公开(公告)号：US5700617A

公开(公告)日：1997-12-23

申请号：US727219

申请日：1996-10-08

申请人： Tsuyoshi Takiguchi ,  Kenji Okado ,  Masaaki Taya ,  Ryoichi Fujita ,  Makoto Kanbayashi ,  Wakashi Iida ,  Tetsuya Ida

发明人： Tsuyoshi Takiguchi ,  Kenji Okado ,  Masaaki Taya ,  Ryoichi Fujita ,  Makoto Kanbayashi ,  Wakashi Iida ,  Tetsuya Ida

IPC分类号： G03G9/097 ,  H01B1/00 ,  H01B1/06

CPC分类号： G03G9/09733 ,  G03G9/09708 ,  G03G9/09783

摘要： A toner for developing an electrostatic image is formed from toner particles containing a binder resin, a colorant, and a charge-controlling agent. The charge-controlling agent comprises an aromatic oxycarboxylic acid, a metal compound of the aromatic oxycarboxylic acid, and an inorganic compound formed from an inorganic anion and an inorganic cation. The aromatic oxycarboxylic acid, the metal compound of the aromatic carboxylic acid and the inorganic anion are contained in proportions of A (wt. %), B (wt. %) and C (ppm), respectively, satisfying the following conditions: 1/99.ltoreq.A/B.ltoreq.20/80, and 10.sup.2 .ltoreq.C. Because of the inclusion of an inorganic compound providing a sufficient amount of inorganic anion, the charge-controlling agent shows a stable charge-controlling characteristic, and the resultant toner exhibits a stable developing performance and transferability in continuous image formation in various environmental conditions.

摘要翻译： 用于显影静电图像的调色剂由含有粘合剂树脂，着色剂和电荷控制剂的调色剂颗粒形成。 电荷控制剂包括芳族羟基羧酸，芳族羟基羧酸的金属化合物和由无机阴离子和无机阳离子形成的无机化合物。 芳族羟基羧酸，芳族羧酸的金属化合物和无机阴离子分别以A（重量％），B（重量％）和C（ppm）的比例包含，满足以下条件：1 / 99 。 由于含有提供足够量的无机阴离子的无机化合物，电荷控制剂显示出稳定的电荷控制特性，并且所得调色剂在各种环境条件下表现出稳定的连续成像的显影性能和转印性。

公开(公告)号：US5747209A

公开(公告)日：1998-05-05

申请号：US640077

申请日：1996-04-30

申请人： Tsuyoshi Takiguchi ,  Kenji Okado ,  Masaaki Taya ,  Ryoichi Fujita ,  Makoto Kanbayashi ,  Kohji Inaba ,  Wakashi Iida ,  Kazunori Kato ,  Tetsuya Ida ,  Shinya Yachi

发明人： Tsuyoshi Takiguchi ,  Kenji Okado ,  Masaaki Taya ,  Ryoichi Fujita ,  Makoto Kanbayashi ,  Kohji Inaba ,  Wakashi Iida ,  Kazunori Kato ,  Tetsuya Ida ,  Shinya Yachi

IPC分类号： G03G9/083 ,  G03G9/087 ,  G03G9/09 ,  G03G9/097 ,  G03G9/00

CPC分类号： G03G9/09783 ,  G03G9/09733

摘要： A toner for developing electrostatic images is formed of toner particles comprising (a) a binder resin, (b) a colorant or magnetic material, (c) an aromatic hydroxycarboxylic acid (A), and (d) a metal compound of the aromatic hydroxycarboxylic acid (A). The aromatic hydroxycarboxylic acid (A) and the metal compound of the aromatic hydroxycarboxylic acid (A) are contained in a weight ratio of 1:99 to 10:90. As a result of co-inclusion of a small amount of the aromatic hydroxycarboxylic acid (A) in addition to the metal compound thereof, the resultant toner is provided with a quick chargeability in a low humidity environment and an improved level of triboelectric charge in a high humidity environment, presumably because of the stabilization effect of the small amount of the aromatic hydroxycarboxylic acid (A) on the metal compound thereof.

