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11. 发明授权

US5508117A Magnetic recording medium and production process thereof 失效
标题翻译：磁记录介质及其制备方法
公开(公告)号：US5508117A
公开(公告)日：1996-04-16
申请号：US150267
申请日：1993-11-10
申请人： Toshio Kawamata , Yasushi Endo
发明人： Toshio Kawamata , Yasushi Endo
IPC分类号： G11B5/702 , C09D5/23 , C09D127/04 , C09D127/06 , C09D175/00 , C09D175/06 , G11B5/706 , G11B5/708 , G11B5/716 , G11B5/842 , B22D25/00 , B32B5/16 , G11B5/66
CPC分类号： G11B5/7022 , G11B5/7085 , G11B5/716 , Y10S428/90 , Y10T428/12458 , Y10T428/24942 , Y10T428/2495 , Y10T428/25 , Y10T428/256 , Y10T428/257
摘要： Disclosed is a magnetic recording medium comprising a nonmagnetic support having thereon a magnetic layer comprising a ferromagnetic powder and a binder resin as the main components together with abrasive particles. The ferromagnetic powder is a hexagonal ferrite fine powder having particle sizes of from 0.01 to 0.2 .mu.m and a coercive force of from 600 to 2,000 Oe. The binder resin is composed of a polyurethane resin and/or a vinyl chloride resin each having at least one kind of a polar group, the abrasive particles are composed of a fine particle abrasive having a mean particle size of from 0.1 to 0.39 .mu.m and a coarse particle abrasive having a mean particle size of from 0.4 to 1.0 .mu.m, and the density of the coarse particle abrasive distributed in the vicinity of the surface of the magnetic layer is higher than that of the coarse particle abrasive distributed in the other region of the magnetic layer.
摘要翻译：公开了一种包括非磁性载体的磁记录介质，其上具有包含铁磁粉末和粘合剂树脂作为主要组分的磁性层以及磨料颗粒。铁磁性粉末是粒径为0.01〜0.2μm，矫顽力为600〜2000Oe的六方铁氧体细粉末。粘合剂树脂由具有至少一种极性基团的聚氨酯树脂和/或氯乙烯树脂构成，磨粒由平均粒径为0.1〜0.39μm的细颗粒磨料和平均粒径为0.4〜1.0μm的粗粒磨料，分布在磁性层表面附近的粗粒磨料的密度高于分布在其他区域的粗粒磨料的密度的磁性层。

12. 发明授权

US5389418A Flexible magnetic recording disk and method for preparing the same 失效
标题翻译：柔性磁记录盘及其制备方法
公开(公告)号：US5389418A
公开(公告)日：1995-02-14
申请号：US108455
申请日：1993-08-19
申请人： Masataka Ota , Yasushi Endo , Satoru Hayakawa , Toshio Kawamata
发明人： Masataka Ota , Yasushi Endo , Satoru Hayakawa , Toshio Kawamata
IPC分类号： G11B5/708 , C09D5/23 , G11B5/70 , G11B5/73 , G11B5/738 , G11B5/82 , G11B5/842 , G11B5/00
CPC分类号： G11B5/738 , G11B5/70 , Y10S428/90 , Y10T428/24942 , Y10T428/2495 , Y10T428/25 , Y10T428/265
摘要： There is disclosed a flexible magnetic recording disk which is suitable as a high capacity magnetic disk for data recording and has an excellent durability. The flexible magnetic recording disk comprises a non-magnetic support having thereon a non-magnetic layer comprising a non-magnetic powder and a binder resin, and a magnetic layer comprising a ferromagnetic powder and a binder resin, in this order, wherein the magnetic layer has a thickness of 1 .mu.m or less, which is 1/2 or less of the thickness of the non-magnetic layer; and the magnetic layer further contains the abrasive particles which comprise a first abrasive particles having a Mohs' hardness of 6 or more and an average particle size of 0.8 to 1.4 times as large as the average particle size of the magnetic powder and a second abrasive particles having a Mohs' hardness of 6 or more and an average particle size of 2 to 4 times as large as the average particle size of the ferromagnetic powder.
摘要翻译：公开了一种适合作为用于数据记录的高容量磁盘的柔性磁记录盘，并且具有优异的耐久性。柔性磁记录盘包括非磁性载体，其上具有包含非磁性粉末和粘结剂树脂的非磁性层，以及包含铁磁性粉末和粘合剂树脂的磁性层，其中磁性层的厚度为1μm以下，为非磁性层的厚度的1/2以下。并且所述磁性层还包含所述磨料颗粒，所述磨料颗粒包含莫氏硬度为6或更高的第一磨料颗粒和平均粒径为磁粉的平均粒度的0.8至1.4倍的第二磨料颗粒莫氏硬度为6以上，平均粒径为铁磁性粉末的平均粒径的2〜4倍。

