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21. 发明授权

US4664965A Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US4664965A
公开(公告)日：1987-05-12
申请号：US684319
申请日：1984-12-20
申请人： Tsutomu Okita , Hiroshi Hashimoto , Yoshito Mukaida
发明人： Tsutomu Okita , Hiroshi Hashimoto , Yoshito Mukaida
IPC分类号： G11B5/73 , G11B5/704
CPC分类号： G11B5/7305 , Y10S428/90 , Y10T428/24372 , Y10T428/24413 , Y10T428/24942 , Y10T428/265 , Y10T428/31609 , Y10T428/31935
摘要： A magnetic recording medium is disclosed, which comprises a non-magnetic support having a surface roughness of not less than 0.01 .mu.m having thereon an intermediate layer and a magnetic layer, the intermediate layer comprising a polyester polyol having at least two acryloyl and/or methacryloyl groups in the molecule thereof, which has been polymerization-hardened by exposure to radiation. The magnetic recording medium has markedly improved video sensitivity, C/N ratio and adhesiveness between the support and the magnetic layer.
摘要翻译：公开了一种磁记录介质，其包括表面粗糙度不小于0.01μm的非磁性载体，其上具有中间层和磁性层，所述中间层包含具有至少两个丙烯酰基和/或其分子中的甲基丙烯酰基已经通过暴露于辐射聚合硬化。磁记录介质显着提高了视频灵敏度，C / N比和支持层与磁性层之间的粘合性。

22. 发明授权

US4391874A Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US4391874A
公开(公告)日：1983-07-05
申请号：US350510
申请日：1982-02-19
申请人： Nobuyuki Yamamoto , Kyoichi Naruo , Tsutomu Okita
发明人： Nobuyuki Yamamoto , Kyoichi Naruo , Tsutomu Okita
IPC分类号： G11B5/64 , C10M105/32 , C10N40/18 , G11B5/66 , G11B5/72 , G11B5/725 , G11B5/735 , B32B15/08 , H01F10/00
CPC分类号： G11B5/66 , G11B5/725 , Y10S428/90 , Y10T428/265 , Y10T428/31678
摘要： A magnetic recording medium having a thin magnetic film on a non-magnetic support base is disclosed. A layer of isocyanic acid ester is formed in connection with the medium, and may be formed on either the surface of the metal film or the surface of the base opposite the metal film or both. The resulting medium has excellent running properties, wear resistance and electro-to-magnetic conversion characteristics which are maintained after repeated use.
摘要翻译：公开了一种在非磁性支撑基底上具有薄磁膜的磁记录介质。与介质结合形成异氰酸酯层，并且可以形成在金属膜的表面或与金属膜相反的基底的表面上或两者上。所得到的介质具有优异的运行性能，耐磨性和电 - 磁转换特性，其在重复使用后保持。

23. 发明授权

US06376083B1 Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US06376083B1
公开(公告)日：2002-04-23
申请号：US08532976
申请日：1995-09-22
申请人： Yuichiro Murayama , Masaki Satake , Hiroshi Hashimoto , Tsutomu Okita
发明人： Yuichiro Murayama , Masaki Satake , Hiroshi Hashimoto , Tsutomu Okita
IPC分类号： G11B5702
CPC分类号： G11B5/7021 , Y10S428/90 , Y10T428/31609
摘要： The present invention provides a magnetic recording medium having high dispersion property, good running durability and good preservation property, and it comprises at least one magnetic layer having ferromagnetic powder dispersed by a binder placed on a non-magnetic support member, whereby a polyurethane resin or a polyurethane urea resin consisting of 5 mol % or less of a long chain diol having weight average molecular weight of 800 to 5,000, a short chain diol having weight average molecular weight of 50 to 500 and/or a short chain diamine and an organic diisocyanate is contained as the binder, said long chain diol has one polar group selected from —COOM, —SO3M, —OSO3M, —OPO(OM)2, or —PO(OM)2 (where M represents a hydrogen atom, an alkali metal ion, or an ammonium ion) in the molecule, and the polar group is contained in the polyurethane by 1 to 5 mol %.
摘要翻译：本发明提供了具有高分散性，良好的运行耐久性和良好保存性的磁记录介质，并且它包括至少一个磁性层，该磁性层具有通过放置在非磁性支撑构件上的粘合剂分散的铁磁性粉末，由此聚氨酯树脂或由5重量％以下的重均分子量为800〜5000的长链二醇，重均分子量为50〜500的短链二醇和/或短链二胺和有机二异氰酸酯组成的聚氨酯脲树脂所述长链二醇具有一个选自-COOM，-SO3M，-OSO3M，-OPO（OM）2或-PO（OM）2的极性基团（其中M表示氢原子，碱金属离子或铵离子），聚氨酯中的极性基团含有1〜5摩尔％。

