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71. 发明授权

US4533565A Method for surface treatment of ferromagnetic fine powder and forming a magnetic recording device 失效
标题翻译：铁磁性细粉表面处理方法及形成磁记录装置
公开(公告)号：US4533565A
公开(公告)日：1985-08-06
申请号：US613759
申请日：1984-05-24
申请人： Tsutomu Okita
发明人： Tsutomu Okita
IPC分类号： B22F9/20 , C09D5/23 , C09D7/12 , G11B5/712 , H01F1/06 , H01F1/11
CPC分类号： G11B5/712
摘要： A method for the surface treatment of a ferromagnetic fine powder is disclosed. The method increases the dispersibility of the powder in a magnetic coating composition. The method comprises subjecting a magnetic composition to a dispersing processing, with the magnetic composition containing (1) a ferromagnetic fine powder, (2) at least one polar compound selected from a group consisting of such compounds as to have one or more of --COOH, --CONH.sub.2, --CONH.sub.2, --PO.sub.3 H, --SO.sub.3 H, --OH or --NH.sub.2 in a molecule and quaternary ammonium salts, and (3) an organic solvent capable of dissolving the polar compound, and evaporating the organic solvent from the magnetic composition.
摘要翻译：公开了一种铁磁性细粉末的表面处理方法。该方法增加了粉末在磁性涂料组合物中的分散性。该方法包括使磁性组合物进行分散处理，其中磁性组合物含有（1）铁磁性细粉末，（2）至少一种选自以下化合物的极性化合物：具有一个或多个-COOH ，-CONH 2，-CONH 2，-PO 3 H，-SO 3 H，-OH或-NH 2，和季铵盐，和（3）能够溶解极性化合物的有机溶剂，并从磁性组合物中蒸发有机溶剂。

72. 发明授权

US4407853A Process for producing a magnetic recording medium 失效
标题翻译：磁记录介质的制造方法
公开(公告)号：US4407853A
公开(公告)日：1983-10-04
申请号：US364346
申请日：1982-04-01
申请人： Tsutomu Okita , Kyoichi Naruo , Goro Akashi
发明人： Tsutomu Okita , Kyoichi Naruo , Goro Akashi
IPC分类号： G11B5/842 , G11B5/845 , H01F10/02 , B05D3/06
CPC分类号： G11B5/845
摘要： A process for producing a magnetic recording medium by applying onto a base a magnetic coating composition comprising ferromagnetic particles dispersed in a solution comprising a compound polymerizable by electron beams and a low boiling solvent is disclosed. The ferromagnetic particles in the applied magnetic coating are oriented while it is still wet, and thereafter the oriented web is irradiated with electron beams within 5 seconds after orientation to retain the ferromagnetic particles orientation and the web is dried by evaporating the solvent.
摘要翻译：公开了一种制造磁记录介质的方法，该方法通过将包含分散在包含可电子束可聚合的化合物的溶液和低沸点溶剂的溶液中的铁磁颗粒涂覆在基底上。所施加的磁性涂层中的铁磁颗粒在其仍然是湿润的同时取向，然后在定向后5秒内用电子束照射定向的网，以保持铁磁颗粒取向，并通过蒸发溶剂来干燥网。

73. 发明授权

US5057373A Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US5057373A
公开(公告)日：1991-10-15
申请号：US330578
申请日：1989-03-30
申请人： Fumihiro Tokunaga , Jun Nakagawa , Tsutomu Okita , Toshio Kawamata
发明人： Fumihiro Tokunaga , Jun Nakagawa , Tsutomu Okita , Toshio Kawamata
IPC分类号： C09D5/23 , C09D127/04 , C09D127/06 , C09D171/00 , C09D171/12 , C09D175/08 , C10M105/74 , C10N40/18 , G11B5/702
CPC分类号： G11B5/7022 , Y10S428/90 , Y10T428/31511 , Y10T428/31609
摘要： A magnetic recording medium comprising a nonmagnetic support having thereon a magnetic layer comprising a binder and ferromagnetic particles dispersed therein, wherein the binder comprises (a) a vinyl chloride resin, (b) a phenoxy resin, (c) a polycarbonate polyurethane resin and (d) a polyisocyanate; and said magnetic layer further comprises at least one lubricating agent selected from the group consisting of polyalkylnenoxide alkylphosphate, an alkali salt thereof, and lecithin.
摘要翻译：一种包含非磁性载体的磁性记录介质，其上具有分散在其中的粘合剂和铁磁颗粒的磁性层，其中所述粘合剂包括（a）氯乙烯树脂，（b）苯氧基树脂，（c）聚碳酸酯聚氨酯树脂和（ d）多异氰酸酯; 并且所述磁性层还包含至少一种选自聚烷氧基化烷基磷酸盐，其碱金属盐和卵磷脂的润滑剂。

