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1. 发明授权

US4888212A Process for the preparation of magnetic recording medium 失效
标题翻译：磁记录介质的制备方法
公开(公告)号：US4888212A
公开(公告)日：1989-12-19
申请号：US107824
申请日：1987-10-14
申请人： Shinobu Iida , Masaaki Fujiyama , Shigeo Komine , Keisuke Yamada
发明人： Shinobu Iida , Masaaki Fujiyama , Shigeo Komine , Keisuke Yamada
IPC分类号： G11B5/84
CPC分类号： G11B5/84
摘要： A process for the preparation of a magnetic recording medium comprises the steps of subjecting a magnetic recording layer coated on a nonmagnetic support to surface smoothening treatment, the magnetic recording layer comprising a ferromagnetic powder dispersed in a binder, and then grinding both a surface of the magnetic recording layer and a surface of a back layer provided on the support using a specific grinder. The specific grinder is a fixed blade, a diamond wheel or a rotatable blade. A rotatable blade-grinder preferably employable for the grinding procedure comprises a rotatable body having a circular section and one or more blades provided on the periphery of the body.
摘要翻译：制备磁记录介质的方法包括以下步骤：将涂覆在非磁性载体上的磁记录层进行表面平滑处理，磁记录层包含分散在粘合剂中的铁磁性粉末，然后研磨磁记录层和使用特定研磨器设置在支撑体上的背层的表面。特定的研磨机是固定刀片，金刚石砂轮或可旋转刀片。优选地可用于研磨过程的可旋转刀片磨床包括具有圆形部分的旋转体和设置在身体周边上的一个或多个刀片。

2. 发明授权

US4132827A Magnetic recording substance 失效
标题翻译：磁记录物质
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
IPC分类号： C09C1/48 , C09D5/23 , C09D7/12 , G11B5/708 , G11B5/72 , H01F10/02 , B32B27/20
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。

3. 发明授权

US4721640A Flexible magnetic disk sheet 失效
标题翻译：柔性磁盘片
公开(公告)号：US4721640A
公开(公告)日：1988-01-26
申请号：US673640
申请日：1984-11-21
申请人： Mikihiko Kato , Shigeo Komine , Kazuhiko Morita
发明人： Mikihiko Kato , Shigeo Komine , Kazuhiko Morita
IPC分类号： G11B5/82 , C09D133/04 , C10M103/02 , C10M103/04 , C10M103/06 , C10N10/12 , C10N40/18 , G11B5/725 , G11B5/73 , G11B23/00 , G11B5/72
CPC分类号： G11B5/7305 , G11B5/725 , Y10S428/90 , Y10T428/24322 , Y10T428/25 , Y10T428/254 , Y10T428/259 , Y10T428/265 , Y10T428/31609 , Y10T428/31935
摘要： A flexible magnetic disk sheet including a central circular hole is described, having a protective layer on a surface portion surrounding the edge of the central circular hole, comprising the protective layer prepared by coating (a) a compound having an acrylate bond or a methacrylate bond at the end of at least one of a main chain and a side chain of molecules thereof, and (b) a solid lubricating agent, and exposing to radiation thereon for polymerizing and hardening it.
摘要翻译：描述了包括中心圆形孔的柔性磁盘片，在围绕中心圆形孔的边缘的表面部分上具有保护层，包括通过涂覆（a）具有丙烯酸酯键或甲基丙烯酸酯键的化合物制备的保护层在其分子的主链和侧链中的至少一个的末端，和（b）固体润滑剂，并暴露于其上的辐射以使其聚合和硬化。

