公开(公告)号：US20120003579A1

公开(公告)日：2012-01-05

申请号：US13161697

申请日：2011-06-16

申请人： Toru Iwata ,  Koji Aga

发明人： Toru Iwata ,  Koji Aga

IPC分类号： G03G9/107 ,  G03G9/113

CPC分类号： G03G9/107 ,  G03G9/1075 ,  G03G9/1133 ,  G03G9/1139

摘要： There are provided a ferrite carrier core material for an electrophotographic developer, which contain 10 to 30% by weight of Mn, 1.0 to 3.0% by weight of Mg, 0.3 to 1.5% by weight of Ti and 40 to 60% by weight of Fe, a ferrite carrier for an electrophotographic developer obtained by coating the ferrite core material, and an electrophotographic developer using the ferrite carrier.

摘要翻译： 提供了一种用于电子照相显影剂的铁氧体载体芯材，其含有10至30重量％的Mn，1.0至3.0重量％的Mg，0.3至1.5重量％的Ti和40至60重量％的Fe ，通过涂布铁氧体芯材获得的用于电子照相显影剂的铁氧体载体和使用该铁氧体载体的电子照相显影剂。

公开(公告)号：US08728699B2

公开(公告)日：2014-05-20

申请号：US12907246

申请日：2010-10-19

申请人： Toru Iwata ,  Koji Aga

发明人： Toru Iwata ,  Koji Aga

IPC分类号： G03G9/107 ,  G03G9/113

CPC分类号： G03G9/1075

摘要： A porous ferrite core material for an electrophotographic developer, the porous ferrite core material including Mg in a content of 0.3 to 3% by weight, Ti in a content of 0.4 to 3% by weight and Fe in a content of 60 to 70% by weight, and the porous ferrite core material having a pore volume of 0.04 to 0.16 ml/g, a peak pore size of 0.4 to 1.6 μm, a saturation magnetization of 40 to 80 Am2/kg, a remanent magnetization of less than 7 Am2/kg and a coercive force of less than 43 A/m; a resin-filled ferrite carrier for an electrophotographic developer obtained by filling a resin in the voids of the porous ferrite core material; and an electrophotographic developer using the ferrite carrier.

摘要翻译： 一种用于电子照相显影剂的多孔铁氧体芯材料，包含含量为0.3-3重量％的Mg的多孔铁氧体磁心材料，含量为0.4-3重量％的Ti，含量为60-70重量％的Fe 重量，孔体积为0.04〜0.16ml / g，峰值孔径为0.4〜1.6μm，饱和磁化强度为40〜80Am 2 / kg，剩余磁化强度小于7Am2 / kg，矫顽力小于43A / m; 通过在多孔铁素体芯材料的空隙中填充树脂而获得的用于电子照相显影剂的树脂填充铁氧体载体; 和使用该铁氧体载体的电子照相显影剂。

公开(公告)号：US20130171558A1

公开(公告)日：2013-07-04

申请号：US13823250

申请日：2011-08-29

申请人： Tomoyuki Suwa ,  Toru Iwata ,  Koji Aga

发明人： Tomoyuki Suwa ,  Toru Iwata ,  Koji Aga

IPC分类号： G03G9/113

CPC分类号： G03G9/1136 ,  G03G9/107 ,  G03G9/1075 ,  G03G9/113

摘要： It is an object of the present invention to provide a ferrite carrier core material and a ferrite carrier for an electrophotographic developer, which have an excellent charging property, hardly cause carrier scattering due to cracking and chipping of the core material, and have a prolonged life, and methods for manufacturing these, and an electrophotographic developer using the ferrite carrier. For this object, the ferrite carrier core material and a ferrite carrier for an electrophotographic developer, wherein (1) the ferrite composition contains 0.5 to 2.5% by weight of Sr, and the presence amount of Sr—Fe oxides satisfies a specific conditional expression, (2) the distribution in the number of the shape factor SF-2 is in a specific range, (3) the BET specific surface area is 0.15 to 0.30 m2/g, (4) the average particle diameter D50 is 20 to 35 μm, and (5) the magnetization is 50 to 65 Am2/kg.