74. 发明授权

US4937098A Method for manufacturing a magnetic recording medium 失效
标题翻译：磁记录介质的制造方法
公开(公告)号：US4937098A
公开(公告)日：1990-06-26
申请号：US340743
申请日：1989-04-20
申请人： Yasuo Nishikawa , Mikio Ohno , Masaaki Fujiyama , Tsutomu Okita
发明人： Yasuo Nishikawa , Mikio Ohno , Masaaki Fujiyama , Tsutomu Okita
IPC分类号： G11B5/842 , G11B5/712 , H01F1/06
CPC分类号： G11B5/712 , Y10S428/90
摘要： A method for manufacturing a magnetic recording medium is disclosed, comprising ferromagnetic alloy powders having an average length in the long axis of 0.3 .mu.m or less and a specific surface area (BET Method) of 45 m.sup.2 /g or more, by steps which comprise surface-treating the ferromagnetic alloy powders with at least one triazine thiol compound, dispersing the surface-treated powders in a binder, and then coating the binder containing the surface-treated powders on a nonmagnetic support, wherein the ferromagnetic alloy powders are surface-treated with a triazine thiol compound represented by formula (I) in a condition in which the moisture content of the ferromagnetic alloy powders is 0.5 wt % or less, in a system of substantially excluded moisture: ##STR1## wherein R represents R.sub.1 O--, R.sub.1 S--, R.sub.1 NH--, or R.sub.1 R.sub.2 N--R.sub.1 --, R.sub.1 and R.sub.2, which may be the same or different, each represents an alkyl, alkenyl, aryl, aralkyl, cycloalkyl or alkanol group having from 1 to 18 carbon atoms, and M.sub.1 and M.sub.2, which may be the same or different, each represents H, alkali metal or ammonium.
摘要翻译：公开了一种磁记录介质的制造方法，其特征在于，包括长轴的平均长度为0.3μm以下，比表面积（BET法）为45m 2 / g以上的铁磁性合金粉末，用至少一种三嗪硫醇化合物对铁磁性合金粉末进行表面处理，将表面处理的粉末分散在粘合剂中，然后将含有表面处理粉末的粘合剂涂布在非磁性载体上，其中将铁磁性合金粉末进行表面处理在具有基本上排除的水分的体系中，在铁磁性合金粉末的水分含量为0.5重量％以下的条件下，由式（I）表示的三嗪硫醇化合物：其中R表示R 1 O- ，R1S-，R1NH-或R1R2N-R1，R1和R2可以相同或不同，表示具有1至18个碳原子的烷基，烯基，芳基，芳烷基，环烷基或链烷醇基，M1 和M2，w 其可以相同或不同，各自表示H，碱金属或铵。

75. 发明授权

US4880692A Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US4880692A
公开(公告)日：1989-11-14
申请号：US171360
申请日：1988-03-21
申请人： Katsumi Ryoke , Masatoshi Takahashi , Akihiro Hashimoto , Tsutomu Okita , Kazuko Hanai
发明人： Katsumi Ryoke , Masatoshi Takahashi , Akihiro Hashimoto , Tsutomu Okita , Kazuko Hanai
IPC分类号： C09D5/23 , C09D127/04 , C09D127/06 , C09D175/00 , C09D175/04 , G11B5/73 , G11B5/735
CPC分类号： G11B5/735 , Y10S428/90 , Y10T428/25 , Y10T428/265
摘要： A magnetic recording medium comprising a support having provided on one surface thereof a magnetic recording layer containing ferromagnetic particles dispersed in a binder and on the other surface thereof a backing layer, wherein said binder comprises a vinyl chloride/vinyl acetate copolymer reisn containing at least one group represented by formula (I) or (II): ##STR1## wherein X represents a --COO-- group, a --CONH-- group, or a --C.sub.6 H.sub.4 -- group; x represents an integer of from 1 to 10; R.sub.1, R.sub.2, and R.sub.3 each represents a hydrogen atom, an alkyl group having from 1 to 10 carbon atoms, or an alkyl derivative having from 1 to 10 carbon atoms, or R.sub.1, R.sub.2, and R.sub.3 may be combined to each other to form a heterocycric ring; and Y.sup..crclbar. represents a halogen atom, ClO.sub.4.sup..crclbar., or HgI.sub.3.sup..crclbar. ; or Y.sup..crclbar. is bound to R.sub.2, R.sub.2 represents an alkylene group having from 1 to 10 carbon atoms, and Y.sup..crclbar. represents a --COO.sup..crclbar. group, an --SO.sub.3.sup..crclbar. group, or an --OSO.sub.3.sup..crclbar. group.
摘要翻译：一种磁记录介质，其包括在其一个表面上设置有包含分散在粘合剂中的铁磁颗粒的磁记录层和在其另一表面上的背衬层的支撑体，其中所述粘合剂包括含有至少一个的氯乙烯/乙酸乙烯酯共聚物（I）或（II）表示的基团：其中X表示-COO-基团，-CONH-基团或-C 6 H 4 - 基团; x表示1〜10的整数， R1，R2和R3各自表示氢原子，具有1至10个碳原子的烷基或具有1至10个碳原子的烷基衍生物，或者R1，R2和R3可以彼此结合形成杂环; Y（ - ）表示卤素原子，ClO 4（ - ）或HgI 3（ - ）; 或Y（ - ）与R 2结合，R 2表示具有1〜10个碳原子的亚烷基，Y（ - ）表示-COO（ - ）基，-SO 3（ - ）基或-OSO 3（ - ）组。

