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1. 发明授权

US4500599A Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US4500599A
公开(公告)日：1985-02-19
申请号：US613748
申请日：1984-05-23
申请人： Hiroshi Ogawa , Chiaki Mizuno , Kouichi Masaki , Masaaki Suzuki , Yasuo Tamai
发明人： Hiroshi Ogawa , Chiaki Mizuno , Kouichi Masaki , Masaaki Suzuki , Yasuo Tamai
IPC分类号： C09D5/23 , C09D7/12 , G11B5/706 , G11B5/714 , G11B5/70 , B32B5/16
CPC分类号： G11B5/70652 , Y10S428/90 , Y10T428/265
摘要： A magnetic recording medium comprising a nonmagnetic base having formed thereon a magnetic layer containing a fine particulate ferromagnetic material dispersed in a binder is disclosed. The ferromagnetic material is a mixture of two fine ferromagnetic powders (a) and (b) in a weight ratio of from 90/10 to 30/70. The powder (a) comprises .gamma.-Fe.sub.2 O.sub.3 particles having a coercivity (Hc) of 330 to 390 Oe and a saturation magnetization (.sigma.s) of 68 to 80 emu/g at a maximum magnetizing force (Hm) of 5 KOe, and a specific surface area of 18 to 25 m.sup.2 /g, and powder (b) comprises .gamma.-Fe.sub.2 O.sub.3 particles having a coercivity (Hc) of 400 to 450 Oe and a saturation magnetization (.sigma.s) of 65 to 78 emu/g at a maximum magnetizing force (Hm) of 5 KOe, and a specific surface area of 22 to 30 m.sup.2 /g. The tape has the ability to clearly and faithfully reproduce high fidelity sound.
摘要翻译：公开了一种磁记录介质，其包括在其上形成有包含分散在粘合剂中的细颗粒铁磁材料的磁性层的非磁性基底。铁磁材料是两种细铁磁粉末（a）和（b）的重量比为90/10至30/70的混合物。粉末（a）包括在5KOe的最大磁化力（Hm）下矫顽力（Hc）为330至390Oe，饱和磁化强度（sigma s）为68至80emu / g的γ-Fe 2 O 3颗粒，以及比表面积为18〜25m2 / g，粉末（b）包含矫顽力（Hc）为400〜450Oe，饱和磁化强度（sigma）为65〜78emu / g的γ-Fe 2 O 3粒子磁化力（Hm）为5KOe，比表面积为22〜30m2 / g。磁带具有清晰忠实地再现高保真度的声音的能力。

2. 发明授权

US4728558A Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US4728558A
公开(公告)日：1988-03-01
申请号：US890342
申请日：1986-07-29
申请人： Toshio Ono , Yasuo Tamai , Chiaki Mizuno , Hiroshi Ogawa , Shinji Saito
发明人： Toshio Ono , Yasuo Tamai , Chiaki Mizuno , Hiroshi Ogawa , Shinji Saito
IPC分类号： C09D5/23 , C09D127/04 , C09D127/06 , C09D175/06 , G11B5/70 , G11B5/73 , G11B5/78
CPC分类号： G11B5/70 , G11B5/7305 , Y10S428/90 , Y10T428/24355 , Y10T428/265
摘要： A magnetic recording medium such as an audio-tape or a video-tape comprising a flexible support and a magnetic recording layer provided on one surface of said support, which is characterized in that the total of the thickness of said magnetic recording layer (dM) and the thickness of said support (dB), namely dM plus dB, is not larger than 14 .mu.m; the ratio of the thickness of said magnetic recording layer (dM) to the thickness of said support (dB), namely dM/dB, is in the range of 0.6-1.0; and said magnetic recording medium has F-3 tensile strength in the range of 6.0-8.5 kg/mm.sup.2.
摘要翻译：一种磁记录介质，例如音频带或录像带，包括设置在所述支撑体的一个表面上的柔性支撑和磁记录层，其特征在于，所述磁记录层（dM）的厚度总和并且所述载体的厚度（dB）即dM加dB不大于14μm; 所述磁记录层（dM）的厚度与所述支架的厚度的比（dB）即dM / dB在0.6-1.0的范围内; 并且所述磁记录介质的F-3拉伸强度在6.0-8.5kg / mm2的范围内。

