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公开(公告)号：US4525222A
公开(公告)日：1985-06-25
申请号：US609837
申请日：1984-05-14
Applicant: Takashi Meguro , Yasunobu Ogata , Yoshizo Sawada
Inventor： Takashi Meguro , Yasunobu Ogata , Yoshizo Sawada
CPC classification number: H01F1/15341 , C22C45/00
Abstract: A method of heat-treating an amorphous material as that the amorphous material has a high magnetic permeability, is disclosed in which an amorphous material having a Curie temperature T.sub.c higher than or equal to its crystallization temperature T.sub.x is held for a short time at a temperature T satisfying relations T.gtoreq.0.95 T.sub.c and T.gtoreq.T.sub.x.
Abstract translation: 公开了一种使非晶材料具有高导磁率的非晶材料的热处理方法，其中具有高于或等于其结晶温度Tx的居里温度Tc的非晶材料在温度下保持短时间 T满足关系T> / = 0.95 Tc和T> / = Tx。
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公开(公告)号：US4581080A
公开(公告)日：1986-04-08
申请号：US620001
申请日：1984-06-12
Applicant: Takashi Meguro , Yoshizo Sawada , Yasunobu Ogata
Inventor： Takashi Meguro , Yoshizo Sawada , Yasunobu Ogata
Abstract: An alloy material for magnetic head which ensures, when formed into a head, reduced distortion during writing and reduced level of noises such as sliding noise, while presenting high wear resistance.The alloy material is produced by preparing a molten alloy having a basic composition consisting essentially of Fe and 4 to 8 wt % of Si, and further containing one or more than two additive element or elements selected from a group consisting of elements belonging in periodic table to groups IIA, IVB, VB, VIB, VIIB, VIII, IB, IIB, IIIA, IVA and VA. The molten alloy is then quenched at a high cooling rate of at least 10.sup.3 .degree.C./sec to become a thin sheet having a thickness ranging between 0.02 mm and 0.3 mm. The sheet is then heat-treated in a non-oxidizing atmosphere at 600.degree. to 1200.degree. C. for 0.01 to 20 hours, so that the mean grain size of 0.2 mm or smaller can be obtained.
Abstract translation: 一种用于磁头的合金材料，当形成头部时，其在书写过程中减少失真并降低噪音，例如滑动噪音，同时具有高耐磨性。 该合金材料是通过制备具有基本上由Fe和4至8重量％Si组成的碱性组成的熔融合金制备的，并且还含有一种或多于两种选自元素周期表中的元素的添加元素或元素 至IIA，IVB，VB，VIB，VIIB，VIII，IB，IIB，IIIA，IVA和VA组。 然后将熔融合金以至少103℃/秒的高冷却速度骤冷，成为厚度范围在0.02mm至0.3mm之间的薄片。 然后将片材在600〜1200℃的非氧化性气氛中进行0.01〜20小时的热处理，得到0.2mm以下的平均粒径。
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公开(公告)号：USRE33022E
公开(公告)日：1989-08-15
申请号：US116883
申请日：1987-11-05
Applicant: Shinji Takayama , Yasuo Tsukuda , Kazuo Shiiki , Shigekazu Otomo , Mitsuhiro Kudo , Yasunobu Ogata , Yoshizo Sawada
Inventor： Shinji Takayama , Yasuo Tsukuda , Kazuo Shiiki , Shigekazu Otomo , Mitsuhiro Kudo , Yasunobu Ogata , Yoshizo Sawada
CPC classification number: C22C45/008 , H01F1/15316
Abstract: A ferromagnetic amorphous alloy having a composition represented by (Co.sub.x Ni.sub.y Fe.sub.z).sub.a M.sub.b G.sub.c, wherein M is Cr, Mo and/or W, G is Zr, Hf and/or Ti and x,y,z and a, b, c are selected to meet the conditions of x=1-y-z, 0.ltoreq.y.ltoreq.0.2, 0.ltoreq.z.ltoreq.0.7, a=1-b-c, 0.ltoreq.b.ltoreq.0.05 and 0.05.ltoreq.c.ltoreq.0.2 This amorphous alloy has a superior magnetic characteristic and a high thermal stability.
