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61. 发明授权

US5318828A Magnetic recording medium having multiple magnetic layers comprising magnetic particles and polyurethane resins having glass transition temperatures within specified ranges 失效
标题翻译：磁记录介质具有多个包含磁性颗粒的磁性层和具有玻璃化转变温度在特定范围内的聚氨酯树脂
公开(公告)号：US5318828A
公开(公告)日：1994-06-07
申请号：US26164
申请日：1993-03-01
申请人： Hitoshi Noguchi , Shinji Saito , Hiroshi Ogawa
发明人： Hitoshi Noguchi , Shinji Saito , Hiroshi Ogawa
IPC分类号： G11B5/702 , C09D5/23 , C09D127/04 , C09D127/06 , C09D175/06 , G11B5/714 , G11B5/716 , G11B5/00
CPC分类号： G11B5/7021 , G11B5/716 , Y10S428/90 , Y10T428/24942 , Y10T428/24975 , Y10T428/256 , Y10T428/265 , Y10T428/3158 , Y10T428/31591 , Y10T428/31609 , Y10T428/31935
摘要： A magnetic recording medium is disclosed comprising a non-magnetic support having provided thereon a plurality of magnetic layers containing a ferromagnetic powder dispersed in a binder, wherein the lower magnetic layer closest to the support contains as the binder at least one polyurethane resin having a glass transition temperature (Tg) of from -50.degree. C. to -10.degree. C., and the uppermost magnetic layer contains as the binder at least one polyurethane resin having a glass transition temperature of from more than 40.degree. C. to 100 .degree. C.The magnetic recording medium of the present invention exhibits excellent running durability as well as electromagnetic conversion characteristics.
摘要翻译：公开了一种磁记录介质，其包括非磁性载体，其上设置有多个含有分散在粘合剂中的铁磁粉末的磁性层，其中最靠近载体的下磁性层含有至少一种具有玻璃的聚氨酯树脂作为粘合剂转变温度（Tg）为-50℃至-10℃，最上层的磁性层含有玻璃化转变温度高于40℃至100℃的至少一种聚氨酯树脂作为粘合剂本发明的磁记录介质具有优异的运行耐久性以及电磁转换特性。

62. 发明授权

US5240768A Articles containing metal fibers 失效
标题翻译：含金属纤维的物品
公开(公告)号：US5240768A
公开(公告)日：1993-08-31
申请号：US773985
申请日：1991-10-09
申请人： Robin E. Wright , Peter A. Bellus
发明人： Robin E. Wright , Peter A. Bellus
IPC分类号： B22F1/00 , B22F9/30 , G11B5/714 , H01F1/06 , H01F1/08 , H01F1/44 , H01Q17/00
CPC分类号： H01Q17/002 , B22F1/004 , B22F9/30 , G11B5/714 , H01F1/06 , H01F1/08 , H01F1/442 , Y10S428/90 , Y10T428/25 , Y10T428/31544
摘要： A slurry comprises a ferromagnetic fiber having an aspect ratio of 10 to 10,000 and an organic liquid medium that is unreactive with the metal fibers.The metal fibers are provided by preparing a mixture comprising a thermally unstable metal complex compound, comprising at least one ferromagnetic metal, in a liquid medium, applying energy to said mixture in the presence of an externally applied magnetic field to decompose said complex compound, and isolating the deposited metal fibers.Articles are provided by the impregnation of metal fibers of the invention into and onto a porous substrate.
摘要翻译：浆料包含纵横比为10至10,000的铁磁纤维和与金属纤维不反应的有机液体介质。通过在外部施加的磁场的存在下，通过制备包含热不稳定的金属络合物的混合物来提供金属纤维，所述混合物包含至少一种铁磁性金属，在液体介质中，向所述混合物施加能量以分解所述络合物;以及隔离沉积的金属纤维。通过将本发明的金属纤维浸渍到多孔基材上并提供给制品。

