公开(公告)号：US06824867B2

公开(公告)日：2004-11-30

申请号：US10355058

申请日：2003-01-31

申请人： Kazuyuki Hayashi ,  Keisuke Iwasaki ,  Hiroko Morii ,  Mineko Ohsugi

发明人： Kazuyuki Hayashi ,  Keisuke Iwasaki ,  Hiroko Morii ,  Mineko Ohsugi

IPC分类号： G11B570

CPC分类号： B82Y30/00 ,  C01P2004/03 ,  C01P2004/10 ,  C01P2004/50 ,  C01P2004/51 ,  C01P2004/54 ,  C01P2004/62 ,  C01P2004/64 ,  C01P2004/86 ,  C01P2006/12 ,  C01P2006/40 ,  C01P2006/42 ,  C01P2006/90 ,  C09C1/22 ,  G11B5/738 ,  Y10T428/2991 ,  Y10T428/2993 ,  Y10T428/2995 ,  Y10T428/2998

摘要： Non-magnetic composite particles composed of non-magnetic core particles having an average particle size of 0.01 to 0.3 &mgr;m, and inorganic fine particles having an average particle size of 0.001 to 0.07 &mgr;m. The fine particles are present in an amount of 0.1 to 20% by weight based on the weight of the non-magnetic particles are on the surface of each non-magnetic particle, and are fixed or anchored on the surface of each non-magnetic particle through a silicon compound The non-magnetic composite particles have a high polishing effect and a high dispersibility, and are useful as a non-magnetic undercoat layer for a magnetic recording medium.

摘要翻译： 由平均粒径为0.01〜0.3μm的非磁性核粒子和平均粒径为0.001〜0.07μm的无机细颗粒构成的非磁性复合粒子。 相对于每个非磁性颗粒的表面上的非磁性颗粒的重量，细颗粒以0.1至20重量％的量存在，并且固定或锚定在每个非磁性颗粒的表面上 通过硅化合物非磁性复合颗粒具有高抛光效果和高分散性，并且可用作磁记录介质的非磁性底涂层。

公开(公告)号：US06667120B2

公开(公告)日：2003-12-23

申请号：US09957236

申请日：2001-09-21

申请人： Kazuyuki Hayashi ,  Keisuke Iwasaki ,  Hiroko Morii

发明人： Kazuyuki Hayashi ,  Keisuke Iwasaki ,  Hiroko Morii

IPC分类号： B32B516

CPC分类号： G11B5/738 ,  Y10T428/2995

摘要： A magnetic recording medium of the present invention comprises a non-magnetic base film; a non-magnetic undercoat layer formed on the non-magnetic base film, comprising non-magnetic acicular composite particles and a binder resin; and a magnetic recording layer formed on the non-magnetic undercoat layer, comprising magnetic particles and a binder resin, the non-magnetic acicular composite particles having an average major axis diameter of 0.01 to 0.3 &mgr;m, comprising: acicular hematite particles or acicular iron oxide hydroxide particles as non-magnetic core particles, a coating formed on surface of the non-magnetic core particles, comprising at least one organosilicon compound selected from the group consisting of: (1) organosilane compounds obtainable from alkoxysilane compounds, and (2) polysiloxanes or modified polysiloxanes, and a phthalocyanine-based pigment coat formed on the organosilicon compound coating layer, in an amount of from 1 to 100 parts by weight based on 100 parts by weight of the non-magnetic core particles.

摘要翻译： 本发明的磁记录介质包括非磁性基膜; 形成在非磁性基膜上的非磁性底涂层，包含非磁性针状复合颗粒和粘合剂树脂; 以及形成在非磁性底涂层上的磁记录层，其包含磁性颗粒和粘合剂树脂，所述非磁性针状复合颗粒的平均长轴直径为0.01至0.3μm，包括：针状赤铁矿颗粒或针状氧化铁 氢氧化物颗粒作为非磁性核颗粒，在非磁性核颗粒的表面上形成的涂层，包含至少一种选自以下的有机硅化合物：（1）由烷氧基硅烷化合物得到的有机硅烷化合物和（2）聚硅氧烷 或改性聚硅氧烷，以及在有机硅化合物涂层上形成的酞菁类颜料涂层，其量为基于100重量份的非磁性核颗粒为1至100重量份。

