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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：US4551386A
公开(公告)日：1985-11-05
申请号：US596776
申请日：1984-04-04
申请人： Nobutaka Yamaguchi , Shinobu Iida , Masahiro Utsumi , Toshimitu Okutu , Kenichi Masuyama , Eiichi Tadokoro
发明人： Nobutaka Yamaguchi , Shinobu Iida , Masahiro Utsumi , Toshimitu Okutu , Kenichi Masuyama , Eiichi Tadokoro
CPC分类号： G11B5/735 , Y10S428/90 , Y10T428/25 , Y10T428/265 , Y10T428/30
摘要： A magnetic recording material comprised of a non-magnetic support base having provided thereon a magnetic recording layer on one side and the back layer on the other side is disclosed. The magnetic recording layer is comprised of ferromagnetic particles dispersed in a binder in combination with carbon black particles having an average primary particle size of 30 .mu.m or less. The back layer is comprised of a binder having dispersed therein carbon black having an average primary particle size in the range of 50 to 150 m.mu.. The magnetic recording material has improved electromagnetic properties and improved durability, particularly with respect to video S/N and dropout.
摘要翻译： 公开了一种磁记录材料，其包括在一侧上设置有磁记录层的非磁性支撑基底和另一侧上的背层。 磁记录层由分散在粘合剂中的铁磁颗粒与平均一次粒径为30μm以下的炭黑颗粒组合而成。 背层由其中分散有平均一次粒径在50-150μm的碳黑的粘合剂组成。 磁记录材料具有改进的电磁特性和改善的耐久性，特别是在视频S / N和压差方面。
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公开(公告)号：US4544601A
公开(公告)日：1985-10-01
申请号：US586919
申请日：1984-03-07
申请人： Nobutaka Yamaguchi , Shinobu Iida , Toshimitu Okutu , Takahito Miyoshi , Eiichi Tadokoro , Masaaki Fujiyama
发明人： Nobutaka Yamaguchi , Shinobu Iida , Toshimitu Okutu , Takahito Miyoshi , Eiichi Tadokoro , Masaaki Fujiyama
IPC分类号： G11B5/702 , C09D127/06 , C09D175/04 , G11B5/73 , G11B5/735 , G11B5/72
CPC分类号： G11B5/7305 , Y10S428/90 , Y10T428/25 , Y10T428/258 , Y10T428/265 , Y10T428/2991 , Y10T428/2998 , Y10T428/30
摘要： A magnetic recording medium is disclosed. The medium is comprised of a non-magnetic support having coated thereon a magnetic recording layer and a backing layer on the surface opposite the magnetic recording layer. The backing layer contains carbon black and the surface treated calcium carbonate dispersed in a binder. The calcium carbonate is surface treated so as to make the particles hydrophobic. Including the carbon black and the calcium carbonate in the backing layer provides a recording medium with improved durability and a reduced amount of drop out.
摘要翻译： 公开了一种磁记录介质。 介质由在其上涂覆有磁记录层的非磁性载体和与磁记录层相对的表面上的背衬层组成。 背衬层含有炭黑，分散在粘合剂中的表面处理过的碳酸钙。 碳酸钙进行表面处理，使颗粒疏水。 在背衬层中包括炭黑和碳酸钙提供了具有改善的耐久性和减少的脱落量的记录介质。
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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：US4626469A
公开(公告)日：1986-12-02
申请号：US505505
申请日：1983-06-17
CPC分类号： G11B5/708 , Y10S428/90 , Y10T428/25
摘要： A magnetic recording material, which comprises a magnetic layer coated on a non-magnetic support is disclosed. The magnetic layer contains both carbon black fine powder having a mean primary grain size of less than 10 m.mu. and carbon black coarse powder having a mean primary grain size in the range of 50 to 120 m.mu. in a mixing ratio ranging from 95/5 to 5/95. The material is improved in both RF output and audio output.
摘要翻译： 公开了一种磁记录材料，其包括涂覆在非磁性载体上的磁性层。 磁性层含有平均一次粒径小于10μm的炭黑细粉末和平均一次粒径在50〜120μm的范围内的混合比例为95/5的碳黑粗粉末 至5/95。 该材料在射频输出和音频输出两方面得到改进。
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公开(公告)号：US4582754A
公开(公告)日：1986-04-15
申请号：US634841
申请日：1984-07-26
申请人： Katsumi Ryoke , Shinobu Iida , Masaaki Fujiyama , Eiichi Tadokoro
发明人： Katsumi Ryoke , Shinobu Iida , Masaaki Fujiyama , Eiichi Tadokoro
IPC分类号： C09D5/23 , C09D127/04 , C09D127/06 , G11B5/702 , G11B5/706 , G11B5/708 , G11B5/70
CPC分类号： G11B5/7023 , G11B5/70673 , G11B5/708 , Y10S428/90 , Y10T428/25 , Y10T428/256 , Y10T428/257 , Y10T428/31935
摘要： A magnetic recording medium comprising a support having provided thereon a magnetic recording layer containing (1) a cobalt-containing iron oxide, (2) graphite, and (3) a copolymer of vinyl chloride, vinyl acetate and maleic acid.