63. 发明授权

US5225281A Magnetic recording medium comprising a magnetic coating containing magnetic powder obtained from a process of coating iron oxide powder with silicon, zirconium and aluminum compounds and reducing 失效
标题翻译：磁性记录介质，包含从含有氧化硅，氧化锆和铝和氧化铝的氧化铝粉末的过程中获得的磁性粉末的磁性涂层，并减少
公开(公告)号：US5225281A
公开(公告)日：1993-07-06
申请号：US668496
申请日：1991-03-21
申请人： Kiminori Tamai , Shigeo Kurose , Kiyotaka Okuyama
发明人： Kiminori Tamai , Shigeo Kurose , Kiyotaka Okuyama
IPC分类号： G11B5/706 , G11B5/712 , G11B5/714
CPC分类号： G11B5/714 , G11B5/70615 , G11B5/712 , Y10S428/90 , Y10T428/2991
摘要： The magnetic recording medium of the invention has a magnetic layer formed by mixing an iron base metal magnetic powder with a binder, the metal magnetic powder being prepared by furnishing hydrous iron oxide or iron oxide powder as a starting material, applying Zr, Al, and Si compounds or Zr, Al, and Co compounds to the powder surface, and reducing the treated powder in a reducing atmosphere. Improved surface smoothness, a low coefficient of friction, and improved dynamic durability are achievable.
摘要翻译： PCT No.PCT / JP90 / 00908 Sec。 371日期1991年3月21日 102（e）1991年3月21日PCT PCT 1990年7月13日PCT公布。出版物WO91 / 01548 PCT 日本1991年7月2日。本发明的磁记录介质具有通过将铁基金属磁性粉末与粘合剂混合而形成的磁性层，金属磁性粉末是通过提供含水氧化铁或氧化铁粉末作为原料制备的，将Zr，Al和Si化合物或Zr，Al和Co化合物施加到粉末表面，并在还原气氛中还原处理过的粉末。可以实现改进的表面平滑度，低摩擦系数和改善的动态耐久性。

64. 发明授权

US5126202A Magnetic recording medium containing ferro magnetic powder, polar group containing resins in a specific ratio and carbon black of a specific size range 失效
标题翻译：含有铁磁粉末，特定比例的含极性基团的树脂和特定尺寸范围的炭黑的磁记录介质
公开(公告)号：US5126202A
公开(公告)日：1992-06-30
申请号：US190846
申请日：1988-05-06
申请人： Hiroo Inaba , Takeshi Kakuta , Koichi Yamauchi , Akihiro Matsufuji
发明人： Hiroo Inaba , Takeshi Kakuta , Koichi Yamauchi , Akihiro Matsufuji
IPC分类号： C09D5/23 , C09D127/04 , C09D127/06 , C09D175/00 , C09D175/04 , G11B5/702 , G11B5/708 , G11B5/714
CPC分类号： G11B5/7023 , G11B5/708 , G11B5/714 , Y10S428/90 , Y10T428/2982 , Y10T428/31609
摘要： A magnetic recording medium comprising a nonmagnetic support having provided thereon a magnetic layer comprising a ferromagnetic powder dispersed in a binder, wherein said ferromagnetic powder has a specific surface area of 40 m.sup.2 /g or more as measured by the BET method; said magnetic layer further comprises carbon black having an average particle diameter of from about 20 to 120 m.mu.; and said binder comprises the combination of (1) a vinyl chloride resin containing a phosphate ester group represented by ##STR1## wherein M.sub.1 and M.sub.2, which may be the same or different, each represents Na, K, Li, H, N.sym.R.sub.3, or N.sym.HR.sub.2 wherein R represents an alkyl group or a hydrogen atom, and (2) at least one resin other than said vinyl chloride resin containing at least one of --SO.sub.3 M, --OSO.sub.2 M, --COOM, and ##STR2## wherein M, M.sub.1, and M.sub.2, which may be the same or different, each represents Na, K, Li, H, N.sup.4 .sym. R.sub.3, or N.sup..sym. HR.sub.2 wherein R represents an alkyl group or a hydrogen atom; provided that the weight ratio of said resin other than said vinyl chloride resin to said vinyl chloride resin is from about 0.4 to 2.5.
摘要翻译：一种包含非磁性载体的磁记录介质，其上设置有包含分散在粘合剂中的铁磁性粉末的磁性层，其中所述铁磁性粉末通过BET法测量的比表面积为40m 2 / g以上; 所述磁性层还包含平均粒径为约20至120μm的炭黑; 并且所述粘合剂包含（1）含有由下式表示的磷酸酯基的氯乙烯树脂的组合，其中M1和M2可以相同或不同，各自表示Na，K，Li，H，N（+ ）R3或N（+）HR2，其中R表示烷基或氢原子，和（2）至少一种除所述氯乙烯树脂以外的至少一种树脂，其含有-SO 3 M，-OSO 2 M，-COOM，其中M，M1和M2可以相同或不同，分别表示Na，K，Li，H，N4（+）R3或N（+）HR2，其中R表示烷基或氢原子 ; 所述氯乙烯树脂以外的所述树脂与所述氯乙烯树脂的重量比为约0.4〜2.5。

