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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
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。
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公开(公告)号：US4569856A
公开(公告)日：1986-02-11
申请号：US709859
申请日：1985-03-08
申请人： Takahito Miyoshi , Kenichi Masuyama , Shin-ichiro Dezawa , Toshimitu Okutu , Norio Nasu , Nobuo Aoki , Masaaki Fujiyama
发明人： Takahito Miyoshi , Kenichi Masuyama , Shin-ichiro Dezawa , Toshimitu Okutu , Norio Nasu , Nobuo Aoki , Masaaki Fujiyama
CPC分类号： G11B5/70 , G11B5/706 , G11B5/714 , Y10S428/90
摘要： A method for preparing a magnetic recording medium is described, comprising (1) pre-dispersing ferromagnetic particles having an S.sub.BET specific surface area of 35 m.sup.2 /g or more and having an adjusted water content of 0.8 wt % or more with a binder, (2) adding an additional binder and a lubricating agent thereinto, mixing and dispersing them to prepare a diserpsion of a magnetic coating composition, and (3) coating the resulting dispersion of a magnetic coating composition on a non-magnetic support.
摘要翻译： 描述了制备磁记录介质的方法，其包括：（1）用粘合剂将SBET比表面积为35m 2 / g以上并具有0.8重量％以上调节水含量的铁磁粒子预分散， 2）向其中加入附加的粘合剂和润滑剂，混合并分散它们以制备磁性涂料组合物的分解，和（3）将得到的磁性涂料组合物的分散体涂布在非磁性载体上。
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公开(公告)号：US4670333A
公开(公告)日：1987-06-02
申请号：US727214
申请日：1985-04-25
IPC分类号： C09D175/04 , C09D101/18 , G11B5/73 , G11B5/735 , G11B5/72
CPC分类号： G11B5/735 , Y10S428/90 , Y10T428/25 , Y10T428/256 , Y10T428/257 , Y10T428/265 , Y10T428/2991
摘要： A magnetic recording medium including a nonmagnetic support having a magnetic layer on one side thereof and a backing layer on the opposite side thereof, said backing layer comprising a fatty acid having 12 or more carbon atoms and copper or copper ions. Fatty acid is saturated or unsaturated, and copper is 0.2 micron or less in size.
摘要翻译： 一种磁记录介质，包括在其一侧上具有磁性层的非磁性载体和在其相对侧上的背衬层，所述背衬层包含具有12个或更多个碳原子的脂肪酸和铜或铜离子。 脂肪酸是饱和或不饱和的，铜的尺寸为0.2微米或更小。
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公开(公告)号：US4582757A
公开(公告)日：1986-04-15
申请号：US638935
申请日：1984-08-09
IPC分类号： C10M103/02 , C09D101/18 , C09D175/04 , C10M171/00 , C10N40/18 , G11B5/73 , G11B5/735 , G11B5/72
CPC分类号： G11B5/735 , Y10S428/90 , Y10T428/25 , Y10T428/257 , Y10T428/258 , Y10T428/30
摘要： A magnetic recording medium which comprises a non-magnetic support having on the surface side thereof a magnetic recording layer and on the opposite side thereof a backing layer having a thickness of 2 .mu.m or less, which contains carbon black and a binder and optionally, an inorganic powder, in which the backing layer contains at least two kinds of carbon black, one being fine-grained carbon black having a mean grain size of 10 to 30 m.mu. and the other being coarse-grained carbon black having a mean grain size of 150 to 500 m.mu. such that the weight ratio (P/B) of the total amount of carbon black and inorganic powder (P) to binder (B) is from about 1/0.5 to 1/3.5. The recording medium described provided smooth and stable tape-running for an extended period and a high S/N ratio.
