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公开(公告)号：US4780365A
公开(公告)日：1988-10-25
申请号：US19286
申请日：1987-02-26
IPC分类号： C09D101/18 , C09D175/04 , G11B5/73 , G11B5/735 , G11B5/70
CPC分类号： G11B5/735 , Y10S428/90 , Y10T428/25 , Y10T428/257 , Y10T428/265
摘要： In a magnetic recording medium comprising a nonmagnetic support, a magnetic recording layer provided on one surface of said support and a back layer containing carbon black provided on another surface of said support, the improvement wherein said back layer has thickness of not larger than 0.6 .mu.m and contains an inorganic filler powder having a Mohs' scale of hardness of not less than 5, a mean particle diameter of smaller than the thickness of the back layer and not smaller than 1/5 of the thickness thereof, and the maximum particle diameter of not larger than 11/10 of the thickness of the back layer.
摘要翻译： 在包括非磁性载体的磁记录介质中，设置在所述载体的一个表面上的磁记录层和设置在所述载体的另一表面上的含有炭黑的背层，其中所述背层的厚度不大于0.6μm 并且含有莫氏硬度不小于5的无机填料粉末，平均粒径小于背层厚度，不小于其厚度的1/5，最大粒径 不大于背层厚度的11/10。
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公开(公告)号：US4614685A
公开(公告)日：1986-09-30
申请号：US598093
申请日：1984-04-09
申请人： Katsumi Ryoke , Kenichi Masuyama , Eiichi Tadokoro
发明人： Katsumi Ryoke , Kenichi Masuyama , Eiichi Tadokoro
CPC分类号： G11B5/708 , Y10S428/90 , Y10T428/25 , Y10T428/257
摘要： A magnetic recording medium comprised of a non-magnetic support base having a magnetic layer provided thereon is disclosed. The magnetic layer is comprised of carbon black having an average particle size of 30 to 50 m.mu. and an iron oxide which contains Co. The iron oxide containing the Co has a specific surface area of 25 m.sup.2 /g or more. The carbon black and the iron oxide containing the Co are dispersed in a binder. By utilizing the particular type of carbon black in combination with the particular iron oxide containing Co in the magnetic layer it is possible to greatly improve the running characteristics of the magnetic recording medium as well as obtain an improved RF output.
摘要翻译： 公开了一种磁记录介质，其包括具有设置在其上的磁性层的非磁性支撑基底。 磁性层由平均粒径为30〜50μm的碳黑和含有Co的氧化铁构成。含有Co的氧化铁的比表面积为25m 2 / g以上。 含有Co的炭黑和氧化铁分散在粘合剂中。 通过将特定类型的炭黑与在磁性层中含有Co的特定氧化铁组合使用，可以极大地改善磁记录介质的运行特性并获得改进的RF输出。
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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：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：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：US4251843A
公开(公告)日：1981-02-17
申请号：US075546
申请日：1979-09-14
IPC分类号： G11B23/033 , G11B23/50 , G11B23/02 , G11B5/00
CPC分类号： G11B23/0332 , G11B23/505
摘要： The inner surface of a disc jacket for retaining a magnetic recording disc is provided with a fibrous layer containing an antistatic agent. The fibrous layer is composed of a nonwoven cloth impregnated with the antistatic agent. The antistatic agent may be applied to the nonwoven cloth by spraying instead of impregnation.
摘要翻译： 用于保持磁记录盘的盘套的内表面设置有含有抗静电剂的纤维层。 纤维层由浸渍有抗静电剂的无纺布组成。 可以通过喷涂而不是浸渍将抗静电剂施加到无纺布上。
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7.发明申请POLISHING METHOD FOR A WORKPIECE AND POLISHING TOOL USED FOR THE POLISHING METHOD 审中-公开用于抛光方法的工件和抛光工具的抛光方法公开(公告)号：US20110028074A1
公开(公告)日：2011-02-03
申请号：US12845149
申请日：2010-07-28
申请人： Kenichi Masuyama
发明人： Kenichi Masuyama
IPC分类号： B24B1/00
CPC分类号： B24B27/0076 , B24B41/002 , B24D5/066 , B24D5/10 , B24D13/02 , B24D13/20
摘要： Provided is a polishing tool capable of forming a high-quality surface of a workpiece for a short period of time. A polishing tool includes: a rotation shaft arranged parallel to a sending direction of moving the polishing tool relative to a workpiece; and at least two polishing bodies. The polishing body includes a foamed resin such as a foamed polyurethane resin, and has an outer peripheral surface having a porosity higher than that of the polishing body. The polishing body includes a non-foamed resin such as a non-foamed polyurethane resin being a material more rigid than that for the polishing body. When polishing-processing, the polishing body performs polishing removal on a surface of the workpiece, and the polishing body smoothes a waviness formed on the surface through the polishing removal.
