公开(公告)号：US06291052B1

公开(公告)日：2001-09-18

申请号：US09106933

申请日：1998-06-29

申请人： Masatoshi Takahashi ,  Hitoshi Noguchi ,  Junichi Nakamikawa ,  Hiroaki Doushita

发明人： Masatoshi Takahashi ,  Hitoshi Noguchi ,  Junichi Nakamikawa ,  Hiroaki Doushita

IPC分类号： G11B573

CPC分类号： G11B5/70 ,  G11B5/70605 ,  G11B5/70678 ,  G11B5/708 ,  Y10S428/90 ,  Y10T428/24355 ,  Y10T428/256 ,  Y10T428/265

摘要： A magnetic recording medium which comprises a support having thereon a substantially nonmagnetic lower layer and a magnetic layer comprising a ferromagnetic metal powder or a ferromagnetic hexagonal ferrite powder dispersed in a binder provided on the lower layer, which is a magnetic recording medium for recording signals of from 0.17 to 2 G bit/inch2 of areal recording density, wherein the coercive force of the magnetic layer is 1,800 Oe or more, and the thickness unevenness of the support is 5% or less of the thickness of the support.

摘要翻译： 一种磁记录介质，包括其上具有基本上非磁性的下层的支撑体和包含分散在下层中的粘合剂中的铁磁性金属粉末或铁磁性六角铁氧体粉末的磁性层，所述粘合剂是用于记录信号的信号的磁记录介质 面积记录密度为0.17至2G比特/英寸2，其中磁性层的矫顽力为1800Oe以上，并且载体的厚度不均匀度为载体厚度的5％以下。

公开(公告)号：US06444290B1

公开(公告)日：2002-09-03

申请号：US09329150

申请日：1999-06-09

申请人： Masatoshi Takahashi ,  Hitoshi Noguchi ,  Junichi Nakamikawa

发明人： Masatoshi Takahashi ,  Hitoshi Noguchi ,  Junichi Nakamikawa

IPC分类号： G11B5733

CPC分类号： G11B5/7085 ,  G11B5/70678 ,  Y10T428/24355 ,  Y10T428/24372 ,  Y10T428/25 ,  Y10T428/26 ,  Y10T428/2982

摘要： A magnetic recording medium is described, which comprises a support having thereon a substantially nonmagnetic lower layer and a magnetic layer comprising a ferromagnetic metal powder or a ferromagnetic hexagonal ferrite powder dispersed in a binder provided on the lower layer, which is a magnetic recording medium for recording signals of from 0.17 to 2 G bit/inch2 of areal recording density, wherein the dry thickness of the magnetic layer is from 0.05 to 0.30 &mgr;m , &phgr;m is from 10.0×10−3 to 1.0×10−3 emu/cm2, the coercive force of the magnetic layer is 1,800 Oe or more, and a filler having an average particle size of from 0.05 to 0.3 &mgr;m is present on the surface layer of the support in an amount of from 5,000,000 to 30,000,000/mm2.

摘要翻译： 描述了一种磁记录介质，其包括其上具有基本上非磁性的下层的支撑体和包含分散在下层中的粘合剂中的铁磁性金属粉末或铁磁性六角铁氧体粉末的磁性层，所述粘合剂是用于 记录信号为0.17至2G比特/英寸2的面积记录密度，其中磁性层的干厚度为0.05至0.30μm，phim为10.0×10 -3至1.0×10 -3 emu / cm 2，矫顽力 的磁性层为1800Oe以上，平均粒径为0.05〜0.3μm的填料以5,000,000〜30,000,000 / mm2的量存在于载体的表层上。