65. 发明授权

US5112680A Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US5112680A
公开(公告)日：1992-05-12
申请号：US185214
申请日：1988-04-25
申请人： Hiroo Inaba , Takeshi Kakuta , Koichi Yamauchi , Akihiro Matsufuji
发明人： Hiroo Inaba , Takeshi Kakuta , Koichi Yamauchi , Akihiro Matsufuji
IPC分类号： C09D5/23 , C09D127/04 , C09D127/06 , C09D175/00 , C09D175/04 , G11B5/702 , G11B5/708 , G11B5/714
CPC分类号： G11B5/7085 , G11B5/7023 , G11B5/714 , Y10S428/90 , Y10T428/257 , Y10T428/30
摘要： A magnetic recording medium comprising a nonmagnetic support having provided thereon a magnetic layer comprising a ferromagnetic powder dispersed in a binder, wherein said ferromagnetic powder has a specific surface area of 40 m.sup.2 /g or more as measured by the BET method; said magnetic layer further comprises Al.sub.2 O.sub.3 particles having an average particle diameter of from about 0.1 to 0.5 .mu.m; and said binder comprises the combination of (1) a vinyl chloride resin containing a phosphate ester group represented by ##STR1## wherein M.sub.1 and M.sub.2, which may be the same or different, each represents Na, K, Li, H, N.sym.R.sub.3, or N.sym.HR.sub.2 wherein R represents an alkyl group or a hydrogen atom, and (2) at least one resin other than said vinyl chloride resin containing at least one of --SO.sub.3 M, --OSO.sub.2 M, --COOM, and ##STR2## wherein M, M.sub.1, and M.sub.2, which may be the same or different, each represents Na, K, Li, H, N.sym.R.sub.3, or N.sym.HR.sub.2 wherein R represents an alkyl group or a hydrogen atom; provided that the weight ratio of said resin other than said vinyl chloride resin to said vinyl chloride resin is from about 0.4 to 2.5.
摘要翻译：一种包含非磁性载体的磁记录介质，其上设置有包含分散在粘合剂中的铁磁性粉末的磁性层，其中所述铁磁性粉末通过BET法测量的比表面积为40m 2 / g以上; 所述磁性层还包含平均粒径为约0.1至0.5μm的Al 2 O 3颗粒; 并且所述粘合剂包含（1）含有由下式表示的磷酸酯基的氯乙烯树脂的组合，其中M1和M2可以相同或不同，各自表示Na，K，Li，H，N（+ ）R3或N（+）HR2，其中R表示烷基或氢原子，和（2）至少一种除了含有-SO 3 M，-OSO 2 M，-COOM和其中M，M1和M2可以相同或不同，分别表示Na，K，Li，H，N（+）R3或N（+）HR2，其中R表示烷基或氢原子 ; 所述氯乙烯树脂以外的所述树脂与所述氯乙烯树脂的重量比为约0.4〜2.5。