公开(公告)号：US06562532B2

公开(公告)日：2003-05-13

申请号：US10073043

申请日：2002-02-12

申请人： Kazuyuki Hayashi ,  Hiroko Morii ,  Yasuyuki Tanaka ,  Seiji Ishitani

发明人： Kazuyuki Hayashi ,  Hiroko Morii ,  Yasuyuki Tanaka ,  Seiji Ishitani

IPC分类号： G03G9083

CPC分类号： G03G9/0904 ,  G03G9/083 ,  G03G9/0833 ,  G03G9/0836 ,  G03G9/0839 ,  G03G9/08773 ,  G03G9/0902 ,  Y10T428/2995 ,  Y10T428/2998 ,  Y10T428/31663

摘要： Black magnetic toner comprising: a binder resin; and black magnetic composite particles having an average particle diameter of 0.06 to 1.0 &mgr;m comprising: magnetic iron oxide particles, a coating layer formed on the surface of the magnetic iron oxide particles, comprising at least one organosilicon compound selected from the group consisting of: (1) organosilane compounds obtainable from alkoxysilane compounds, and (2) polysiloxanes or modified polysiloxanes, and a single carbon black coat formed on the coating layer comprising the organosilicon compound, in an amount of 26 to 55 parts by weight based on 100 parts by weight of the magnetic iron oxide particles.

摘要翻译： 黑色磁性调色剂，包括：粘合剂树脂; 平均粒径为0.06〜1.0μm的黑色磁性复合粒子，其特征在于，含有磁性氧化铁粒子，形成在所述磁性氧化铁粒子的表面上的被覆层，所述被覆层包含至少一种选自下述的有机硅化合物：（1 ）由烷氧基硅烷化合物得到的有机硅烷化合物，和（2）聚硅氧烷或改性聚硅氧烷，以及在包含有机硅化合物的涂层上形成的单碳黑涂层，其量为26至55重量份，基于100重量份 磁性氧化铁颗粒。

公开(公告)号：US06379855B1

公开(公告)日：2002-04-30

申请号：US09636224

申请日：2000-08-10

申请人： Kazuyuki Hayashi ,  Hiroko Morii ,  Yasuyuki Tanaka ,  Seiji Ishitani

发明人： Kazuyuki Hayashi ,  Hiroko Morii ,  Yasuyuki Tanaka ,  Seiji Ishitani

IPC分类号： G03G9083

CPC分类号： C09K19/18 ,  C07C25/24 ,  G03G9/083 ,  G03G9/0833 ,  G03G9/0836 ,  G03G9/0839 ,  G03G9/08773 ,  G03G9/0902 ,  G03G9/0904 ,  Y10T428/2995 ,  Y10T428/2998

摘要： Black magnetic toner comprising: a binder resin; and black magnetic composite particles comprising: magnetic iron oxide particles having an average particle diameter of 0.055 to 0.95 &mgr;m, a coating layer formed on the surface of the magnetic iron oxide particles, comprising at least one organosilicon compound selected from the group consisting of: (1) organosilane compounds obtainable from alkoxysilane compounds, and (2) polysiloxanes or modified polysiloxanes, and a carbon black coat formed on the coating layer comprising the organosilicon compound, in an amount of 26 to 55 parts by weight based on 100 parts by weight of the magnetic iron oxide particles. Such a black magnetic toner can be free from being deteriorated in electric resistance due to the existence of the carbon black coat, and as a result, is suitable as a high-resistant or insulated magnetic toner.

