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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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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：US4745017A
公开(公告)日：1988-05-17
申请号：US616761
申请日：1984-06-04
IPC分类号： C10M103/02 , C09D101/18 , C09D175/04 , C10M171/00 , C10N40/18 , G11B5/73 , G11B5/735 , G11B5/70
CPC分类号： G11B5/735 , Y10S428/90 , Y10T428/24355 , Y10T428/25 , Y10T428/265 , 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 is disclosed. The backing layer contains carbon black and a binder and has a thickness of 2 .mu.m or less. The carbon black is composed of fine-grained carbon black having a mean grain size of 10 to 30 m.mu. and coarse-grained carbon black having a mean grain size of 100 to 150 m.mu.. In the backing layer the ratio of the content of carbon black to the binder ranges from 1:0.5 to 1:3.5 by weight.
摘要翻译： 公开了一种磁记录介质，其包括在其表面侧具有磁记录层并且在其相对侧上具有背衬层的非磁性支撑。 背衬层含有炭黑和粘合剂，其厚度为2μm以下。 炭黑由平均粒径为10〜30μm的细粒炭黑和平均粒径为100〜150μm的粗粒炭黑构成。 在背衬层中，炭黑与粘合剂的含量的比例为1:0.5至1:3.5（重量比）。
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公开(公告)号：US4598014A
公开(公告)日：1986-07-01
申请号：US672322
申请日：1984-11-16
申请人： Takahito Miyoshi , Kenichi Masuyama , Toshimitu Okutu , Masahiro Utumi , Masaaki Fujiyama , Minoru Kanazawa
发明人： Takahito Miyoshi , Kenichi Masuyama , Toshimitu Okutu , Masahiro Utumi , Masaaki Fujiyama , Minoru Kanazawa
IPC分类号： C10M103/02 , C09D5/23 , C09D101/18 , C09D175/00 , C09D175/04 , C10N20/06 , C10N40/18 , G11B5/64 , 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 is disclosed. The medium comprises a non-magnetic support having provided on opposite surfaces a magnetic recording layer and a backing layer containing two types of carbon black and a binder and having a thickness of 2 .mu.m or less, one of said carbon black being fine carbon black having an average particle size of 30 to 100 m.mu. and the other of said carbon black being coarse carbon black having an average particle size of 150 to 500 m.mu., and the mixing weight ratio of said carbon black and the binder being 1:1.5 to 1:3.5.
摘要翻译： 公开了一种磁记录介质。 介质包括非磁性支撑体，其在相对表面上设置有磁记录层和含有两种类型的炭黑和粘合剂并具有2μm或更小的厚度的背衬层，所述炭黑中的一种是细的炭黑 平均粒径为30〜100μm，所述炭黑为平均粒径为150〜500μm的粗炭黑，所述炭黑和粘合剂的混合重量比为1:1.5 至1：3.5。
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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：US4567063A
公开(公告)日：1986-01-28
申请号：US727216
申请日：1985-04-25
CPC分类号： G11B5/84
摘要： A process for the production of magnetic recording media including a nonmagnetic support having a magnetic layer on one side thereof, and a backing layer obtained by dispersing a filler in a binder on the other side thereof, in which said backing layer is provided by:a first step of kneading and dispersing a filler and a binder by means of a roll mill to form chips,a second step of dissolving said chips in a solvent followed by dispersion effected with a sand grinder, anda third step of adding a curing agent to the obtained liquid dispersion, followed by coating.
摘要翻译： 一种制造磁记录介质的方法，所述磁记录介质包括在其一侧上具有磁性层的非磁性载体，以及通过将填料分散在另一侧的粘合剂中而获得的背衬层，其中所述背衬层由以下部分提供： 通过辊磨机捏合和分散填料和粘合剂以形成碎片的第一步骤，将所述碎屑溶解在溶剂中随后用砂磨机分散进行的第二步骤，以及将固化剂加入到 得到的液体分散体，然后进行涂布。
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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：US4678697A
公开(公告)日：1987-07-07
申请号：US702550
申请日：1985-02-19
IPC分类号： G11B5/70 , C09D5/23 , C09D127/04 , C09D127/06 , C09D175/00 , C09D175/04 , G11B5/64 , G11B5/66 , G11B5/73 , G11B5/735 , G11B5/68
CPC分类号： G11B5/735 , Y10S428/90 , Y10T428/24355 , Y10T428/25 , Y10T428/256 , Y10T428/26
摘要： A magnetic recording medium is described, comprising a non-magnetic support having coated thereon on opposite surfaces a magnetic layer containing a magnetic substance and a binder-containing backing layer, wherein the magnetic layer has a light transmittance of 2% or more for light having a wavelength of 900 nm, the backing layer has a transmittance of from 1 to 10% for light having a wavelength of 900 nm, the magnetic recording medium as a whole has a transmittance of 1% or less for light having a wavelength of 900 nm, and the backing layer has a center line average roughness (Ra) of 0.05 .mu.m or less at a cut-off value of 0.08 mm.
摘要翻译： 描述了一种磁记录介质，其包括在相对表面上涂覆有含有磁性物质和含粘合剂的背衬层的磁性层的非磁性载体，其中，对于具有磁性物质的光具有2％以上的透光率， 对于波长900nm的光，背衬层对于波长为900nm的光具有1〜10％的透射率，对于波长900nm的光，磁记录介质整体的透射率为1％以下 ，背衬层的切断值为0.08mm时的中心线平均粗糙度（Ra）为0.05μm以下。
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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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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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