公开(公告)号：US5670288A

公开(公告)日：1997-09-23

申请号：US599845

申请日：1996-02-12

申请人： Kenji Okado ,  Toshiyuki Ugai ,  Ryoichi Fujita ,  Makoto Kanbayashi ,  Tsuyoshi Takiguchi ,  Yasuhiro Ichikawa ,  Wakashi Iida

发明人： Kenji Okado ,  Toshiyuki Ugai ,  Ryoichi Fujita ,  Makoto Kanbayashi ,  Tsuyoshi Takiguchi ,  Yasuhiro Ichikawa ,  Wakashi Iida

IPC分类号： G03G9/09 ,  G03G9/097 ,  G03G9/10 ,  G03G9/107 ,  G03G13/09

CPC分类号： G03G9/10 ,  G03G9/0918 ,  G03G9/09708 ,  G03G9/09716 ,  G03G9/107

摘要： A carrier for electrophotography has carrier particles. The carrier has a 50% average particle diameter (D.sub.50) of from 15 .mu.m to 45 .mu.m and contains from 1% to 20% of carrier particles with a size smaller than 22 .mu.m, not more than 3% of carrier particles with a size smaller than 16 .mu.m, from 2% to 15% of carrier particles with a size of 62 .mu.m or larger, and not more than 2% of carrier particles with a size of 88 .mu.m or larger. The carrier has a specific surface area S.sub.1 as measured by an air-permeability method and a specific surface area S.sub.2 as calculated by the following expression: S.sub.2 =(6/.rho..multidot.D.sub.50).times.10.sup.4 wherein .rho. is a specific gravity of carrier; satisfying the following condition: 1.2 .ltoreq.S.sub.1 /S.sub.2 .ltoreq.2.0.

摘要翻译： 电子照相用载体具有载体颗粒。 载体具有15μm至45μm的50％平均粒径（D50），并且含有1％至20％的尺寸小于22μm的载体颗粒，不超过载体颗粒的3％ 尺寸小于16μm，尺寸为62μm或更大的载体颗粒的2％至15％，以及不大于2％的尺寸为88μm或更大的载体颗粒。 载体具有通过透气度测定的比表面积S1和通过下式计算的比表面积S2：S2 =（6 / rho×D50）×104其中rho是载体的比重; 满足以下条件：1.2

公开(公告)号：US5512402A

公开(公告)日：1996-04-30

申请号：US246146

申请日：1994-05-19

申请人： Kenji Okado ,  Toshiyuki Ugai ,  Ryoichi Fujita ,  Makoto Kanbayashi ,  Tsuyoshi Takiguchi ,  Yasuhiro Ichikawa ,  Wakashi Iida

发明人： Kenji Okado ,  Toshiyuki Ugai ,  Ryoichi Fujita ,  Makoto Kanbayashi ,  Tsuyoshi Takiguchi ,  Yasuhiro Ichikawa ,  Wakashi Iida

IPC分类号： G03G9/09 ,  G03G9/097 ,  G03G9/10 ,  G03G9/107 ,  G03G9/08

CPC分类号： G03G9/10 ,  G03G9/0918 ,  G03G9/09708 ,  G03G9/09716 ,  G03G9/107

摘要： A carrier for electrophotography has carrier particles. The carrier has a 50% average particle diameter (D.sub.50) of from 15 .mu.m to 45 .mu.m and contains from 1% to 20% of carrier particles with a size smaller than 22 .mu.m, not more than 3% of carrier particles with a size smaller than 16 .mu.m, from 2% to 15% of carrier particles with a size of 62 .mu.m or larger, and not more than 2% of carrier particles with a size of 88 .mu.m or larger. The carrier has a specific surface area S.sub.1 as measured by an air-permeability method and a specific surface area S.sub.2 as calculated by the following expression:S.sub.2 =(6/.rho..D.sub.50).times.10.sup.4wherein .rho. is a specific gravity of carrier; satisfying the following condition:1.2.ltoreq.S.sub.1 /S.sub.2 .ltoreq.2.0.