公开(公告)号：US06254964B1

公开(公告)日：2001-07-03

申请号：US09267929

申请日：1999-03-08

申请人： Shinji Saito ,  Hitoshi Noguchi ,  Nobuo Yamazaki ,  Junichi Nakamikawa

发明人： Shinji Saito ,  Hitoshi Noguchi ,  Nobuo Yamazaki ,  Junichi Nakamikawa

IPC分类号： G11B0570

CPC分类号： G11B5/71 ,  G11B5/70 ,  G11B5/714 ,  Y10T428/25 ,  Y10T428/256 ,  Y10T428/257 ,  Y10T428/265

摘要： A magnetic recording medium is disclosed, which comprises a support having thereon a substantially nonmagnetic lower layer and a magnetic layer comprising a ferromagnetic metal powder or a ferromagnetic hexagonal ferrite powder dispersed in a binder formed on the lower layer, which is a magnetic recording medium for recording signals having areal recording density of from 0.17 to 2 G bit/inch2, wherein the coercive force of the magnetic layer is 1,800 Oe or more, the average long axis length of the ferromagnetic metal powder is 0.15 &mgr;m or less, and the average particle size of the ferromagnetic hexagonal ferrite powder is 0.10 &mgr;m or less; or wherein the dry thickness of the magnetic layer is from 0.05 to 0.30 &mgr;m, &phgr;m is from 10.0×10−3 to 1.0×10−3 emu/cm2, and the coercive force of the magnetic layer is 1,800 Oe or more. The object of the present invention is to provide a magnetic recording medium which is markedly improved in electromagnetic characteristics, particularly, high density recording characteristics, and is excellent in durability: and to provide a high capacity magnetic recording medium, in particular, a disc-like magnetic recording medium, having a high recording capacity of from 0.17 to 2 Gbit/inch2.

摘要翻译： 公开了一种磁记录介质，其包括其上具有基本上非磁性的下层的支撑体和包含分散在形成在下层上的粘合剂中的铁磁性金属粉末或铁磁性六角铁氧体粉末的磁性层，所述粘合剂是用于 具有0.17〜2G比特/英寸2的面密度记录密度的记录信号，其中磁性层的矫顽力为1800Oe以上，强磁性金属粉末的平均长轴长度为0.15μm以下，平均粒子 铁磁六角铁氧体粉末的尺寸为0.10μm以下; 或其中磁性层的干厚度为0.05至0.30μm，phim为10.0×10 -3至1.0×10 -3 emu / cm 2，并且磁性层的矫顽力为1800Oe以上。 本发明提供一种在电磁特性，特别是高密度记录特性方面显着提高的磁记录介质，并且耐久性优异：并提供高容量磁记录介质，特别是提供一种盘状磁记录介质 具有0.17至2Gbit / inch2的高记录容量。

公开(公告)号：US06458432B1

公开(公告)日：2002-10-01

申请号：US09995274

申请日：2001-11-26

申请人： Hitoshi Noguchi ,  Junichi Nakamikawa ,  Shinji Saito

发明人： Hitoshi Noguchi ,  Junichi Nakamikawa ,  Shinji Saito

IPC分类号： H01F100

CPC分类号： G11B5/845 ,  G11B5/70678 ,  Y10S428/90

摘要： A process for producing a magnetic disk having a randomly oriented magnetic powder, comprises: applying a magnetic coating solution containing at least a magnetic powder to a web that is being continuously conveyed, so as to prepare a magnetic layer; applying a first external magnetic field to the magnetic layer while the magnetic layer is wet; and applying a second external magnetic field to the magnetic layer while the magnetic layer is wet, wherein: the first external magnetic field is applied with a set of a first pair of same-pole-opposed magnets with the web interposed therebetween and a second pair of same-pole-opposed magnets with the web interposed therebetween; the first and second pairs are provided on the same plane of the web and on two equal sides of an isosceles triangle so that a perpendicular line dropped from a base of the isosceles triangle forms a line perpendicular to a conveying direction of the web; and the second external magnetic field is an alternating magnetic field, and is applied with a pair of magnets with the web interposed therebetween; the pair of magnets being provided on the same plane of the web, and in a direction perpendicular to the conveying direction of the web.

