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11. 发明授权

US5480716A Magnetic recording medium comprising ferromagnetic particles and a compound with a pyrimidine or tetrazaindene structure 失效
标题翻译：包含铁磁颗粒和具有嘧啶或四氮茚结构的化合物的磁记录介质
公开(公告)号：US5480716A
公开(公告)日：1996-01-02
申请号：US262843
申请日：1994-06-21
申请人： Koji Naoe , Kiyomi Ejiri
发明人： Koji Naoe , Kiyomi Ejiri
IPC分类号： B22F1/00 , C09D5/23 , G11B5/706 , G11B5/712 , G11B5/73 , H01F1/06 , G11B5/00
CPC分类号： G11B5/70621 , G11B5/712 , Y10S428/90 , Y10T428/256 , Y10T428/27 , Y10T428/2991
摘要： A magnetic recording medium is disclosed which includes a magnetic layer containing ferromagnetic metal particles containing Al in an amount of 0.5 to 6% by weight per the total weight of metal components contained in the ferromagnetic metal particles, the ferromagnetic metal particles having the surfaces thereof coated with a compound or compounds of formula (1) or (2), as described herein. The magnetic recording medium has reduced abrasion with respect to magnetic heads and does not cause magnetic head fouling even under low humidity conditions.
摘要翻译：公开了一种磁记录介质，其包括含铁磁金属颗粒的磁性层，所述铁磁金属颗粒含有铁含量为铁磁性金属颗粒中所含金属组分总重量的0.5至6重量％的Al，其表面涂覆有强磁性金属颗粒与式（1）或（2）的化合物或化合物反应。磁记录介质相对于磁头具有减少的磨损，即使在低湿度条件下也不会引起磁头结垢。

12. 发明授权

US06548160B2 Magnetic recording media 有权
标题翻译：磁记录媒体
公开(公告)号：US06548160B2
公开(公告)日：2003-04-15
申请号：US09728308
申请日：2000-12-01
申请人： Koji Naoe , Kiyomi Ejiri
发明人： Koji Naoe , Kiyomi Ejiri
IPC分类号： G11B5708
CPC分类号： G11B5/708 , Y10T428/256 , Y10T428/265
摘要： The present invention aims to provide a magnetic recording medium capable of high-density recording with excellent running durability and preservability as well as a magnetic recording medium capable of high-density recording with low noise even at high output and excellent running durability. Disclosed are a magnetic recording medium comprises a magnetic layer containing a ferromagnetic powder and a binder provided on a nonmagnetic flexible substrate and a magnetic recording medium comprising a nonmagnetic layer containing a nonmagnetic powder and a binder and a magnetic layer containing a ferromagnetic powder and a binder provided in this order on a nonmagnetic flexible substrate. Provided that said magnetic layer contains a zirconia powder having an average primary particle diameter of 0.005-0.2 &mgr;m, or said magnetic layer has an average thickness in the range of 0.04-0.3 &mgr;m, said ferromagnetic powder is a metal alloy powder having a as of 130 A.m2/kg or more, and said magnetic layer contains a granulated powder having an average primary particle diameter of 0.005-0.2 &mgr;m and a specific gravity of 5 or more.
摘要翻译：本发明的目的是提供一种具有优异的运行耐久性和保存性的高密度记录的磁记录介质以及即使在高输出下也能够以低噪声进行高密度记录的磁记录介质和优异的运行耐久性。磁记录介质包括含有铁磁性粉末和设置在非磁性柔性基板上的粘合剂的磁性层和包含非磁性粉末和粘合剂的非磁性层的磁记录介质和含有铁磁粉末和粘结剂的磁性层订购非磁性柔性基板。假设所述磁性层含有平均一次粒径为0.005-0.2μm的氧化锆粉末，或者所述磁性层的平均厚度在0.04-0.3μm的范围内，所述铁磁性粉末是具有 130Am 2 / kg以上，所述磁性层含有平均一次粒径为0.005〜0.2μm，比重为5以上的造粒粉末。