4. 发明授权

US4454202A Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US4454202A
公开(公告)日：1984-06-12
申请号：US315555
申请日：1981-10-27
申请人： Shigeo Komine , Kazuhiko Morita , Nobuo Tsuji
发明人： Shigeo Komine , Kazuhiko Morita , Nobuo Tsuji
IPC分类号： C08L75/04 , C09D5/23 , G11B5/702 , G11B5/70
CPC分类号： G11B5/7022 , C08L75/04 , Y10S428/90 , Y10T428/31511 , Y10T428/31551 , Y10T428/31565 , Y10T428/31786 , Y10T428/31935
摘要： A magnetic recording medium having a magnetic paint applied to a base is disclosed. The magnetic paint contains a three-component binder which comprises 30 to 70% of polyurethane having a terminal OH group, 10 to 50% of an epichlorohydrin/diphenylolpropane polycondensate and 10 to 50% of a vinyl chloride/vinyl acetate copolymer, vinyl chloride/vinyl acetate/maleic acid copolymer or vinyl chloride/vinyl acetate/vinyl alcohol copolymer, the percentage being based on the weight of the binder.
摘要翻译：公开了一种具有施加到基座上的磁性涂料的磁记录介质。磁性漆包含三组分粘合剂，其包含30至70％的具有末端OH基团的聚氨酯，10至50％的表氯醇/二苯基丙烷缩聚物和10至50％的氯乙烯/乙酸乙烯酯共聚物，氯乙烯/ 乙酸乙烯酯/马来酸共聚物或氯乙烯/乙酸乙烯酯/乙烯醇共聚物，其百分比基于粘合剂的重量。

5. 发明授权

US4672913A Apparatus for making magnetic recording medium 失效
标题翻译：磁记录介质制造装置
公开(公告)号：US4672913A
公开(公告)日：1987-06-16
申请号：US861608
申请日：1986-05-09
申请人： Mikihiko Kato , Shinichi Kato , Kazunori Komatsu , Shigeo Komine
发明人： Mikihiko Kato , Shinichi Kato , Kazunori Komatsu , Shigeo Komine
IPC分类号： C09D5/23 , G11B5/845 , B05B5/02
CPC分类号： G11B5/845
摘要： In a method of and apparatus for making a magnetic recording medium, a plurality of rod-like orientation magnets are positioned in spaced relation in the movement direction of a non-magnetic substrate so that the magnetic pole facing the non-magnetic substrate is different between adjacent orientation magnets and the orientation magnets are oblique with respect to the substrate movement direction and alternately point reversely. The spaces between the orientation magnets are adjusted so that the intensity of the magnetic field generated in the substrate movement direction between adjacent orientation magnets is 50 Oe or less. A magnetic coating composition is applied onto the non-magnetic substrate, and magnetic grains contained in the composition are randomly orientated by the orientation magnets.
摘要翻译：在制造磁记录介质的方法和装置中，多个杆状取向磁体在非磁性基板的移动方向上以间隔的关系定位，使得面对非磁性基板的磁极在相邻取向磁铁和取向磁铁相对于基板移动方向倾斜并交替地反向地指向。调整取向磁体之间的空间，使得在相邻取向磁体之间的基板移动方向上产生的磁场的强度为50Oe以下。将磁性涂料组合物施加到非磁性基材上，并且组合物中所含的磁性颗粒通过取向磁体随机取向。

6. 发明授权

US4652500A Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US4652500A
公开(公告)日：1987-03-24
申请号：US848168
申请日：1986-04-04
申请人： Kiyomi Ejiri , Shigeo Komine
发明人： Kiyomi Ejiri , Shigeo Komine
IPC分类号： C09D5/23 , G11B5/708 , G11B5/71 , G11B5/714 , G11B5/70
CPC分类号： G11B5/714 , G11B5/708 , G11B5/71 , Y10S428/90 , Y10T428/25 , Y10T428/256 , Y10T428/257
摘要： A magnetic recording medium such as a magnetic recording disk or a magnetic recording tape comprising a nonmagnetic support and a magnetic recording layer provided on said support, said magnetic recording layer comprising a nonmagnetic inorganic powder and a ferromagnetic metal powder of a specific surface area in the range of 35-65 m.sup.2 /g dispersed in a binder, which is characterized in that said magnetic recording layer contains an alkyl ester of a fatty acid and an alkoxyalkyl ester of a fatty acid in amounts in the ranges of 5-15 wt. % and 0.5-10 wt. %, respectively, based on the amount of the ferromagnetic metal powder.
摘要翻译：一种磁记录介质，例如磁记录盘或磁记录带，其包括非磁性载体和设置在所述载体上的磁记录层，所述磁记录层包含非磁性无机粉末和比表面积的铁磁金属粉末分散在粘合剂中的35-65m 2 / g的范围，其特征在于所述磁记录层包含脂肪酸的烷基酯和脂肪酸的烷氧基烷基酯的量为5-15wt。％和0.5-10wt。％，分别基于铁磁性金属粉末的量。