公开(公告)号：US09353458B2

公开(公告)日：2016-05-31

申请号：US12225570

申请日：2007-02-05

申请人： Atsuhito Sawabe ,  Hitoshi Noguchi ,  Shintaro Maeda

发明人： Atsuhito Sawabe ,  Hitoshi Noguchi ,  Shintaro Maeda

IPC分类号： C30B23/02 ,  C30B25/10 ,  C30B25/18 ,  C30B29/02 ,  C30B29/04 ,  H01L21/02 ,  C23C16/27 ,  H01J37/32 ,  H01J37/34

CPC分类号： C30B23/02 ,  C23C16/272 ,  C30B25/105 ,  C30B25/18 ,  C30B29/02 ,  C30B29/04 ,  H01J37/32009 ,  H01J37/34 ,  H01J37/3447 ,  H01L21/0242 ,  H01L21/02433 ,  H01L21/02491 ,  H01L21/02516 ,  H01L21/02527 ,  H01L21/0262

摘要： The present invention provides a base substrate for epitaxial diamond film capable of epitaxially growing a large area of high quality diamond, having a diameter of 1 inch (2.5 cm) or more, on an iridium base by using the CVD method, a method for producing the base substrate for epitaxial diamond film, an epitaxial diamond film produced with the base substrate for epitaxial diamond film and a method for producing the epitaxial diamond film. An iridium (Ir) film is formed by epitaxial growth on a single crystal magnesium oxide (MgO) substrate or a single crystal sapphire (α-Al2O3) substrate by means of a vacuum deposition method or a sputtering method, and a bias nucleus generation process of forming epitaxial diamond nuclei is applied to the surface of the iridium (Ir) base formed as a film by exposing an ion-containing direct current plasma to the surface of the iridium (Ir) base formed as a film.

摘要翻译： 本发明提供一种用于外延金刚石膜的基底，其能够通过使用CVD法在铱基上外延生长具有1英寸（2.5cm）或更大直径的大面积的高品质金刚石， 用于外延金刚石膜的基底衬底，用外延金刚石膜制成的外延金刚石膜和用于制造外延金刚石膜的方法。 通过真空沉积法或溅射法在单晶氧化镁（MgO）衬底或单晶蓝宝石（α-Al 2 O 3）衬底上外延生长形成铱（Ir）膜，并且偏置核生成工艺 通过将含离子的直流等离子体暴露于形成为膜的铱（Ir）基底的表面，将形成外延金刚石核的形成的铱（Ir）基底的表面施加于膜。

公开(公告)号：US09127375B2

公开(公告)日：2015-09-08

申请号：US12591539

申请日：2009-11-23

申请人： Hitoshi Noguchi

发明人： Hitoshi Noguchi

IPC分类号： C30B29/04 ,  C30B25/18

CPC分类号： C30B25/18 ,  C30B29/04 ,  Y10T117/10

摘要： The present invention is a base material for forming a single crystal diamond comprising, at least, a seed base material of a single crystal and a thin film heteroepitaxially grown on the seed base material, wherein the seed base material is a single crystal diamond and the thin film is Iridium film or Rhodium film. As a result, there is provided a base material for forming a single crystal diamond that enables a single crystal diamond having a high crystallinity to be heteroepitaxially grown thereon and that can be reused repeatedly and a method for producing a single crystal diamond that enables a single crystal diamond having a high crystallinity and a large area to be produced at low cost.

摘要翻译： 本发明是用于形成单晶金刚石的基材，其至少包括单晶晶种基材和在种子基材上异质外延生长的薄膜，其中种子基材为单晶金刚石， 薄膜是铱膜或铑膜。 结果，提供了一种用于形成单晶金刚石的基材，其使得能够使具有高结晶度的单晶金刚石在其上异质外延生长并且可以重复使用，并且可以制造单晶金刚石的方法， 具有高结晶度和大面积的水晶钻石以低成本生产。

公开(公告)号：US09076653B2

公开(公告)日：2015-07-07

申请号：US12662616

申请日：2010-04-26

申请人： Hitoshi Noguchi

发明人： Hitoshi Noguchi

IPC分类号： C30B25/02 ,  H01L21/205 ,  H01L21/02 ,  H01L29/06 ,  C30B25/18 ,  C30B25/20 ,  C30B29/02 ,  C30B29/04 ,  C30B33/06

