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公开(公告)号：US4922675A
公开(公告)日：1990-05-08
申请号：US337778
申请日：1989-04-13
申请人： Masami Sato , Masaaki Fujiyama , Takashi Iwasaki , Masami Suzuki , Takashi Yoneyama , Hideaki Kosha
发明人： Masami Sato , Masaaki Fujiyama , Takashi Iwasaki , Masami Suzuki , Takashi Yoneyama , Hideaki Kosha
CPC分类号： G11B5/1871 , B24B21/16 , B24D11/00 , B24D3/004 , B24D3/28 , B24D3/346 , Y10T428/24983 , Y10T428/259
摘要： An abrasive tape comprises a flexible substrate and an abrasive layer which is overlaid on the flexible substrate and which contains abrasive grains and a binder. The abrasive grains comprise first abrasive grains, which have a mean grain diameter within the range of 0.07 .mu.m to 0.40 .mu.m and a Mohs hardness within the range of 5 to 7, and second abrasive grains, which have a mean grain diameter within the range of 0.20 .mu.m to 0.60 .mu.m and a Mohs hardness not lower than 8.5.
摘要翻译： 研磨带包括柔性基底和覆盖在柔性基底上并含有磨料颗粒和粘合剂的磨料层。 磨粒包含第一磨粒，其平均粒径在0.07μm至0.40μm的范围内，莫氏硬度在5至7的范围内，第二磨粒的平均粒径在 范围为0.20〜0.60μm，莫氏硬度不低于8.5。
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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：US4587170A
公开(公告)日：1986-05-06
申请号：US625770
申请日：1984-06-28
申请人： Kazuko Hanai , Takashi Yoneyama , Toshihisa Ito
发明人： Kazuko Hanai , Takashi Yoneyama , Toshihisa Ito
IPC分类号： C08G18/78 , C09D5/23 , C09D127/04 , C09D127/06 , C09D175/00 , C09D175/04 , G11B5/702 , G11B5/70
CPC分类号： G11B5/7021 , C08G18/7818 , Y10S428/90 , Y10T428/256 , Y10T428/257 , Y10T428/31609 , Y10T428/31935 , Y10T428/31971
摘要： A magnetic recording medium comprising a nonmagnetic support having coated thereon a magnetic recording layer comprising a ferromagnetic particles dispersed in a binder, the binder containing polyisocyanate and the molar ratio of (urethane bond+allophanate bond):(urea bond+biuret bond) being 85:15 to 60:40.
摘要翻译： 一种包含非磁性载体的磁记录介质，其上涂覆有分散在粘合剂中的铁磁颗粒的磁记录层，含有多异氰酸酯的粘合剂和（氨基甲酸酯键+脲基甲酸酯键）:(脲键+缩二脲键）的摩尔比为85 ：15到60:40。
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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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