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1. 发明授权

US5091268A Magnetic recording medium lubricated by a three component fatty acid ester-fatty acid amide composition 失效
标题翻译：由三组分脂肪酸酯 - 脂肪酸酰胺组合物润滑的磁记录介质
公开(公告)号：US5091268A
公开(公告)日：1992-02-25
申请号：US546183
申请日：1990-06-29
申请人： Yasuo Nishikawa , Akira Kasuga , Tsutomu Okita , Masashi Aonuma
发明人： Yasuo Nishikawa , Akira Kasuga , Tsutomu Okita , Masashi Aonuma
IPC分类号： G11B5/708 , C09D5/23 , C09D127/04 , C09D127/06 , C09D175/06 , C10M105/34 , C10M105/68 , C10N40/18 , G11B5/71 , G11B5/725 , G11B5/73
CPC分类号： G11B5/725 , G11B5/71 , Y10S428/90
摘要： A novel magnetic recording medium is provided comprising a non-magnetic support having provided thereon a magnetic layer comprising a ferromagnetic powder dispersed in a binder, wherein at least one fatty acid amide compound represented by formula (I), at least one fatty acid ester represented by formula (II) and at least one fatty acid ester represented by formula (III) are provided in or on the magnetic layer: ##STR1## wherein R.sup.1 represents a C.sub.13-21 straight-chain saturated hydrocarbon group; ##STR2## wherein R.sup.2 represents a C.sub.12-21 straight-chain or branched saturated or unsaturated hydrocarbon group; and R.sup.3 represents a C.sub.1-10 straight-chain or branched saturated or unsaturated hydrocarbon group; ##STR3## wherein R.sup.4 represents a C.sub.12-21 straight-chain or branched saturated or unsaturated hydrocarbon group; R.sup.5 represents a C.sub.2-3 divalent hydrocarbon group; R.sup.6 represents a C.sub.1-10 straight-chain or branched saturated or unsaturated hydrocarbon group; and n represents an integer of from 1 to 10 where n may be the same or different when the magnetic layer contains two or more compounds represented by formula (III).
摘要翻译：提供了一种新颖的磁记录介质，其包括非磁性载体，其上设置有包含分散在粘合剂中的铁磁粉末的磁性层，其中至少一种由式（I）表示的脂肪酸酰胺化合物，至少一种脂肪酸酯代表通过式（II）和至少一种由式（III）表示的脂肪酸酯提供在磁性层中或其上：其中R1表示C13-21直链饱和烃基; （II）其中R2代表C12-21直链或支链饱和或不饱和烃基; 并且R 3表示C 1-10直链或支链饱和或不饱和烃基; 其中R4代表C12-21直链或支链饱和或不饱和烃基; R5表示C2-3二价烃基; R6表示C1-10直链或支链饱和或不饱和烃基; n表示1〜10的整数，其中当磁性层含有两种或更多种由式（III）表示的化合物时，n可以相同或不同。

2. 发明授权

US5015498A Method for preparing a magnetic recording medium 失效
标题翻译：磁记录介质的制备方法
公开(公告)号：US5015498A
公开(公告)日：1991-05-14
申请号：US462321
申请日：1989-12-27
申请人： Masashi Aonuma , Akira Kasuga , Haruo Masuda
发明人： Masashi Aonuma , Akira Kasuga , Haruo Masuda
IPC分类号： C09D5/23 , C09D127/04 , C09D127/06 , C09D175/06 , C10M105/24 , C10M105/34 , C10M177/00 , C10N40/18 , C10N70/00 , G11B5/71 , G11B5/842
CPC分类号： G11B5/71 , G11B5/842
摘要： A method for preparing a magnetic recording medium comprising a non-magnetic support having coated thereon a magnetic layer of a magnetic coating composition containing ferromagnetic metal particles and a binder, comprising at least (1) a step of mixing and dispersing ferromagnetic metal particles, a binder, and a solvent to prepare magnetic coating composition, (2) a step of adding and mixing lubricating agent therewith and (3) a step of coating the resulting magnetic coating composition on a non-magnetic support.
摘要翻译：一种制备磁性记录介质的方法，其包括在其上涂覆有含有铁磁性金属颗粒和粘合剂的磁性涂料组合物的磁性层的非磁性载体，该磁性涂层组合物至少包括（1）混合和分散铁磁性金属颗粒的步骤，粘合剂和溶剂以制备磁性涂料组合物，（2）将润滑剂加入和混合的步骤和（3）在非磁性载体上涂覆所得磁性涂料组合物的步骤。

