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：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。

公开(公告)号：US07022449B2

公开(公告)日：2006-04-04

申请号：US10629751

申请日：2003-07-30

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： G03G9/08 ,  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 tan δ (103 to 104 Hz) of the toner is represented by the following expression: tan δ(103 to 104 Hz)≦0.0060 where the loss tangent tan δ is represented by ∈″/∈′ where ∈″ denotes dielectric loss factor and ∈′ denotes dielectric constant, and tan δ (103 to 104 Hz) denotes the loss tangent in a frequency range of 103 to 104 Hz; and a ratio of tan δ (105 Hz) to tan δ (5×104 Hz) is represented by the following expression: 1.05≦tan δ(105 Hz)/tan δ(5×104 Hz)≦1.40 where tan δ (105 Hz) denotes loss tangent at the frequency of 105 Hz and tan δ (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， 调色剂的损耗角正切tanδ（10 3至10 4 Hz）由以下表达式表示：<？in-line-formula description =“In-Line Formulas “end =”lead“？>tanδ（10 <3> <10> 4Hz）<= 0.0060 <？in-line-formula description =”In-line Formulas“ end =“tail”？>其中损耗正切tanδ由∈“/∈”表示，其中∈“表示介电损耗因子，∈'表示介电常数，tanδ（10 <3> 至10 4Hz）表示在10 3至10 4Hz的频率范围内的损耗角正切; 并且tanδ（10Hz）与tanδ（5×10 4 Hz）的比率由以下表达式表示：<？in-line-formula description =“ 在线公式“end =”lead“？> 1.05 <= TAN delta（10Hz）/tanδ（5×10 4 Hz）<= 1.40 < -line-formula description =“In-line Formulas”end =“tail”？>其中，tanδ（10Hz）表示频率为10 5的损耗角正切， Hz和tanδ（5×10 4 Hz）表示频率为5×10 4 Hz的损耗角正切。

公开(公告)号：US20060014095A1

公开(公告)日：2006-01-19

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 ,  G03G9/097

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 tan δ (103 to 104 Hz) of the toner is represented by the following expression: tan δ (103 to 104 Hz)≦0.0060 where the loss tangent tan δ is represented by ε″/ε′ where ε″ denotes dielectric loss factor and ε′ denotes dielectric constant, and tan δ (103 to 104 Hz) denotes the loss tangent in a frequency range of 103 to 104 Hz; and a ratio of tan δ (105 Hz) to tan δ (5×104 Hz) is represented by the following expression: 1.05≦tan δ (105 Hz)/tan δ (5×104 Hz)≦1.40 where tan δ (105 Hz) denotes loss tangent at the frequency of 105 Hz and tan δ (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， 调色剂的损耗角正切tanδ（10 3至10 4 Hz）由以下表达式表示：<？in-line-formula description =“In-Line Formulas “end =”lead“？>tanδ（10 <3> <10> 4Hz）<= 0.0060 <？in-line-formula description =”In-line Formulas“ end =“tail”？>其中损耗正切tanδ由ε“/ epsilon表示，其中ε”表示介电损耗因子，ε“表示介电常数，tanδ（10 < 至10 4Hz）表示在10 3至10 4Hz的频率范围内的损耗角正切; 并且tanδ（10Hz）与tanδ（5×10 4 Hz）的比率由以下表达式表示：<？in-line-formula description =“ 在线公式“end =”lead“？> 1.05 <= TAN delta（10Hz）/tanδ（5×10 4 Hz）<= 1.40 < -line-formula description =“In-line Formulas”end =“tail”？>其中，tanδ（10Hz）表示频率为10 5的损耗角正切， Hz和tanδ（5×10 4 Hz）表示频率为5×10 4 Hz的损耗角正切。

公开(公告)号：US20050106488A1

公开(公告)日：2005-05-19

申请号：US10980252

申请日：2004-11-04

申请人： Tetsuya Ida ,  Yasuhiro Ichikawa ,  Wakashi Iida ,  Yojiro Hotta ,  Kazuhiko Hayami ,  Hirohide Tanikawa

发明人： Tetsuya Ida ,  Yasuhiro Ichikawa ,  Wakashi Iida ,  Yojiro Hotta ,  Kazuhiko Hayami ,  Hirohide Tanikawa

IPC分类号： G03G9/08 ,  G03G9/087 ,  G03G9/09 ,  G03G15/01

CPC分类号： G03G9/08755 ,  G03G9/081 ,  G03G9/091 ,  G03G9/0926

摘要： The present invention provides a yellow toner which is excellent in transparency of an image formed on an OHP sheet, excellent in color reproducibility even when a light-pressure fixing unit is employed, excellent in coloring power and charge property, and is reduced in occurrence of filming. The present invention also provides a yellow toner having excellent durability and capable of contributing to the simplification or miniaturization of the constitution of an image forming apparatus. The yellow toner of the invention comprises a binder resin and a colorant, the binder resin contains at least a polyester unit, and the toner in the powder state has a lightness L* satisfying the relationship of L*>87 and has a chromaticity b* satisfying the relationship of 106

摘要翻译： 本发明提供一种在OHP片上形成的图像的透明度优异的黄色调色剂，即使使用光压固定单元，着色力和充电性也优异，颜色再现性优异，发色性降低 拍摄 本发明还提供了一种黄色调色剂，其具有优异的耐久性并且能够有助于简化或小型化图像形成装置的结构。 本发明的黄色调色剂包含粘合剂树脂和着色剂，所述粘合剂树脂至少含有聚酯单元，粉末状态的调色剂具有满足L *> 87的关系的亮度L *，并具有色度b * 满足106