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公开(公告)号：US4668310A
公开(公告)日：1987-05-26
申请号：US474886
申请日：1983-03-14
Applicant: Mitsuhiro Kudo , Shinji Takayama , Yoshizo Sawada , Yasunobu Ogata
Inventor： Mitsuhiro Kudo , Shinji Takayama , Yoshizo Sawada , Yasunobu Ogata
CPC classification number: H01F1/153 , C22C45/008
Abstract: Amorphous alloys having high strength, high hardness, high crystallization temperature, high saturation magnetic induction, low coercive force, high magnetic permeability and particularly low deterioration of magnetic properties with lapse of time, have a composition formula ofT.sub.a X.sub.b Z.sub.c or T.sub.a' X.sub.b' Z.sub.c' M.sub.d,whereinT is at least one of Fe, Co and Ni,X is at least one of Zr, Ti, Hf and Y,Z is at least one of B, C, Si, Al, Ge, Bi, S and P,a is 70-98 atomic %,b is not more than 30 atomic %,c is not more than 15 atomic %,sum of a, b and c is 100 atomic %,M is at least one Mo, Cr, W, V, Nb, Ta, Cu, Mn, Zn, Sb, Sn, Be, Mg, Pd, Pt, Ru, Os, Rh, Ir, Ce, La, Pr, Nd, Sm, Eu, Gd, Tb and Dy,a' is 70-98 atomic %,b' is not more than 30 atomic %,c' is not more than 15 atomic %,d is not more than 20 atomic %, andsum of a', b', c' and d is 100 atomic %.
Abstract translation: 具有高强度，高硬度，高结晶温度，高饱和磁感应，低矫顽力，高导磁率和特别是低磁通性随时间劣化的非晶合金具有TaXbZc或Ta'Xb'Zc'的组成式， Md，其中T是Fe，Co和Ni中的至少一种，X是Zr，Ti，Hf和Y中的至少一种，Z是B，C，Si，Al，Ge，Bi，S和P中的至少一种 a为70-98原子％，b为30原子％以下，c为15原子％以下，a，b和c的和为100原子％，M为至少Mo，Cr，W， V，Nb，Ta，Cu，Mn，Zn，Sb，Sn，Be，Mg，Pd，Pt，Ru，Os，Rh，Ir，Ce，La，Pr，Nd，Sm，Eu，Gd，Tb和Dy， a'是70-98原子％，b'不大于30原子％，c'不大于15原子％，d不大于20原子％，a'，b'，c'和 d为100原子％。
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公开(公告)号：US4306908A
公开(公告)日：1981-12-22
申请号：US188746
申请日：1980-09-19
Applicant: Shinji Takayama , Yasuo Tsukuda , Kazuo Shiiki , Shigekazu Otomo , Mitsuhiro Kudo , Yasunobu Ogata , Yoshizo Sawada
Inventor： Shinji Takayama , Yasuo Tsukuda , Kazuo Shiiki , Shigekazu Otomo , Mitsuhiro Kudo , Yasunobu Ogata , Yoshizo Sawada
CPC classification number: C22C45/008 , H01F1/15316
Abstract: A ferromagnetic amorphous alloy having a composition represented by (Co.sub.x Ni.sub.y Fe.sub.z).sub.a M.sub.b G.sub.c, wherein M is Cr, Mo and/or W, G is Zr, Hf and/or Ti and x, y, z and a, b, c are selected to meet the conditions of x=1-y-z, 0.ltoreq.y.ltoreq.0.2, 0.ltoreq.z.ltoreq.0.7, a=1-b-c, 0.ltoreq.b.ltoreq.0.05 and 0.05.ltoreq.c.ltoreq.0.2 This amorphous alloy has a superior magnetic characteristic and a high thermal stability.