76. 发明授权

US4873138A Metallic thin film type magnetic recording medium 失效
标题翻译：金属薄膜型磁记录介质
公开(公告)号：US4873138A
公开(公告)日：1989-10-10
申请号：US309327
申请日：1988-10-18
申请人： Tsutomu Okita
发明人： Tsutomu Okita
IPC分类号： C23C14/00 , C23C14/24 , G11B5/64 , G11B5/72 , G11B5/84
CPC分类号： G11B5/72 , Y10S428/90 , Y10T428/265
摘要： A magnetic recording medium with a magnetic thin film as a magnetic recording layer is described. The medium is comprised of a polymer support, a ferromagnetic metal thin film on the support, a plasma polymerization layer 20 to 270 .ANG. in thickness on the thin film, and a lubricating layer on the plasma polymerization layer. The lubricating layer is made of at least one member selected from compounds having a carbon-carbon unsaturated group at the terminal thereof and containing at least 8 carbon atoms. This magnetic recording medium is superior in corrosion protection, running properties, and durability, and moreover, has good electromagnetic properties.
摘要翻译：描述了具有磁性薄膜作为磁记录层的磁记录介质。介质由聚合物载体，载体上的强磁性金属薄膜，薄膜上的厚度为20至270的等离子体聚合层和等离子体聚合层上的润滑层组成。润滑层由选自在其末端具有碳 - 碳不饱和基团并且含有至少8个碳原子的化合物中的至少一种构成。该磁记录介质的腐蚀保护性，运行性能和耐久性优异，而且具有良好的电磁特性。

77. 发明授权

US4837081A Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US4837081A
公开(公告)日：1989-06-06
申请号：US39123
申请日：1987-04-16
申请人： Yasuyuki Yamada , Hajime Miyatsuka , Tsutomu Okita , Nobuo Tsuji
发明人： Yasuyuki Yamada , Hajime Miyatsuka , Tsutomu Okita , Nobuo Tsuji
IPC分类号： C08G18/44 , C08L75/04 , C09D5/23 , C09D175/00 , C09D175/04 , C09D175/08 , G11B5/702 , G11B5/706 , G11B5/708
CPC分类号： G11B5/70636 , C08G18/44 , C08L75/04 , G11B5/7022 , Y10S428/90 , Y10T428/257 , Y10T428/31507 , Y10T428/31609
摘要： A magnetic recording medium is described, comprising a non-magnetic support having provided thereon a magnetic layer containing CrO.sub.2 fine particles and a binder, wherein the binder comprises polycarbonate polyurethane in an amount of from about 30 to about 90 wt %, based on the total weight of said binder.
摘要翻译：描述了一种磁记录介质，其包括在其上设置有含有CrO 2微粒和粘合剂的磁性层的非磁性载体，其中所述粘合剂包含约30至约90重量％的聚碳酸酯聚氨酯，基于总计所述粘合剂的重量。

