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公开(公告)号：US4539257A
公开(公告)日：1985-09-03
申请号：US599917
申请日：1984-04-13
CPC分类号： G11B5/708 , Y10S428/90 , Y10T428/25 , Y10T428/265
摘要： A magnetic recording medium comprised of a nonmagnetic support base having a magnetic layer provided thereon is disclosed. The magnetic layer includes ferromagnetic particles dispersed in a binder in combination with carbon black particles. The carbon black particles have an average primary particle size in the range of 30 m.mu. to 50 m.mu.. Further, the carbon black is capable of the adsorption of 120 ml or more of dibutyl phthalate per 100 g of carbon black. By utilizing the particular carbon black of the present invention it is possible to obtain a magnetic recording medium having improved running properties.
摘要翻译： 公开了一种由其上设置有磁性层的非磁性支撑基体构成的磁记录介质。 磁性层包括分散在粘合剂中的炭黑颗粒与炭黑颗粒的组合。 炭黑粒子的平均一次粒径在30μm〜50μm的范围内。 此外，炭黑能够每100g炭黑吸附120ml或更多的邻苯二甲酸二丁酯。 通过利用本发明的特定炭黑，可以获得具有改善的运行特性的磁记录介质。
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公开(公告)号：US4647501A
公开(公告)日：1987-03-03
申请号：US815271
申请日：1985-12-24
申请人： Nobutaka Yamaguchi , Shinobu Iida , Norio Nasu , Katsumi Ryoke , Toshimitu Okutu , Kenichi Masuyama
发明人： Nobutaka Yamaguchi , Shinobu Iida , Norio Nasu , Katsumi Ryoke , Toshimitu Okutu , Kenichi Masuyama
IPC分类号： C09D175/04 , C09D101/18 , C09D127/08 , G11B5/73 , G11B5/735 , G11B5/70 , G11B5/72
CPC分类号： G11B5/735 , Y10S428/90 , Y10T428/25 , Y10T428/31565 , Y10T428/3158 , Y10T428/31609
摘要： A magnetic recording material, which comprises a non-magnetic support having provided on one side thereof a magnetic layer and on the other side thereof a backing layer is disclosed. The binder of the backing layer is comprised of a combination of a cellulose resin, a vinylidene chloride resin, a polyurethane resin and a polyisocyanate. Use of the backing layer increases the durability of the tape and aids in preventing drop out.
摘要翻译： 公开了一种磁记录材料，其包括在其一侧上设置有磁性层的非磁性支撑体，其另一侧具有背衬层。 背衬层的粘合剂由纤维素树脂，偏二氯乙烯树脂，聚氨酯树脂和多异氰酸酯的组合构成。 背衬层的使用增加了胶带的耐久性，有助于防止脱落。
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公开(公告)号：US4663217A
公开(公告)日：1987-05-05
申请号：US767240
申请日：1985-08-19
IPC分类号： C09D101/18 , C09D175/04 , G11B5/73 , G11B5/735 , B32B5/16
CPC分类号： G11B5/735 , Y10T428/24942 , Y10T428/25 , Y10T428/31551 , Y10T428/31725
摘要： A magnetic recording medium comprised of a nonmagnetic support base having a magnetic recording layer on one surface thereof and a backing layer on the other surface thereof is disclosed. The backing layer is comprised of (1) carbon black having a particle size in the range of 10 to 150 m.mu., (2) graphite having a particle size of 3.mu. or less, and (3) a curing agent. By utilizing this particular backing layer the resulting recording medium has improved durability with respect to the backing layer and shows a decreased in the number of dropouts and scratches during use.
摘要翻译： 公开了一种磁记录介质，其包括在其一个表面上具有磁记录层的非磁性支撑基底和在另一表面上的背衬层。 背衬层由（1）粒径为10〜150μm的碳黑，（2）粒径为3μm以下的石墨，（3）固化剂构成。 通过利用这种特定的背衬层，所得到的记录介质相对于背衬层具有改进的耐久性，并且在使用期间显示掉落数量和划痕数量减少。
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公开(公告)号：US4579778A
公开(公告)日：1986-04-01
申请号：US603851
申请日：1984-04-25
CPC分类号： G11B5/71 , G11B5/735 , Y10S428/90 , Y10T428/265 , Y10T428/31678 , Y10T428/31786
摘要： A magnetic recording medium is disclosed which comprises a non-magnetic support, having a Young's modulus of 7.times.10.sup.10 to 1.times.10.sup.13 dyn/cm.sup.2, having coated on opposite surfaces, a magnetic recording layer comprising ferromagnetic particles and a fatty acid ester and a backing layer comprising a cellulose resin.