摘要翻译： 本发明的目的是提供一种铁素体载体芯材和用于电子照相显影剂的铁氧体载体，其具有优良的充电性能，由于芯材的开裂和碎裂几乎不引起载体散射，并且具有延长的寿命 及其制造方法以及使用该铁氧体载体的电子照相显影剂。 对于该目的，铁氧体载体芯材和电子照相显影剂用铁氧体载体，（1）铁氧体组合物含有0.5〜2.5重量％的Sr，Sr-Fe氧化物的存在量满足特定条件式， （2）形状因子SF-2的数量分布在特定范围内，（3）BET比表面积为0.15〜0.30m2 / g，（4）平均粒径D50为20〜35μm ，（5）磁化强度为50〜65Am 2 / kg。

公开(公告)号：US08465898B2

公开(公告)日：2013-06-18

申请号：US13161697

申请日：2011-06-16

申请人： Toru Iwata ,  Koji Aga

发明人： Toru Iwata ,  Koji Aga

IPC分类号： G03G9/00

CPC分类号： G03G9/107 ,  G03G9/1075 ,  G03G9/1133 ,  G03G9/1139

摘要： There are provided a ferrite carrier core material for an electrophotographic developer, which contain 10 to 30% by weight of Mn, 1.0 to 3.0% by weight of Mg, 0.3 to 1.5% by weight of Ti and 40 to 60% by weight of Fe, a ferrite carrier for an electrophotographic developer obtained by coating the ferrite core material, and an electrophotographic developer using the ferrite carrier.

摘要翻译： 提供了一种用于电子照相显影剂的铁氧体载体芯材，其含有10至30重量％的Mn，1.0至3.0重量％的Mg，0.3至1.5重量％的Ti和40至60重量％的Fe ，通过涂布铁氧体芯材获得的用于电子照相显影剂的铁氧体载体和使用该铁氧体载体的电子照相显影剂。

公开(公告)号：US09081318B2

公开(公告)日：2015-07-14

申请号：US13823250

申请日：2011-08-29

申请人： Tomoyuki Suwa ,  Toru Iwata ,  Koji Aga

发明人： Tomoyuki Suwa ,  Toru Iwata ,  Koji Aga

IPC分类号： G03G9/113 ,  G03G9/107

CPC分类号： G03G9/1136 ,  G03G9/107 ,  G03G9/1075 ,  G03G9/113

摘要： It is an object of the present invention to provide a ferrite carrier core material and a ferrite carrier for an electrophotographic developer, which have an excellent charging property, hardly cause carrier scattering due to cracking and chipping of the core material, and have a prolonged life, and methods for manufacturing these, and an electrophotographic developer using the ferrite carrier. For this object, the ferrite carrier core material and a ferrite carrier for an electrophotographic developer, wherein (1) the ferrite composition contains 0.5 to 2.5% by weight of Sr, and the presence amount of Sr—Fe oxides satisfies a specific conditional expression, (2) the distribution in the number of the shape factor SF-2 is in a specific range, (3) the BET specific surface area is 0.15 to 0.30 m2/g, (4) the average particle diameter D50 is 20 to 35 μm, and (5) the magnetization is 50 to 65 Am2/kg.

摘要翻译： 本发明的目的是提供一种铁素体载体芯材和用于电子照相显影剂的铁氧体载体，其具有优良的充电性能，由于芯材的开裂和碎裂几乎不引起载体散射，并且具有延长的寿命 及其制造方法以及使用该铁氧体载体的电子照相显影剂。 对于该目的，铁氧体载体芯材和电子照相显影剂用铁氧体载体，（1）铁氧体组合物含有0.5〜2.5重量％的Sr，Sr-Fe氧化物的存在量满足特定条件式， （2）形状因子SF-2的数量分布在特定范围内，（3）BET比表面积为0.15〜0.30m 2 / g，（4）平均粒径D50为20〜35μm ，（5）磁化强度为50〜65Am 2 / kg。