摘要翻译： 用于显影静电图像的调色剂由调色剂颗粒形成，包括（a）粘合剂树脂，（b）着色剂或磁性材料，（c）芳族羟基羧酸（A），和（d）芳族羟基羧酸的金属化合物 酸（A）。 芳香族羟基羧酸（A）和芳香族羟基羧酸（A）的金属化合物的重量比为1:99〜10:90。 作为除了其金属化合物之外少量芳族羟基羧酸（A）共混物的结果，所得到的调色剂在低湿度环境中具有快速带电性，并且提供了一种改善的摩擦带电量 高湿度环境，大概是因为少量芳族羟基羧酸（A）对其金属化合物的稳定作用。

公开(公告)号：US5851714A

公开(公告)日：1998-12-22

申请号：US825395

申请日：1997-03-28

申请人： Masaaki Taya ,  Kenji Okado ,  Ryoichi Fujita ,  Makoto Kanbayashi ,  Tsuyoshi Takiguchi ,  Wakashi Iida ,  Tetsuya Ida

发明人： Masaaki Taya ,  Kenji Okado ,  Ryoichi Fujita ,  Makoto Kanbayashi ,  Tsuyoshi Takiguchi ,  Wakashi Iida ,  Tetsuya Ida

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

CPC分类号： G03G9/08797 ,  G03G9/081 ,  G03G9/08755 ,  G03G9/08793 ,  G03G9/08795

摘要： A toner for developing an electrostatic image is formed from toner particles containing at least a binder resin, a colorant and an organometallic compound. The binder resin in the toner particles has a tetrahydrofuran-insoluble (THF-insoluble) content of at most 5.0 wt.% based on the binder resin. The toner has a glass transition temperature of 50.degree.-80.degree. C. The toner further has storage modulus characteristics including a storage modulus at 80.degree. C. (G'.sub.80) of 1.times.10.sup.4 -5.times.10.sup.6 �dyn/cm.sup.2 !, a storage modulus at 130.degree. C. (G'.sub.130) providing a ratio G'.sub.80 /G'.sub.130 of 10-5.times.10.sup.3, and a storage modulus curve showing a minimum (G'min) in a temperature region of 110.degree.-190.degree. C. The toner especially exhibits excellent low-temperature fixability, anti-high temperature offset characteristic, storage stability and color-miscibility.

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，着色剂和有机金属化合物的调色剂颗粒形成。 调色剂颗粒中的粘合剂树脂相对于粘合剂树脂具有至多5.0重量％的四氢呋喃不溶（THF不溶性）含量。 调色剂的玻璃化转变温度为50-80℃。该调色剂还具有储能模量特性，包括80℃下的储能模量（G'80）为1×104-5×106 [dyn / cm2]，储能模量 130℃（G'130），比率G'80 / G'130为10-5×103，储能模量曲线在110〜190℃的温度区域为最小值（G'min）。 调色剂特别表现出优异的低温定影性，抗高温偏移特性，储存稳定性和颜色混溶性。

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：US5912099A

公开(公告)日：1999-06-15

申请号：US904476

申请日：1997-08-04

申请人： Makoto Kanbayashi ,  Masaaki Taya ,  Ryoichi Fujita ,  Wakashi Iida ,  Tetsuya Ida

发明人： Makoto Kanbayashi ,  Masaaki Taya ,  Ryoichi Fujita ,  Wakashi Iida ,  Tetsuya Ida

IPC分类号： G03G9/08 ,  G03G9/09

CPC分类号： G03G9/092 ,  G03G9/081

摘要： A magenta toner for developing electrostatic images is formed of a binder resin, and a quinacridone pigment providing an X-ray diffraction spectrum showing two peaks in a Bragg angle (2.theta.) region of 5-10 deg. The magenta toner has an improved light fastness, may have a desired hue comparable to a printing process ink and is suitably used for electrophotographic full-color image formation. The magenta toner may preferably be formed through a process including a first kneading step starting from wet blending of a binder resin and two paste pigments including quinacridone and 2,9-dimethylquinacridone, respectively, under mild conditions not causing crystal transformation to form a master batch and a second kneading step of diluting the master batch together with other additive.