摘要翻译： 公开了一种磁记录介质，其包括具有7×10 10至1×10 3 dyn / cm 2的杨氏模量的非磁性载体，其涂覆在相对表面上，包含铁磁颗粒和脂肪酸酯的磁记录层和包含 纤维素树脂。
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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：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：US4420532A
公开(公告)日：1983-12-13
申请号：US364181
申请日：1982-03-31
申请人： Nobutaka Yamaguchi , Masaaki Fujiyama , Norio Nasu
发明人： Nobutaka Yamaguchi , Masaaki Fujiyama , Norio Nasu
CPC分类号： G11B5/7085 , G11B5/71 , Y10S428/90 , Y10T428/25 , Y10T428/256 , Y10T428/257 , Y10T428/259
摘要： In a magnetic recording medium comprising a magnetic recording layer on the surface of a non-magnetic support member, a ferromagnetic powder, an abrasive having a Mohs' hardness of at least 6, colloidal silica and a fatty acid and fatty acid ester are incorporated in the magnetic layer, thus improving the durability of the magnetic layer and decreasing the head abrasion.
摘要翻译： 在非磁性支撑体表面上含有磁记录层的磁记录介质中，将铁磁性粉末，莫氏硬度至少为6的磨料，胶体二氧化硅和脂肪酸脂肪酸酯加入 磁性层，从而提高磁性层的耐久性并降低磁头磨损。
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公开(公告)号：US5425708A
公开(公告)日：1995-06-20
申请号：US989137
申请日：1992-12-11
申请人： Norio Nasu
发明人： Norio Nasu
CPC分类号： A61M29/02 , A61M25/04 , A61M2025/1052 , A61M2210/127
摘要： A catheter with an aorta-occluding balloon comprises a tube 1 extending between its L-shaped distal end 8 and its proximal end 9, and having a main lumen 2 formed centrally of the tube, a first and second subordinate lumens 3 and 4, both of them extending longitudinally through the tube's periphery, and a balloon 5 secured to and around the tube's distal end 8. The first lumen 3 has at its end near the proximal end 9 a connector 6 for receiving a balloon-expanding means, and the second lumen 4 also has at its end near the proximal end 9 a further connector 7 for receiving a solution-feeding means. The catheter is thus designed to occlude a calcified blood vessel so that its intima may not be injured, and a fluid such as a protective solution can be supplied to the cardiac muscle through the coronary artery.
摘要翻译： 具有主动脉闭塞气囊的导管包括在其L形远端8和其近端9之间延伸的管1，并且具有形成在管中心的主腔2，第一和第二从属管腔3和4 它们纵向地延伸穿过管的周边，以及气囊5，其固定到管的远端8上并围绕其的远端8.第一管腔3在其近端靠近近端9具有用于接收球囊扩张装置的连接器6， 内腔4在其近端9处还具有用于接收溶液供给装置的另外的连接器7。 因此，导管设计成阻塞钙化的血管，使得其内膜不会受伤，并且可以通过冠状动脉向心肌供应诸如保护溶液的流体。
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公开(公告)号：US4444842A
公开(公告)日：1984-04-24
申请号：US358564
申请日：1982-03-16
CPC分类号： G11B5/73 , G11B5/725 , Y10S428/90 , Y10T428/27 , Y10T428/31663
摘要： A magnetic recording medium is disclosed which is comprised of a non-magnetic support base having a magnetic layer on one surface and a silicone oil layer formed on the opposite surface. The silicone oil layer does not produce dropouts and eliminates scraping and therefore eliminates dust particles that collect and build up in the area of the magnetic head. The silicone layer is formed from a silicone-containing compound having a viscosity of at least 6,000 centistokes at 25.degree. C.
摘要翻译： 公开了一种磁记录介质，其包括在一个表面上具有磁性层的非磁性支撑基底和在相对表面上形成的硅油层。 硅油层不会产生脱落并消除刮擦，因此消除了在磁头区域收集和积聚的灰尘颗粒。 硅氧烷层由25℃粘度至少为6,000厘沲的含硅酮化合物形成。
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公开(公告)号：US4425400A
公开(公告)日：1984-01-10
申请号：US364029
申请日：1982-03-31
申请人： Nobutaka Yamaguchi , Masaaki Fujiyana , Nobuo Tsuji , Norio Nasu
发明人： Nobutaka Yamaguchi , Masaaki Fujiyana , Nobuo Tsuji , Norio Nasu
CPC分类号： G11B5/7085 , Y10S428/90 , Y10T428/257 , Y10T428/31663 , Y10T428/31678
摘要： In a magnetic recording medium comprising a magnetic recording layer on the surface of a non-magnetic support member, an abrasive having a Mohs' hardness of at least 6 and needle-shaped .alpha.-Fe.sub.2 O.sub.3 are incorporated in the magnetic layer, thus improving the coating durability and decreasing the head abrasion, jitter and noise.
摘要翻译： 在非磁性支撑体表面含磁记录层的磁记录介质中，具有莫氏硬度至少为6的磨粒和针状α-Fe2O3的磁记录介质结合在磁性层中，从而改善涂层 耐用性和降低头部磨损，抖动和噪音。
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