3. 发明授权

US4649081A Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US4649081A
公开(公告)日：1987-03-10
申请号：US787776
申请日：1985-10-15
申请人： Hiroshi Ogawa , Shinji Saito , Chiaki Mizuno , Yasuo Tamai
发明人： Hiroshi Ogawa , Shinji Saito , Chiaki Mizuno , Yasuo Tamai
IPC分类号： G11B5/708 , C09D5/23 , C09D7/12 , G11B5/71 , G11B5/73
CPC分类号： G11B5/71 , Y10S428/90 , Y10T428/31663
摘要： A magnetic recording medium such as an audio-tape or a video-tape comprising a nonmagnetic support and a magnetic recording layer provided on said support, said magnetic recording layer comprising a ferromagnetic powder dispersed in a binder, which is characterized in that said magnetic recording layer comprises at least one modified silicon compound having molecular weight of less than 3,000 and at least one modified silicon compound having molecular weight of not less than 3,000.
摘要翻译：一种诸如音频带的磁记录介质或包括设置在所述支撑件上的非磁性支撑和磁记录层的录像带，所述磁记录层包括分散在粘合剂中的铁磁性粉末，其特征在于所述磁记录层包含分子量小于3,000的至少一种改性硅化合物和至少一种分子量不小于3,000的改性硅化合物。

4. 发明授权

US4510203A Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US4510203A
公开(公告)日：1985-04-09
申请号：US500709
申请日：1983-06-03
申请人： Hiroshi Ogawa , Chiaki Mizuno , Yasuo Tamai
发明人： Hiroshi Ogawa , Chiaki Mizuno , Yasuo Tamai
IPC分类号： C08G18/63 , C09D5/23 , C09D123/04 , C09D127/04 , C09D127/06 , C09D129/04 , G11B5/702 , G11B5/70
CPC分类号： G11B5/7023 , C08G18/633 , G11B5/7027 , Y10S428/90 , Y10T428/31609 , Y10T428/31786 , Y10T428/31797 , Y10T428/31935
摘要： A magnetic recording medium is disclosed which is comprised of a non-magnetic support having thereon a magnetic layer comprising a ferromagnetic powder dispersed in a binder. The binder is comprised of a copolymer of vinyl chloride-vinyl acetate-vinyl alcohol and a copolymer of ethylene-vinyl acetate which is graft-polymerized with vinyl chloride and, optionally, a polyisocyanate. The recording medium has excellent electromagnetic properties, running properties and durability.
摘要翻译：公开了一种磁记录介质，其包括其上具有分散在粘合剂中的铁磁粉末的磁性层的非磁性载体。粘合剂由氯乙烯 - 乙酸乙烯酯 - 乙烯醇和乙烯 - 乙酸乙烯酯的共聚物与氯乙烯和任选的多异氰酸酯接枝聚合的共聚物组成。记录介质具有优异的电磁特性，运行性能和耐久性。

5. 发明授权

US4952064A Method for preparing magnetic coating compositions 失效
标题翻译：磁性涂料组合物的制备方法
公开(公告)号：US4952064A
公开(公告)日：1990-08-28
申请号：US459174
申请日：1989-12-29
申请人： Toshio Ono , Chiaki Mizuno , Yasuo Tamai , Hiroshi Ogawa
发明人： Toshio Ono , Chiaki Mizuno , Yasuo Tamai , Hiroshi Ogawa
IPC分类号： B01F3/12
CPC分类号： B01F3/1207
摘要： A single two-shaft continuous kneading and mixing machine, which is provided with a pair of shafts having blade members secured thereto, and a barrel accommodating the shafts such that they can be rotated, carries out kneading of a mixture of magnetic grains and a solution, which contains a binder in an organic solvent, in a normal kneading region and thereafter carries out dilution kneading of the mixture, which resulted after kneading in the normal kneading region was carried out, and an organic solvent in a dilution kneading region. The solids concentration in the mixture subjected to kneading in the normal kneading region is adjusted so that it falls within the range of 65 to 95 wt %. The solids concentration in the mixture subjected to dilution kneading is adjusted so that it falls within the range of 30 to 60 wt %. The width of a gap between blade members, which are secured to different shafts and which face each other, and the width of a gap between each blade member and the inner surface of the barrel in the dilution kneading region are made smaller than the widths of corresponding gaps in the normal kneading region.
摘要翻译：具有固定有刀片部件的一对轴的单个双轴连续捏和混合机和容纳轴的滚筒使其能够转动，进行磁性粒子和溶液的混合的捏合在正常捏合区域中含有有机溶剂中的粘合剂，然后进行在正常混炼区域中捏合后混合物的稀释混炼和稀释混炼区域中的有机溶剂。调整在正常捏合区域中进行捏合的混合物中的固体浓度，使其在65〜95重量％的范围内。调整进行稀释混炼的混合物中的固体浓度，使其在30〜60重量％的范围内。固定在不同轴上并且彼此面对的叶片构件之间的间隙的宽度以及稀释混合区域中的每个叶片构件和筒的内表面之间的间隙的宽度被制成小于正常捏合区域中的相应间隙。