78. 发明授权

US4578299A Flexible magnetic disk sheet 失效
标题翻译：柔性磁盘片
公开(公告)号：US4578299A
公开(公告)日：1986-03-25
申请号：US633560
申请日：1984-07-23
申请人： Mikihiko Kato , Tsutomu Okita , Shigeo Komine , Yasutoshi Okuzawa , Kazuhiko Morita
发明人： Mikihiko Kato , Tsutomu Okita , Shigeo Komine , Yasutoshi Okuzawa , Kazuhiko Morita
IPC分类号： G11B5/72 , C09D133/06 , C09D183/04 , G11B5/725 , G11B5/82 , G11B23/00 , G11B23/033
CPC分类号： G11B5/725 , Y10S428/90 , Y10T428/24322 , Y10T428/24802 , Y10T428/265 , Y10T428/31609 , Y10T428/31786
摘要： A flexible magnetic disk sheet is described, including a central circular hole therein, having a protecting layer formed thereon using (a) a compound including one or more atomic group providing lubricity at at least one end of a main chain or a side chain of molecular of the compound and one or more ester bonds of acrylic acid or methacrylic acid at at least one end of a main chain or a side chain of molecule of the compound, and (b) an aromatic ketone, wherein said protective layer is formed on a surface portion surrounding the edge of the central circular hole of a flexible magnetic disk sheet.
摘要翻译：描述了包括其中的中心圆形孔的柔性磁盘片，其中使用（a）包含一个或多个原子团的化合物在其上形成保护层，所述化合物在分子的主链或侧链的至少一端提供润滑性的化合物和在化合物的分子的主链或侧链的至少一个末端的丙烯酸或甲基丙烯酸的一个或多个酯键，和（b）芳族酮，其中所述保护层形成在围绕柔性磁盘片的中心圆孔的边缘的表面部分。

79. 发明授权

US4518656A Magnetic recording medium and process for producing the same 失效
标题翻译：磁记录介质及其制造方法
公开(公告)号：US4518656A
公开(公告)日：1985-05-21
申请号：US537552
申请日：1983-10-03
申请人： Tsutomu Okita , Kyoichi Naruo
发明人： Tsutomu Okita , Kyoichi Naruo
IPC分类号： C09D5/23 , G11B5/70 , G11B5/702 , G11B5/84 , G11B5/842
CPC分类号： G11B5/7025 , G11B5/842 , Y10S428/90 , Y10T428/2991 , Y10T428/31935 , Y10T428/31975
摘要： A magnetic recording medium and a process for producing a magnetic recording medium are disclosed, the process comprising the steps of applying onto a non-magnetic base a composition comprising (1) a compound having an unsaturated bond polymerizable by electron beams, (2) at least one polymer, (3) ferromagnetic particles, and (4) an organic solvent, and then polymerizing and curing the resulting magnetic layer by irradiation with electron beams, said polymer being such that at least 10% thereof is adsorbed on the ferromagnetic particles in a mixture of 10 parts by weight of a 1 wt % solution of the polymer and 1 part by weight of the ferromagnetic particles.
摘要翻译：公开了磁记录介质和制造磁记录介质的方法，该方法包括以下步骤：向非磁性基底施加组合物，该组合物包含（1）具有通过电子束聚合的不饱和键的化合物，（2）在至少一种聚合物，（3）铁磁颗粒和（4）有机溶剂，然后通过用电子束照射聚合和固化所得到的磁性层，所述聚合物使其至少10％被吸附在铁磁颗粒上 10重量份的1重量％的聚合物溶液和1重量份的铁磁性颗粒的混合物。

80. 发明授权

US4468436A Magnetic recording material 失效
标题翻译：磁记录材料
公开(公告)号：US4468436A
公开(公告)日：1984-08-28
申请号：US452555
申请日：1982-12-23
申请人： Tsutomu Okita , Kiritani Masataka
发明人： Tsutomu Okita , Kiritani Masataka
IPC分类号： G11B5/738 , B05D3/06
CPC分类号： G11B5/738 , Y10S428/90 , Y10T428/31554 , Y10T428/31609 , Y10T428/31928
摘要： A magnetic recording material and a process for producing it are disclosed. The material is excellent in abrasion resistance and has good electric characteristics. The material is obtained by coating on a support a subbing layer having a compound which contains a compound having an unsaturated bond polymerizable upon irradiation with electron beams. Upon the subbing layer is coated a ferromagnetic layer which contains a compound having an unsaturated bond polymerizable upon irradiation with electron beams, an organic solvent capable of dissolving the compound, and a ferromagnetic fine powder. The material is then subjected to an electron-beam irradiating processing to result in the hardening of the subbing and ferromagnetic layers through polymerization.
摘要翻译：公开了磁记录材料及其制造方法。该材料具有优异的耐磨性和良好的电特性。该材料通过在载体上涂布具有含有具有在电子束照射下可聚合的不饱和键的化合物的化合物的底层而获得。在底层涂覆铁氧体层时，该铁磁层含有在电子束照射下可聚合的具有不饱和键的化合物，可溶解该化合物的有机溶剂和铁磁性细粉末。然后对该材料进行电子束照射处理，以通过聚合导致底层和铁磁性层的硬化。

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