66. 发明授权

US5045372A Magnetic recording medium containing ferromagnetic metal powder and a specific fatty acid ester in a content dependent upon the specific surface area of the ferromagnetic metal powder 失效
标题翻译：含有铁磁性金属粉末和特定脂肪酸酯的磁记录介质，其含量取决于强磁性金属粉末的比表面积
公开(公告)号：US5045372A
公开(公告)日：1991-09-03
申请号：US466809
申请日：1990-01-18
申请人： Yasushi Endo , Mikihiko Kato , Yasuo Nagashima , Yasuyuki Yamada
发明人： Yasushi Endo , Mikihiko Kato , Yasuo Nagashima , Yasuyuki Yamada
IPC分类号： G11B5/71 , G11B5/714
CPC分类号： G11B5/71 , G11B5/714 , Y10S428/90 , Y10T428/2982
摘要： A magnetic recording medium having on a non-magnetic support a magnetic layer mainly composed of a ferromagnetic metal powder and a binder resin is disclosed, wherein the specific surface area S (m.sup.2 /g) of the ferromagnetic metal powder is from 30 to 65 and the magnetic layer further contains a fatty acid ester in a content Y (% by weight) to the ferromagnetic metal powder of the range of 0.05S+5.5.ltoreq.Y.ltoreq.-0.2S+24 when the specific surface area S is from 30 to less than 50 and the range of 0.06S+4.7.ltoreq.Y.ltoreq.-0.13S+21 when the specific surface area S is from 50 to 65. The magnetic recording medium is suitable for high density recording and exhibits excellent running durability.
摘要翻译：公开了一种磁性记录介质，其特征在于，磁性金属粉末的比表面积S（m 2 / g）为30〜65，非磁性载体为主要由强磁性金属粉末和粘结剂树脂构成的磁性层，磁性层还含有当比表面积S为0.05S +5.5≤X≤0.2S+ 24范围的铁磁性金属粉末的含量Y（重量％）的脂肪酸酯当比表面积S为50至65时，从30至小于50，且0.06S + 4.7

67. 发明授权

US4915728A Iron/cobalt alloy filaments 失效
标题翻译：铁/钴合金丝
公开(公告)号：US4915728A
公开(公告)日：1990-04-10
申请号：US252100
申请日：1988-10-03
申请人： Thomas E. Schell
发明人： Thomas E. Schell
IPC分类号： B22F1/00 , B22F9/30 , C23C16/16 , G11B5/706 , G11B5/714 , H01F1/06
CPC分类号： C23C16/16 , B22F1/004 , B22F9/30 , G11B5/70621 , G11B5/714 , H01F1/065 , B22F2999/00 , Y10S75/952
摘要： A method of generating iron/cobalt alloy filaments which includes atomizing and spraying a solution of dicobalt octacarbonyl in iron pentacarbonyl through an atomizing hole (12) into a reaction chamber (14) surrounded by a solenoidal field (19), while simultaneously decomposing the solution to produce iron/cobalt filaments.
摘要翻译：一种生成铁/钴合金细丝的方法，其包括通过雾化孔（12）将五羰基二钴二羰基铁溶液雾化并喷射到由螺线管场（19）围绕的反应室（14）中，同时分解溶液生产铁/钴细丝。

68. 发明授权

US4911997A Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US4911997A
公开(公告)日：1990-03-27
申请号：US080178
申请日：1987-07-31
申请人： Takamitsu Asai , Masaaki Fujiyama
发明人： Takamitsu Asai , Masaaki Fujiyama
IPC分类号： G11B5/706 , C09D5/23 , C09D7/12 , G11B5/714 , G11B5/716
CPC分类号： G11B5/716 , Y10T428/256 , Y10T428/257
摘要： A magnetic recording medium whose output is increased over a wide range of from long wavelengths to short wavelengths and whose output fluctuation with rotation period is decreased when rotating and reproducing in the form of a disk is provided comprising a non-magnetic support and a magnetic layer provided thereon containing a ferromagnetic substance, the magnetic layer having a multilayer structure consisting of a lower layer containing a ferromagnetic substance in an ellipsoidal shape with ##EQU1## and a saturation magnetization of at least 60 emu/g and an upper layer containing a ferromagnetic substance of plate-shaped hexagonal system having the axis of easy magnetization in the vertical direction to the plate surface.
摘要翻译：一种磁记录介质，其在从长波长到短波长的宽范围内增加输出，并且当以盘的形式旋转和再现时，其旋转周期的输出波动减小，包括非磁性支撑和磁性层在其上设置有含有铁磁物质的磁性层，该磁性层具有多层结构，该多层结构由含有椭圆形状的铁磁物质和至少60emu / g的饱和磁化强度的下层组成，上层含有铁磁性物质具有在与板表面垂直的方向上容易磁化的轴的板状六边形系统。

