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公开(公告)号：US4135031A
公开(公告)日：1979-01-16
申请号：US771547
申请日：1977-02-24
申请人： Goro Akashi , Masaaki Fujiyama , Masahiro Utumi
发明人： Goro Akashi , Masaaki Fujiyama , Masahiro Utumi
CPC分类号： G11B5/735 , G11B5/708 , Y10S428/90 , Y10T428/2462 , Y10T428/25 , Y10T428/259 , Y10T428/31
摘要： In a magnetic recording substance comprising a magnetic recording layer on one side of a non-magnetic support and a back layer on the other side thereof, the back layer is provided by coating a powdered solid with a binder and coating solvent and having spike grains with a height of 0.8 to 5 microns and an interval or pitch of at least 200 microns on the surface thereof and a friction coefficient of at least 0.25.
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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：US4275108A
公开(公告)日：1981-06-23
申请号：US82905
申请日：1979-10-09
CPC分类号： G11B23/26 , Y10T428/25 , Y10T428/257 , Y10T428/258 , Y10T428/259 , Y10T428/269 , Y10T428/31507 , Y10T428/31511 , Y10T428/31554 , Y10T428/31565 , Y10T428/31576 , Y10T428/3158 , Y10T428/31583 , Y10T428/31591 , Y10T428/31594 , Y10T428/31598 , Y10T428/31605 , Y10T428/31609 , Y10T428/31681 , Y10T428/31699 , Y10T428/31877 , Y10T428/31884 , Y10T428/31935
摘要： The present invention relates to a leader or trailer tape for a magnetic tape, which comprises a plastic support member and, on one side thereof, a laminated coating consisting of at least (1) an electrically conductive layer as a first layer and (2) a layer containing mainly a pigment and a binder as a second layer.
摘要翻译： 本发明涉及一种用于磁带的领带或拖车带，其包括塑料支撑构件，并且在其一侧上具有由至少（1）作为第一层的导电层和（2）的导电层组成的层压涂层， 主要包含颜料和粘合剂作为第二层的层。
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公开(公告)号：US4146031A
公开(公告)日：1979-03-27
申请号：US816183
申请日：1977-07-15
申请人： Masaaki Fujiyama , Masahiro Utumi
发明人： Masaaki Fujiyama , Masahiro Utumi
CPC分类号： G11B5/725 , G11B23/26 , G11B5/627 , Y10T428/252 , Y10T428/256 , Y10T428/257 , Y10T428/258 , Y10T428/259 , Y10T428/265 , Y10T428/266 , Y10T428/269 , Y10T428/27 , Y10T428/31507 , Y10T428/31544 , Y10T428/31663 , Y10T428/31786 , Y10T428/31844 , Y10T428/31848 , Y10T428/31855 , Y10T428/31971
摘要： This invention relates to a leader or trailer for a magnetic tape, which comprises a plastic support member, a coated layer consisting essentially of a pigment and binder on the surface of the plastic support and a lubricant layer on the back side of the plastic support, the pigment consisting of a mixture of at least two solid powders each having a mean grain size of (A) 0.002 to 3 microns and (B) 5 to 35 microns and the lubricant layer being coated in a proportion of at least 0.1 mg/m.sup.2.
摘要翻译： 本发明涉及一种用于磁带的前导件或拖车，其包括塑料支撑构件，基本上由塑料支撑件表面上的颜料和粘合剂组成的涂层以及在塑料支撑体的背面上的润滑剂层， 所述颜料由至少两种固体粉末的混合物组成，每种固体粉末的平均粒度为（A）0.002至3微米，（B）为5至35微米，润滑剂层以至少0.1mg / m 2的比例涂覆 。
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公开(公告)号：US4617226A
公开(公告)日：1986-10-14
申请号：US642911
申请日：1984-08-21
IPC分类号： C09D169/00 , C09D167/02 , G11B5/73 , G11B5/738 , G11B5/72
CPC分类号： G11B5/738 , Y10S428/90 , Y10T428/24975 , Y10T428/25 , Y10T428/265 , Y10T428/30 , Y10T428/31504
摘要： A novel magnetic recording medium comprising a non-magnetic support, a magnetic recording layer, and an intermediate layer containing an electroconductive polymer. An optional second intermediate layer contains carbon black and is provided on either surface of the first intermediate layer. The magnetic recording medium has low surface electric resistance, and when used as a video tape, has both a high video S/N ratio and improved stability of video S/N with the passage of time.
摘要翻译： 一种包含非磁性载体，磁记录层和含有导电聚合物的中间层的新型磁记录介质。 可选的第二中间层包含炭黑并且设置在第一中间层的任一表面上。 磁记录介质具有低表面电阻，并且当用作录像带时，随着时间的推移具有高视频S / N比和视频S / N的改进的稳定性。
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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：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：US4138229A
公开(公告)日：1979-02-06
申请号：US844027
申请日：1977-10-20
摘要： A cleaning tape used for cleaning the surface of a magnetic recording head of a tape recorder or the like consists of a substrate and a cleaning layer. The cleaning layer contains two kinds of particles. One kind of particles has a small diameter and a high hardness, and the other has a large diameter and a low hardness.
摘要翻译： 用于清洁磁带记录器等的磁记录头的表面的清洁带由基板和清洁层组成。 清洁层含有两种颗粒。 一种颗粒具有小直径和高硬度，另一种具有大直径和低硬度。
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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：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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