公开(公告)号：US06465144B2

公开(公告)日：2002-10-15

申请号：US09800655

申请日：2001-03-08

申请人： Akira Hashimoto ,  Kenji Okado ,  Tsutomu Kukimoto ,  Tatsuya Nakamura ,  Tsuyoshi Takiguchi ,  Tatsuhiko Chiba ,  Michihisa Magome ,  Keiji Komoto

发明人： Akira Hashimoto ,  Kenji Okado ,  Tsutomu Kukimoto ,  Tatsuya Nakamura ,  Tsuyoshi Takiguchi ,  Tatsuhiko Chiba ,  Michihisa Magome ,  Keiji Komoto

IPC分类号： G03G9083

CPC分类号： G03G9/08708 ,  G03G9/0819 ,  G03G9/0825 ,  G03G9/0827 ,  G03G9/0833 ,  G03G9/0835 ,  G03G9/0836 ,  G03G9/0837 ,  G03G9/0838 ,  G03G9/08782

摘要： A magnetic toner includes: magnetic toner particles each comprising at least a binder resin and magnetic toner, and inorganic fine powder. The magnetic toner has an average circularity of at least 0.970, and a magnetization of 10-50 Am2/kg at a magnetic field of 79.6 kA/m. The magnetic powder comprises at least magnetic iron oxide. The magnetic toner particles retain carbon in an amount of A and iron in an amount of B at surfaces thereof as measured by X-ray photoelectron spectroscopy, satisfying: B/A

摘要翻译： 磁性调色剂包括：各自至少包含粘合剂树脂和磁性调色剂的磁性调色剂颗粒和无机细粉末。 磁性调色剂在79.6kA / m的磁场下的平均圆形度为至少0.970，磁化强度为10-50Am 2 / kg。 磁粉至少包含磁性氧化铁。 磁性调色剂颗粒通过X射线光电子能谱法测定其表面的B量的A和铁的碳，满足：B / A <0.001。 粘合剂树脂包括由至少包含苯乙烯单体的单体的聚合形成的树脂。 磁性调色剂的残留苯乙烯单体含量小于300ppm，并且包含满足以下关系的至少50％的调色剂颗粒：D / C <= 0.02，其中C表示磁性的体积平均粒径 调色剂，D表示磁性调色剂颗粒的表面与磁性调色剂颗粒中所含的磁性粉末颗粒之间的最小距离。 由于上述特征，即使在无清洁器模式的图像形成系统中，磁性调色剂也能表现出良好的电摄影性能，包括极佳的带电性和少量的转印残留调色剂。

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。

公开(公告)号：US5994019A

公开(公告)日：1999-11-30

申请号：US979960

申请日：1997-11-26

申请人： Kenji Okado ,  Toshiyuki Ugai ,  Ryoichi Fujita ,  Kazumi Yoshizaki

发明人： Kenji Okado ,  Toshiyuki Ugai ,  Ryoichi Fujita ,  Kazumi Yoshizaki

IPC分类号： G03G13/02 ,  G03G15/02 ,  G03G9/083

CPC分类号： G03G13/025 ,  G03G15/0241 ,  G03G2215/022

摘要： An image forming method is disclosed in which a contact charging means is brought into contact with a latent image bearing member to electrostatically charge the latent image bearing member on which electrostatic latent images are formed and developed with a one component type or two component type developer to form toner images, using a developing assembly provided with a developing container and a developer carrying member. The one component developer is comprised of toner particles. The two component type developer is comprised of toner particles and a magnetic carrier. The toner particles of the one component type and two component type developers contains fine particles as an external additive.The latent image bearing member has a surface layer having a volume resistivity A of from 10.sup.8 to 10.sup.15 .OMEGA..multidot.cm; the contact charging means comprises an assembly for electrostatically charging the latent image bearing member by applying a voltage to a charging member having a volume resistivity B of from 10.sup.4 to 10.sup.9 .OMEGA..multidot.cm; the toner has, as an external additive, fine particles having a volume resistivity C of from 10.sup.7 to 10.sup.11 .OMEGA..multidot.cm; the magnetic carrier has a volume resistivity D1 of from 10.sup.9 to 10.sup.15 .OMEGA..multidot.cm; and the developer carrying member has a surface layer having a volume resistivity D2 of from 10.sup.9 to 10.sup.15 .OMEGA..multidot.cm. The resistivities A, B, C, D1 and D2 stasisfy the following conditions: B