Abstract translation: 具有由（CoxNiyFez）aMbGc表示的组成的铁磁性非晶合金，其中M是Cr，Mo和/或W，G是Zr，Hf和/或Ti，x，y，z和a，b，c被选择以满足 x = 1-yz，0≤y≤0.2,0≤z≤0.7，a = 1-bc，0
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Patent Agency Ranking
6.发明授权Ferromagnetic particles and process for producing the same, and anisotropic magnet, bonded magnet and compacted magnet 有权铁磁颗粒及其制造方法，各向异性磁体，粘结磁体和压实磁体公开(公告)号：US09378876B2
公开(公告)日：2016-06-28
申请号：US13980703
申请日：2012-01-19
Applicant: Migaku Takahashi , Tomoyuki Ogawa , Yasunobu Ogata , Naoya Kobayashi , Chammika Ruwan Polwatta Gallage , Kaori Kohara
Inventor： Migaku Takahashi , Tomoyuki Ogawa , Yasunobu Ogata , Naoya Kobayashi , Chammika Ruwan Polwatta Gallage , Kaori Kohara
IPC: H01F1/00 , H01F1/06 , B22F1/02 , B22F9/22 , H01F1/01 , C22C29/16 , H01F41/02 , C01B21/06 , H01F1/08 , H01F41/00 , C22C21/00
CPC classification number: H01F1/01 , B22F1/02 , B22F9/22 , B22F2999/00 , C01B21/0622 , C01P2004/54 , C01P2004/61 , C01P2006/12 , C01P2006/42 , C22C21/00 , C22C29/16 , H01F1/065 , H01F1/083 , H01F1/086 , H01F41/00 , H01F41/0266 , B22F2201/013
Abstract: Ferromagnetic particles including an Fe16N2 compound phase in an amount of not less than 80% as measured by Mössbauer spectrum and each having an outer shell in which FeO is present in the form of a film having a thickness of not more than 5 nm. Ferromagnetic particles may be made by subjecting iron oxide or iron oxyhydroxide having an average major axis diameter of 40 to 5000 nm and an aspect ratio (major axis diameter/minor axis diameter) of 1 to 200 as a starting material to dispersing treatment to prepare aggregated particles; subjecting the iron compound particles passed through a mesh to hydrogen reducing treatment at a temperature of 160 to 420° C.; and then subjecting the resulting particles to nitridation treatment at a temperature of 130 to 170° C.
Abstract translation: 包含Fe6N2化合物相的铁磁性粒子，其量通过莫斯鲍尔光谱测定为不小于80％，并且各自具有其中FeO以厚度不大于5nm的膜的形式存在的外壳。 铁磁颗粒可以通过使平均长轴直径为40〜5000nm，长径比（长轴径/短轴直径）为1〜200的氧化铁或羟基氧化铁作为起始原料进行分散处理，制成凝集体 粒子; 使通过网的铁化合物颗粒在160〜420℃的温度下进行氢还原处理。 然后在130〜170℃的温度下对得到的粒子进行氮化处理。
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公开(公告)号：US07962079B2
公开(公告)日：2011-06-14
申请号：US12246633
申请日：2008-10-07
Applicant: Yasunobu Ogata
Inventor： Yasunobu Ogata
IPC: G03G15/20
CPC classification number: G03G15/2028
Abstract: A disclosed fixing device includes a fixing member configured to heat and melt a toner image to fix it onto a recording medium; a pressure member abutting the fixing member to form a nip into which the recording medium is fed; a separating member disposed on the downstream side in the moving direction of the fixing member in relation to the nip in a manner to oppose the fixing member, and configured to perform a separating operation to prevent the recording medium from winding around the fixing member; an electrically grounded frame supporting the fixing member, the pressure member and the separating member; and a conductive member inserted between a supporting portion of the frame and a supported portion of the separating member and having a higher electric resistance than the frame. The separating member and the frame are rendered electrically conductive to each other only via the conductive member.