24. 发明授权

US5484661A Magnetic recording medium having a polyvinyl alkyl binder resin 失效
标题翻译：具有聚乙烯基烷基粘合剂树脂的磁记录介质
公开(公告)号：US5484661A
公开(公告)日：1996-01-16
申请号：US179942
申请日：1994-01-11
申请人： Hiroshi Hashimoto , Masaki Satake , Yuichiro Murayama , Tsutomu Okita
发明人： Hiroshi Hashimoto , Masaki Satake , Yuichiro Murayama , Tsutomu Okita
IPC分类号： C08F8/34 , C09D5/23 , C09D129/14 , G11B5/702 , G11B5/716 , G11B5/735 , G11B5/738 , G11B5/00
CPC分类号： G11B5/7023 , G11B5/735 , G11B5/738 , Y10S428/90 , Y10T428/31935
摘要： A binder for a magnetic recording medium which contains a polyvinyl alkylal resin modified by a sultone to introduce thereinto an atom group containing a polar group. Also disclosed is a magnetic recording medium that uses the above-described binder in a magnetic layer, a non-magnetic layer, a protective layer, an undercoat layer, etc. The binder and the magnetic recording medium are superior in dispersibility and exhibit high magnetic coating strength.
摘要翻译：一种用于磁记录介质的粘合剂，其包含由磺内酯改性的聚乙烯基烷基树脂以引入含有极性基团的原子团。还公开了在磁性层，非磁性层，保护层，底涂层等中使用上述粘合剂的磁记录介质。粘合剂和磁记录介质具有优异的分散性并表现出高磁性涂层强度。

25. 发明授权

US5051318A Magnetic recording medium containing an organic silicone compound having branched chaw saturated hydrocarbon groups 失效
标题翻译：含有具有分支链饱和烃基的有机硅氧烷化合物的磁记录介质
公开(公告)号：US5051318A
公开(公告)日：1991-09-24
申请号：US423289
申请日：1999-10-18
申请人： Yasuo Nishikawa , Tsutomu Okita
发明人： Yasuo Nishikawa , Tsutomu Okita
IPC分类号： G11B5/708 , C09D5/23 , C09D7/12 , C10M105/76 , C10M107/50 , C10N40/18 , G11B5/71
CPC分类号： G11B5/71 , Y10S428/90 , Y10T428/31663
摘要： A magnetic recording medium is disclosed, which comprises a non-magnetic support having thereon a magnetic layer comprising ferromagnetic particles dispersed in a binder, said magnetic layer containing an organic silicone compound modified with a branched chain saturated fatty acid, and represented by formula (I): ##STR1## wherein R, R', and R" each represents a branched chain saturated hydrocarbon group having 7 to 24 carbon atoms; m represents an integer of 1 to 100; n represents an integer of 0 to 250; m+n.ltoreq.300; and m.gtoreq.n/5.
摘要翻译：公开了一种磁记录介质，其包括其上具有包含分散在粘合剂中的铁磁颗粒的磁性层的非磁性载体，所述磁性层含有用支链饱和脂肪酸改性的有机硅氧烷化合物，并且由式（I ）：其中R，R'和R“各自表示具有7至24个碳原子的支链饱和烃基; m表示1〜100的整数， n表示0〜250的整数， m + n <= 300; 和m> / = n / 5。

