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：US5604071A

公开(公告)日：1997-02-18

申请号：US393041

申请日：1995-02-23

申请人： Kenji Okado ,  Ryoichi Fujita ,  Tsuyoshi Takiguchi

发明人： Kenji Okado ,  Ryoichi Fujita ,  Tsuyoshi Takiguchi

IPC分类号： C09C1/36 ,  G03G9/087 ,  G03G9/097 ,  G03G9/08

CPC分类号： B82Y30/00 ,  C09C1/3684 ,  G03G9/08755 ,  G03G9/09716 ,  C01P2002/02 ,  C01P2002/84 ,  C01P2004/10 ,  C01P2004/32 ,  C01P2004/51 ,  C01P2004/61 ,  C01P2004/62 ,  C01P2004/64 ,  C01P2004/80 ,  C01P2004/84 ,  C01P2006/12 ,  C01P2006/40 ,  C01P2006/60 ,  C01P2006/90

摘要： The toner for developing an electrostatic image, excellent in any environmental conditions, comprises the colorant-containing resin particles and at least one kind of fine titanium oxide powder which has been made hydrophobic by treating in an aqueous medium; the fine titanium oxide powder has an average particle diameter of from 0.001 .mu.m to 0.2 .mu.m and a hydrophobicity of from 20% to 80%.

摘要翻译： 用于显影静电图像的调色剂在任何环境条件下都是优异的，包括含着色剂的树脂颗粒和至少一种通过在水介质中处理而疏水的氧化钛粉末; 该微细氧化钛粉末的平均粒径为0.001μm〜0.2μm，疏水性为20〜80％。

公开(公告)号：US5164275A

公开(公告)日：1992-11-17

申请号：US878414

申请日：1992-05-04

申请人： Hiroyuki Kobayashi ,  Mitsuru Uchida ,  Kenji Okado

发明人： Hiroyuki Kobayashi ,  Mitsuru Uchida ,  Kenji Okado

IPC分类号： G03G9/08 ,  G03G9/09 ,  G03G13/01

CPC分类号： G03G9/09 ,  G03G13/013 ,  G03G9/08

摘要： Four color toners of yellow, magenta, cyan and black, and four two-component developers containing the four color toners respectively in combination with a resin-coated ferrite carrier suitable for multi-color electrophotographic copying are provided. Each of the four-color toners is strictly regulated in relation not only to the carrier but also to the other color toners. More specifically, each color toner is strictly controlled with respect to a particle size distribution, freeness from agglomeration, melting characteristics including heat-absorption peaks and apparent viscosity on melting, chromaticity, triboelectric chargeability and optical toner concentration detection characteristic. Because of the strict regulation of these various parameters, the resultant multi-color toner or developer system shows excellent performances at every stage of multi-color electrophotography including development, transfer and fixing (color-mixing) for a long period of successive copying.

摘要翻译： 提供了黄色，品红色，青色和黑色的四色调色剂和分别与适用于多色电子照相复印的树脂涂覆的铁氧体载体组合的四色调色剂的四种双组分显影剂。 四色调色剂中的每一种都不仅与载体相关，而且与其他颜色调色剂有关。 更具体地说，每种彩色调色剂都是相对于粒度分布，结块游离度，包括热吸收峰的熔融特性和熔融时的表观粘度，色度，摩擦带电性和光调色剂浓度检测特性来严格控制的。 由于这些各种参数的严格调节，所得到的多色调色剂或显影剂系统在多色电子照相术的每个阶段显示出优异的性能，包括长时间连续复制的显影，转印和定影（色混合）。

公开(公告)号：US4954404A

公开(公告)日：1990-09-04

申请号：US251780

申请日：1988-10-03

申请人： Masahiro Inoue ,  Hatsuo Tajima ,  Yuji Sakemi ,  Kenji Okado

发明人： Masahiro Inoue ,  Hatsuo Tajima ,  Yuji Sakemi ,  Kenji Okado

IPC分类号： G03G15/01 ,  G03G13/01 ,  G03G13/09

CPC分类号： G03G13/09 ,  G03G13/013

摘要： A method of reverse development for depositing the toner particles to the light potential area of a photosensitive member. The developer used contains magnetic carrier particles and toner particles. An alternating electric field is formed in the developing position or zone. A relative volumetric ratio Q (%) of the magnetic carrier particles in the developing position satisfies 15.0.ltoreq.Q.ltoreq.28.0. The relative volumetric ratio is defined asQ=(M/h).times.(1/.rho.).times.C.sigma./(T+C)where M (g/cm.sup.2) is an amount of applied developer on a developing sleeve surface per unit area, h (cm) is a height of space in the developing position, .rho. (g/cm.sup.3) is a true density of the magnetic carrier particles, C/(T+C) (%) is a weight ratio of the carrier particles in the developer on the surface of the sleeve, and .sigma. is a ratio of a peripheral speed of the sleeve relative to the peripheral speed of the photosensitive member.