摘要翻译： 用于静电图像显影的品红色调色剂由粘合剂树脂形成，并且提供在5-10度的布拉格角（2θ）区域中显示两个峰的X射线衍射光谱的喹吖啶酮颜料。 洋红色调色剂具有改善的耐光性，可以具有与印刷工艺油墨相当的期望色调，并且适用于电子照相全色图像形成。 品红色调色剂可以优选通过包括第一捏合步骤的方法形成，所述方法包括在不引起晶体转变以形成母料的温和条件下分别湿粘合粘合剂树脂和包括喹吖啶酮和2,9-二甲基喹吖啶酮的两种糊状颜料 以及将母料与其他添加剂一起稀释的第二捏合步骤。

公开(公告)号：US6077635A

公开(公告)日：2000-06-20

申请号：US99527

申请日：1998-06-18

申请人： Kenji Okado ,  Ryoichi Fujita ,  Wakashi Iida ,  Yuji Moriki ,  Kazumi Yoshizaki ,  Michihisa Magome

发明人： Kenji Okado ,  Ryoichi Fujita ,  Wakashi Iida ,  Yuji Moriki ,  Kazumi Yoshizaki ,  Michihisa Magome

IPC分类号： G03G9/08 ,  G03G9/097 ,  G03G13/01

CPC分类号： G03G9/0827 ,  G03G9/0819 ,  G03G9/09708

摘要： A toner is disclosed which has toner particles and an external additive. The toner has (a) in circularity distribution of particles measured with a flow type particle image analyzer, an average circularity of from 0.920 to 0.995, containing particles with a circularity of less than 0.950 in an amount of from 2% by number to 40% by number; and (b) a weight-average particle diameter of from 2.0 .mu.m to 9.0 .mu.m as measured by Coulter method. The external additive has, on the toner particles, at least (i) an inorganic fine powder (A) present in the state of primary particles or secondary particles and having an average particle length of from 10 m.mu.m to 400 m.mu.m and a shape factor SF-1 of from 100 to 130 and (ii) a non-spherical inorganic fine powder (B) formed by coalescence of a plurality of particles and having a shape factor SF-1 of greater than 150. Also, a two-component developer and an image forming method, using the toner, are disclosed.

摘要翻译： 公开了一种具有调色剂颗粒和外部添加剂的调色剂。 调色剂具有（a）以流动型颗粒图像分析仪测量的颗粒的圆形分布，平均圆形度为0.920至0.995，其中圆形度小于0.950的颗粒的量为2％至40％ 按数量 （b）通过Coulter法测定的重均粒径为2.0μm〜9.0μm。 外部添加剂在调色剂颗粒上至少存在（i）以一次粒子或二次粒子状态存在的平均粒子长度为10μm〜400μm的无机细粉末（A）， 100〜130的形状因子SF-1和（ii）通过多个粒子的聚结而形成的非球形的无机细粉末（B），并且具有大于150的形状因子SF-1。另外， - 组分显影剂和使用调色剂的图像形成方法。

公开(公告)号：US5620824A

公开(公告)日：1997-04-15

申请号：US272507

申请日：1994-07-07

申请人： Kenji Okado ,  Akihiko Nakazawa ,  Ryoichi Fujita ,  Makoto Kanbayashi

发明人： Kenji Okado ,  Akihiko Nakazawa ,  Ryoichi Fujita ,  Makoto Kanbayashi

IPC分类号： G03G9/08 ,  G03G9/097

CPC分类号： G03G9/08 ,  G03G9/0819 ,  G03G9/0823 ,  G03G9/097

摘要： A toner for developing an electrostatic image has colored resin particles-(A) containing a coloring agent or a magnetic powder, and a powdery additive. The powdery additive has organic resin particles-(B) having peaks respectively in a region of particles diameters of 20 m.mu. to 200 m.mu. and a region of particle diameters of 300 m.mu. to 800 m.mu. in their particle size distribution, and the larger-diameters particles included in the region of particle diameters of 300 m.mu. to 800 m.mu. being contained in an amount of from 2% by weight to 20% by weight.

摘要翻译： 用于显影静电图像的调色剂具有含有着色剂或磁性粉末的着色树脂颗粒 - （A）和粉末状添加剂。 粉末状添加剂具有分别在粒径20μm〜200μm的范围内具有峰值的有机树脂粒子，粒径分布为300μm〜800μm的粒子的区域， 包含在粒径为300μm至800μm的区域中的大直径粒子的含量为2重量％至20重量％。