3. 发明授权

US4696859A Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US4696859A
公开(公告)日：1987-09-29
申请号：US834680
申请日：1986-02-28
申请人： Takahito Miyoshi , Nobuo Aoki , Takashi Yoneyama , Akira Kasuga , Toshimitu Okutu , Masaaki Fujiyama , Yasutoshi Okuzawa
发明人： Takahito Miyoshi , Nobuo Aoki , Takashi Yoneyama , Akira Kasuga , Toshimitu Okutu , Masaaki Fujiyama , Yasutoshi Okuzawa
IPC分类号： G11B5/708 , C09D5/23 , G11B5/71 , G11B5/714
CPC分类号： G11B5/714 , G11B5/71 , Y10S428/90 , Y10T428/25
摘要： A magnetic recording medium comprising a non-magnetic support having coated thereon a magnetic layer, the magnetic layer containing (i) ferromagnetic alloy particles having an average length in the long axis of 0.25 .mu.m or less and (ii) fatty acid components comprising behenic acid in an amount of 20 to 75 wt%, stearic acid in an amount of 10 to 45 wt% and oleic acid in an amount of 10 to 45 wt% based on the total weight of the three fatty acids.
摘要翻译：一种磁性记录介质，其特征在于，具有涂覆有磁性层的非磁性载体，所述磁性层含有（i）长轴的平均长度为0.25μm以下的铁磁性合金粒子，（ii）包含山嵛酸的脂肪酸成分 20至75重量％的酸，10至45重量％的硬脂酸和基于三个脂肪酸总重量的10至45重量％的油酸。

4. 发明授权

US4571364A Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US4571364A
公开(公告)日：1986-02-18
申请号：US649326
申请日：1984-09-10
申请人： Akira Kasuga , Akihiro Matsufuji , Yasuyuki Yamada , Nobuo Tsuji
发明人： Akira Kasuga , Akihiro Matsufuji , Yasuyuki Yamada , Nobuo Tsuji
IPC分类号： C08G18/83 , C09D5/23 , C09D127/04 , C09D127/06 , C09D175/00 , C09D175/04 , G11B5/702 , G11B5/714 , G11B5/73 , G11B5/70
CPC分类号： G11B5/714 , G11B5/7021 , Y10S428/90 , Y10T428/256 , Y10T428/257 , Y10T428/265 , Y10T428/31609 , Y10T428/31935
摘要： A magnetic recording medium is described, comprising a non-magnetic support having provided thereon a magnetic layer comprising ferromagnetic particles dispersed in a binder, said ferromagnetic particles having a BET specific surface area of 25 m.sup.2 /g or more, said binder comprising a modified polyurethane resin containing 0.1 meq/g or more of functional groups selected from carboxyl groups, hydroxyl groups, sulfonic acid groups, and epoxy groups, and containing at least three functional groups per molecule of the resin.
摘要翻译：描述了一种磁记录介质，包括其上设置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，所述铁磁性颗粒的BET比表面积为25m 2 / g以上，所述粘合剂包含改性聚氨酯含有0.1meq / g以上选自羧基，羟基，磺酸基和环氧基的官能团的树脂，每分子含有至少三个官能团的树脂。