13. 发明授权

US5384175A Magnetic recording disc comprising a non-magnetic underlayer and a magnetic layer comprising ferromagnetic particles and a binder 失效
标题翻译：磁记录盘包括非磁性底层和包含铁磁颗粒和粘合剂的磁性层
公开(公告)号：US5384175A
公开(公告)日：1995-01-24
申请号：US959795
申请日：1992-10-13
申请人： Masaya Kojima , Kazuhiro Niitsuma , Satoru Hayakawa , Toshio Kawamata , Yasushi Endo
发明人： Masaya Kojima , Kazuhiro Niitsuma , Satoru Hayakawa , Toshio Kawamata , Yasushi Endo
IPC分类号： G11B5/706 , G11B5/738 , G11B23/00
CPC分类号： G11B5/70605 , G11B5/738 , Y10S428/90 , Y10T428/25 , Y10T428/265 , Y10T428/30
摘要： A novel magnetic recording disc is provided comprising, a nonmagnetic support having thereon a nonmagnetic layer comprising nonmagnetic particles and a binder resin, and a magnetic layer comprising ferromagnetic particles and a binder resin, in this order. The nonmagnetic particles in the nonmagnetic layer are partially or entirely electrically conductive particles, the thickness of the magnetic layer is in the range of 0.5 .mu.m or less, and the orientation ratio of the ferromagnetic particles in the magnetic layer is 0.85 or more.A novel process for preparing the magnetic recording disc is provided. Further, a novel process for recording and reproduction of a signal having a shortest recordable wavelength of 1.5 .mu.m or less is provided, which utilizes the magnetic recording disc in conjunction with a magnetic head having a gap length (.delta.) of 0.50 .mu.m or less.
摘要翻译：提供了一种新颖的磁记录盘，其包括：非磁性载体，其上具有包含非磁性颗粒和粘合剂树脂的非磁性层，以及包含铁磁颗粒和粘合剂树脂的磁性层。非磁性层中的非磁性颗粒是部分或全部是导电颗粒，磁性层的厚度在0.5μm或更小的范围内，并且磁性层中铁磁性颗粒的取向比为0.85以上。提供了一种制备磁记录盘的新颖方法。另外，提供了一种用于记录和再现具有最小可记录波长为1.5μm或更小的信号的新颖方法，其利用磁记录盘与间隙长度（delta）为0.50μm的磁头或减。

14. 发明授权

US08279554B2 Magnetic recording medium and magnetic signal reproduction method 有权
标题翻译：磁记录介质和磁信号再现方法
公开(公告)号：US08279554B2
公开(公告)日：2012-10-02
申请号：US13364610
申请日：2012-02-02
申请人： Hitoshi Noguchi , Osamu Shimizu , Yasushi Endo
发明人： Hitoshi Noguchi , Osamu Shimizu , Yasushi Endo
IPC分类号： G11B5/78
CPC分类号： G11B5/70 , G11B5/00821 , G11B5/70678 , 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, and the reproduction head is a magnetoresistive magnetic head comprising a spin-valve layer.
摘要翻译：磁信号再现系统包括磁记录介质，其包括在非磁性载体上包含铁磁粉末和粘合剂的磁性层; 以及再现头，其中通过原子力显微镜测量的磁性层表面上的高度等于或大于10nm的突起的数量范围为50至2500 /10,000μm2，磁性层上的润滑剂量以表面润滑剂指数表示的表面的范围为0.5至5.0，磁性层的表面磨料占有率为2至20％，再现头为包括自旋阀层的磁阻磁头。