CPC分类号： H01L21/02527 ,  C30B25/02 ,  C30B25/186 ,  C30B25/20 ,  C30B29/02 ,  C30B29/04 ,  C30B33/06 ,  H01L21/02021 ,  H01L21/02376 ,  H01L21/02491 ,  H01L21/02664 ,  H01L29/0657 ,  Y10T428/219 ,  Y10T428/24488

摘要： The present invention is a substrate for growing a single crystal diamond layer including: at least, a base material made of a single crystal diamond, and an iridium film or a rhodium film heteroepitaxially grown on a side of the base material where the single crystal diamond layer is to be grown; wherein a peripheral end portion of a surface of the base material on the side where the single crystal diamond layer is to be grown is chamfered with a curvature radius (r), the curvature radius satisfying (r)≧50 μm. As a result, there is provided a substrate for growing a single crystal diamond layer and a method for producing a single crystal diamond substrate, the substrate and the method in which a single crystal diamond having uniform and high crystallinity can be reproducibly produced at low cost.

摘要翻译： 本发明是用于生长单晶金刚石层的基板，包括：至少由单晶金刚石制成的基材，以及异质外延生长在基材侧的铱膜或铑膜，其中单晶金刚石 层要生长; 其中，要生长单晶金刚石层一侧的基材的表面的外周端部以曲率半径（r）倒角，曲率半径满足（r）≥50μm。 结果，提供了用于生长单晶金刚石层的基板和用于制造单晶金刚石基板的方法，该基板和其中可以以低成本可再现地制造具有均匀和高结晶度的单晶金刚石的方法 。

公开(公告)号：US20100294196A1

公开(公告)日：2010-11-25

申请号：US12662616

申请日：2010-04-26

申请人： Hitoshi Noguchi

发明人： Hitoshi Noguchi

IPC分类号： C30B25/20 ,  B32B3/02

CPC分类号： H01L21/02527 ,  C30B25/02 ,  C30B25/186 ,  C30B25/20 ,  C30B29/02 ,  C30B29/04 ,  C30B33/06 ,  H01L21/02021 ,  H01L21/02376 ,  H01L21/02491 ,  H01L21/02664 ,  H01L29/0657 ,  Y10T428/219 ,  Y10T428/24488

摘要： The present invention is a substrate for growing a single crystal diamond layer including: at least, a base material made of a single crystal diamond, and an iridium film or a rhodium film heteroepitaxially grown on a side of the base material where the single crystal diamond layer is to be grown; wherein a peripheral end portion of a surface of the base material on the side where the single crystal diamond layer is to be grown is chamfered with a curvature radius (r), the curvature radius satisfying (r)≧50 μm. As a result, there is provided a substrate for growing a single crystal diamond layer and a method for producing a single crystal diamond substrate, the substrate and the method in which a single crystal diamond having uniform and high crystallinity can be reproducibly produced at low cost.

摘要翻译： 本发明是用于生长单晶金刚石层的基板，包括：至少由单晶金刚石制成的基材，以及异质外延生长在基材侧的铱膜或铑膜，其中单晶金刚石 层要生长; 其中，要生长单晶金刚石层一侧的基材的表面的外周端部以曲率半径（r）倒角，曲率半径满足（r）≥50μm。 结果，提供了用于生长单晶金刚石层的基板和用于制造单晶金刚石基板的方法，该基板和其中可以以低成本可再现地制造具有均匀和高结晶度的单晶金刚石的方法 。