摘要翻译： 黑色磁性调色剂，包括：粘合剂树脂; 所述黑色磁性复合粒子包含平均粒径为0.055〜0.95μm的磁性氧化铁粒子，形成在所述磁性氧化铁粒子的表面上的被覆层，所述被覆层包含至少一种选自以下的有机硅化合物：（1 ）由烷氧基硅烷化合物得到的有机硅烷化合物，和（2）聚硅氧烷或改性聚硅氧烷以及在包含有机硅化合物的涂层上形成的炭黑涂层，其量为26至55重量份，基于100重量份 磁性氧化铁颗粒。由于炭黑涂层的存在，这种黑色磁性调色剂可以不会劣化电阻，因此适合作为耐高温或绝缘的磁性调色剂。

公开(公告)号：US06287668B1

公开(公告)日：2001-09-11

申请号：US09523646

申请日：2000-03-10

申请人： Kazuyuki Hayashi ,  Keisuke Iwasaki ,  Yasuyuki Tanaka ,  Hiroko Morii

发明人： Kazuyuki Hayashi ,  Keisuke Iwasaki ,  Yasuyuki Tanaka ,  Hiroko Morii

IPC分类号： G11B5733

CPC分类号： B82Y30/00 ,  C01P2004/03 ,  C01P2004/04 ,  C01P2004/10 ,  C01P2004/20 ,  C01P2004/32 ,  C01P2004/38 ,  C01P2004/50 ,  C01P2004/51 ,  C01P2004/54 ,  C01P2004/62 ,  C01P2004/64 ,  C01P2004/80 ,  C01P2004/82 ,  C01P2004/84 ,  C01P2004/86 ,  C01P2006/12 ,  C01P2006/19 ,  C01P2006/22 ,  C01P2006/40 ,  C01P2006/42 ,  C01P2006/60 ,  C01P2006/62 ,  C01P2006/80 ,  C09C1/24 ,  C09C3/006 ,  C09C3/12 ,  G11B5/738 ,  Y10S428/90 ,  Y10T428/24355 ,  Y10T428/257 ,  Y10T428/2991 ,  Y10T428/2993 ,  Y10T428/2995

摘要： A magnetic recording medium of the present invention comprises: a non-magnetic base film; a non-magnetic undercoat layer formed on said non-magnetic base film, comprising a binder resin and non-magnetic acicular black iron-based composite particles; and a magnetic coating film comprising a binder resin and magnetic particles, said non-magnetic acicular black iron-based composite particles comprising: acicular hematite particles or acicular iron oxide hydroxide particles having an average major axis diameter of 0.02 to 0.30 &mgr;m; a coating layer formed on the surface of said acicular hematite particle or acicular iron oxide hydroxide particle, comprising a specific organosilicon compound; and a carbon black coat formed on said coating layer. Such a magnetic recording medium has a more smooth surface, a high strength and a lower light transmittance and a low electric resistance even at a small carbon black content.

摘要翻译： 本发明的磁记录介质包括：非磁性基膜;在所述非磁性基膜上形成的非磁性底涂层，包括粘合剂树脂和非磁性针状黑铁基复合颗粒; 以及包含粘合剂树脂和磁性颗粒的磁性涂膜，所述非磁性针状黑铁基复合颗粒包括：平均长轴直径为0.02至0.30μm的针状赤铁矿颗粒或针状铁氧化物氢氧化物颗粒; 形成在所述针状赤铁矿颗粒或针状铁氧化物氢氧化物颗粒的表面上的涂层，其包含特定的有机硅化合物; 以及形成在所述涂层上的炭黑涂层。即使在小的炭黑含量下，这种磁记录介质具有更光滑的表面，高强度和更低的透光率和低的电阻。

公开(公告)号：US6159592A

公开(公告)日：2000-12-12

申请号：US198390

申请日：1998-11-24

申请人： Kazuyuki Hayashi ,  Keisuke Iwasaki ,  Hiroko Morii

发明人： Kazuyuki Hayashi ,  Keisuke Iwasaki ,  Hiroko Morii

IPC分类号： G11B5/733

CPC分类号： G11B5/733 ,  Y10S428/90 ,  Y10T428/257 ,  Y10T428/2993

摘要： A magnetic recording medium comprising: a base film; a non-magnetic undercoat layer formed on said base film, comprising a binder resin and non-magnetic acicular particles containing iron as a main component, which particles comprise iron and zirconium of 0.05 to 30% by weight, calculated as Zr, based on the total weight of the particles, which is present within the particle; and a magnetic recording layer formed on said non-magnetic undercoat layer and comprising magnetic particles and a binder resin. Such a magnetic recording medium has a low light transmittance, an excellent smooth surface, a high mechanical strength and an excellent durability.

