公开(公告)号：US07300733B2

公开(公告)日：2007-11-27

申请号：US11225169

申请日：2005-09-14

申请人： Nobuyoshi Sugahara ,  Takaaki Kohtaki ,  Yasuhiro Ichikawa ,  Tetsuya Ida ,  Kazuhiko Hayami ,  Nozomu Komatsu

发明人： Nobuyoshi Sugahara ,  Takaaki Kohtaki ,  Yasuhiro Ichikawa ,  Tetsuya Ida ,  Kazuhiko Hayami ,  Nozomu Komatsu

IPC分类号： G03G9/087

CPC分类号： G03G9/08755 ,  G03G9/0819 ,  G03G9/0821 ,  G03G9/0823 ,  G03G9/0827 ,  G03G9/08706 ,  G03G9/08708 ,  G03G9/08713 ,  G03G9/08715 ,  G03G9/08717 ,  G03G9/0872 ,  G03G9/08722 ,  G03G9/08724 ,  G03G9/08726 ,  G03G9/08728 ,  G03G9/08731 ,  G03G9/08733 ,  G03G9/08782 ,  G03G9/08795 ,  G03G9/08797 ,  G03G9/0904 ,  G03G9/09783

摘要： To provide a black toner having excellent charging property and transferring property against a severe environmental change. The black toner includes toner particle containing at least a binder resin, carbon black and a releasing agent, wherein: the toner particles have a weight-average particle diameter of 3.5 to 8.0 μm; total amount of acid value and hydroxyl value of the toner is 30 to 75 mgKOH/g; average circularity of particles contained in the toner having circle-equivalent diameter of 2 μm or more is 0.915 to 0.960; loss tangent tanδ (103 to 104 Hz) of the toner is represented by the following expression: tanδ (103 to 104 Hz)≦0.0060 where the loss tangent tanδ is represented by ε″/ε′ where ε″ denotes dielectric loss factor and ε′ denotes dielectric constant, and tanδ (103 to 104 Hz) denotes the loss tangent in a frequency range of 103 to 104 Hz; and a ratio of tanδ (105 Hz) to tanδ (5×104 Hz) is represented by the following expression: 1.05≦tanδ (105 Hz)/tanδ (5×104 Hz)≦1.40 where tanδ (105 Hz) denotes loss tangent at the frequency of 105 Hz and tanδ (5×104 Hz) denotes loss tangent at the frequency of 5×104 Hz.

摘要翻译： 为了提供具有优异的充电性能和转印性能的黑色调色剂，以防恶劣的环境变化。 黑色调色剂包括至少含有粘合剂树脂，炭黑和脱模剂的调色剂颗粒，其中：调色剂颗粒的重均粒径为3.5-8.0μm; 调色剂的酸值和羟值的总量为30〜75mgKOH / g; 圆当量直径为2μm以上的调色剂中所含的颗粒的平均圆形度为0.915〜0.960， 调色剂的损耗正切塔兰塔（10 3至10 4 Hz）由以下表达式表示：<？in-line-formula description =“在线公式” end =“lead”？> tandelta（10 3至10 4 Hz）<= 0.0060 <？in-line-formula description =“In-line Formulas”end = “tail”？>其中损耗正切tandelta由ε“/ epsilon”表示，其中epsilon表示介电损耗因子，ε表示介电常数，tandelta（10 3〜10 > 4Hz）表示在10 3至10 4 Hz的频率范围内的损耗角正切; 并且tandelta（10Hz）与tandelta（5×10 4 Hz）的比率由以下表达式表示：<？in-line-formula description =“In- 线公式“end =”lead“？> 1.05 <= TANdelta（10Hz）/ tandelta（5×10 4 Hz）<= 1.40 < 描述=“在线公式”end =“tail”？>其中tandelta（10Hz）表示在10Hz频率下的损耗角正切和tandelta（5×10 5 4Hz）表示频率为5×10 4 Hz的损耗角正切。

公开(公告)号：US20050100808A1

公开(公告)日：2005-05-12

申请号：US10980197

申请日：2004-11-04

申请人： Akira Hashimoto ,  Yojiro Hotta ,  Wakashi Iida ,  Kazuhiko Hayami ,  Yasuhiro Ichikawa ,  Hirohide Tanikawa

发明人： Akira Hashimoto ,  Yojiro Hotta ,  Wakashi Iida ,  Kazuhiko Hayami ,  Yasuhiro Ichikawa ,  Hirohide Tanikawa