摘要翻译： 电子照相用载体具有载体颗粒。 载体具有15μm至45μm的50％平均粒径（D50），并且含有1％至20％的尺寸小于22μm的载体颗粒，不超过载体颗粒的3％ 尺寸小于16μm，尺寸为62μm或更大的载体颗粒的2％至15％，以及不大于2％的尺寸为88μm或更大的载体颗粒。 载体具有通过透气度法测定的比表面积S1和通过下式计算的比表面积S2：S2 =（6 / rho.D50）×104其中rho是载体的比重; 满足以下条件：1.2

公开(公告)号：US06346356B1

公开(公告)日：2002-02-12

申请号：US09572642

申请日：2000-05-17

申请人： Manabu Ohno ,  Toshiyuki Ugai ,  Ryoichi Fujita ,  Shinya Yachi ,  Yasushi Katsuta ,  Kenichi Nakayama

发明人： Manabu Ohno ,  Toshiyuki Ugai ,  Ryoichi Fujita ,  Shinya Yachi ,  Yasushi Katsuta ,  Kenichi Nakayama

IPC分类号： G03G9097

CPC分类号： G03G9/09733 ,  G03G9/0806 ,  G03G9/0821 ,  G03G9/0825 ,  G03G9/0827 ,  G03G9/097

摘要： A toner is comprised of toner particles containing at least a binder resin, a colorant, a wax component and an oxycarboxylic acid. The toner satisfies the following conditions: 1.05≦A/B≦3.00, and 0.15≦B≦3.50 wherein A (mg) is a weight of oxycarboxylic acid extracted with methanol from 1 g of the toner, and B (mg) is a weight of oxycarboxylic acid extracted with an aqueous 0.1 mol/liter sodium hydroxide solution from 1 g of the toner.

摘要翻译： 调色剂由至少含有粘合剂树脂，着色剂，蜡组分和羟基羧酸的调色剂颗粒构成。 调色剂满足以下条件：A（mg）是由1g调色剂用甲醇提取的羟基羧酸的重量，B（mg）是用0.1mol / l氢氧化钠水溶液提取的羟基羧酸的重量 从1克调色剂。

公开(公告)号：US5856055A

公开(公告)日：1999-01-05

申请号：US050467

申请日：1998-03-31

申请人： Toshiyuki Ugai ,  Kazumi Yoshizaki

发明人： Toshiyuki Ugai ,  Kazumi Yoshizaki

IPC分类号： G03G9/08 ,  G03G9/09 ,  G03G9/097

CPC分类号： G03G9/091 ,  G03G9/0806 ,  G03G9/09783

摘要： An electrophotographic black toner containing carbon black in a good dispersion state as well as a combined charge control agent system including a specific azo iron metal compound of formula (1) shown below and an oxycarboxylic acid metal compound is produced through polymerization in an aqueous system. The combined charge control agent system shows an effects of synergistically improving the chargeability of spherical polymerized toner particles. The azo iron metal compound improves the dispersion of the carbon black in the toner particles. ##STR1## wherein the denotations of R.sub.1 -R.sub.6, n, n' and A.sup..sym. are omitted.

摘要翻译： 通过在水性体系中聚合制备含有良好分散状态的炭黑的电子黑调色剂以及包含下述式（1）的特定偶氮铁金属化合物和羟基羧酸金属化合物的组合电荷控制剂体系。 组合的电荷控制剂体系显示了协同地改善球形聚合调色剂颗粒的带电性的效果。 偶氮铁金属化合物改善了炭黑在调色剂颗粒中的分散性。 n，n'和A（+）。

公开(公告)号：US6054244A

公开(公告)日：2000-04-25

申请号：US219750

申请日：1998-12-23

申请人： Kazunori Kato ,  Toshiyuki Ugai ,  Satoshi Yasuda

发明人： Kazunori Kato ,  Toshiyuki Ugai ,  Satoshi Yasuda

IPC分类号： G03G9/08 ,  G03G9/087 ,  C08L67/00

CPC分类号： G03G9/0806

摘要： A process for producing a toner comprises the steps of: adjusting to 4.0 to 6.0 the pH of an aqueous medium containing a calcium phosphates obtained by mixing an aqueous phosphate solution with an aqueous calcium salt solution; dispersing in the aqueous medium a polymerizable monomer composition having at least a polymerizable monomer, a colorant, a polar polymer or polar copolymer having a carboxyl group, and a polymerization initiator to form particles of the polymerizable monomer composition; in the aqueous medium, polymerizing the polymerizable monomer contained in the particles to form toner particles; and adjusting the pH of the aqueous medium to 1.0 to 3.0 to dissolve the calcium phosphate, followed by separating the toner particles from the aqueous medium. The circularity of the toner obtained is not less than 0.970 and less than 1.000 as measured with a flow-type particle image analyzer (FIPA).