69. 发明授权

US4822634A Longitudinal magnetic coated recording medium 失效
标题翻译：纵向磁性涂层记录介质
公开(公告)号：US4822634A
公开(公告)日：1989-04-18
申请号：US039226
申请日：1987-04-17
申请人： Jun Takahashi , Shigeru Fukushima , Toshikatu Narumi , Ken-ich Itoh , Seiya Ogawa
发明人： Jun Takahashi , Shigeru Fukushima , Toshikatu Narumi , Ken-ich Itoh , Seiya Ogawa
IPC分类号： G11B5/70 , G11B5/706 , G11B5/708 , G11B5/714 , G11B5/845
CPC分类号： G11B5/708 , G11B5/70 , G11B5/70652 , G11B5/70678 , G11B5/714 , G11B5/845 , Y10S428/90 , Y10T428/25
摘要： A longitudinal magnetic coated recording medium includes at least planar magnetic particles, each having an easy magnetization axis perpendicular to the planar surface thereof, preferably mixed with other particles, and dispersed in a magnetic film formed on a nonmagnetic substrate, having a orientation angle of -30.degree. to +30.degree.. A process for producing such a recording medium includes the step of orienting the planar magnetic particles by applying a magnetic field approximately in parallel to the surface of the magnetic film.

70. 发明授权

US4788092A Disc-shaped magnetic recording medium 失效
标题翻译：盘形磁记录介质
公开(公告)号：US4788092A
公开(公告)日：1988-11-29
申请号：US535011
申请日：1983-09-09
申请人： Ryoji Chubachi , Yoshihisa Kawamura , Nobuyuki Nihei
发明人： Ryoji Chubachi , Yoshihisa Kawamura , Nobuyuki Nihei
IPC分类号： G11B5/82 , C09D5/23 , C09D127/04 , C09D127/06 , C09D175/00 , C09D175/04 , G11B5/70 , G11B5/706 , G11B5/845 , G11B5/714
CPC分类号： G11B5/70 , Y10S428/90 , Y10T428/25 , Y10T428/257
摘要： The present invention provides a disc-shaped magnetic recording medium particularly suitable for high density recording obtainable a high output power with low noise. In the disc-shaped magnetic recording medium according to the present invention, a ferromag netic powder having a coercive force of about 1,000 Oe or higher and a BET specific surface area in the range from about 25 to 70 m.sup.2 /g is employed. This allows a decrease in noise level and satisfies the electromagnetic performance requirements for high density recording. A random (unoriented) orientation or a circumferential orientation of the ferromagnetic powder in the magnetic layer provides high output power without causing a variation in output power.
摘要翻译： PCT No.PCT / JP83 / 00007 Sec。 371日期1983年9月9日 102（e）1983年9月9日PCT PCT 1月10日PCT公布。出版物WO83 / 02520 日期：1983年7月21日。本发明提供一种特别适合于高密度记录的盘形磁记录介质，可获得具有低噪声的高输出功率。在根据本发明的盘形磁记录介质中，采用矫顽力为约1000Oe或更高，BET比表面积为约25至70m2 / g的铁粉。这允许降低噪声水平并满足高密度记录的电磁性能要求。磁性层中的铁磁性粉末的随机（无取向）取向或圆周方向提供高输出功率而不引起输出功率的变化。

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