IPC分类号： G03G9/08 ,  G03G9/087 ,  G03G9/09 ,  G03G9/097 ,  G03G9/113

CPC分类号： G03G9/0827 ,  G03G9/0806 ,  G03G9/08755 ,  G03G9/08782 ,  G03G9/08786 ,  G03G9/08795 ,  G03G9/08797

摘要： The present invention relates to a toner which has good property such as fixability, coloring power, developability, durability, and environmental stability and so on. More specifically, the present invention relates to a color toner containing at least a binder resin, a colorant, and a wax, in which: a wax concentration of an extract obtained by dispersing the toner into n-hexane at a concentration of 15 mg/cm3 at 23° C. and by subjecting the resultant dispersion to extraction treatment at 23° C. for 1 minute is in the range of 0.080 to 0.500 mg/cm3; an average circularity of particles each having a circle-equivalent diameter of 3 μm or more in the toner is in the range of 0.925 to 0.965; and a content of the wax is in the range of 1 to 15 parts by mass with respect to 100 parts by mass of the binder resin.

摘要翻译： 本发明涉及具有良好的定影性，着色力，显影性，耐久性和环境稳定性等的调色剂。 更具体地说，本发明涉及至少含有粘合剂树脂，着色剂和蜡的彩色调色剂，其中：通过将调色剂分散在正己烷中的浓度为15mg / 在23℃下，通过使所得分散体在23℃下进行提取处理1分钟，在0.080至0.500mg / cm 3范围内， ; 在调色剂中各自具有3μm或更大的圆当量直径的颗粒的平均圆形度在0.925至0.965的范围内; 相对于100质量份粘合剂树脂，蜡的含量为1〜15质量份。

公开(公告)号：US06187490B1

公开(公告)日：2001-02-13

申请号：US09526473

申请日：2000-03-15

申请人： Masaaki Taya ,  Takaaki Kohtaki ,  Yasuhiro Ichikawa

发明人： Masaaki Taya ,  Takaaki Kohtaki ,  Yasuhiro Ichikawa

IPC分类号： G03G1301

CPC分类号： G03G9/10 ,  G03G9/107

摘要： A two-component developer suitable for electrophotography is formed of a toner and a resin-coated carrier. The resin-coated carrier is formed of carrier core particles and 0.01-2.0 wt. % based on the carrier core particles of a resin coating layer coating the carrier core particles. The resin-coated carrier has an average particle size of 25-55 &mgr;m and the carrier core particles comprise a ferrite component represented by formula (I) below: (Fe2O3)a(MnO)b(MgO)c(A)d  (I), wherein A represents a mixture of SrO, CaO and Al2O3, and a, b, c and d are numbers representing mol fractions of associated components and satisfying: 0.4

摘要翻译： 适用于电子照相术的双组分显影剂由调色剂和树脂涂布载体形成。 树脂涂层载体由载体芯颗粒和0.01-2.0重量％ 基于载体芯颗粒的载体芯颗粒涂覆载体芯颗粒。 树脂涂布载体的平均粒径为25-55μm，载体芯粒子包含由下式（I）表示的铁氧体组分：其中A表示SrO，CaO和Al 2 O 3的混合物，a，b，c d表示相关成分的摩尔分数，满足：0.4

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。

公开(公告)号：US5637432A

公开(公告)日：1997-06-10

申请号：US395645

申请日：1995-02-28

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 ,  G03G9/00

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

摘要： The present invention provides a toner for developing an electrostatic image, comprising toner particles and external additives, wherein;said external additives comprise (A) titanium oxide particles having a weight average particle diameter of from 0.01 .mu.m to 0.2 .mu.m, having been subjected to hydrophobic treatment, (B) organic resin particles having a weight average particle diameter of from 0.02 .mu.m to 0.5 .mu.m and (C) an inorganic compound having a weight average particle diameter of from 0.5 .mu.m to 2.5 .mu.m; said external additives being added in an amount satisfying the relationship:(A):(B)=2:1 to 10:1(A):(C)=1:1 to 5:1; andsaid toner contains toner particles having a particle diameter of from 2 .mu.m to 5 .mu.m in an amount of from 15% by number to 40% by number.

摘要翻译： 本发明提供一种用于显影静电图像的调色剂，其包含调色剂颗粒和外部添加剂，其中： 所述外用添加剂包含（A）重均粒径为0.01μm〜0.2μm的氧化钛粒子，经过疏水处理后，（B）重均粒径为0.02μm的有机树脂粒子 至（C）重均粒径为0.5μm〜2.5μm的无机化合物; 所述外部添加剂的添加量满足以下关系：（A）：（B）= 2：1〜10：1（A）：（C）= 1：1〜5：1; 所述调色剂含有15〜40个数量的粒径为2〜5μm的调色剂颗粒。