摘要翻译： 公开了一种图像形成方法，其中接触充电装置与潜像承载部件接触，以静电潜像形成和显影的潜像承载部件用单组分型或双组分型显影剂静电充电 使用具有显影容器和显影剂承载构件的显影组件形成调色剂图像。 单组分显影剂由调色剂颗粒组成。 双组分型显影剂由调色剂颗粒和磁性载体构成。 单组分型和二组分型显影剂的调色剂颗粒含有作为外部添加剂的细颗粒。 潜像承载部件具有体积电阻率A为108至1015欧米伽×厘米的表面层; 接触充电装置包括用于通过向体积电阻率B为104至109欧姆×xcm的充电部件施加电压来静电充电潜像承载部件的组件; 作为外部添加剂，调色剂具有体积电阻率C为107至1011欧米伽×厘米的细小颗粒; 磁性载体的体积电阻率D1为109〜1015ΩEGEG×cm; 并且显影剂承载构件具有体积电阻率D2为109至1015欧姆×xcm的表面层。 电阻率A，B，C，D1和D2停留在以下条件下：B

公开(公告)号：US5239343A

公开(公告)日：1993-08-24

申请号：US660152

申请日：1991-02-20

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

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

IPC分类号： G03G15/09

CPC分类号： G03G15/09 ,  G03G15/0921

摘要： A developing apparatus includes a developer layer thickness regulating zone downstream of one of magnetic poles of a stationary magnet disposed inside a developing sleeve, with respect to the rotational direction of the sleeve. In the regulating zone, there are provided a magnetic member and a non-magnetic member to regulate the layer thickness of the developer containing magnetic carrier particles and toner particles on the sleeve. The magnetic member has a width of not less than 1 mm and not more than 10 mm and a thickness of not less than 0.2 mm and not more than 3 mm.

摘要翻译： 显影装置包括相对于套筒的旋转方向设置在显影套筒内部的固定磁体的一个磁极下游的显影剂层厚度调节区域。 在调节区域中，设置有磁性构件和非磁性构件，以调节包含磁性载体颗粒的显影剂的层厚度和套筒上的调色剂颗粒。 磁性构件的宽度为1mm以上且10mm以下，厚度为0.2mm以上且3mm以下。

公开(公告)号：US06316156B1

公开(公告)日：2001-11-13

申请号：US08493009

申请日：1995-06-21

申请人： Tsuyoshi Takiguchi ,  Kenji Okado ,  Tetsuya Ida

发明人： Tsuyoshi Takiguchi ,  Kenji Okado ,  Tetsuya Ida

IPC分类号： G03G9087

CPC分类号： G03G9/107 ,  G03G9/0821 ,  G03G9/08755

摘要： A carrier for electrophotography and a two component type developer using the carrier. The carrier is composed of magnetic particles of a magnetic ferrite component represented by Formula: (Fe2O3)X(MnO)Y(A)Z. An image forming method is also disclosed which uses the two component type developer.

摘要翻译： 用于电子照相的载体和使用载体的双组分型显影剂。 载体由以下公式表示的磁性铁氧体组分的磁性颗粒组成：还公开了使用双组分型显影剂的图像形成方法。

公开(公告)号：US6124067A

公开(公告)日：2000-09-26

申请号：US358409

申请日：1999-07-22

申请人： Yushi Mikuriya ,  Kenji Okado ,  Kazumi Yoshizaki

发明人： Yushi Mikuriya ,  Kenji Okado ,  Kazumi Yoshizaki

IPC分类号： G03G9/08 ,  G03G9/097 ,  G03G9/107 ,  G03G9/113 ,  G03G15/08

CPC分类号： G03G9/09708 ,  G03G9/09716 ,  G03G9/09725 ,  G03G9/107 ,  G03G9/1075 ,  G03G9/1132 ,  G03G9/1134 ,  G03G9/1135 ,  G03G9/1139

摘要： A magnetic carrier constituting a two-component developer for use in an electrophotographic image forming method is formed of a carrier core comprising a first resin and magnetic fine particles dispersed in the first resin, and a second resin surface-coating the carrier core. (a) The magnetic carrier has a true specific gravity of 2.5-4.5, a magnetization .sigma..sub.1000 as measured in a magnetic field of 1000.times.(10.sup.3 /4.pi.).multidot.A/m (1000 oersted) of 15-60 Am.sup.2 /kg (emu/g), a residual magnetization .sigma..sub.r of 0.1-20 Am.sup.2 /kg (emu/g) and a resistivity of 5.times.10.sup.11 -5.times.10.sup.15 ohm.cm. (b) The first resin has a polymer chain including a methylene unit (--CH.sub.2 --). (c) The second resin has at least a fluoro-alkyl unit, a methylene unit (--CH.sub.2 --) and an ester unit. (d) The carrier core is surface-coated with (i) a mixture of the second resin and a coupling agent having at least an amino group and a methylene unit, or (ii) a coupling agent having at least an amino group and a methylene unit, and then with the second resin.