5. 发明授权

US4496626A Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US4496626A
公开(公告)日：1985-01-29
申请号：US351561
申请日：1982-02-23
申请人： Akira Kasuga , Noburo Hibino , Hajime Miyatsuka
发明人： Akira Kasuga , Noburo Hibino , Hajime Miyatsuka
IPC分类号： C08L67/02 , C08L69/00 , G11B5/73 , G11B5/735 , G11B5/74 , G11B5/64 , G11B5/68
CPC分类号： G11B5/735 , Y10S428/90 , Y10T428/265 , Y10T428/31786
摘要： A magnetic recording medium for high-density recording, which comprises a non-magnetic substrate and a magnetic layer provided on the non-magnetic substrate and containing, as main constituents, ferromagnetic grains and a binder, wherein the non-magnetic substrate surface on the side adjoining the magnetic layer has a surface roughness higher than that of the back surface of the non-magnetic substrate. The substrate surface adjoining the magnetic layer has a surface roughness of 0.007.mu. or more, while the back surface has a surface roughness of 0.02.mu. or less, but in each particular application the roughness of the surface adjoining the magnetic layer is selected to be higher than that of the back surface.
摘要翻译：一种用于高密度记录的磁记录介质，其包括非磁性基板和设置在非磁性基板上的磁性层，并且作为主要成分含有铁磁性颗粒和粘合剂，其中，非磁性基板表面与磁性层相邻的一侧的表面粗糙度高于非磁性基板的背面的表面粗糙度。与磁性层相邻的基板表面的表面粗糙度为0.007μm以上，背面的表面粗糙度为0.02μm以下，但是在各特定的应用中，与磁性层相邻的表面的粗糙度选择为较高比背面的。

6. 发明授权

US4455345A Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US4455345A
公开(公告)日：1984-06-19
申请号：US457319
申请日：1983-01-11
申请人： Hajime Miyatuka , Akira Kasuga
发明人： Hajime Miyatuka , Akira Kasuga
IPC分类号： C09D5/23 , C09D7/12 , G11B5/706 , G11B5/708 , G11B5/714 , H01F1/047 , H01F10/02
CPC分类号： G11B5/70605 , G11B5/70615 , G11B5/7085 , G11B5/714 , H04H2201/13 , Y10S428/90 , Y10T428/26 , Y10T428/31678
摘要： A magnetic recording medium is disclosed. The medium is comprised of a support having a magnetic layer coated thereon. The magnetic layer is comprised of ferromagnetic metal powder and a binder. The ferromagnetic metal powder has a specific surface area of 35 to 70 m.sup.2 /g, a saturation magnetization (.sigma..sub.s) of 120 to 160 emu/g and a metal content of 75 to 98 wt %. The magnetic recording medium has a high S/N ratio, particularly a high video S/N ratio and has stable magnetic properties.
摘要翻译：公开了一种磁记录介质。介质由其上涂覆有磁性层的载体组成。磁性层由铁磁金属粉末和粘合剂组成。铁磁性金属粉末的比表面积为35〜70m 2 / g，饱和磁化强度（sigma）为120〜160emu / g，金属含量为75〜98wt％。磁记录介质具有高S / N比，特别是高视频S / N比，并具有稳定的磁特性。

7. 发明授权

US4431712A Magnetic recording medium of ferromagnetic particles and binder 失效
标题翻译：铁磁颗粒和粘结剂的磁记录介质
公开(公告)号：US4431712A
公开(公告)日：1984-02-14
申请号：US347619
申请日：1982-02-10
申请人： Akihiro Matsufuji , Akira Kasuga , Hajime Miyatsuka , Masashi Aonuma
发明人： Akihiro Matsufuji , Akira Kasuga , Hajime Miyatsuka , Masashi Aonuma
IPC分类号： C09D5/23 , G11B5/702 , G11B5/70
CPC分类号： G11B5/7022 , Y10S428/90
摘要： A magnetic recording medium having a non-magnetic base overlaid with a magnetic layer containing ferromagnetic particles and a binder is disclosed. The ferromagnetic particles are metal particles and the binder is composed of (a) carboxyl-containing vinyl chloride/vinyl acetate copolymer, (b) a polyurethane resin and (c) a polyisocyanate compound.
摘要翻译：公开了一种具有覆盖有含有铁磁性粒子和粘合剂的磁性层的非磁性基底的磁记录介质。铁磁颗粒是金属颗粒，粘合剂由（a）含羧基的氯乙烯/乙酸乙烯酯共聚物，（b）聚氨酯树脂和（c）多异氰酸酯化合物组成。