摘要翻译： 调色剂的制造方法包括以下步骤：通过将磷酸水溶液与钙盐水溶液混合而得到的含有磷酸钙的水性介质的pH调节至4.0〜6.0; 在水性介质中分散具有至少可聚合单体，着色剂，极性聚合物或具有羧基的极性共聚物的可聚合单体组合物和聚合引发剂以形成可聚合单体组合物的颗粒; 在水性介质中聚合包含在颗粒中的可聚合单体以形成调色剂颗粒; 并将水性介质的pH调节至1.0至3.0以溶解磷酸钙，然后从水性介质中分离调色剂颗粒。 所得到的调色剂的圆度不小于流动型颗粒图像分析仪（FIPA）测得的0.970和小于1.000。

公开(公告)号：US6015647A

公开(公告)日：2000-01-18

申请号：US289944

申请日：1999-04-13

申请人： Toshiyuki Ugai ,  Manabu Ohno

发明人： Toshiyuki Ugai ,  Manabu Ohno

IPC分类号： G03G9/087 ,  G03G9/097 ,  G03G13/22

CPC分类号： G03G9/09733 ,  G03G9/08782

摘要： A toner for developing an electrostatic image is composed of toner particles containing at least a binder resin, a colorant and a wax composition. The wax composition comprises an ester wax (1) having a long-chain alkyl group, and a wax (2). The wax (2) shows a maximum heat-absorption peak in a range of 40-130.degree. C. on temperature increase on a DSC (differential scanning calorimeter) curve, and gives a .sup.13 C-NMR (nuclear magnetic resonance) spectrum showing a total peak area S in a range of 0-50 ppm, a total peak area S1 in a range of 36-42 ppm, and a total peak area S2 in a range of 10-17 ppm, satisfying: 1.0.ltoreq.(S1/S).times.100.ltoreq.10, 1.5.ltoreq.(S2/S).times.100.ltoreq.15, and S.sub.1

摘要翻译： 用于显影静电图像的调色剂由至少含有粘合剂树脂，着色剂和蜡组合物的调色剂颗粒组成。 蜡组合物包含具有长链烷基的酯蜡（1）和蜡（2）。 蜡（2）在DSC（差示扫描量热计）曲线上的温度升高时显示在40-130℃的范围内的最大吸热峰，并得到显示总共的13C-NMR（核磁共振）光谱 峰面积S在0-50ppm的范围内，总峰面积S1在36-42ppm的范围内，总峰面积S2在10-17ppm的范围内，满足：1.0 <（S1 / S）×100 和S1 。

公开(公告)号：US5989770A

公开(公告)日：1999-11-23

申请号：US238723

申请日：1999-01-28

申请人： Toshiyuki Ugai ,  Satoshi Yasuda ,  Kazunori Kato

发明人： Toshiyuki Ugai ,  Satoshi Yasuda ,  Kazunori Kato

IPC分类号： G03G9/08 ,  G03G9/087 ,  G03G9/093 ,  G03G9/097

CPC分类号： G03G9/0806 ,  G03G9/08755 ,  G03G9/093 ,  G03G9/0975 ,  G03G9/09783

摘要： A process for producing a toner for developing an electrostatic latent image. The process has the steps of dispersing in an aqueous medium having a pH of from 4.5 to 8.5 a polymerizable monomer composition containing at least a polymerizable vinyl monomer, a colorant, an organic metal compound, an aromatic carboxylic acid, a polyester resin having an acid value of from 5 mg.multidot.KOH/g to 50 mg.multidot.KOH/g, and a polymerization initiator, to form particles of the polymerizable monomer composition in the aqueous medium, and polymerizing the polymerizable vinyl monomer in the particles of the polymerizable monomer composition.

摘要翻译： 一种静电潜像显影用调色剂的制造方法。 该方法具有以下步骤：将pH至4.5至8.5的水性介质分散在至少含有可聚合乙烯基单体，着色剂，有机金属化合物，芳族羧酸，具有酸的聚酯树脂的可聚合单体组合物 值为5mgxKOH / g至50mgxKOH / g，以及聚合引发剂，以在水性介质中形成可聚合单体组合物的颗粒，并使可聚合单体组合物的颗粒中的可聚合乙烯基单体聚合。

公开(公告)号：US06835521B2

公开(公告)日：2004-12-28

申请号：US10349968

申请日：2003-01-24

申请人： Yoshinori Tsuji ,  Toshiyuki Ugai ,  Akira Hashimoto ,  Hidekazu Fumita

发明人： Yoshinori Tsuji ,  Toshiyuki Ugai ,  Akira Hashimoto ,  Hidekazu Fumita

IPC分类号： G03G908

CPC分类号： G03G9/0806 ,  G03G7/0033 ,  G03G9/0815

摘要： To provide a process for producing toner particles in a good efficiency which have less residue of monomers and less other organic volatile components, the process has a polymerization step of polymerizing a polymerizable monomer composition containing at least a polymerizable monomer, in a vessel holding therein an aqueous medium, wherein a high-temperature saturated steam with a temperature higher than 100° C. is introduced into the aqueous medium held in the vessel, at the latter half of polymerization or after the polymerization has been completed, to remove at least organic volatile components from toner particles having at least a binder resin and a colorant.