Abstract translation: 所公开的定影装置包括：固定构件，被配置为加热和熔化调色剂图像以将其固定在记录介质上; 抵靠所述固定构件的压力构件以形成所述记录介质被供给到所述辊隙中的压区; 分离部件，以与所述固定部件相对的方式相对于所述辊隙在所述固定部件的移动方向的下游侧配置，并且被配置为执行分离操作以防止所述记录介质卷绕在所述固定部件周围; 支撑所述固定构件的电接地框架，所述压力构件和所述分隔构件; 以及导电构件，其插入在所述框架的支撑部分和所述分离构件的支撑部分之间并且具有比所述框架更高的电阻。 分离构件和框架仅通过导电构件彼此导电。
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公开(公告)号：US07169319B2
公开(公告)日：2007-01-30
申请号：US10963832
申请日：2004-10-14
Applicant: Takashi Takami , Yutaka Kubota , Yasunobu Ogata
Inventor： Takashi Takami , Yutaka Kubota , Yasunobu Ogata
CPC classification number: C04B35/2641 , C01G49/0018 , C01P2006/42 , C04B35/2633 , C04B35/62685 , C04B35/63 , C04B35/6303 , C04B35/632 , C04B2235/3208 , C04B2235/3213 , C04B2235/3215 , C04B2235/3217 , C04B2235/3224 , C04B2235/3225 , C04B2235/3227 , C04B2235/3229 , C04B2235/3232 , C04B2235/3239 , C04B2235/3241 , C04B2235/3262 , C04B2235/3272 , C04B2235/3274 , C04B2235/3275 , C04B2235/3277 , C04B2235/3279 , C04B2235/3281 , C04B2235/3284 , C04B2235/3418 , C04B2235/5436 , C04B2235/605 , C04B2235/656 , C04B2235/767 , C04B2235/85 , C04B2235/9615 , H01F1/086 , H01F1/11 , H01F41/0273
Abstract: A ferrite magnet having a basic composition represented by the following general formula: (A1−xRx)O.n[(Fe1−yMy)2O3] by atomic ratio, wherein A is Sr and/or Ba, R is at least one of rare earth elements including Y, M is at least one element selected from the group consisting of Co, Mn, Ni and Zn, and x, y and n are numbers meeting the conditions of 0.01≦x≦0.4, [x/(2.6n)]≦y≦[x/(1.6n)], and 5≦n≦6, and substantially having a magnetoplumbite-type crystal structure, is obtained by uniformly mixing a compound of Sr and/or Ba with an iron compound; calcining the resultant uniform mixture; adding a compound of the R element and/or the M element to the resultant calcined powder at a pulverization step thereof; and sintering the resultant mixture. The compound of the R element and/or the M element may be added at a percentage of more than 0 atomic % and 80 atomic % or less, on an element basis, at a mixing step before calcination.
Abstract translation: 具有由以下通式表示的碱性组成的铁氧体磁体：（A 1-x R x X）在[（Fe 1-y） 其中A是Sr和/或Ba，R是稀土元素中的至少一种，其中A是Sr和/或Ba，R是至少一种稀土元素 包括Y，M是选自Co，Mn，Ni和Zn中的至少一种元素，x，y和n是满足条件为0.01 <= x <= 0.4，[x /（2.6n） 通过将Sr和/或Ba的化合物与铁均匀混合，得到基本上具有磁铅矿型晶体结构的5 <= n <= 6，并且5 <= n < 复合; 煅烧所得的均匀混合物; 在其粉碎步骤中向所得煅烧粉末中加入R元素和/或M元素的化合物; 并烧结所得混合物。 R元素和/或M元素的化合物可以在煅烧之前的混合步骤中以元素为基准以大于0原子％和80原子％或更少的百分比加入。
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9.发明授权Bonded magnet, magnet roll, a ferrite powder used therefor and method for producing same 有权粘结磁体，磁性辊，用于其的铁氧体粉末及其制造方法公开(公告)号：US06284150B1
公开(公告)日：2001-09-04
申请号：US09381697
申请日：1999-09-23
Applicant: Yasunobu Ogata , Yutaka Kubota , Takashi Takami , Shuichi Shiina
Inventor： Yasunobu Ogata , Yutaka Kubota , Takashi Takami , Shuichi Shiina
IPC: H01F911
CPC classification number: C01G49/0054 , C01G49/0063 , C01G49/0072 , C01G51/006 , C01G53/006 , C01P2002/52 , C01P2004/45 , C01P2004/51 , C01P2004/61 , C01P2004/62 , C01P2006/10 , C01P2006/42 , C04B35/2633 , C04B35/2683 , C04B35/6261 , C04B35/6262 , C04B35/62625 , C04B35/6263 , C04B35/63 , C04B2235/3213 , C04B2235/3224 , C04B2235/3227 , C04B2235/3229 , C04B2235/3232 , C04B2235/3239 , C04B2235/3262 , C04B2235/3274 , C04B2235/3275 , C04B2235/3279 , C04B2235/3281 , C04B2235/3284 , C04B2235/5436 , C04B2235/5445 , C04B2235/6022 , C04B2235/72 , C04B2235/724 , C04B2235/726 , C04B2235/727 , C04B2235/767 , H01F1/11 , H01F1/113 , H01F7/0268 , H01F41/0273
Abstract: A ferrite powder for bonded magnets having a substantially magnetoplumbite-type crystal structure and an average diameter of 0.9-2 &mgr;m, the ferrite powder having a basic composition represented by the following general formula: (A1-xRxO.n[Fe1-yMy)2O3] by atomic ratio, wherein A is Sr and/or Ba; R is at least one of rare earth elements including Y, La being indispensable; M is at least one element selected from the group consisting of Co, Mn, Ni and Zn; and x, y and n are numbers meeting the conditions of 0.01≦x≦0.4, [x/(2.6n)]≦y≦[x/(1.6n)], and 5≦n≦6, (Si+Ca) being 0.2 weight % or less, and (Al+Cr) being 0.13 weight % or less, can be produced by mixing iron oxide containing 0.06 weight % or less of (Si+Ca) and 0.1 weight % or less of (Al+Cr) with compounds of A, R and M elements, calcining the resultant mixture for ferritization, pulverizing the resultant magnetically isotropic ferrite and then heat-treating the pulverized ferrite at 750-950° C. for 0.5-3 hours in the air.