摘要翻译： 构成用于电子照相成像方法的双组分显影剂的磁性载体由包含分散在第一树脂中的第一树脂和磁性细颗粒的载体芯和表面涂覆载体芯的第二树脂形成。 （a）磁性载体的真比重为2.5-4.5，在1000×（103/4 pi）×A / m（1000奥斯特）为15-60Am 2 / kg（emu）的磁场中测量的磁化σ1000 / g），剩余磁化σr为0.1-20Am 2 / kg（emu / g），电阻率为5×10 11 -5×10 15欧姆·厘米。 （b）第一树脂具有包含亚甲基单元（-CH 2 - ）的聚合物链。 （c）第二树脂具有至少氟烷基单元，亚甲基单元（-CH 2 - ）和酯单元。 （d）载体芯表面涂覆有（i）第二树脂和至少具有氨基和亚甲基单元的偶联剂的混合物，或（ii）至少具有氨基的偶联剂和 亚甲基单元，然后与第二树脂。

公开(公告)号：US5116711A

公开(公告)日：1992-05-26

申请号：US504696

申请日：1990-04-05

申请人： Hiroyuki Kobayashi ,  Mitsuru Uchida ,  Kenji Okado

发明人： Hiroyuki Kobayashi ,  Mitsuru Uchida ,  Kenji Okado

IPC分类号： G03G9/08 ,  G03G9/087 ,  G03G9/09 ,  G03G9/10 ,  G03G9/113 ,  G03G13/01 ,  G03G15/01

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.

公开(公告)号：US4640882A

公开(公告)日：1987-02-03

申请号：US628839

申请日：1984-07-09

申请人： Yasuo Mitsuhashi ,  Masaki Uchiyama ,  Kazunori Murakawa ,  Kenji Okado

发明人： Yasuo Mitsuhashi ,  Masaki Uchiyama ,  Kazunori Murakawa ,  Kenji Okado

IPC分类号： G03G9/08 ,  G03G5/147 ,  G03G9/097 ,  G03G13/08 ,  G03G13/26 ,  G03G21/10 ,  G03G9/10

CPC分类号： G03G9/09716 ,  G03G13/08

摘要： A negative latent image is formed on a photosensitive member comprising an organic photoconductive material. The negative latent image is developed with a positively chargeable developer containing positively chargeable fine silica particles adapted to the organic photosensitive member. The developed image is transferred to a transfer material and the residual toner on the photosensitive member is removed. Thus, copied images without fog can be obtained successively.

摘要翻译： 在包含有机光电导材料的感光构件上形成负的潜像。 负性潜像用含有适用于有机感光构件的带正电荷的微细二氧化硅颗粒的带正电荷的显影剂显影。 将显影的图像转印到转印材料上，并且去除感光构件上的残留调色剂。 因此，可以连续地获得没有雾的复制图像。

公开(公告)号：US4590140A

公开(公告)日：1986-05-20

申请号：US658779

申请日：1984-10-09

申请人： Yasuo Mitsuhashi ,  Masanori Takenouchi ,  Hatsuo Tajima ,  Masaki Uchiyama ,  Motoo Urawa ,  Kenji Okado

发明人： Yasuo Mitsuhashi ,  Masanori Takenouchi ,  Hatsuo Tajima ,  Masaki Uchiyama ,  Motoo Urawa ,  Kenji Okado

IPC分类号： G03G15/09 ,  G03G9/083 ,  G03G9/113 ,  G03G13/09 ,  G03G13/08

CPC分类号： G03G9/083 ,  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; forming a thin layer of the toner electrically charged on the toner carrying member, wherein the magnetic particles have been treated with a substance A having a position opposite to that of the toner in the triboelectric series with the material constituting at least the surface of the toner carrying member as the standard substance and with a substance B having a position between the substance A and the toner in the triboelectric series.

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; 形成在调色剂承载构件上带电的调色剂薄层，其中已经用具有与摩擦系列中的调色剂的位置相反的位置的物质A处理磁性颗粒，其中至少构成调色剂表面的材料 携带部件作为标准物质，物质B具有物质A和摩擦系列中的调色剂之间的位置。