摘要翻译： 一种磁记录介质，其特征在于，具有非磁性载体，所述非磁性载体的表面侧具有磁记录层，并且在其相对侧上具有厚度为2μm或更小的背衬层，所述背衬层含有炭黑和粘合剂， 无机粉末，其中背衬层含有至少两种炭黑，一种是平均粒径为10至30μm的细粒炭黑，另一种是具有平均粒径的粗粒炭黑 为150〜500μm，炭黑和无机粉末（P）的总量与粘合剂（B）的重量比（P / B）为约1 / 0.5〜1 / 3.5。 所描述的记录介质延长了一段时间并且具有高S / N比的平稳和稳定的磁带运行。
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公开(公告)号：US4487802A
公开(公告)日：1984-12-11
申请号：US459089
申请日：1983-01-19
CPC分类号： G11B5/735 , Y10S428/90 , Y10T428/265 , Y10T428/31797 , Y10T428/31931 , Y10T428/31938
摘要： A magnetic recording medium is disclosed. The medium is comprised of a non-magnetic flexible support having a subbing layer coated thereon with a magnetic layer coated on the subbing layer. The subbing layer is comprised of a copolymer of a diolefin and a vinyl monomer. The subbing layer provides excellent adhesiveness between the support and the magnetic layer and can be produced without the use of organic solvents. Accordingly, the subbing layer can be economically produced without environmental pollution.
摘要翻译： 公开了一种磁记录介质。 所述介质由非磁性柔性支撑体组成，其上涂覆有涂层在所述底层上的磁性层的底层。 底层由二烯烃和乙烯基单体的共聚物组成。 底层在支撑体和磁性层之间提供优异的粘合性，并且可以在不使用有机溶剂的情况下制造。 因此，可以经济地制造底层而没有环境污染。
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6.发明授权Magnetic recording medium having a subbing layer of amorphous saturated polyesters 失效具有无定形饱和聚酯底层的磁记录介质
公开(公告)号：US4504542A
公开(公告)日：1985-03-12
申请号：US515737
申请日：1983-07-21
IPC分类号： C09D167/00 , G11B5/73 , G11B5/738 , B32B7/02 , B32B27/06
CPC分类号： G11B5/738 , Y10T428/265 , Y10T428/31565 , Y10T428/31786 , Y10T428/31797
摘要： A magnetic recording medium is disclosed. The medium is comprised of a support base having position thereon a subbing layer and a magnetic layer. The subbing layer is comprised of an amorphous saturated polyester having a glass transition temperature of 10.degree. C. to 60.degree. C. The recording medium provided has excellent adhesiveness between the magnetic layer and the support due to the presence of the subbing layer. Furthermore, the resulting magnetic recording medium provides excellent electromagnetic characteristics such as a desirable video S/N ratio.
摘要翻译： 公开了一种磁记录介质。 所述介质包括其上具有底层和磁性层的位置的支撑基底。 底层由玻璃化转变温度为10℃至60℃的无定形饱和聚酯组成。由于存在着底层，所提供的记录介质具有优异的磁性层与载体之间的粘附性。 此外，所得到的磁记录介质提供了优异的电磁特性，例如期望的视频S / N比。
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公开(公告)号：US4367261A
公开(公告)日：1983-01-04
申请号：US224237
申请日：1981-01-12
CPC分类号： G11B5/7085 , G11B5/735 , Y10S428/90 , Y10T428/258 , Y10T428/265 , Y10T428/31609 , Y10T428/31971
摘要： A magnetic recording medium having a magnetic layer and a backing layer on opposite sides of a support is disclosed. The backing layer comprises an inorganic filler dispersed in a binder wherein the binder comprises one or more cellulosic resins, one or more thermoplastic polyurethane elastomers and one or more polyisocyanates.