摘要翻译： 为了提供一种生产具有较少单体剩余量和少量其它有机挥发组分的高效率调色剂颗粒的方法，该方法具有聚合步骤，使含有至少一种可聚合单体的可聚合单体组合物在其中保持在其中 水性介质，其中将温度高于100℃的高温饱和蒸汽引入保持在容器中的水性介质中，在聚合的后半部分或聚合完成后，至少除去有机挥发物 具有至少粘合剂树脂和着色剂的调色剂颗粒的组分。

公开(公告)号：US06285848B1

公开(公告)日：2001-09-04

申请号：US09092935

申请日：1998-06-08

申请人： Shuichi Aita ,  Kenji Okado ,  Toshiyuki Ugai ,  Ryoichi Fujita ,  Fumihiro Arahira ,  Kiyoshi Mizoe ,  Yoshifumi Hano

发明人： Shuichi Aita ,  Kenji Okado ,  Toshiyuki Ugai ,  Ryoichi Fujita ,  Fumihiro Arahira ,  Kiyoshi Mizoe ,  Yoshifumi Hano

IPC分类号： G03G1502

CPC分类号： G03G15/0241 ,  G03G21/0064 ,  G03G2215/022

摘要： An electrophotographic apparatus includes an electrophotographic photosensitive member, and (i) a charger, (ii) an imagewise exposure device, (iii) a developing device and (iv) a transfer device, disposed in this order opposite to the photosensitive member. The charger includes a charging member including magnetic particles disposed in contact with the photosensitive member so as to charge the photosensitive member based on a voltage received thereby. The magnetic particles are surface-coated with a coupling agent having a linear alkyl group having a least 6 carbon atoms. The developing device also functions to recover residual toner remaining on the photosensitive member processing by the transfer device and the charger. Because of the coating with such a specific coupling agent, the charging magnetic particles can exhibit good triboelectric changeability for the transfer residual toner for a long period.

摘要翻译： 电子照相设备包括电子照相感光构件，以及（i）充电器，（ii）成像曝光装置，（iii）以与感光构件相对的顺序设置的显影装置和（iv）转印装置。 充电器包括充电构件，其包括与感光构件接触设置的磁性颗粒，以便基于由此接收的电压对感光构件充电。 磁性颗粒用具有至少6个碳原子的直链烷基的偶联剂进行表面涂覆。 显影装置还用于恢复由转印装置和充电器处理的感光构件上残留的残留调色剂。 由于用这种特殊的偶联剂进行涂布，所以带电磁性颗粒可以长时间显示转印残留调色剂的良好的摩擦带电性。

公开(公告)号：US6030737A

公开(公告)日：2000-02-29

申请号：US969064

申请日：1997-11-12

申请人： Toshiyuki Ugai ,  Kenji Okado

发明人： Toshiyuki Ugai ,  Kenji Okado

IPC分类号： G03G9/08 ,  G03G9/087 ,  G03G9/09 ,  G03G9/097

CPC分类号： G03G9/0904 ,  G03G9/091

摘要： A non-magnetic toner for developing an electrostatic image has non-magnetic toner particles produced by polymerizing in an aqueous medium a polymerizable monomer composition containing at least a polymerizable monomer, a carbon black and an azo type iron compound. The carbon black has a DPB oil absorption of from 110 ml/100 g to 200 ml/100 g, a specific surface area of 100 m.sup.2 /g or below as measured by nitrogen adsorption, a volatile component of 2% or less and an average primary particle diameter of from 20 m.mu. to 60 m.mu., and the azo type iron compound is a compound represented by the following Formula (1). ##STR1##

摘要翻译： 用于显影静电图像的非磁性调色剂具有通过在水性介质中聚合至少包含可聚合单体，炭黑和偶氮型铁化合物的可聚合单体组合物而产生的非磁性调色剂颗粒。 碳黑的DPB吸油量为110ml / 100g至200ml / 100g，通过氮吸附测定的比表面积为100m 2 / g以下，挥发性成分为2％以下，平均粒径 一次粒径为20μm〜60μm，偶氮型铁化合物为下式（1）表示的化合物。