26. 发明授权

US5049448A Magnetic recording medium containing an ester lubricant branched from the number 2 carbon position of the acid residue 失效
标题翻译：含有从酸残基的2碳位分支的酯润滑剂的磁记录介质
公开(公告)号：US5049448A
公开(公告)日：1991-09-17
申请号：US383514
申请日：1989-07-24
申请人： Takao Ohya , Yasuo Nishikawa , Jun Nakagawa , Fusao Yamanaka , Toshio Kawamata , Tsutomu Okita , Hiroshi Hashimoto , Mikihiko Kato
发明人： Takao Ohya , Yasuo Nishikawa , Jun Nakagawa , Fusao Yamanaka , Toshio Kawamata , Tsutomu Okita , Hiroshi Hashimoto , Mikihiko Kato
IPC分类号： C09D5/23 , G11B5/71 , G11B5/725
CPC分类号： G11B5/725 , G11B5/71 , Y10S428/90 , Y10T428/31 , Y10T428/31605 , Y10T428/31609
摘要： A magnetic recording medium is disclosed, comprising a nonmagnetic support having thereon a magnetic layer, wherein at least one of ester compounds represented by formula (I) is present in or on the magnetic layer, ##STR1## wherein R.sub.1 represents a straight chain, saturated alkyl group having 6 to 12 carbon atoms, R.sub.2 represents a straight chain, saturated alkyl group having 4 to 10 carbon atoms, and R represents a branched or straight chain alkyl group having 4 to 22 carbon atoms.
摘要翻译：公开了一种磁记录介质，其包括其上具有磁性层的非磁性载体，其中至少一种由式（I）表示的酯化合物存在于磁性层中或其上，其中R1表示直链具有6〜12个碳原子的链状饱和烷基，R2表示直链，碳原子数4〜10的饱和烷基，R表示碳原子数为4〜22的支链或直链烷基。

27. 发明授权

US4952435A Adhesive for a base-mounted flexible magnetic disc 失效
标题翻译：用于基座安装的柔性磁盘的粘合剂
公开(公告)号：US4952435A
公开(公告)日：1990-08-28
申请号：US914958
申请日：1986-10-03
申请人： Tsutomu Okita
发明人： Tsutomu Okita
IPC分类号： G11B5/735 , G11B5/82
CPC分类号： G11B5/825 , G11B5/735 , Y10S428/90
摘要： A magnetic disk in which a flexible non-magnetic sheet support has a magnetic layer formed on one side and its other side is bonded to mounting rings formed on a base such that a gap is formed between the support and the base. A non-solvent type adhesive is used for the bonding, such as, a hot-melt rubber resin or a radiation cured acryl or rubber adhesive.
摘要翻译：其中柔性非磁性片材支撑体具有形成在一侧上的磁性层并且其另一侧的磁盘结合到形成在基座上的安装环，使得在支撑件和基座之间形成间隙。非溶剂型粘合剂用于粘合，例如热熔橡胶树脂或辐射固化的丙烯酸或橡胶粘合剂。

28. 发明授权

US4711809A Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US4711809A
公开(公告)日：1987-12-08
申请号：US654286
申请日：1984-09-25
申请人： Yasuo Nishikawa , Tsutomu Okita , Yoshito Mukaida , Masahiro Niinomi , Kenji Yanagihara , Mituo Kimura
发明人： Yasuo Nishikawa , Tsutomu Okita , Yoshito Mukaida , Masahiro Niinomi , Kenji Yanagihara , Mituo Kimura
IPC分类号： G11B5/72
CPC分类号： G11B5/72 , Y10S428/90 , Y10T428/265 , Y10T428/3154 , Y10T428/31544
摘要： A magnetic recording medium is disclosed which comprises a support having provided thereon a thin magnetic metal film, a plasma polymerized layer being provided on the thin magnetic film, in which the plasma polymerized layer is formed in a monomer gas or in a gas containing the monomer gas of at least one of compounds represented by the following general formulae (I) or (II), ##STR1## wherein A represents a hydrogen atom or a fluorine atom, B represents a hydrogen atom, a chlorine atom or an alkyl group having 1 to 4 carbon atoms, an alkenyl group having 2 to 4 carbon atoms, an alkoxy group having 1 to 4 carbon atoms, an alkanoyloxy group having 1 to 4 carbon atoms, which is unsubstituted or substituted with a fluorine atom, D represents a hydrogen atom, --R, --O--R, ##STR2## where R represents an alkyl group having 1 to 4 carbon atoms or an alkenyl group having 2 to 4 carbon atoms.
摘要翻译：公开了一种磁记录介质，其包括在其上设置有薄磁性金属膜的支撑体，在薄磁性膜上设置有等离子体聚合层，其中等离子体聚合层形成在单体气体或含有单体的气体中由下列通式（I）或（II）表示的至少一种化合物的气体，其中A表示氢原子或氟原子，B表示氢原子，碳原子数为1〜4的氯原子或烷基，碳原子数2〜4的烯基，碳原子数1〜4的烷氧基，碳原子数1〜4的烷酰氧基，未取代或取代的具有氟原子，D表示氢原子，-R，-OR，其中R表示具有1至4个碳原子的烷基或具有2至4个碳原子的链烯基。