6. 发明授权

US4724162A Process for producing magnetic recording medium 失效
标题翻译：磁记录介质的制造方法
公开(公告)号：US4724162A
公开(公告)日：1988-02-09
申请号：US39878
申请日：1987-04-20
申请人： Shinji Saito , Hiroshi Ogawa , Chiaki Mizuno , Toshio Ono , Yasuo Tamai
发明人： Shinji Saito , Hiroshi Ogawa , Chiaki Mizuno , Toshio Ono , Yasuo Tamai
IPC分类号： B01F3/12 , G11B5/702 , G11B5/842 , H01F10/02
CPC分类号： G11B5/842 , G11B5/7028
摘要： An improvement of a process for producing a magnetic recording medium comprising coating a non-magnetic support with a magnetic paint comprising a magnetic layer forming component containing ferromagnetic powder and a resin component dispersed in an organic solvent and drying the coated layer. The improvement resides in the preparation of the magnetic paint. In the improvement, the magnetic paint is obtained by kneading said magnetic layer forming component and a first solvent having a solubility parameter of not lower than 9.5[cal..multidot.cm.sup.-3 ].sup.1/2 as measured by Small method and adding a second solvent to the resulting kneaded product so that the mixed organic solvent in the magnetic paint has a solubility parameter of lower than 9.5[cal.multidot.cm.sup.-3 ].sup.1/2 to thereby disperse the magnetic layer forming component in the organic solvent.
摘要翻译：一种制造磁记录介质的方法的改进，包括用包含含有铁磁粉末的磁性层形成组分和分散在有机溶剂中的树脂组分的磁性涂料涂覆非磁性载体并干燥涂层。改进在于磁性涂料的制备。在此改进中，磁性涂料是通过将所述磁性层形成组分和溶解度参数不低于9.5 [cal.xcm-3] 1/2的第一种溶剂进行捏合而获得的，通过Small法测量，并将第二溶剂加入到得到的混炼物，使得磁性涂料中的混合有机溶剂的溶解度参数低于9.5 [calxcm-3] 1/2，从而将磁性层形成组分分散在有机溶剂中。

7. 发明授权

US4687710A Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US4687710A
公开(公告)日：1987-08-18
申请号：US898746
申请日：1986-08-18
申请人： Hiroshi Ogawa , Shinji Saito , Chiaki Mizuno , Yasuo Tamai
发明人： Hiroshi Ogawa , Shinji Saito , Chiaki Mizuno , Yasuo Tamai
IPC分类号： G11B5/708 , C09D5/23 , C09D7/12 , G11B5/71 , G11B5/73 , G11B5/704
CPC分类号： G11B5/7305 , G11B5/71 , Y10S428/90 , Y10S428/91 , Y10T428/31663
摘要： A magnetic recording medium comprising a nonmagnetic support and a magnetic recording layer provided on said support, said magnetic recording layer comprising a ferromagnetic powder dispersed in a binder, which is characterized in that said nonmagnetic support has heat shrinkage ratio of not higher than 1.0% at 110.degree. C. for 4 hours and said magnetic recording layer comprises at least one fatty acid and at least one modified silicon compound.
摘要翻译：一种包含非磁性载体和设置在所述载体上的磁记录层的磁记录介质，所述磁记录层包含分散在粘合剂中的铁磁性粉末，其特征在于，所述非磁性载体的热收缩率不高于1.0％ 110℃4小时，所述磁记录层包含至少一种脂肪酸和至少一种改性硅化合物。