15. 发明授权

US06839201B2 Small magnetic disk cartridge 失效
标题翻译：小磁盘盒
公开(公告)号：US06839201B2
公开(公告)日：2005-01-04
申请号：US10310182
申请日：2002-12-05
申请人： Yasushi Endo
发明人： Yasushi Endo
IPC分类号： G11B23/00 , G11B23/03 , G11B23/033
CPC分类号： G11B23/0317 , G11B23/0305
摘要： A small magnetic disk cartridge for use in a card disk drive to be loaded in electronic equipment. The magnetic disk cartridge comprises a housing, a disk-mounting hub rotatable within the housing by a spindle provided in the disk drive, and a flexible magnetic disk mounted at one point on the disk-mounting hub.
摘要翻译：用于卡盘驱动器中的小型磁盘盒装载在电子设备中。磁盘盒包括壳体，通过设置在盘驱动器中的心轴在壳体内旋转的盘安装毂，以及安装在盘安装毂上的一点处的柔性磁盘。

16. 发明授权

US5773137A Magnetic recording disk 失效
标题翻译：磁记录盘
公开(公告)号：US5773137A
公开(公告)日：1998-06-30
申请号：US667499
申请日：1996-06-21
申请人： Kazuhiro Niitsuma , Yasushi Endo
发明人： Kazuhiro Niitsuma , Yasushi Endo
IPC分类号： G11B5/702 , G11B5/012 , G11B5/09 , G11B5/738 , G11B5/82 , B32B5/16
CPC分类号： G11B5/09 , G11B5/738 , G11B5/012 , G11B5/82 , Y10T428/24355 , Y10T428/25
摘要： A magnetic recording disk having a flexible non-magnetic support, an intervening non-magnetic layer of 0.5 to 5 .mu.m thick which contains as binder and anon-magnetic inorganic powder, and a magnetic layer of 0.02 to 0.5 .mu.m thick containing a binder, a ferromagnetic powder, carbon black and a lubricant to reduced in its tendency to make a magnetic head of a magnetic recording/reproducing device corrosive without reducing its running endurance, by employing a binder polymer containing no chlorine atom in its molecular structure for both the non-magnetic layer and the magnetic layer and by making the magnetic layer to have an upper surface having a Knoop hardness of 14 to 25.
摘要翻译：一种具有柔性非磁性载体的磁记录盘，0.5至5μm厚的中间非磁性层，其包含作为粘合剂和无机无机粉末的磁性层，以及含有粘合剂的0.02至0.5μm厚的磁性层，铁磁粉末，炭黑和润滑剂，通过在其分子结构中使用不含氯原子的粘合剂聚合物来减少磁性记录/再现装置的磁头腐蚀性而不降低其耐久性，非磁性层和磁性层，并且通过使磁性层具有Knoop硬度为14至25的上表面。

17. 发明授权

US06863948B2 Disk-shaped magnetic recording medium 失效
标题翻译：盘状磁记录介质
公开(公告)号：US06863948B2
公开(公告)日：2005-03-08
申请号：US10303902
申请日：2002-11-26
申请人： Yasushi Endo
发明人： Yasushi Endo
IPC分类号： G11B5/82 , G11B23/00
CPC分类号： G11B23/0021 , G11B5/825 , Y10T428/219
摘要： A disk-shaped magnetic recording medium for use in a small magnetic disk cartridge, comprising a flexible disk-shaped magnetic sheet, and a rigid annular member attached to the outer circumferential edge portion of one side of the magnetic sheet.
摘要翻译：一种用于小型磁盘盒的盘形磁记录介质，包括柔性盘状磁性片，以及安装在磁性片的一侧的外周边缘部分上的刚性环形件。

