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1. 发明授权

US4110503A Magnetic recording members 失效
标题翻译：磁记录会员
公开(公告)号：US4110503A
公开(公告)日：1978-08-29
申请号：US747146
申请日：1976-12-03
申请人： Hiroshi Ogawa , Masashi Aonuma , Matsuaki Nakamura , Yasuo Tamai
发明人： Hiroshi Ogawa , Masashi Aonuma , Matsuaki Nakamura , Yasuo Tamai
IPC分类号： G11B5/708 , C09D5/23 , C09D7/12 , G11B5/71 , H01F10/02
CPC分类号： G11B5/71 , Y10S428/90 , Y10T428/31663
摘要： A magnetic recording member comprising a non-magnetic support having thereon a magnetic layer of a ferromagnetic powder dispersed in a binder, wherein the magnetic layer contains an organic silicone compound represented by the formula (I): ##STR1## wherein R and R', which may be the same or different, each is a saturated or unsaturated hydrocarbon group containing 7 to 21 carbon atoms, and n is an integer of 0 to 50.

2. 发明授权

US4154895A Magnetic recording member 失效
标题翻译：磁记录部件
公开(公告)号：US4154895A
公开(公告)日：1979-05-15
申请号：US862330
申请日：1977-12-20
申请人： Hiroshi Ogawa , Masashi Aonuma , Matsuaki Nakamura , Yasuo Tamai
发明人： Hiroshi Ogawa , Masashi Aonuma , Matsuaki Nakamura , Yasuo Tamai
IPC分类号： C09D5/23 , G11B5/702 , G11B5/706 , G11B5/708 , H01F10/02
CPC分类号： G11B5/70621 , G11B5/7021 , G11B5/70615 , Y10S428/90 , Y10T428/31565 , Y10T428/31609
摘要： In a magnetic recording member comprising a non-magnetic support having provided thereon a magnetic layer comprising finely divided ferromagnetic powders dispersed in a binder, in which the binder comprises about 10 to about 70 wt% of (a) a polyester-polyurethane resin and about 30 to about 90 wt% of (b) a synthetic non-drying oil modified alkyd resin and (c) a polyisocyanate, wherein the molar ratio of the isocyanate groups present in the polyisocyanate (c) to the hydroxyl groups present in the synthetic non-drying oil-modified alkyd resin (b) ranges from about 0.8:1 to about 2.0:1. The binder system in accordance with the present invention provides excellent magnetic properties, particularly improved squareness ratio and 5 MHz output. The binder system of the present invention also enables the use of finely divided ferromagnetic alloy powders, with excellent magnetic properties being maintained when magnetic recording members are produced therefrom.
摘要翻译：在包括非磁性载体的磁记录元件中，其上设置有包含分散在粘合剂中的细碎铁磁粉末的磁性层，其中粘合剂包含约10至约70重量％的（a）聚酯 - 聚氨酯树脂和约 30重量％至约90重量％的（b）合成非干性油改性醇酸树脂和（c）多异氰酸酯，其中存在于多异氰酸酯（c）中的异氰酸酯基与存在于合成非离子表面活性剂中的羟基的摩尔比干燥油改性醇酸树脂（b）的范围为约0.8:1至约2.0:1。根据本发明的粘结剂体系提供优异的磁性，特别是改进的矩形比和5MHz的输出。本发明的粘合剂体系还能够使用精细分散的铁磁性合金粉末，当由其制造磁性记录元件时，其具有优异的磁性能。

3. 发明授权

US4135016A Magnetic recording material 失效
公开(公告)号：US4135016A
公开(公告)日：1979-01-16
申请号：US776076
申请日：1977-03-09
申请人： Hiroshi Ogawa , Matsuaki Nakamura , Masashi Aonuma , Yasuo Tamai
发明人： Hiroshi Ogawa , Matsuaki Nakamura , Masashi Aonuma , Yasuo Tamai
IPC分类号： G11B5/708 , C09D5/23 , C09D7/12 , G11B5/71 , H01F10/02
CPC分类号： G11B5/71 , Y10S428/90 , Y10T428/257 , Y10T428/266 , Y10T428/31663
摘要： A magnetic recording material, which comprises a non-magnetic support having thereon a magnetic layer containing ferromagnetic powder dispersed in a binder, with the magnetic layer containing an organic silicone compound represented by the following general formula (I); ##STR1## wherein R, R' and R", which may be the same or different, each has 7 to 21 carbon atoms and represents an alkyl group, an alkenyl group, an alkadienyl group, an alkatrienyl group or an alkatetraenyl group, m represents an integer of 1 to 100; n represents an integer of 0 to 250; and m+n.ltoreq.300 and m.gtoreq.n/5.