Abstract translation: 一种铁氧体粉末，具有基本上为磁铅石型晶体结构，平均直径为0.9〜2μm的铁氧体粉末，所述铁氧体粉末具有以下通式表示的碱性组成：（A1-xRxO.n [Fe1-yMy）2O3 ]其中A是Sr和/或Ba; R是包括Y，La不可缺少的稀土元素中的至少一种; M是选自Co，Mn，Ni和Zn中的至少一种元素; 并且x，y和n是满足0.01 <= x <= 0.4，[x /（2.6n）] <= y <= [x /（1.6n）]和5 <= n <= 6 ，（Si + Ca）为0.2重量％以下，（Al + Cr）为0.13重量％以下，可以通过混合含有0.06重量％以下的（Si + Ca）和0.1重量％的氧化铁或 将Al（Al + Cr）与A，R和M元素的化合物相比较，煅烧所得的铁素体混合物，粉碎所得的磁各向同性铁素体，然后在750-950℃下热处理粉碎的铁素体0.5-3小时 在空中。
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公开(公告)号：US5538657A
公开(公告)日：1996-07-23
申请号：US288903
申请日：1994-08-11
Applicant: Yasunobu Ogata , Mikio Yamamoto
Inventor： Yasunobu Ogata , Mikio Yamamoto
IPC: C01G49/00 , C04B35/26 , C04B35/622 , C04B35/626 , H01F1/11 , H01F41/02
CPC classification number: C04B35/2683 , C04B35/626
Abstract: A method of producing a ferrite magnet which comprises the steps of wet-grinding ferrite powder contained in a slurry to prepare a slurry of fine ferrite particles; concentrating the slurry of fine ferrite particles to have a predetermined solid content; kneading the concentrated slurry to disperse the fine ferrite particles; wet-compacting the kneaded slurry to form a green body; and sintering the green body to obtain the ferrite magnet. The ferrite powder having the following composition:MO.multidot.nFe.sub.2 O.sub.3wherein M is at least one element selected from the group consisting of Ba, Sr and Pb, and n is the number from 5 to 6. By employing the kneading process prior to the wet-compacting process, a high degree of particle orientation is achieved during the wet compacting in a magnetic field, enabling to produce a ferrite magnet having high magnetic properties.
Abstract translation: 一种铁素体磁体的制造方法，其特征在于，包括以下步骤：将包含在浆料中的铁素体粉末进行湿法研磨，制备细小铁氧体颗粒的浆料; 浓缩细铁氧体颗粒的浆料以具有预定的固体含量; 捏合浓缩浆料以分散细铁素体颗粒; 湿捏合捏合的浆料以形成生坯; 并烧结生坯以获得铁氧体磁体。 具有以下组成的铁氧体粉末：MOxnFe2O3，其中M是选自Ba，Sr和Pb中的至少一种元素，n是5至6的数。通过在湿式压实方法之前采用捏合方法 在磁场中的湿式压实中实现了高度的粒子取向，从而能够制造具有高磁特性的铁氧体磁体。
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