13. 发明授权

US6074724A Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US6074724A
公开(公告)日：2000-06-13
申请号：US918864
申请日：1997-08-26
申请人： Hiroo Inaba , Kiyomi Ejiri , Masaki Suzuki , Koji Naoe , Yuichiro Murayama , Hiroaki Takano
发明人： Hiroo Inaba , Kiyomi Ejiri , Masaki Suzuki , Koji Naoe , Yuichiro Murayama , Hiroaki Takano
IPC分类号： G11B5/702 , G11B5/706
CPC分类号： B82Y15/00 , G11B5/7021 , G11B5/7022 , G11B5/70621 , Y10S428/90 , Y10T428/24355 , Y10T428/25 , Y10T428/257 , Y10T428/265
摘要： A magnetic recording medium is disclosed, which comprises a support having thereon a magnetic layer comprising a binder and a ferromagnetic powder dispersed therein, wherein said binder comprises a polyurethane resin having at least one cyclic hydrocarbon group and at least one ether linkage, and said ferromagnetic powder is a ferromagnetic metallic powder which comprises Fe and has a mean major-axis length of from 0.05 to 0.19 .mu.m and a crystallite size of from 100 to 230 .ANG.; and further a magnetic recording medium is disclosed, comprising a support having thereon in succession an undercoat layer comprising a binder U and an inorganic powder dispersed therein and a magnetic layer comprising a binder M and a ferromagnetic powder dispersed therein, wherein at least either of the binder U or M comprises a polyurethane resin having at least one cyclic hydrocarbon group and at least one ether linkage and said ferromagnetic powder is a ferromagnetic metallic powder which comprises Fe and has a mean major-axis length of from 0.05 to 0.19 .mu.m and a crystallite size of from 100 to 230 .ANG..
摘要翻译：公开了一种磁记录介质，其包括其上具有包含粘合剂和分散在其中的铁磁粉末的磁性层的载体，其中所述粘合剂包含具有至少一个环状烃基和至少一个醚键的聚氨酯树脂，并且所述铁磁性粉末是含铁的铁磁性金属粉末，其平均长轴长度为0.05至0.19μm，微晶尺寸为100至230安培; 并且还公开了一种磁记录介质，包括其上连续地具有包含粘合剂U和分散在其中的无机粉末的底涂层的支撑体和包含粘合剂M和分散在其中的铁磁性粉末的磁性层，其中，粘合剂U或M包含具有至少一个环状烃基和至少一个醚键的聚氨酯树脂，并且所述铁磁性粉末是包含Fe并且具有0.05至0.19μm的平均长轴长度的铁磁性金属粉末，以及微晶尺寸为100至230安培。

14. 发明授权

US5955189A Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US5955189A
公开(公告)日：1999-09-21
申请号：US773512
申请日：1996-12-23
申请人： Kiyomi Ejiri , Koji Naoe
发明人： Kiyomi Ejiri , Koji Naoe
IPC分类号： G11B5/706 , G11B5/708 , G11B5/714
CPC分类号： G11B5/7085 , G11B5/70621 , G11B5/708 , G11B5/714 , Y10S428/90 , Y10T428/25 , Y10T428/256 , Y10T428/257 , Y10T428/258 , Y10T428/259 , Y10T428/265
摘要： A magnetic recording medium includes at least one magnetic layer formed by dispersing a ferromagnetic powder in a binder, the ferromagnetic powder including at least one kind of rare earth metal element selected from Y or metal elements of lanthanide series and being constituted of acicular ferromagnetic alloy powder particles whose .sigma. s is in the range of 120 to 160 emu/g, whose average longitudinal axis length is in the range of 0.04 to 0.2 .mu.m and whose crystallite size is in the range of 100 to 300 angstroms, the magnetic layer including an abrasive agent whose average particle diameter is in the range of 0.03 to 0.3 .mu.m and containing carbon black having an average particle diameter of 50 to 300 m.mu.. The magnetic recording medium has an excellent electromagnetic conversion characteristics and, particularly, a good preservation capability and can prevent a magnetic head from being abraded.
摘要翻译：磁记录介质包括通过将铁磁粉末分散在粘合剂中形成的至少一个磁性层，所述铁磁粉末包括选自Y或稀土金属元素中的至少一种稀土金属元素或镧系金属元素，并由针状铁磁合金粉末其sigma在120〜160emu / g的范围内，其平均纵轴长度在0.04〜0.2μm的范围内，其微晶尺寸在100〜300埃的范围内，所述磁性层包括研磨剂的平均粒径在0.03〜0.3μm的范围内，并且含有平均粒径为50〜300μm的碳黑。磁记录介质具有优异的电磁转换特性，特别是具有良好的保存能力并且可以防止磁头被磨损。