公开(公告)号：US20090098414A1

公开(公告)日：2009-04-16

申请号：US12240406

申请日：2008-09-29

申请人： Tadahiro OOISHI ,  Kazufumi Omura ,  Hitoshi Noguchi ,  Hiroaki Takano

发明人： Tadahiro OOISHI ,  Kazufumi Omura ,  Hitoshi Noguchi ,  Hiroaki Takano

IPC分类号： G11B5/706 ,  B05D5/00

CPC分类号： G11B5/7021 ,  G11B5/7013 ,  G11B5/714 ,  G11B5/842

摘要： The present invention relates to a method of manufacturing a magnetic recording medium wherein the magnetic layer coating liquid comprising a ferromagnetic powder having an average particle size of 10 to 40 nm and a moisture content of 0.3 to 3.0 weight percent; a binder (a) comprising 0.2 to 0.7 meq/g of at least one polar group selected from the group consisting of —SO3M, —OSO3M, —PO(OM)2, —OPO(OM)2, and COOM (M denotes a hydrogen atom or the like) and having a weight average molecular weight of 20,000 to 200,000, and/or (b) comprising 0.5 to 5 meq/g of at least one polar group selected from the group consisting of —CONR1R2, —NR1R2, and —NR+R1R2R3 (wherein R1, R2, and R3 each independently denote a hydrogen atom or the like) and having a weight average molecular weight of 20,000 to 200,000; and a compound comprising at least one carboxyl group and/or hydroxyl group per molecule.

摘要翻译： 磁记录介质的制造方法技术领域本发明涉及一种制造磁记录介质的方法，其中所述磁性层涂布液含有平均粒度为10〜40nm，水分含量为0.3〜3.0重量％的铁磁性粉末; 包含0.2至0.7meq / g的至少一种选自-SO 3 M，-OSO 3 M，-PO（OM）2，-OPO（OM）2和COOM的极性基团的粘合剂（a）（M表示 氢原子等），重均分子量为20,000〜200,000，和/或（b）含有0.5〜5meq / g的至少一种极性基团，选自-CONR1R2，-NR1R2和 -NR + R1R2R3（其中R1，R2和R3各自独立地表示氢原子等），重均分子量为20,000〜200,000; 和每分子含有至少一个羧基和/或羟基的化合物。

公开(公告)号：US20090027812A1

公开(公告)日：2009-01-29

申请号：US12180580

申请日：2008-07-28

申请人： Hitoshi Noguchi ,  Yasushi Endo ,  Osamu Shimizu ,  Makoto Yoshida ,  Kazuhiko Maejima ,  Mitsuyoshi Kawai

发明人： Hitoshi Noguchi ,  Yasushi Endo ,  Osamu Shimizu ,  Makoto Yoshida ,  Kazuhiko Maejima ,  Mitsuyoshi Kawai

IPC分类号： G11B5/33

CPC分类号： G11B5/70 ,  G11B5/00826 ,  G11B5/29 ,  G11B5/3106 ,  G11B5/3906 ,  G11B5/70678 ,  G11B5/7085 ,  G11B5/71 ,  G11B5/714

摘要： The magnetic signal reproduction system comprises a magnetic recording medium comprising a magnetic layer comprising a ferromagnetic powder and a binder on a nonmagnetic support and a reproduction head, wherein a number of protrusions equal to or greater than 10 nm in height on the magnetic layer surface, as measured by an atomic force microscope, ranges from 50 to 2500/10,000 μm2, a quantity of lubricant on the magnetic layer surface, denoted as a surface lubricant index, ranges from 0.5 to 5.0, a surface abrasive occupancy of the magnetic layer ranges from 2 to 20 percent, the reproduction head is a magnetoresistive magnetic head comprising a spin-valve layer, the spin-valve layer comprises a magnetization free layer, a magnetization pinned layer and an antiferromagnetic layer, and the antiferromagnetic layer is comprised of alloy comprising iridium and manganese, and the reproduction head comes in sliding contact with the magnetic recording medium during signal reproduction.

摘要翻译： 磁信号再现系统包括磁记录介质，磁记录介质包括在非磁性载体上的铁磁性粉末和粘合剂的磁性层和再现磁头，其中在磁性层表面上高度等于或大于10nm的突起数目， 通过原子力显微镜测量的范围为50至2500 / 10,000mum2，表面润滑指数表示为磁性层表面的润滑剂的数量为0.5至5.0，磁性层的表面磨料占据率为 2〜20％，再现头是包括自旋阀层的磁阻磁头，自旋阀层包括磁化自由层，磁化钉扎层和反铁磁层，反铁磁层由包含铱的合金 和锰，并且再现头在信号再现期间与磁记录介质滑动接触。