18. 发明授权

US5935674A Disc type magnetic recording medium 失效
标题翻译：盘式磁记录介质
公开(公告)号：US5935674A
公开(公告)日：1999-08-10
申请号：US886468
申请日：1997-07-01
申请人： Shinji Saito , Hitoshi Noguchi , Yasushi Endo
发明人： Shinji Saito , Hitoshi Noguchi , Yasushi Endo
IPC分类号： G11B5/70 , G11B5/73 , G11B5/82
CPC分类号： G11B5/70 , G11B5/7305 , Y10S428/90 , Y10T428/24355
摘要： The present invention provides a disc magnetic recording medium which provides remarkable improvements in electromagnetic characteristics, particularly high density recording properties, and exhibits excellent magnetic properties with various sizes. A disc type magnetic recording medium is disclosed, comprising a substantially non-magnetic layer and a magnetic layer provided on a non-magnetic support in this order, said magnetic layer comprising a ferromagnetic metal fine powder or ferromagnetic hexagonal ferrite fine powder dispersed in a binder, wherein said non-magnetic support is an aramide or polyethylene naphthalate having a central plane average surface roughness SRa of not more than 10 mm and there is the following relationship between the thickness d (.mu.m) of the non-magnetic support and the outermost diameter D (mm) of the recording area:1.25.ltoreq.D/d.ltoreq.2.50 (when the non-magnetic support is an aramide)1.00.ltoreq.D/d.ltoreq.2.00 (when the non-magnetic support is a polyethylene naphthalate)
摘要翻译：本发明提供一种盘式磁记录介质，其提供了电磁特性，特别是高密度记录性能方面的显着改进，并表现出优异的各种尺寸的磁特性。公开了一种盘式磁记录介质，其包括基本上非磁性层和设置在非磁性载体上的磁性层，所述磁性层包含分散在粘合剂中的铁磁性金属细粉末或铁磁六方铁氧体细粉末其中所述非磁性载体是中心平面平均表面粗糙度SRa不超过10mm的芳族聚酰胺或聚萘二甲酸乙二醇酯，并且非磁性载体的厚度d（μm）与最外层记录区域的直径D（mm）：1.25

19. 发明授权

US4412147A Ultrasonic holography imaging device having a macromolecular piezoelectric element transducer 失效
标题翻译：具有高分子压电元件换能器的超声全息成像装置
公开(公告)号：US4412147A
公开(公告)日：1983-10-25
申请号：US203838
申请日：1980-11-04
申请人： Masato Nagura , Kazushige Kikuchi , Hiroshi Obara , Yasushi Endo
发明人： Masato Nagura , Kazushige Kikuchi , Hiroshi Obara , Yasushi Endo
IPC分类号： A61B8/00 , B06B1/06 , G01S15/89 , G03H3/00 , H04R17/00 , H01L41/00
CPC分类号： B06B1/0688 , H04R17/005 , Y10S310/80
摘要： An ultrasonic image device such as may be used in a holography system or scanning system and having a piezoelectric transducer in which the conversion efficiency and phase are substantially constant over a wide frequency range. A piezoelectric sheet 5 .mu.m to 1000 .mu.m thick is used for a piezoelectric element. The piezoelectric sheet is constructed of a macromolecular material including polymers and copolymers of polar monomers. A high frequency signal input device applies to the electrodes coupled to the piezoelectric sheet high frequency signals of different frequencies in a range around a fundamental resonance of the piezoelectric sheet of .+-.10 to .+-.70% of the fundamental resonance frequency.
摘要翻译：诸如可以用在全息系统或扫描系统中并且具有压电换能器的超声波图像装置，其中转换效率和相位在宽频率范围内基本上是恒定的。压电元件使用5μm〜1000μm厚的压电片。压电片由包括极性单体的聚合物和共聚物的高分子材料构成。高频信号输入装置适用于在压电片的基本共振频率的+/- 10至+/- 70％的压电片的基本谐振周围的范围内耦合到压电片的不同频率的高频信号的电极。

20. 发明申请

US20090027812A1 MAGNETIC SIGNAL REPRODUCTION SYSTEM AND MAGNETIC SIGNAL REPRODUCTION METHOD 审中-公开
标题翻译：磁信号再现系统和磁信号再现方法
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。

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