15. 发明授权

US06680088B2 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：US06680088B2
公开(公告)日：2004-01-20
申请号：US10151998
申请日：2002-05-22
申请人： Koji Naoe , Hiroyuki Kobayashi
发明人： Koji Naoe , Hiroyuki Kobayashi
IPC分类号： B05D300
CPC分类号： G11B5/842
摘要： A process for producing a magnetic recording medium is provided in which a magnetic layer including a ferromagnetic powder and a binder is provided on a non-magnetic flexible support. In the process, a magnetic liquid containing mainly a ferromagnetic powder and a binder, and an abrasive liquid paste including an abrasive and a binder are prepared separately, and the abrasive liquid paste is subsequently subjected to an ultrasonic dispersion treatment and then mixed with the magnetic liquid to prepare a magnetic coating solution for the magnetic layer.
摘要翻译：提供了一种用于制造磁记录介质的方法，其中在非磁性柔性支撑件上设置包括铁磁性粉末和粘合剂的磁性层。在此过程中，分别制备主要含有铁磁性粉末和粘合剂的磁性液体，以及包含研磨剂和粘合剂的研磨液体糊剂，然后对研磨液糊进行超声波分散处理，然后与磁性混合液体以制备用于磁性层的磁性涂层溶液。

16. 发明授权

US07901805B2 Magnetic recording medium and method of producing the same 有权
标题翻译：磁记录介质及其制造方法
公开(公告)号：US07901805B2
公开(公告)日：2011-03-08
申请号：US11729842
申请日：2007-03-30
申请人： Koji Naoe
发明人： Koji Naoe
IPC分类号： G11B5/706
CPC分类号： G11B5/70 , G11B5/70678 , G11B5/7085 , G11B5/714 , G11B5/842
摘要： A magnetic recording medium, which comprises: a nonmagnetic support; and a magnetic layer comprising a ferromagnetic powder and a binder, wherein an average surface roughness (Ra) at a center of a surface of the magnetic layer measured by using an atomic force microscope (AFM) is 2 nm or less, the maximum height (Rmax) thereof is 50 nm or less, and an arithmetic average of phase difference between a drive signal and a response signal of a probe measured with the atomic force microscope in a tapping mode is from 2 to 20°, and a method of producing the same.
摘要翻译：一种磁记录介质，包括：非磁性载体; 以及包含铁磁粉末和粘合剂的磁性层，其中通过使用原子力显微镜（AFM）测量的磁性层表面的中心处的平均表面粗糙度（Ra）为2nm以下，最大高度 Rmax）为50nm以下，并且利用原子力显微镜在攻丝模式中测量的探针的驱动信号与响应信号之间的相位差的算术平均值为2〜20°，相同。

17. 发明授权

US07635499B2 Method of manufacturing magnetic recording medium 有权
标题翻译：磁记录介质的制造方法
公开(公告)号：US07635499B2
公开(公告)日：2009-12-22
申请号：US11033973
申请日：2005-01-13
申请人： Koji Naoe
发明人： Koji Naoe
IPC分类号： B05D5/00
CPC分类号： G11B5/8412 , G11B5/7085 , G11B5/842
摘要： The present invention provides a method of manufacturing a magnetic recording medium that is made by applying a magnetic paint containing a ferromagnetic powder and a binder to a nonmagnetic support, wherein the magnetic paint contains a magnetic liquid, which contains the ferromagnetic powder and the binder, and a polishing material liquid, which contains a polishing material and a solvent, and wherein the magnetic liquid and the polishing material liquid are individually subjected to dispersion treatment, the magnetic liquid and the polishing material liquid are then mixed together, and after that, a mixed liquid of the magnetic liquid and the polishing material liquid are subjected to dispersion treatment by application of ultrasonic waves.
摘要翻译：本发明提供一种制造磁记录介质的方法，该磁记录介质通过将含有铁磁性粉末和粘合剂的磁性涂料涂覆在非磁性载体上而制成，其中磁性涂料含有含有铁磁粉末和粘合剂的磁性液体，以及包含研磨材料和溶剂的研磨材料液，其中分别对磁性液体和研磨材料液进行分散处理，然后将磁性液体和研磨材料液混合在一起，然后将通过施加超声波对磁性液体和研磨材料液的混合液进行分散处理。