4. 发明授权

US4009111A Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US4009111A
公开(公告)日：1977-02-22
申请号：US624017
申请日：1975-10-20
申请人： Yasuo Tamai , Masashi Aonuma , Matsuaki Nakamura , Hiroshi Agawa , Goro Akashi
发明人： Yasuo Tamai , Masashi Aonuma , Matsuaki Nakamura , Hiroshi Agawa , Goro Akashi
IPC分类号： B22F9/24 , C22C33/02 , G11B5/706 , B22F3/00 , C22C1/04 , H01F1/02
CPC分类号： G11B5/70621 , B22F9/24 , C22C33/0285 , G11B5/70615
摘要： A magnetic recording medium for high density recording comprising a support having thereon a magnetic recording layer comprising a ferromagnetic metal powder of the Fe-Co-Cr-B system and having a coercive force of about 700 to 1500 orsteds in the oriented direction of the magnetic substance and a residual magnetic flux density of about 1500 gauses or more, the residual magnetic flux density of which after storage for 160 hours under the conditions of a temperature of 60.degree. C and 90%RH is 85% or more of the initial value thereof before storage under these conditions in a binder. The magnetic recording medium is especially suitable for high density recording, having sufficient sensitivity and excellent resistance.
摘要翻译：一种用于高密度记录的磁记录介质，包括其上具有磁记录层的载体，所述磁记录层包含Fe-Co-Cr-B系统的铁磁性金属粉末，并且在磁性方向上具有约700至1500埃的矫顽力物质和剩余磁通密度约为1500高斯或以上，在60℃，90％RH的温度条件下保存160小时后的剩余磁通密度为初始值的85％以上在这些条件下在粘合剂中储存之前。磁记录介质特别适用于高密度记录，具有足够的灵敏度和优异的电阻。

5. 发明授权

US3943012A Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US3943012A
公开(公告)日：1976-03-09
申请号：US498337
申请日：1974-08-19
申请人： Yasuo Tamai , Masashi Aonuma , Matsuaki Nakamura , Hiroshi Agawa , Goro Akashi
发明人： Yasuo Tamai , Masashi Aonuma , Matsuaki Nakamura , Hiroshi Agawa , Goro Akashi
IPC分类号： C09D5/23 , C09D7/12 , G11B5/706 , H01F1/047 , H01F1/02
CPC分类号： G11B5/70615 , G11B5/70621
摘要： A magnetic recording medium for high density recording comprising a support having thereon a magnetic recording layer comprising a ferromagnetic metal powder of the Fe-Co-Cr-B system and having a coercive force of about 700 to 500 oersteds in the oriented direction of the magnetic substance and a residual magnetic flux density of about 1500 gausses or more, the residual magnetic flux density of which after storage for 160 hours under the conditions of a temperature of 60.degree.C and 90%RH is 85% or more of the initial value thereof before storage under these conditions in a binder. The magnetic recording medium is especially suitable for high density recording, having sufficient sensitivity and excellent resistance.
摘要翻译：一种用于高密度记录的磁记录介质，包括其上具有包含Fe-Co-Cr-B系统的铁磁金属粉末的磁记录层的支撑体，并且在磁性方向上具有约700至500奥斯特的矫顽力物质和约1500高斯或更高的剩余磁通密度，其在60℃和90％RH的温度条件下储存160小时后的剩余磁通密度为其初始值的85％或更多在这些条件下在粘合剂中储存之前。磁记录介质特别适用于高密度记录，具有足够的灵敏度和优异的电阻。

6. 发明授权

US4076861A Magnetic recording substance 失效
标题翻译：磁记录物质
公开(公告)号：US4076861A
公开(公告)日：1978-02-28
申请号：US646597
申请日：1976-01-05
申请人： Masahiko Furukawa , Hiroshi Ogawa , Masashi Aonuma , Yasuo Tamai , Hiromi Nakahara , Masaaki Igarashi
发明人： Masahiko Furukawa , Hiroshi Ogawa , Masashi Aonuma , Yasuo Tamai , Hiromi Nakahara , Masaaki Igarashi
IPC分类号： G11B5/706 , B22F9/24 , C09D5/23 , C09D7/12 , G11B5/842 , H01F1/06 , C22C1/00 , H01F1/02
CPC分类号： B22F9/24 , G11B5/842
摘要： This invention relates to a magnetic recording substance comprising a support and a magnetic layer containing a ferromagnetic metal powder of liquid phase reduction type in a binder, the ferromagnetic metal powder being obtained by mixing an aqueous slurry containing the ferromagnetic metal powder with an organic solvent capable of forming a minimum boiling azeotropic mixture with water and subjecting the mixture to distillation to remove the water.
摘要翻译：本发明涉及一种磁性记录物质，它包括一个载体和一个在粘合剂中含有液相还原型铁磁性金属粉末的磁性层，该铁磁性金属粉末是通过将含有强磁性金属粉末的含水浆料与一种有机溶剂混合而获得的与水形成最低沸点的共沸混合物并使混合物蒸馏除去水。