摘要翻译： 一种磁记录介质，包括：基膜; 形成在所述基底膜上的非磁性底涂层，其包含粘合剂树脂和以铁为主要成分的非磁性针状颗粒，该颗粒包含以Zr计为0.05至30重量％的铁和锆，基于 存在于颗粒内的颗粒的总重量; 以及形成在所述非磁性底涂层上并包含磁性颗粒和粘合剂树脂的磁记录层。 这种磁记录介质具有低的透光率，优异的光滑表面，高的机械强度和优异的耐久性。

公开(公告)号：US6124022A

公开(公告)日：2000-09-26

申请号：US199817

申请日：1998-11-25

申请人： Kazuyuki Hayashi ,  Yasuyuki Tanaka ,  Keisuke Iwasaki ,  Hiroko Morii

发明人： Kazuyuki Hayashi ,  Yasuyuki Tanaka ,  Keisuke Iwasaki ,  Hiroko Morii

IPC分类号： C01G49/06 ,  G11B5/733

CPC分类号： C01G49/06 ,  B82Y30/00 ,  G11B5/738 ,  C01P2002/52 ,  C01P2004/10 ,  C01P2004/51 ,  C01P2004/54 ,  C01P2004/62 ,  C01P2004/64 ,  C01P2006/12 ,  C01P2006/22 ,  C01P2006/42 ,  Y10S428/90 ,  Y10T428/24355 ,  Y10T428/257 ,  Y10T428/2982 ,  Y10T428/2991

摘要： Acicular hematite particles of the present invention comprise a geometrical standard deviation of major axis diameter of not more than 1.50, a geometrical standard deviation of minor axis diameter of not more than 1.35, a BET specific surface area of 35.9 to 150 m.sup.2 /g and an average major axis diameter of 0.004 to 0.295 .mu.m. Such acicular hematite particles are suitable as non-magnetic particles for a non-magnetic undercoat layer of a magnetic recording medium having a low light transmittance, an excellent smooth surface, a high mechanical strength and an excellent durability.

摘要翻译： 本发明的针状赤铁矿颗粒包括长轴直径的几何标准偏差不大于1.50，短轴直径的几何标准偏差不大于1.35，BET比表面积为35.9至150m 2 / g， 平均长轴直径为0.004〜0.295亩。 这种针状赤铁矿颗粒适用于具有低透光率，优异的光滑表面，高机械强度和优异的耐久性的磁记录介质的非磁性底涂层的非磁性颗粒。

公开(公告)号：US5750250A

公开(公告)日：1998-05-12

申请号：US733790

申请日：1996-10-18

申请人： Kazuyuki Hayashi ,  Keisuke Iwasaki ,  Yasuyuki Tanaka ,  Hiroko Morii

发明人： Kazuyuki Hayashi ,  Keisuke Iwasaki ,  Yasuyuki Tanaka ,  Hiroko Morii

IPC分类号： G11B5/738 ,  G11B5/708

CPC分类号： G11B5/738 ,  Y10S428/90 ,  Y10T428/256 ,  Y10T428/257 ,  Y10T428/265 ,  Y10T428/2982 ,  Y10T428/2991

摘要： Hematite particles for a non-magnetic undercoat layer for a magnetic recording medium, comprise: high-density acicular hematite particles having an average major axial diameter of not more than 0.3 .mu.m, a major axial diameter distribution in geometrical standard of not more than 1.50 and a BET specific surface area of not less than 35 m.sup.2 /g, showing a pH of not less than 8, and containing not more than 300 ppm of soluble sodium salt, calculated as Na, and not more than 150 ppm of soluble sulfate, calculated as SO.sub.4.