摘要翻译： 公开了一种在支撑体的相对侧上具有磁性层和背衬层的磁记录介质。 背衬层包含分散在粘合剂中的无机填料，其中粘合剂包含一种或多种纤维素树脂，一种或多种热塑性聚氨酯弹性体和一种或多种多异氰酸酯。
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公开(公告)号：US4650720A
公开(公告)日：1987-03-17
申请号：US599116
申请日：1984-04-11
申请人： Nobutaka Yamaguchi , Takahito Miyoshi , Toshimitu Okutu , Noburo Hibino , Eiichi Tadokoro , Masaaki Fujiyama
发明人： Nobutaka Yamaguchi , Takahito Miyoshi , Toshimitu Okutu , Noburo Hibino , Eiichi Tadokoro , Masaaki Fujiyama
IPC分类号： G11B5/78 , C09D5/23 , C09D7/12 , C10M105/22 , C10N40/18 , G11B5/706 , G11B5/71 , G11B5/73 , G11B5/735 , G11B5/62
CPC分类号： G11B5/735 , G11B5/71 , Y10S428/90 , Y10T428/31786
摘要： A magnetic recording medium is disclosed which comprises a non-magnetic support having provided thereon a magnetic recording layer and a backing layer on the opposite surface thereof, wherein said magnetic recording layer contains a fatty acid, said backing layer contains a cellulose resin, and said non-magnetic support has a Young's modulus of 7.times.10.sup.10 to 1.times.10.sup.13 dyn/cm.sup.2.
摘要翻译： 公开了一种磁记录介质，其包括在其相对表面上设置有磁记录层和背衬层的非磁性载体，其中所述磁记录层含有脂肪酸，所述背层含有纤维素树脂，并且所述 非磁性载体的杨氏模量为7×10 10〜1×10 13 dyn / cm 2。
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公开(公告)号：US4612235A
公开(公告)日：1986-09-16
申请号：US715757
申请日：1985-03-25
IPC分类号： C09D101/18 , C09D175/04 , G11B5/72 , G11B5/73 , G11B5/735
CPC分类号： G11B5/735 , G11B5/72 , Y10S428/90 , Y10T428/24975 , Y10T428/25 , Y10T428/256 , Y10T428/257 , Y10T428/258 , Y10T428/259
摘要： This invention relates to a magnetic recording medium whose coefficient of friction is lowered without lowering S/N and which has an improved running property, which comprises a magnetic recording layer on one side of a nonmagnetic support and a back layer containing an inorganic powder and a binder and having a thickness of at most 2.mu., on the other side thereof, characterized in that the surface of the back layer is provided with surface projections with a height of 0.05 to 0.8.mu., an interval of at least 50.mu. and 50 to 50,000 projections/cm.sup.2.
摘要翻译： 本发明涉及一种磁记录介质，其摩擦系数降低而不降低S / N，并且具有改善的运行性能，其包括在非磁性载体的一侧上的磁记录层和含有无机粉末和 粘合剂，其厚度至多为2μm，其特征在于，背层的表面设置有高度为0.05至0.8μm的表面突起，间隔至少为50μm至50至 50,000个投影/ cm2。
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公开(公告)号：US4567057A
公开(公告)日：1986-01-28
申请号：US654549
申请日：1984-09-26
申请人： Kenichi Masuyama , Toshimitu Okutu , Takahito Miyoshi , Hiroshi Ogawa , Masahiro Utumi , Masaaki Fujiyama , Sugihiko Tada
发明人： Kenichi Masuyama , Toshimitu Okutu , Takahito Miyoshi , Hiroshi Ogawa , Masahiro Utumi , Masaaki Fujiyama , Sugihiko Tada
CPC分类号： G11B5/845
摘要： A magnetic coating composition comprising a binder dissolved in a solvent and magnetic grains dispersed therein is applied onto a surface of a non-magnetic substrate continuously moved. The coating film thus overlaid on the non-magnetic substrate is subjected to a preliminary orientation step for orientating the magnetic grains in the coating film, and then to a preliminary drying step. A final orientation step is then conducted while intermediate drying is carried out. Thereafter, final drying is effected.
摘要翻译： 将包含溶解在溶剂中的粘合剂和分散在其中的磁性颗粒的磁性涂料组合物施加到连续移动的非磁性基材的表面上。 由此覆盖在非磁性基板上的涂膜进行用于使涂覆膜中的磁性颗粒定向的初步取向步骤，然后进行预干燥步骤。 然后在进行中间干燥的同时进行最终取向步骤。 此后，进行最终干燥。
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