7. 发明授权

US4308311A Magnetic recording material 失效
标题翻译：磁记录材料
公开(公告)号：US4308311A
公开(公告)日：1981-12-29
申请号：US58709
申请日：1979-07-18
申请人： Hiroshi Ogawa , Masashi Aonuma , Yasuo Tamai
发明人： Hiroshi Ogawa , Masashi Aonuma , Yasuo Tamai
IPC分类号： C09D177/00 , G11B5/73 , G11B5/738 , G11B5/78
CPC分类号： G11B5/7305 , Y10S428/90 , Y10T428/24967 , Y10T428/265 , Y10T428/266 , Y10T428/31 , Y10T428/31728 , Y10T428/31732 , Y10T428/31743
摘要： A magnetic recording material, and, more particularly, a high density magnetic recording material is disclosed having an aromatic polyamide support in which the adhesion between the support and the magnetic recording layer is improved by an undercoating of an alcohol-soluble polyamide resin.
摘要翻译：公开了一种磁记录材料，更具体地说是一种具有芳族聚酰胺载体的高密度磁记录材料，其中通过醇溶性聚酰胺树脂的底涂层改善了载体和磁记录层之间的粘附性。

8. 发明授权

US4063000A Process for production of ferromagnetic powder 失效
标题翻译：铁磁粉生产工艺
公开(公告)号：US4063000A
公开(公告)日：1977-12-13
申请号：US614274
申请日：1975-09-17
申请人： Masashi Aonuma , Hiroshi Ogawa , Yasuo Tamai
发明人： Masashi Aonuma , Hiroshi Ogawa , Yasuo Tamai
IPC分类号： B22F9/24 , G11B5/706 , H01F1/06 , H01F1/02
CPC分类号： H01F1/061 , G11B5/70615 , G11B5/70621 , Y10S428/90 , Y10T428/2991
摘要： A process for producing a ferromagnetic metal powder comprising treating a ferromagnetic metal powder produced by a solution reduction process with an aqueous solution containing at least one anionic surface active agent.
摘要翻译：一种制造铁磁金属粉末的方法，包括用含有至少一种阴离子表面活性剂的水溶液处理由溶液还原法生产的铁磁性金属粉末。

9. 发明授权

US4253886A Corrosion resistant ferromagnetic metal powders and method of preparing the same 失效
标题翻译：耐腐蚀铁磁性金属粉末及其制备方法
公开(公告)号：US4253886A
公开(公告)日：1981-03-03
申请号：US822864
申请日：1977-08-08
申请人： Masashi Aonuma , Yasuo Tamai
发明人： Masashi Aonuma , Yasuo Tamai
IPC分类号： G11B5/712 , B22F1/02 , C09D5/23 , C09D7/12 , G11B5/706 , H01F1/06 , H01F1/09
CPC分类号： H01F1/061 , B22F1/02 , G11B5/70615 , G11B5/70621
摘要： Corrosion resistant ferromagnetic metal powders in which a volatile corrosion inhibitor is adsorbed on at least a part of the surface of ferromagnetic metal powders having an average particle size of 1000 A or less are disclosed. A method of preparing the corrosion resistant ferromagnetic metal powders is also disclosed.
摘要翻译：公开了其中挥发性腐蚀抑制剂吸附在平均粒度为1000A或更小的铁磁性金属粉末的至少一部分表面上的耐腐蚀铁磁性金属粉末。还公开了制备耐腐蚀铁磁性金属粉末的方法。

10. 发明授权

US4246316A Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US4246316A
公开(公告)日：1981-01-20
申请号：US887766
申请日：1978-03-17
申请人： Masashi Aonuma , Yasuo Tamai
发明人： Masashi Aonuma , Yasuo Tamai
IPC分类号： C09D5/23 , C09D7/12 , G11B5/716 , H01F1/06
CPC分类号： G11B5/716 , Y10S428/90 , Y10T428/12049 , Y10T428/12569 , Y10T428/257 , Y10T428/265 , Y10T428/2936
摘要： This invention relates to a magnetic recording medium comprising a non-magnetic support and magnetic layer provided thereon containing a ferromagnetic metal powder, the magnetic layer having a multilyaer structure consisting of a lower layer containing acicular grains obtained by dry process reduction and an upper layer containing chain-like grains obtained by wet process reduction, the upper layer being provided on the lower layer. This magnetic recording medium is particularly suitable for high density recording.
摘要翻译：本发明涉及一种包含非磁性载体和磁性层的磁记录介质，其中含有强磁性金属粉末，该磁性层具有多层结构，该多层结构由含有通过干法还原获得的针状颗粒的下层和含有通过湿法还原获得的链状颗粒，上层设置在下层上。该磁记录介质特别适用于高密度记录。

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