8. 发明授权

US4407901A Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US4407901A
公开(公告)日：1983-10-04
申请号：US300823
申请日：1981-09-10
申请人： Hajime Miyatsuka , Akira Kasuga , Yasuyuki Yamada
发明人： Hajime Miyatsuka , Akira Kasuga , Yasuyuki Yamada
IPC分类号： C09D5/23 , G11B5/70 , G11B5/702 , B32B5/16
CPC分类号： G11B5/702 , Y10S428/90 , Y10T428/2998
摘要： A magnetic recording medium is disclosed comprising a non-magnetic base bearing a magnetic layer mainly consisting of ferromagnetic particles and a binder wherein the magnetic layer contains a polymer having a polar functional group and a degree of polymerization of not more than 100.
摘要翻译：公开了一种磁记录介质，其包括：非磁性基座，其承载主要由铁磁颗粒和粘合剂组成的磁性层，其中所述磁性层含有具有极性官能团和聚合度不超过100的聚合物。

9. 发明授权

US4030685A Magnetic tape magazine 失效
标题翻译：磁带杂志
公开(公告)号：US4030685A
公开(公告)日：1977-06-21
申请号：US605046
申请日：1975-08-15
申请人： Osamu Suzuki , Goro Akashi , Akira Kasuga , Kenji Sega
发明人： Osamu Suzuki , Goro Akashi , Akira Kasuga , Kenji Sega
IPC分类号： G11B23/087 , G11B23/10
CPC分类号： G11B23/087
摘要： An elastic flexible belt is tensioned around feed-out and take-up tape convolutions in a magnetic tape magazine to press the convolutions inward and tightly wind the tape on cores. By the tension of the flexible belt provided around the tape convolutions, the tape is tightly wound on the cores and stably fed in the magazine, and accordingly, the edges of the tape are effectively aligned in the convolutions.
摘要翻译：弹性柔性带在磁带盒周围的送出和卷取带卷绕周围被张紧，以将卷入内压并将带紧紧地卷绕在芯上。通过设置在带卷绕周围的柔性带的张力，带被紧密缠绕在芯上并稳定地馈送到盒中，因此，带的边缘在卷积中有效地对准。

10. 发明授权

US4784914A Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US4784914A
公开(公告)日：1988-11-15
申请号：US944114
申请日：1986-12-22
申请人： Akihiro Matsufuji , Akira Kasuga , Shigeo Komine , Yasuyuki Yamada , Hajime Miyatsuka
发明人： Akihiro Matsufuji , Akira Kasuga , Shigeo Komine , Yasuyuki Yamada , Hajime Miyatsuka
IPC分类号： C08G18/08 , C08L75/04 , C09D5/23 , C09D127/04 , C09D127/06 , C09D175/00 , C09D175/04 , G11B5/702
CPC分类号： G11B5/7022 , C08G18/0819 , C08L75/04 , Y10S428/90 , Y10T428/256 , Y10T428/257 , Y10T428/31529 , Y10T428/31609 , Y10T428/31935
摘要： A magnetic recording medium comprising a nonmagnetic support and a magnetic recording layer provided on the support, said magnetic recording layer comprising a binder and a ferromagnetic powder dispersed therein, which is characterized in that said binder is composed of a resin component comprising:a vinyl chloride copolymer containing a repeating unit having at least one polar group selected from the group consisting of --SO.sub.3 M, --OSO.sub.3 M, --COOM and --PO(OM').sub.2, wherein M is hydrogen or an alkali metal atom, and M' is any one of hydrogen, an alkali metal atom and a lower hydrocarbon group, and a repeating unit having an epoxy group; anda polyurethane resin containing a repeating unit having at least one polar group selected from the group consisting of --SO.sub.3 M, --OSO.sub.3 M, --COOM and --PO(OM').sub.2, wherein M and M' have the same meanings as defined above.
摘要翻译：一种磁记录介质，包括设置在所述载体上的非磁性载体和磁记录层，所述磁记录层包含粘合剂和分散在其中的铁磁性粉末，其特征在于，所述粘合剂由树脂组分构成，所述树脂组分包括：氯乙烯含有具有至少一个选自-SO 3 M，-OSO 3 M，-COOM和-PO（OM'）2的极性基团的重复单元的共聚物，其中M是氢或碱金属原子，M'是任何一个的氢，碱金属原子和低级烃基，以及具有环氧基的重复单元; 和含有至少一个选自-SO 3 M，-OSO 3 M，-COOM和-PO（OM'）2的极性基团的重复单元的聚氨酯树脂，其中M和M'具有与上述相同的含义。

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