7. 发明授权

US4652461A Method for making magnetic recording medium 失效
标题翻译：制造磁记录介质的方法
公开(公告)号：US4652461A
公开(公告)日：1987-03-24
申请号：US814989
申请日：1985-12-31
申请人： Mikihiko Kato , Shinichi Kato , Kazunori Komatsu , Shigeo Komine
发明人： Mikihiko Kato , Shinichi Kato , Kazunori Komatsu , Shigeo Komine
IPC分类号： C09D5/23 , G11B5/845 , B05D3/14
CPC分类号： G11B5/845
摘要： In a method of and apparatus for making a magnetic recording medium, a plurality of rod-like orientation magnets are positioned in spaced relation in the movement direction of a non-magnetic substrate so that the magnetic pole facing the non-magnetic substrate is different between adjacent orientation magnets and the orientation magnets are oblique with respect to the substrate movement direction and alternately point reversely. The spaces between the orientation magnets are adjusted so that the intensity of the magnetic field generated in the substrate movement direction between adjacent orientation magnets is 50 Oe or less. A magnetic coating composition is applied onto the non-magnetic substrate, and magnetic grains contained in the composition are randomly orientated by the orientation magnets.
摘要翻译：在制造磁记录介质的方法和装置中，多个杆状取向磁体在非磁性基板的移动方向上以间隔的关系定位，使得面对非磁性基板的磁极在相邻取向磁铁和取向磁铁相对于基板移动方向倾斜并交替地反向地指向。调整取向磁体之间的空间，使得在相邻取向磁体之间的基板移动方向上产生的磁场的强度为50Oe以下。将磁性涂料组合物施加到非磁性基材上，并且组合物中所含的磁性颗粒通过取向磁体随机取向。

8. 发明授权

US4647473A Method for forming protective layer on a flexible magnetic disc sheet 失效
标题翻译：在柔性磁盘片上形成保护层的方法
公开(公告)号：US4647473A
公开(公告)日：1987-03-03
申请号：US658712
申请日：1984-10-09
申请人： Mikihiko Kato , Shigeo Komine , Kazuhiko Morita , Yasutoshi Okuzawa
发明人： Mikihiko Kato , Shigeo Komine , Kazuhiko Morita , Yasutoshi Okuzawa
IPC分类号： G11B5/82 , C09D133/12 , G11B5/72 , G11B5/84 , G11B23/00 , G11B23/033 , G11B5/70
CPC分类号： G11B5/72 , Y10S428/90 , Y10T428/24322 , Y10T428/24942 , Y10T428/24975
摘要： A method for forming protective layer on a surface portion surrounding the edge of a central aperture of a flexible magnetic disc sheet is described, comprising providing a radiation polymerizable composition on a surface portion surrounding the edge of the central aperture of the flexible magnetic disc sheet by screen printing, and hardening the composition by exposure to radiation; a flexible magnetic disc is also described, wherein a protective layer by the foregoing method is provided, with said protective layer having an inner diameter larger than the diameter of the aperture of the disc sheet and an outer diameter smaller than the diameter of the aperture of a jacket enclosing the disc sheet.
摘要翻译：描述了在围绕柔性磁盘片的中心孔的边缘的表面部分上形成保护层的方法，其包括在围绕柔性磁盘片的中心孔的边缘的表面部分上提供可辐射聚合的组合物，该表面部分通过丝网印刷，并通过暴露于辐射来硬化组合物; 还描述了一种柔性磁盘，其中提供了通过上述方法的保护层，其中所述保护层的内径大于盘片的孔的直径，外径小于圆盘片的孔的直径围绕盘片的护套。