摘要翻译： 一种用于将调色剂颗粒沉积到感光构件的光电势区域的反向显影方法。 使用的显影剂包含磁性载体颗粒和调色剂颗粒。 在显影位置或区域形成交变电场。 显影位置中的磁性载体颗粒的相对体积比Q（％）满足15.0≤Q≤28.0。 相对体积比定义为Q =（M / h）x（1 / rho）xC sigma /（T + C）其中M（g / cm2）是每单位面积在显影套筒表面上施加的显影剂的量， h（cm）是显影位置的高度，rho（g / cm3）是磁性载体颗粒的真实密度，C /（T + C）（％）是载体颗粒的重量比 显影剂在套筒的表面上，西格玛是套筒的圆周速度相对于感光构件的圆周速度的比率。

公开(公告)号：US4904558A

公开(公告)日：1990-02-27

申请号：US317835

申请日：1989-03-03

申请人： Takayuki Nagatsuka ,  Kenji Okado ,  Makoto Kanbayashi

发明人： Takayuki Nagatsuka ,  Kenji Okado ,  Makoto Kanbayashi

IPC分类号： G03G9/08 ,  G03G9/097 ,  G03G9/107 ,  G03G13/09 ,  G03G15/08

CPC分类号： G03G9/0819 ,  G03G13/09 ,  G03G9/097 ,  G03G9/09708 ,  G03G9/09716 ,  G03G9/09725 ,  G03G9/107

摘要： An image forming method that includes the steps of providing a developer comprising at least colored resin particles, a fluidity improver having a specific chargeability and magnetic particles wherein the colored resin particles have a volume-average particle size of 4-10 microns and a specific volume-basis particle size distribution; supplying the developer to a surface of a developer-carrying member disposed opposite to a latent image-bearing member having thereon an electrostatic latent image; carrying the developer on the surface of the developer-carrying member; and developing the electrostatic latent image on the latent image-bearing member with the developer in a developing zone where the latent image-bearing member is disposed opposite to the developer-carrying member to form a toner image; wherein an alternating electric field comprising an AC component and a DC component is imparted to the developing zone under specific conditions.

公开(公告)号：US4592987A

公开(公告)日：1986-06-03

申请号：US658787

申请日：1984-10-09

申请人： Yasuo Mitsuhashi ,  Masanori Takenouchi ,  Kenji Okado ,  Eiichi Imai ,  Koshi Suematsu

发明人： Yasuo Mitsuhashi ,  Masanori Takenouchi ,  Kenji Okado ,  Eiichi Imai ,  Koshi Suematsu

IPC分类号： G03G15/09 ,  G03G9/083 ,  G03G13/09 ,  G03G13/08

CPC分类号： G03G13/09 ,  Y10S222/01

摘要： A method for applying a toner comprising: forming, in a container containing a toner and magnetic particles for application of the toner, a magnetic brush of the magnetic particles; circulating the magnetic particles in the container; and forming a thin layer of the toner electrically charged on the toner carrying member; wherein the magnetic particles have a particle size distribution of 30 wt. % or more in the range of 150 to 200 mesh and 5 wt. % or less of under 250 mesh, and the weight ratio of the toner to the magnetic particles is from 5:95 to 50:50 in the region where the magnetic brush is formed.

摘要翻译： 一种施加调色剂的方法，包括：在容纳调色剂的容器和用于施加调色剂的磁性颗粒的容器中形成磁性颗粒的磁刷; 将磁性颗粒循环在容器中; 以及形成在所述调色剂承载构件上带电的所述调色剂薄层; 其中所述磁性颗粒的粒度分布为30wt。 在150至200目和5wt。 ％以下的250目以下，在形成磁刷的区域中，调色剂与磁性粒子的重量比为5:95〜50:50。