公开(公告)号：US5885742A

公开(公告)日：1999-03-23

申请号：US943698

申请日：1997-10-03

申请人： Kenji Okado ,  Toshiyuki Ugai ,  Ryoichi Fujita ,  Tsuyoshi Takiguchi

发明人： Kenji Okado ,  Toshiyuki Ugai ,  Ryoichi Fujita ,  Tsuyoshi Takiguchi

IPC分类号： G03G9/113

CPC分类号： G03G9/1136 ,  G03G9/1139

摘要： A carrier for electrophotography has carrier particles. Each carrier particle has a carrier core and a silicone resin coat layer that covers the carrier core. The carrier particle has silicon atoms and carrier atoms on its surface in the ratio that satisfies the condition of Si/C=0.1 to 2.0 as the number of atoms present on the carrier particle surface as measured by X-ray photoelectron spectroscopy, and from 0.1% by number to 5% by number of metal atoms are present on the carrier particle surface. Additionally, there is a two-component developer for developing electrostatic images which consists of a toner and the carrier. An image forming method in which the two-component developer having the toner and the carrier is transported to a developing zone which is defined by a latent image carried on a latent image bearing member to develop the latent image. A voltage is applied to the developer to direct the toner from the latent image bearing member to a member carrying the developer. A second voltage directs the toner from the developer toward the latent image and a third voltage developer the latent image using the toner of the two-component developer.

摘要翻译： 电子照相用载体具有载体颗粒。 每个载体颗粒具有载体芯和覆盖载体芯的硅树脂涂层。 载体颗粒的表面上具有硅原子和载体原子，其比例满足Si / C = 0.1〜2.0的条件，作为通过X射线光电子能谱测定的载体颗粒表面上存在的原子数，0.1 在载体颗粒表面上存在数量％至5％的金属原子数。 此外，存在用于显影静电图像的双组分显影剂，其由调色剂和载体组成。 一种图像形成方法，其中具有调色剂和载体的双组分显影剂被输送到由承载在潜像承载部件上的潜像所限定的显影区域以显影潜像。 向显影剂施加电压以将调色剂从潜像承载部件引导到携带显影剂的部件上。 第二电压使用双组分显影剂的调色剂将调色剂从显影剂引导到潜像，第三电压显影剂潜像。

公开(公告)号：US5733702A

公开(公告)日：1998-03-31

申请号：US417227

申请日：1995-04-05

申请人： Kenji Okado ,  Toshiyuki Ugai ,  Ryoichi Fujita ,  Tsuyoshi Takiguchi ,  Yasuhiro Ichikawa

发明人： Kenji Okado ,  Toshiyuki Ugai ,  Ryoichi Fujita ,  Tsuyoshi Takiguchi ,  Yasuhiro Ichikawa

IPC分类号： G03G9/097 ,  G03G21/00

CPC分类号： G03G9/09708 ,  G03G9/097 ,  G03G9/09716

摘要： An image forming method is conducted by forming a toner image on a latent image bearing member containing an organic photoconductive material. The latent image bearing member includes a photosensitive layer containing an organic photoconductive material and a protective layer which contains fluorine-containing resin particles in an amount from 5% by weight to 40% by weight. The toner contains toner particles and external additives. The external additives include titanium oxide particles having a weight average particle diameter from 0.01 .mu.m to 0.2 .mu.m having been subjected to hydrophobic treatment, organic resin particles having a weight average particle diameter from 0.02 .mu.m to 0.5 .mu.m, and inorganic compound particles having a weight average particle diameter from 0.5 .mu.m to 2.5 m. The inorganic compound particles may be specific titanates, oxides or carbonate. The external additives are added in an amount satisfying the relationship: (A):(B)=2:1 to 10:1 (A):(C)=1:1 to 5:1 The toner contains toner particles having a particle diameter from 2 .mu.m to 5 .mu.m in an amount from 15% by number to 40% by number. The toner image is transferred to a transfer medium and the latent image bearing member is then cleaned.

摘要翻译： 通过在包含有机光电导材料的潜像承载部件上形成调色剂图像来进行成像方法。 潜像承载部件包括含有有机光导材料的感光层和含有5重量％至40重量％的含氟树脂颗粒的保护层。 调色剂含有调色剂颗粒和外部添加剂。 外部添加剂包括经过疏水处理的重均粒径为0.01μm〜0.2μm的二氧化钛粒子，重均粒径为0.02μm〜0.5μm的有机树脂粒子，无机化合物粒子 重均粒径为0.5〜2.5μm。 无机化合物颗粒可以是特定的钛酸盐，氧化物或碳酸盐。 外加剂的添加量满足以下关系：（A）：（B）= 2：1〜10：1（A）：（C）= 1：1〜5：1调色剂含有调色剂颗粒， 从2亩到5亩，数量从15％增加到40％。 将调色剂图像转印到转印介质上，然后清洁潜像承载部件。