摘要翻译： 一种磁记录介质，包括其上设置有含有（1）含钴氧化铁，（2）石墨和（3）氯乙烯，乙酸乙烯酯和马来酸的共聚物的磁记录层的载体。
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公开(公告)号：US4552799A
公开(公告)日：1985-11-12
申请号：US602985
申请日：1984-04-23
申请人： Katsumi Ryoke , Shinobu Iida , Masaaki Fujiyama , Eiichi Tadokoro
发明人： Katsumi Ryoke , Shinobu Iida , Masaaki Fujiyama , Eiichi Tadokoro
CPC分类号： G11B5/71 , G11B5/72 , Y10S428/90 , Y10T428/24793 , Y10T428/27
摘要： A magnetic recording medium comprised of a non-magnetic support base having provided thereon a magnetic recording layer is disclosed. The medium also has position thereon a compound selected from the group consisting of carboxylic acids and carboxylic acid derivatives, the compound being present on an edge portion of the medium. The medium also includes an additional lubricant on the middle part of the medium, the additional lubricant being selected from the group consisting of alphatic acid esters, alphatic acids, silicons and phosphoric acid esters. By utilizing two different types of lubricants on different portions of the medium it is possible to obtain improved lubricating properties and thus improve runnability with respect to the operation of the magnetic recording medium.
摘要翻译： 公开了一种磁记录介质，其包括设置有磁记录层的非磁性支撑基底。 该介质还具有位于其上的位于介质边缘部分上的化合物，该化合物选自羧酸和羧酸衍生物。 该培养基还在培养基的中间部分包含另外的润滑剂，另外的润滑剂选自由以下组成的组：脂肪酸酯，脂肪酸，硅酮和磷酸酯。 通过在介质的不同部分上使用两种不同类型的润滑剂，可以获得改进的润滑性能，从而提高关于磁记录介质的操作的运行性能。
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公开(公告)号：US4552798A
公开(公告)日：1985-11-12
申请号：US577919
申请日：1984-02-07
申请人： Katsumi Ryoke , Yasuhiro Abe , Shinobu Iida , Eiichi Tadokoro
发明人： Katsumi Ryoke , Yasuhiro Abe , Shinobu Iida , Eiichi Tadokoro
IPC分类号： G11B5/78 , C09D5/23 , C09D101/18 , C09D127/04 , C09D127/06 , C09D175/00 , C09D175/04 , C10M105/34 , C10N40/18 , G11B5/72 , G11B23/50
CPC分类号： G11B5/72 , G11B23/50 , Y10S428/90 , Y10T428/24793 , Y10T428/27
摘要： A magnetic recording medium comprised of a support base having a magnetic recording layer positioned thereon is disclosed. The recording medium has positioned an aliphatic acid ester compound on an edge portion of the surface of the recording layer. By utilizing the aliphatic acid ester the recording medium has less audio output variation and the tracking control of the medium is improved. Further, the medium has good running characteristics and excellent sensitivity.
摘要翻译： 公开了一种磁记录介质，其由具有位于其上的磁记录层的支撑基底组成。 记录介质在记录层的表面的边缘部分上定位了脂族酸酯化合物。 通过利用脂肪酸酯，记录介质具有较少的音频输出变化，并且改善了介质的跟踪控制。 此外，介质具有良好的运行特性和优异的灵敏度。
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公开(公告)号：US4132827A
公开(公告)日：1979-01-02
申请号：US760269
申请日：1977-01-18
申请人： Yoshito Mukaida , Masaaki Fujiyama , Shigeo Komine , Masaaki Igarashi , Nobutaka Yamaguchi , Shinobu Iida , Akira Kasuga
发明人： Yoshito Mukaida , Masaaki Fujiyama , Shigeo Komine , Masaaki Igarashi , Nobutaka Yamaguchi , Shinobu Iida , Akira Kasuga
CPC分类号： G11B5/708 , G11B5/72 , Y10S428/90 , Y10T428/257 , Y10T428/30
摘要： In a magnetic recording substance comprising a non-magnetic support and a magnetic recording layer provided on the support, carbon black having a surface area of at least 700 m.sup.2 /g and an oil absorption of at least 300 ml (DBP)/100 g is contained in the magnetic layer thereby lowering the surface electric resistance without deteriorating the characteristics of the magnetic recording layer.
摘要翻译： 在包含非磁性载体和设置在载体上的磁记录层的磁记录物质中，表面积至少为700m 2 / g，吸油量至少为300ml（DBP）/ 100g的炭黑为 磁性层中含有，从而降低表面电阻，而不会降低磁记录层的特性。
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公开(公告)号：US4601946A
公开(公告)日：1986-07-22
申请号：US634517
申请日：1984-07-26
IPC分类号： G11B5/708 , C09C1/48 , C09D5/23 , C09D7/12 , C10M103/02 , C10M105/34 , C10M171/00 , C10N40/18 , G11B5/71 , G11B5/72
CPC分类号： G11B5/71 , Y10S428/90 , Y10T428/25 , Y10T428/257 , Y10T428/258 , Y10T428/259 , Y10T428/30
摘要： A magnetic recording medium is disclosed which comprises a non-magnetic support having provided thereon a magnetic recording layer consisting ferromagnetic powder and containing graphite and a fatty acid ester.
摘要翻译： 公开了一种磁记录介质，其包括非磁性载体，其上设置有由铁磁性粉末构成的含有石墨和脂肪酸酯的磁记录层。
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