摘要翻译： 提供能够在短时间内形成工件的高品质表面的研磨工具。 抛光工具包括：平行于发送方向设置的旋转轴，用于相对于工件移动抛光工具; 和至少两个抛光体。 抛光体包括发泡聚氨酯树脂等泡沫树脂，其外周面的孔隙率高于研磨体。 抛光体包括非发泡树脂，例如非发泡聚氨酯树脂，其是比抛光体更刚性的材料。 当抛光处理时，抛光体在工件的表面上进行抛光去除，并且抛光体通过抛光去除来平滑在表面上形成的波纹。
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公开(公告)号：US5510177A
公开(公告)日：1996-04-23
申请号：US994522
申请日：1992-12-21
申请人： Kenichi Masuyama , Kazuo Kato , Hiroaki Araki
发明人： Kenichi Masuyama , Kazuo Kato , Hiroaki Araki
IPC分类号： G11B5/702 , C09D5/23 , C09D127/04 , C09D127/06 , C09D175/06 , G11B5/708 , G11B5/716 , G11B5/73 , B32B5/16 , G11B5/66
CPC分类号： G11B5/716 , Y10S428/90 , Y10T428/25 , Y10T428/256 , Y10T428/257 , Y10T428/259 , Y10T428/31551 , Y10T428/31663 , Y10T428/31721 , Y10T428/31725 , Y10T428/31786 , Y10T428/31855 , Y10T428/31909 , Y10T428/31935 , Y10T428/31971
摘要： A magnetic recording medium having two or more magnetic layers is disclosed, comprising a first magnetic layer and a second magnetic layer which-have been provided in this order on a surface of a nonmagnetic support, and which contain ferromagnetic particles and a binder, wherein said second magnetic layer (outermost layer) contains nonmagnetic particles having a pH of less than 7, and a Mohs' hardness of 6 or more, in an amount of from 1 to 20 parts by weight, per 100 parts by weight of the ferromagnetic particles in the second magnetic layer, and said first magnetic layer contains nonmagnetic particles having a pH of 7 or more, and a Mohs' hardness of 6 or more, in an amount of from 5 to 50 parts by weight, per 100 parts by weight of the ferromagnetic particles in the first magnetic layer.
摘要翻译： 公开了一种具有两个或多个磁性层的磁记录介质，包括在非磁性载体的表面上依次提供的第一磁性层和第二磁性层，并且含有铁磁颗粒和粘合剂，其中所述 第二磁性层（最外层）每100重量份的铁磁颗粒含有pH为小于7的非磁性颗粒，并且莫氏硬度为6或更大，为1至20重量份 所述第二磁性层和所述第一磁性层包含pH为7以上的非磁性颗粒，并且每100重量份的所述第一磁性层含有5至50重量份的莫氏硬度为6以上的莫氏硬度 第一磁性层中的铁磁颗粒。
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公开(公告)号：US4847156A
公开(公告)日：1989-07-11
申请号：US110401
申请日：1987-10-20
IPC分类号： G11B5/702
CPC分类号： G11B5/702 , G11B5/7028 , Y10S428/90 , Y10T428/31609
摘要： A magnetic recording medium comprising a non-magnetic support having thereon a magnetic layer containing (a) ferromagnetic particles, (b) a binder containing at least one resin substituted with at least one polar group selected from an --SO.sub.3 M group, a --COOM group, an --OSO.sub.3 M group, an ##STR1## group and a ##STR2## group, wherein M represents H, Li, Na or K and M' represents H, Li, Na, K or an alkyl group, and (c) at least one fatty acid lubricating agent comprising at least one fatty acid derivative represented by formula (I): ##STR3## in which R represents a hydrocarbon group having from 11 to 21 carbon atoms, X represents hydrogen or a methyl group, R' represents a hydrocarbon group having from 1 to 8 carbon atoms and n is an integer of from 2 to 20.
摘要翻译： 一种磁记录介质，包括其上具有磁性层的非磁性载体，所述磁性层含有（a）铁磁颗粒，（b）含有至少一种被至少一个选自-SO 3 M基团，-COOM基团的极性基团取代的树脂的粘合剂 ，-OSO3M基团，
基团和 基团，其中M表示H，Li，Na或K，M'表示H，Li，Na，K或烷基，（c）至少 一种脂肪酸润滑剂，其包含至少一种式（I）表示的脂肪酸衍生物：其中R表示具有11至21个碳原子的烃基，X表示氢或甲基，R' 表示碳原子数为1〜8的烃基，n为2〜20的整数。 -
公开(公告)号：US4761243A
公开(公告)日：1988-08-02
申请号：US943211
申请日：1986-12-08
摘要： A process for the preparation of a magnetic paint comprising a ferromagnetic powder, an abrasive and a binder, which comprises the steps of preparing the abrasive dispersion comprising the abrasive and the binder, and then mixing said abrasive dispersion and the ferromagnetic powder.
摘要翻译： 一种用于制备包含铁磁性粉末，研磨剂和粘合剂的磁性涂料的方法，其包括以下步骤：制备包含研磨剂和粘合剂的磨料分散体，然后混合所述磨料分散体和铁磁性粉末。
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