9. 发明授权

US4784907A Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US4784907A
公开(公告)日：1988-11-15
申请号：US944068
申请日：1986-12-22
申请人： Akihiro Matsufuji , Akira Kasuga , Shigeo Komine , Yasuyuki Yamada , Hajime Miyatsuka
发明人： Akihiro Matsufuji , Akira Kasuga , Shigeo Komine , Yasuyuki Yamada , Hajime Miyatsuka
IPC分类号： C09D5/23 , C09D127/04 , C09D127/06 , C09D175/00 , C09D175/04 , C10M107/46 , C10N40/18 , G11B5/702 , G11B5/708 , G11B5/71
CPC分类号： G11B5/71 , G11B5/7023 , Y10S428/90 , Y10T428/256 , Y10T428/257 , Y10T428/31609 , Y10T428/31935
摘要： In a magnetic recording medium such as a video tape comprising a nonmagnetic support and a magnetic recording layer provided on the support, said magnetic recording layer comprising a binder and a ferromagnetic powder dispersed therein, the improvement in which:the magnetic recording layer comprises a fatty acid ester lubricant and a lubricant other than the fatty acid ester lubricant;the binder is composed of a resin component comprising a resin containing a repeating unit which has a polar group and having a glass transition point of not lower than 50.degree. C., and a resin containing a repeating unit which has a polar group and having a glass transition point of lower than 50.degree. C; andat least one resin of the resins contains a repeating unit having a polar group such as --SO.sub.3 M, --OSO.sub.3 M or --PO(OM').sub.2, wherein M is hydrogen or an alkali metal atom, and M' is hydrogen, an alkali metal atom or a lower hydrocarbon group.
摘要翻译：在诸如包括非磁性载体和设置在载体上的磁记录层的录像带的磁记录介质中，所述磁记录层包括粘合剂和分散在其中的铁磁粉末，其改进在于：磁记录层包含脂肪酸酯润滑剂和脂肪酸酯润滑剂以外的润滑剂; 粘合剂由包含含有极性基团并且玻璃化转变温度不低于50℃的重复单元的树脂的树脂组分和含有极性基团并具有极性基团的重复单元的树脂组成玻璃化转变点低于50℃; 并且所述树脂的至少一种树脂含有具有极性基团的重复单元，例如-SO 3 M，-OSO 3 M或-PO（OM'）2，其中M为氢或碱金属原子，M'为氢，碱金属原子或低级烃基。

10. 发明授权

US4707392A Flexible magnetic disk 失效
标题翻译：灵活磁盘
公开(公告)号：US4707392A
公开(公告)日：1987-11-17
申请号：US706568
申请日：1985-02-28
申请人： Mikihiko Kato , Yasutoshi Okuzawa , Shigeo Komine , Kazuhiko Morita
发明人： Mikihiko Kato , Yasutoshi Okuzawa , Shigeo Komine , Kazuhiko Morita
IPC分类号： G11B5/72
CPC分类号： G11B5/72 , Y10S428/90 , Y10T428/24322 , Y10T428/24355 , Y10T428/24372 , Y10T428/24413 , Y10T428/31609 , Y10T428/31935
摘要： A flexible magnetic disk in which the friction between the magnetic sheet of the disk and a positioning member is reduced, the magnetic sheet is positioned properly and without offset each time it is loaded in a reading/reproducing device, and the tracking accuracy and dimensional accuracy are satisfactory. A protective layer is provided around the periphery of a central hole in the magnetic sheet. The protective layer is made of a composition containing a compound which has an acrylic or methacrylic acid ester bond at one or both of a main chain terminal and a side chain thereof. The compound is one which is cured by radiation. The thickness of the protective layer should be 30 microns or less, and the surface irregularity of the protective layer should be 0.03 microns or more represented in terms of a central line average roughness at a cutoff of 2.5 mm.
摘要翻译：一种柔性磁盘，其中磁盘的磁片和定位构件之间的摩擦减小，磁片在每次装载在读取/再现装置中时都适当地且没有偏移地定位，并且跟踪精度和尺寸精度令人满意在磁性片的中心孔周边设置有保护层。保护层由含有在主链末端和侧链的一个或两个上具有丙烯酸或甲基丙烯酸酯键的化合物的组合物制成。该化合物是通过辐射固化的化合物。保护层的厚度应为30微米或更小，并且保护层的表面不规则度应为0.03微米或更大，以2.5毫米截止点的中心线平均粗糙度表示。

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