公开(公告)号：US08895218B2

公开(公告)日：2014-11-25

申请号：US12685756

申请日：2010-01-12

申请人： Takashi Kojima ,  Toru Iwata ,  Koji Aga

发明人： Takashi Kojima ,  Toru Iwata ,  Koji Aga

IPC分类号： G03G9/00 ,  G03G9/107 ,  G03G9/113

CPC分类号： G03G9/1075 ,  G03G9/1131 ,  G03G9/1133 ,  G03G9/1136

摘要： Employment of a carrier core material for an electrophotographic developer containing 0.8 to 5% by weight of Mg, 0.1 to 1.5% by weight of Ti, 60 to 70% by weight of Fe and 0.2 to 2.5% by weight of Sr and having an amount of Sr dissolved with a pH4 standard solution of 80 to 1000 ppm, a carrier using the core material and a process for producing them, and an electrophotographic developer using the carrier.

摘要翻译： 使用含有0.8-5重量％Mg，0.1-1.5重量％Ti，60-70重量％Fe和0.2-2.5重量％Sr的电子照相显影剂的载体芯材，其量 的Sr用80〜1000ppm的pH4标准溶液溶解，使用芯材的载体及其制造方法，以及使用该载体的电子照相显影剂。

公开(公告)号：US08535867B2

公开(公告)日：2013-09-17

申请号：US13020455

申请日：2011-02-03

申请人： Tomoyuki Suwa ,  Toru Iwata ,  Koji Aga

发明人： Tomoyuki Suwa ,  Toru Iwata ,  Koji Aga

IPC分类号： G03G9/08

CPC分类号： G03G9/107 ,  G03G9/10

摘要： There is provided a ferrite core material for an electrophotographic developer, the ferrite core material having a ferrite particle composition represented by the formula (1) shown below, containing SrO replacing a part of (MnO) and/or (MgO) in the formula (1) shown below, and having a Cl concentration of 0.1 to 100 ppm, as measured by an elution method of the ferrite core material: (MnO)x(MgO)y(Fe2O3)z  (1) wherein x=35 to 45 mol %, y=5 to 15 mol %, z=40 to 60 mol %, and x+y+z=100 mol %.

摘要翻译： 提供一种用于电子照相显影剂的铁氧体芯材料，该铁氧体磁芯材料具有如下所示的式（1）所示的铁氧体颗粒组合物，其含有SrO，其代替式（1）中的（MnO）和/或（MgO）的一部分， 1），并且通过铁氧体磁心材料：（MnO）x（MgO）y（Fe 2 O 3）z（1）的洗脱方法测定的Cl浓度为0.1〜100ppm，其中x = 35〜45mol ％，y = 5〜15摩尔％，z = 40〜60摩尔％，x + y + z = 100摩尔％。

公开(公告)号：US07862975B2

公开(公告)日：2011-01-04

申请号：US12399164

申请日：2009-03-06

申请人： Yasunori Tabira ,  Koji Aga ,  Tomoyuki Suwa

发明人： Yasunori Tabira ,  Koji Aga ,  Tomoyuki Suwa

IPC分类号： G03G9/113 ,  G03G9/107

CPC分类号： G03G9/10 ,  G03G9/107 ,  G03G9/1075 ,  G03G9/1133 ,  G03G9/1134 ,  G03G9/1136

摘要： A carrier core material for an electrophotographic developer containing Li ferrite, maghemite, and Fe3O4, wherein a part thereof is substituted with Mn, a Li content is 1 to 2.5% by weight, a Mn content is 2 to 7.5% by weight, and a silicon content is 25 to 10,000 ppm, a compression breaking strength is 130 MPa or more, an SF-1 is 125 to 145, respective cumulative strengths of respective spinel crystal structure faces in X-ray diffraction satisfy a certain equation, a vacuum resistivity R500 across a 2 mm gap when a measurement voltage of 500 V is applied is 1×106 to 5×109 Ω, and a vacuum resistivity R1000 across a 6.5 mm gap when a measurement voltage of 1,000 V is applied is 5×107 to 1×1010 Ω.

