73 , G11B5/738
CPC分类号： G11B5/667 , G11B5/7315
摘要： A disk substrate for a perpendicular magnetic recording medium is, disclosed. The substrate exhibits sufficient productivity, serves the function of a soft magnetic backing layer of the perpendicular magnetic recording medium, and scarcely generates noise. A perpendicular magnetic recording medium using such a substrate also is disclosed. The disk substrate comprises at least a soft magnetic underlayer formed on a nonmagnetic base plate by means of an electroless plating method. The thermal expansion coefficient of the soft magnetic underlayer is larger than a thermal expansion coefficient of the nonmagnetic disk-shaped base plate. A saturation magnetostriction constant μs satisfies a relation λs≧−1×10−5.
摘要翻译：公开了一种用于垂直磁记录介质的盘基片。基板表现出足够的生产率，起到垂直磁记录介质的软磁背衬层的功能，并且几乎不产生噪声。还公开了使用这种基板的垂直磁记录介质。盘状基板通过无电镀法至少包含在非磁性基板上形成的软磁性底层。软磁性底层的热膨胀系数大于非磁性盘状基板的热膨胀系数。饱和磁致伸缩常数mus满足关系lambdas> = - 1×10 -5。

49. 发明授权

US06913837B2 Perpendicular magnetic recording medium and fabrication method thereof 失效
标题翻译：垂直磁记录介质及其制造方法
公开(公告)号：US06913837B2
公开(公告)日：2005-07-05
申请号：US10189784
申请日：2002-07-08
申请人： Yasushi Sakai , Hiroyuki Uwazumi , Kazuo Enomoto , Sadayuki Watanabe
发明人： Yasushi Sakai , Hiroyuki Uwazumi , Kazuo Enomoto , Sadayuki Watanabe
IPC分类号： G11B5/65 , G11B5/66 , G11B5/667 , G11B5/738 , G11B5/851
CPC分类号： G11B5/66 , G11B5/851 , Y10S428/90 , Y10T428/12465 , Y10T428/12778 , Y10T428/12826 , Y10T428/12847 , Y10T428/12854 , Y10T428/12861 , Y10T428/12931 , Y10T428/24975 , Y10T428/265
摘要： A perpendicular magnetic recording medium and method thereof, includes a nonmagnetic substrate; a soft magnetic under layer; an intermediate layer; a bilayer magnetic recording layer; a protective layer; and a liquid lubricant layer. According to a following order, the soft magnetic under layer, the intermediate layer, the bilayer magnetic recording layer, the protective layer, and the liquid lubricant layer are sequentially stacked on the nonmagnetic substrate. The bilayer magnetic recording layer includes a first magnetic layer including a CoCr alloy crystalline film, and a second magnetic layer including a rare earth-transition metal alloy noncrystalline film.
摘要翻译：一种垂直磁记录介质及其方法，包括非磁性基板; 软磁下层; 中间层双层磁记录层; 保护层; 和液体润滑剂层。根据以下顺序，将软磁性层，中间层，双层磁记录层，保护层和液体润滑剂层依次层叠在非磁性基板上。双层磁记录层包括具有CoCr合金结晶膜的第一磁性层和包括稀土 - 过渡金属合金非晶膜的第二磁性层。

50. 发明授权

US06667117B2 Perpendicular magnetic recording medium and a manufacturing method for the same 有权
标题翻译：垂直磁记录介质及其制造方法
公开(公告)号：US06667117B2
公开(公告)日：2003-12-23
申请号：US09802176
申请日：2001-03-08
申请人： Hiroyuki Uwazumi , Yasushi Sakai , Toyoji Ataka
发明人： Hiroyuki Uwazumi , Yasushi Sakai , Toyoji Ataka
IPC分类号： G11B5667
CPC分类号： G11B5/66 , Y10S428/90 , Y10T428/12465 , Y10T428/12861
摘要： A perpendicular magnetic recording medium is formed of a soft magnetic layer, an anti-ferromagnetic layer, a magnetic recording layer, a protective layer, and a liquid lubricant layer deposited in that order on a non-magnetic substrate. The anti-ferromagnetic layer is a Mn alloy containing at least Co at 10 atomic % or greater and 50 atomic % or less or a Mn alloy containing at least Ir at 10 atomic % or greater and 30 atomic % or less. A radial magnetic field is applied during formation of the anti-ferromagnetic layer and the soft magnetic layer. Exchange coupling with the anti-ferromagnetic layer controls magnetic domain walls of the soft magnetic layer. The need for heat treatment after film formation is eliminated.
摘要翻译：垂直磁记录介质由在非磁性基板上依次沉积的软磁性层，抗铁磁层，磁记录层，保护层和液体润滑剂层形成。反铁磁层是至少含有10原子％以上且50原子％以下的Co的Mn合金或至少含有10原子％以上且30原子％以下的Ir的Mn合金。在形成反铁磁层和软磁层期间施加径向磁场。与反铁磁层的交换耦合控制软磁层的磁畴壁。消除了成膜后对热处理的需要。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式