摘要翻译： 用于磁记录介质的非磁性底涂层的赤铁矿颗粒包括：平均主轴径不大于0.3μm的高密度针状赤铁矿颗粒，几何标准的主轴径分布不大于1.50 BET比表面积为35m 2 / g以上，pH值为8以上，含有不超过300ppm的可溶性钠盐，以Na计，不超过150ppm的可溶性硫酸盐， 以SO4计算。

公开(公告)号：US08323725B2

公开(公告)日：2012-12-04

申请号：US12816833

申请日：2010-06-16

申请人： Toru Maeda ,  Naoto Igarashi ,  Haruhisa Toyoda ,  Hirokazu Kugai ,  Kazuyuki Hayashi ,  Hiroko Morii ,  Seiji Ishitani

发明人： Toru Maeda ,  Naoto Igarashi ,  Haruhisa Toyoda ,  Hirokazu Kugai ,  Kazuyuki Hayashi ,  Hiroko Morii ,  Seiji Ishitani

IPC分类号： H01F1/20

CPC分类号： B22F1/02 ,  B22F2998/10 ,  H01F1/24 ,  H01F1/26 ,  H01F41/0246 ,  Y10T428/2991 ,  B22F3/02 ,  B22F3/24

摘要： A soft magnetic material is a soft magnetic material including a composite magnetic particle (30) having a metal magnetic particle (10) mainly composed of Fe and an insulating coating (20) covering metal magnetic particle (10), and insulating coating (20) contains an iron phosphate compound and an aluminum phosphate compound. The atomic ratio of Fe contained in a contact surface of insulating coating (20) in contact with metal magnetic particle (10) is larger than the atomic ratio of Fe contained in the surface of insulating coating (20). The atomic ratio of Al contained in the contact surface of insulating coating (20) in contact with metal magnetic particle (10) is smaller than the atomic ratio of Al contained in the surface of insulating coating (20). Thus, iron loss can be reduced.

摘要翻译： 软磁性材料是包括具有主要由Fe构成的金属磁性粒子（10）和覆盖金属磁性粒子（10）的绝缘涂层（20）的复合磁性体（30）和绝缘涂层（20）的软磁性材料， 含有磷酸铁化合物和磷酸铝化合物。 包含在与金属磁性颗粒（10）接触的绝缘涂层（20）的接触表面中的Fe的原子比大于绝缘涂层（20）表面中所含的Fe的原子比。 绝缘涂层（20）与金属磁性颗粒（10）接触的接触表面中所含的Al的原子比小于绝缘涂层（20）表面中的Al的原子比。 因此，可以减少铁损。

公开(公告)号：US20120164320A1

公开(公告)日：2012-06-28

申请号：US13409850

申请日：2012-03-01

申请人： Toru Maeda ,  Naoto Igarashi ,  Haruhisa Toyoda ,  Seiji Ishitani ,  Hiroko Morii ,  Kazuyuki Hayashi

发明人： Toru Maeda ,  Naoto Igarashi ,  Haruhisa Toyoda ,  Seiji Ishitani ,  Hiroko Morii ,  Kazuyuki Hayashi

IPC分类号： B05D5/12

CPC分类号： H01F1/24 ,  B22F1/02 ,  B22F2998/10 ,  C22C33/02 ,  H01F1/26 ,  H01F3/08 ,  H01F41/0246 ,  Y10T428/2991 ,  Y10T428/2998 ,  B22F1/007 ,  B22F3/02 ,  B22F3/10

摘要： A manufacturing method of a soft magnetic material has a step of preparing a metal magnetic particle containing iron as the main component, and a step of forming an insulating film surrounding the surface of the metal magnetic particle. The step of forming the insulating film includes a step of mixing and stirring the metal magnetic particle, aluminum alkoxide, silicon alkoxide, and phosphoric acid.

摘要翻译： 软磁性材料的制造方法具有制备以铁为主要成分的金属磁性体的工序，以及形成包围金属磁性体的表面的绝缘膜的工序。 形成绝缘膜的步骤包括混合和搅拌金属磁性颗粒，醇铝，硅烷氧化物和磷酸的步骤。