摘要翻译： 用于含有Li铁氧体，磁赤铁矿和Fe3O4的电子照相显影剂的载体芯材料，其一部分被Mn取代，Li含量为1〜2.5重量％，Mn含量为2〜7.5重量％， 硅含量为25〜10000ppm，压缩断裂强度为130MPa以上，SF-1为125〜145，X射线衍射中各尖晶石晶体结构面的累积强度满足一定等式，真空电阻率R500 当施加500V的测量电压时为2mm间隙，当施加1000V的测量电压时，6.5mm间隙的真空电阻率R1000为5×10 7〜1 ×1010＆OHgr。

公开(公告)号：US20100111816A1

公开(公告)日：2010-05-06

申请号：US12532755

申请日：2008-02-21

申请人： Koji Aga ,  Hiromichi Kobayashi

发明人： Koji Aga ,  Hiromichi Kobayashi

IPC分类号： C01B31/14

CPC分类号： C09C3/041 ,  B01F17/0007 ,  C01P2006/10 ,  C01P2006/12 ,  C04B35/2625 ,  C04B35/2633 ,  C04B35/6263 ,  C04B35/6264 ,  C04B2235/3206 ,  C04B2235/3213 ,  C04B2235/3262 ,  C09C1/3009 ,  C09C1/3018 ,  C09C1/3623 ,  C09C1/48 ,  C09C1/56 ,  C09C3/04

摘要： The invention aims at providing an inorganic particle-containing emulsion which enables further size reduction of particles and can bring about a mono-disperse system and an enhanced yield and a manufacturing method of a particle by the use of the emulsion. This aim can be performed by a water in oil emulsion prepared by mixing an oil phase liquid and an water phase liquid which contains inorganic particles under agitation, in which the water phase liquid contains inorganic particle having a specific gravity of 1.5 to 11 g/cm3 and 0.5 to 5 wt % of agar-agar as calculated by taking the quantity of water contained in the water phase liquid as 100 wt % and the oil phase liquid contains hydrophobic particles as a dispersion stabilizer and in which the water phase liquid is present as the dispersion phase of the water in oil emulsion with the inorganic particles dispersed in the organic particle-containing emulsion; and a manufacturing method of a particle which contains both inorganic particle and agar-agar by the use of the emulsion.

摘要翻译： 本发明的目的在于提供一种能够进一步减小颗粒的无机颗粒乳液，并且可以通过使用该乳液产生单分散体系和增加产率以及颗粒的制造方法。 该目的可以通过在搅拌下混合油相液体和含有无机粒子的水相液体制备的油包水乳液进行，其中水相液体含有比重为1.5〜11g / cm 3的无机粒子 和0.5〜5重量％的琼脂，通过将水相液体中所含的水量取为100重量％计算，油相液体含有疏水性颗粒作为分散稳定剂，其中水相液体以 油包水乳液中的分散相与无机颗粒分散在含有机颗粒的乳液中; 以及通过使用乳液来同时含有无机粒子和琼脂的颗粒的制造方法。

公开(公告)号：US07880483B2

公开(公告)日：2011-02-01

申请号：US12057530

申请日：2008-03-28

申请人： Koji Aga ,  Hiromichi Kobayashi

发明人： Koji Aga ,  Hiromichi Kobayashi

IPC分类号： G01R27/08

CPC分类号： G01N27/026

摘要： An object of the present invention is to provide a quality inspection method for obtaining a specifying factor which can more reliably indicate powder characteristics of a core material for an electrophotographic ferrite carrier. The method includes measuring an impedance of the core material for the electrophotographic ferrite carrier to obtain a Cole-Cole plot in which a real number impedance is arranged in an X-axis and an imaginary number impedance is arranged in a Y-axis, and evaluating characteristics of particles of the core material for the electrophotographic ferrite carrier using the Cole-Cole plot.

摘要翻译： 本发明的目的是提供一种质量检查方法，用于获得更可靠地指示用于电子照相铁氧体载体的芯材的粉末特性的指定因子。 该方法包括测量用于电子照相铁氧体载体的芯材的阻抗，以获得其中实数阻抗被布置在X轴上并且虚数阻抗被布置在Y轴上的Cole-Cole图，并且评估 使用Cole-Cole图的电子照相铁氧体载体的芯材的颗粒的特性。