8. 发明授权

US4781964A Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US4781964A
公开(公告)日：1988-11-01
申请号：US898350
申请日：1986-08-20
申请人： Chiaki Mizuno , Yasuo Tamai , Hiroshi Ogawa , Shinji Saito
发明人： Chiaki Mizuno , Yasuo Tamai , Hiroshi Ogawa , Shinji Saito
IPC分类号： G11B5/70 , C09D5/23 , C09D127/04 , C09D127/06 , C09D175/00 , C09D175/04 , G11B5/73
CPC分类号： G11B5/7305 , Y10S428/90 , Y10T428/24355
摘要： A magnetic recording medium such as an audio-tape or a video-tape comprising a flexible support and a magnetic recording layer provided on a surface of said support, which is characterized in that the ratio of Young's modulus of said magnetic recording layer in the longitudinal direction (Em) to Young's modulus of said support in the longitudinal direction (Eb), namely Em/Eb, is in the range of 1.20-3.20.
摘要翻译：一种磁记录介质，例如音频带或录像带，其包括设置在所述支撑体的表面上的柔性支撑件和磁记录层，其特征在于，所述磁记录层在纵向上的杨氏模量所述载体在纵向方向（Eb）的方向（Em）与杨氏模量即Em / Eb在1.20-3.20的范围内。

9. 发明授权

US4780353A Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US4780353A
公开(公告)日：1988-10-25
申请号：US83896
申请日：1987-08-06
申请人： Masatoshi Takahashi , Chiaki Mizuno , Hiroshi Ogawa , Yasuo Tamai , Noburo Hibino
发明人： Masatoshi Takahashi , Chiaki Mizuno , Hiroshi Ogawa , Yasuo Tamai , Noburo Hibino
IPC分类号： G11B5/66 , C09D5/23 , C09D127/04 , C09D127/06 , C09D175/00 , C09D175/04 , G11B5/70 , G11B5/706 , G11B5/73
CPC分类号： G11B5/7305 , G11B5/70615 , Y10S428/90 , Y10T428/24355 , Y10T428/25 , Y10T428/256 , Y10T428/31786
摘要： A magnetic recording medium comprising a flexible support having coated thereon a magnetic layer is disclosed. The support has a surface roughness of from 0.01 to 0.1 .mu.m, the magnetic recording medium has a percent heat shrinkage of 1% or less in the direction of maximum shrinkage thereof after standing at 110.degree. C. for 4 hours, and the magnetic layer contains a metal or alloy fine powder as a ferromagnetic powder. The magnetic recording medium has a excellent running property after repeated use and a small percent heat shrinkage.
摘要翻译：公开了一种包括其上涂覆有磁性层的柔性支撑体的磁记录介质。该载体的表面粗糙度为0.01〜0.1μm，磁记录介质在110℃放置4小时后，其最大收缩方向的热收缩率为1％以下，磁性层含有作为铁磁粉末的金属或合金细粉末。磁记录介质在重复使用后具有优异的运行性能和小的热收缩率。

10. 发明授权

US4728563A Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US4728563A
公开(公告)日：1988-03-01
申请号：US898421
申请日：1986-08-20
申请人： Shinji Saito , Hiroshi Ogawa , Chiaki Mizuno , Yasuo Tamai
发明人： Shinji Saito , Hiroshi Ogawa , Chiaki Mizuno , Yasuo Tamai
IPC分类号： G11B5/70 , C09D5/23 , C09D127/04 , C09D127/06 , C09D175/00 , C09D175/04 , G11B5/73 , G11B5/704
CPC分类号： G11B5/7305 , Y10S428/90 , Y10T428/24942 , Y10T428/2978
摘要： A magnetic recording medium in the form of tape such as an audio-tape or a video-tape comprising a flexible support and a magnetic recording layer provided on said support, said magnetic recording layer comprising a ferromagnetic powder dispersed in a binder, which is characterized in that said magnetic recording medium has dynamic modulus of not lower than 4.5.times.10.sup.10 dyne/cm.sup.2 in the longitudinal direction at 110.degree. C.
摘要翻译：磁带式磁记录介质，例如音频带或录像带，其中包括柔性支撑件和设置在所述支架上的磁记录层，所述磁记录层包括分散在粘合剂中的铁磁性粉末，其特征在于因为所述磁记录介质在110℃下的纵向的动态模量不低于4.5×10 10达因/ cm 2。

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