18. 发明授权

US07172819B2 Method for producing magnetic recording medium 有权
标题翻译：磁记录介质的制造方法
公开(公告)号：US07172819B2
公开(公告)日：2007-02-06
申请号：US10601631
申请日：2003-06-24
申请人： Koji Naoe
发明人： Koji Naoe
IPC分类号： B05D3/00 , B05D5/12
CPC分类号： G11B5/842 , Y10T428/12146
摘要： In the method for producing a magnetic recording medium having a nonmagnetic substrate coated with a magnetic coating material containing a ferromagnetic powder and a binder, the magnetic coating material contains a liquid A constituted by the ferromagnetic powder and a solvent, and a solution B of the binder, and the liquid A and the solution B are mixed together by a thin-layer revolving-type fast stirring apparatus, and are thereafter subjected to dispersion processing. Thereby, coagulated particles of the ferromagnetic powder can be dispersed and the coagulation of the ferromagnetic powder can be prevented, thus making it possible to obtain a liquid of ferromagnetic powder with uniform adsorption of the binder. As a result, a magnetic coating material suitable for a low-noise high-density coating-type magnetic recording medium is obtained.
摘要翻译：在具有涂覆有含铁磁粉末和粘合剂的磁性涂层材料的非磁性基材的磁记录介质的制造方法中，磁性涂层材料含有由铁磁粉末和溶剂构成的液体A，粘合剂，液体A和溶液B通过薄层旋转式快速搅拌装置混合在一起，然后进行分散处理。由此，可以分散铁磁性粉末的凝结粒子，能够防止铁磁性粉末的凝结，从而可以获得粘合剂均匀吸附的铁磁性粉末液体。结果，得到适用于低噪声高密度涂布型磁记录介质的磁性涂料。

19. 发明申请

US20050265120A1 Ultrasonic dispersion device 审中-公开
标题翻译：超声波分散装置
公开(公告)号：US20050265120A1
公开(公告)日：2005-12-01
申请号：US11139486
申请日：2005-05-31
申请人： Koji Naoe
发明人： Koji Naoe
IPC分类号： B01F3/12 , B01F7/16 , B01F7/18 , B01F11/02 , B01F15/06
CPC分类号： B01F3/1221 , B01F3/1242 , B01F7/18 , B01F11/0225 , B01F11/0258 , B01F15/065 , B01F2215/0431 , B01F2215/0454 , B01F2215/0481
摘要： An ultrasonic dispersion device of a batch type comprising an ultrasonic oscillator and a liquid vessel, wherein an oscillation frequency of the ultrasonic oscillator is 20 kHz or less, the ultrasonic oscillator is secured to the liquid vessel, and the ultrasonic oscillator is able to come into contact with a treated liquid.
摘要翻译：一种包括超声波振荡器和液体容器的分批式超声波分散装置，其中超声波振荡器的振荡频率为20kHz以下，超声波振荡器固定在液体容器上，超声波振荡器能够进入与处理过的液体接触。

20. 发明申请

US20050153062A1 Method of manufacturing magnetic recording medium 有权
标题翻译：磁记录介质的制造方法
公开(公告)号：US20050153062A1
公开(公告)日：2005-07-14
申请号：US11033973
申请日：2005-01-13
申请人： Koji Naoe
发明人： Koji Naoe
IPC分类号： B05D5/12 , G11B5/708 , G11B5/84 , G11B5/842
CPC分类号： G11B5/8412 , G11B5/7085 , G11B5/842
摘要： The present invention provides a method of manufacturing a magnetic recording medium that is made by applying a magnetic paint containing a ferromagnetic powder and a binder to a nonmagnetic support, wherein the magnetic paint contains a magnetic liquid, which contains the ferromagnetic powder and the binder, and a polishing material liquid, which contains a polishing material and a solvent, and wherein the magnetic liquid and the polishing material liquid are individually subjected to dispersion treatment, the magnetic liquid and the polishing material liquid are then mixed together, and after that, a mixed liquid of the magnetic liquid and the polishing material liquid are subjected to dispersion treatment by application of ultrasonic waves.
摘要翻译：本发明提供一种制造磁记录介质的方法，该磁记录介质通过将含有铁磁性粉末和粘合剂的磁性涂料涂覆在非磁性载体上而制成，其中磁性涂料含有含有铁磁粉末和粘合剂的磁性液体，以及包含研磨材料和溶剂的研磨材料液，其中分别对磁性液体和研磨材料液进行分散处理，然后将磁性液体和研磨材料液混合在一起，然后将通过施加超声波对磁性液体和研磨材料液的混合液进行分散处理。

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