公开(公告)号：US06316157B1

公开(公告)日：2001-11-13

申请号：US09610914

申请日：2000-07-05

申请人： Junko Yoshikawa ,  Kenji Okado ,  Masaaki Taya ,  Yushi Mikuriya ,  Kazumi Yoshizaki ,  Yasushi Katsuta ,  Kenichi Nakayama

发明人： Junko Yoshikawa ,  Kenji Okado ,  Masaaki Taya ,  Yushi Mikuriya ,  Kazumi Yoshizaki ,  Yasushi Katsuta ,  Kenichi Nakayama

IPC分类号： G03G9097

CPC分类号： G03G9/09708 ,  G03G9/0821 ,  G03G9/08755 ,  G03G9/09783

摘要： A non-metallic black toner is disclosed. The toner has toner particles containing at least a binder resin, a carbon black and an organometallic compound, and an external additive. The toner particles contain 10 to 200 ppm of at least one kind of alkali metal element and at least one kind of organometallic compound. The toner particles further contain a polyester resin. The non-metallic black toner has a weight-average particle diameter of 4 to 11 &mgr;m, the following loss tangents tan &dgr; shown by dielectric loss factor ∈″/dielectric constant ∈′ at frequencies of 5×104 Hz and 105 Hz: tan &dgr; (5×104 Hz)≦0.0125 tan &dgr; (105 Hz)≦0.0105, a Carr's flowability index of 50 or more, and a Carr's floodability index of 65 or more. Also, an image forming method is disclose using the black toner.

摘要翻译： 公开了一种非金属黑色调色剂。 调色剂具有至少含有粘合剂树脂，炭黑和有机金属化合物的调色剂颗粒和外部添加剂。 调色剂颗粒含有10-200ppm的至少一种碱金属元素和至少一种有机金属化合物。 调色剂颗粒还含有聚酯树脂。 非金属黑色调色剂的重均粒径为4〜11μm，频率为5×104Hz，105Hz时的介电损耗因子∈“/介电常数ε'表示的以下损耗正切tanδ：卡尔的流动性 指数为50以上，卡尔的防洪指数为65以上。 此外，使用黑色调色剂公开了图像形成方法。

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：US06548218B1

公开(公告)日：2003-04-15

申请号：US08492445

申请日：1995-06-19

申请人： Tsutomu Kukimoto ,  Kenji Okado ,  Shuichi Aita ,  Tsuyoshi Takiguchi

发明人： Tsutomu Kukimoto ,  Kenji Okado ,  Shuichi Aita ,  Tsuyoshi Takiguchi

IPC分类号： G03G1302

CPC分类号： G03G15/0241 ,  G03G2215/022 ,  G03G2221/183 ,  Y10S430/102

摘要： Magnetic particles for charging means disposed in contact with an electrophotographic photosensitive member for charging the electrophotographic photosensitive member based on a voltage applied thereto are provided as particles of a ferrite component represented by the following formula (1): (Fe2O3)X(A)Y(B)Z  (1), wherein A denotes at least one metal oxide component selected from the group consisting of Li2O, MnO and MgO, B denotes at least one metal oxide component different from A; X, Y and Z denote numbers representing mol ratios and satisfying the following conditions: 0.2

摘要翻译： 作为与电子照相感光构件相接触的用于充电电子照相感光构件的用于充电装置的磁性颗粒被提供为由下式（1）表示的铁氧体组分的颗粒：其中A表示至少一种金属氧化物 选自Li2O，MnO和MgO的组分，B表示与A不同的至少一种金属氧化物组分; X，Y和Z表示摩尔比的数字，满足下列条件：0.2

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：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：US6137977A

公开(公告)日：2000-10-24

申请号：US99136

申请日：1998-06-18

申请人： Kenji Okado ,  Ryoichi Fujita ,  Masanori Shida ,  Kazumi Yoshizaki

发明人： Kenji Okado ,  Ryoichi Fujita ,  Masanori Shida ,  Kazumi Yoshizaki

IPC分类号： G03G9/08 ,  G03G9/097 ,  G03G9/10 ,  G03G9/107 ,  G03G15/08

CPC分类号： G03G9/107 ,  G03G15/0853 ,  G03G9/0819 ,  G03G9/09708 ,  G03G9/10

摘要： In the image forming machine of the invention, a two-component type developer has a spherical magnetic powder dispersion type carrier, which has a weight average particle diameter of from 15 to 60 .mu.m. The external additive is present in the form of particles on the toner particle, and comprises inorganic oxide fine particles A having a shape factor SF-1 of from 100 to 130, and non-spherical inorganic oxide fine particles B, having a shape factor SF-1 larger than 150 and particles B having been obtained by combining a plurality of component particles.

摘要翻译： 在本发明的成像机中，双组分型显影剂具有球形磁粉分散型载体，其重均粒径为15至60μm。 外部添加剂以调色剂颗粒上的颗粒形式存在，并且包含形状因子SF-1为100至130的无机氧化物细颗粒A和具有形状因子SF的非球形无机氧化物细颗粒B -1大于150，颗粒B通过组合多个组分颗粒而获得。

公开(公告)号：US07016630B2

公开(公告)日：2006-03-21

申请号：US10836278

申请日：2004-05-03

申请人： Kazumi Yoshizaki ,  Kenji Okado ,  Masashige Tamura ,  Naotaka Ikeda

发明人： Kazumi Yoshizaki ,  Kenji Okado ,  Masashige Tamura ,  Naotaka Ikeda

IPC分类号： G03G15/08

CPC分类号： G03G15/0808 ,  G03G15/09 ,  G03G2215/0177

摘要： In an image forming apparatus having a powder transport mechanism including a powder container and a powder transport means which rotates relative to the powder container, the powder transport means has the rotation center substantially on the axis of the powder container, and the space between the inner wall surface of the powder container and the powder transport means is sealed with magnetic particles held by a magnetic-filed generation means. The magnetic particles have a specific saturation magnetization σs and a specific value of A×σA where the residual magnetic flux density of the magnetic-field generation means is represented by A in a specific range and the magnetization intencity of the magnetic particles in a magnetic field with the residual magnetic flux density A is represented by σA.

摘要翻译： 在具有粉末输送机构的图像形成装置中，粉末输送机构包括粉末容器和相对于粉末容器旋转的粉末输送装置，粉末输送装置具有大致在粉末容器的轴线上的旋转中心， 粉末容器的壁表面和粉末输送装置用磁场产生装置保持的磁性颗粒密封。 磁性颗粒具有特定的饱和磁化信号和Axsigma的特定值，其中磁场产生装置的剩余磁通密度由特定范围内的A表示，并且磁场强度 具有剩余磁通密度A的磁场中的磁性颗粒由σA表示。

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：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：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。