29. 发明授权

US4690870A Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US4690870A
公开(公告)日：1987-09-01
申请号：US654290
申请日：1984-09-25
申请人： Tsutomu Okita , Nobuo Tsuji , Hiroshi Hashimoto , Yoshito Mukaida
发明人： Tsutomu Okita , Nobuo Tsuji , Hiroshi Hashimoto , Yoshito Mukaida
IPC分类号： C09D5/23 , C09D101/18 , C09D127/04 , C09D127/06 , C09D175/04 , C09D175/14 , G11B5/702
CPC分类号： G11B5/7026 , G11B5/7022 , Y10S428/90 , Y10T428/31609 , Y10T428/31935 , Y10T428/31971
摘要： A magnetic recording medium comprising a non-magnetic support having thereon an electron-beam radiation-cured magnetic recording layer, said magnetic layer comprising a ferromagnetic oxide and a binder comprising(1) a resin selected from the group consisting of a vinyl resin containing a carboxylic group in an amount of about 5.times.10.sup.-5 to 2.times.10.sup.-3 equivalent per gram and a nitrocellulose resin;(2) an urethane resin having at least one terminal acrylate group in the main chain or in a side chain of the molecule; and(3) a compound having at least one acryloyl group which is obtained by modifying the isocyanate group of a polyisocyanate having at least two isocyanate groups per molecule.
摘要翻译：一种磁记录介质，包括其上具有电子束辐射固化磁记录层的非磁性载体，所述磁性层包含铁磁性氧化物和粘合剂，所述粘合剂包括（1）选自乙烯基树脂中的树脂，羧基的量为约5×10-5至2×10-3当量/克和硝酸纤维素树脂; （2）在分子的主链或侧链中具有至少一个末端丙烯酸酯基团的聚氨酯树脂; 和（3）具有至少一个丙烯酰基的化合物，其通过每分子具有至少两个异氰酸酯基团的多异氰酸酯的异氰酸酯基进行改性而获得。

30. 发明授权

US4672002A Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US4672002A
公开(公告)日：1987-06-09
申请号：US598098
申请日：1984-04-09
申请人： Tsutomu Okita , Nobuo Tsuji , Yoshito Mukaida
发明人： Tsutomu Okita , Nobuo Tsuji , Yoshito Mukaida
IPC分类号： C09D5/23 , G11B5/702
CPC分类号： G11B5/7026 , G11B5/7022 , Y10S428/90 , Y10T428/31609 , Y10T428/31935
摘要： A magnetic recording medium comprising a support having coated thereon a magnetic layer is disclosed. The magnetic layer contains, as a binder, a composition cured with electron beam comprising (a) at least one of vinyl chloride-vinyl acetate type resins containing 5.times.10.sup.-5 to 1.7.times.10.sup.-3 equivalents of a carboxyl group per gram of the polymer and introcellulose resins, (b) a urethane resin and (c) at least one compound selected from the group consisting of aromatic or alicyclic compounds containing at least two vinyl linkages in the molecule and acryloyl-modified polyisocyanate compounds. The magnetic recording medium has excellent electromagnetic properties and durability.
摘要翻译：公开了一种包括其上涂覆有磁性层的载体的磁记录介质。磁性层含有电子束固化的组合物，该组合物包含（a）每克聚合物含有5×10-5至1.7×10-3当量的羧基的氯乙烯 - 乙酸乙烯酯型树脂中的至少一种，和内层纤维素树脂，（b）聚氨酯树脂和（c）至少一种选自分子中含有至少两个乙烯基键的芳族或脂环族化合物的化合物和丙烯酰基改性的多异氰酸酯化合物。磁记录介质具有优异的电磁特性和耐久性。

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