公开(公告)号：US06346356B1

公开(公告)日：2002-02-12

申请号：US09572642

申请日：2000-05-17

申请人： Manabu Ohno ,  Toshiyuki Ugai ,  Ryoichi Fujita ,  Shinya Yachi ,  Yasushi Katsuta ,  Kenichi Nakayama

发明人： Manabu Ohno ,  Toshiyuki Ugai ,  Ryoichi Fujita ,  Shinya Yachi ,  Yasushi Katsuta ,  Kenichi Nakayama

IPC分类号： G03G9097

CPC分类号： G03G9/09733 ,  G03G9/0806 ,  G03G9/0821 ,  G03G9/0825 ,  G03G9/0827 ,  G03G9/097

摘要： A toner is comprised of toner particles containing at least a binder resin, a colorant, a wax component and an oxycarboxylic acid. The toner satisfies the following conditions: 1.05≦A/B≦3.00, and 0.15≦B≦3.50 wherein A (mg) is a weight of oxycarboxylic acid extracted with methanol from 1 g of the toner, and B (mg) is a weight of oxycarboxylic acid extracted with an aqueous 0.1 mol/liter sodium hydroxide solution from 1 g of the toner.

摘要翻译： 调色剂由至少含有粘合剂树脂，着色剂，蜡组分和羟基羧酸的调色剂颗粒构成。 调色剂满足以下条件：A（mg）是由1g调色剂用甲醇提取的羟基羧酸的重量，B（mg）是用0.1mol / l氢氧化钠水溶液提取的羟基羧酸的重量 从1克调色剂。

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：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：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：US06187495B1

公开(公告)日：2001-02-13

申请号：US09386217

申请日：1999-08-31

申请人： Tatsuhiko Chiba ,  Kazuo Yoshinaga ,  Satoshi Yasuda ,  Hiroaki Kawakami ,  Ryoichi Fujita ,  Shinya Yachi ,  Koichi Tomiyama

发明人： Tatsuhiko Chiba ,  Kazuo Yoshinaga ,  Satoshi Yasuda ,  Hiroaki Kawakami ,  Ryoichi Fujita ,  Shinya Yachi ,  Koichi Tomiyama

IPC分类号： G03G909

CPC分类号： G03G9/0806 ,  G03G9/091 ,  G03G9/0912

摘要： A yellow toner suitable for electrophotography is formed by dispersing a yellow colorant mixture in a binder resin. The yellow colorant mixture is formed of at least a pigment of formula (1) or (2) below, and a dye of formula (3) below: wherein R1 and R2 independently denote a hydrogen atom, a chlorine atom or —CH3, and R3 denotes wherein R1, R2, R3 and R4 independently denote a hydrogen atom, —COOH, —COOCH3, —CF3, —CONH(C6H4)CONH2, or

摘要翻译： 通过将黄色着色剂混合物分散在粘合剂树脂中，形成适用于电子照相的黄色调色剂。 黄色着色剂混合物由至少下述式（1）或（2）的颜料和下式（3）的染料形成：其中R1和R2独立地表示氢原子，氯原子或-CH3，以及 R3表示其中R1，R2，R3和R4独立地表示氢原子，-COOH，-COOCH3，-CF3，-CONH（C6H4）CONH2，或

公开(公告)号：US06312862B1

公开(公告)日：2001-11-06

申请号：US09434401

申请日：1999-11-05

申请人： Kenji Okado ,  Ryoichi Fujita ,  Yushi Mikuriya ,  Shinya Yachi ,  Kazumi Yoshizaki

发明人： Kenji Okado ,  Ryoichi Fujita ,  Yushi Mikuriya ,  Shinya Yachi ,  Kazumi Yoshizaki

IPC分类号： G03G9113

CPC分类号： G03G9/097 ,  G03G9/0819 ,  G03G9/10 ,  G03G9/107 ,  G03G9/113

摘要： A two-component type developer has a negatively chargeable toner having toner particles and an external additive and a magnetic-fine-particle-dispersed resin carrier. The magnetic-fine-particle-dispersed resin carrier has composite particles containing at least inorganic compound particles and a binder resin. The inorganic compound particles have been surface-treated with a lipophilic-treating agent having at least one type of functional group (A) selected from the group consisting of an epoxy group, an amino group, a mercapto group, an organic acid group, an ester group, a ketone group, an alkyl halide group and an aldehyde group, or a mixture of the agent. The composite particles have been surface-coated with at least one type of coupling agent having at least one type of functional group (B) different from the functional group (A) the lipophilic-treating agent. The functional group (B) the coupling agent has being a functional group or groups selected from the group consisting of an epoxy group, an amino group and a mercapto group. The negatively chargeable toner has a weight-average particle diameter of from 3 &mgr;m to 9 &mgr;m.

摘要翻译： 双组分型显影剂具有带负电荷的调色剂，其具有调色剂颗粒和外部添加剂和磁性微粒分散树脂载体。 磁性粒子分散树脂载体具有至少含有无机化合物粒子和粘合剂树脂的复合粒子。 无机化合物颗粒已经用具有至少一种选自环氧基，氨基，巯基，有机酸基，官能团（A）中的至少一种官能团（A）的亲脂性处理剂进行表面处理 酯基，酮基，烷基卤基和醛基，或者该试剂的混合物。 复合颗粒已经用至少一种类型的具有至少一种类型的官能团（B）的不同于亲脂性处理剂的官能团（A）的偶联剂进行表面涂覆。 官能团（B）偶联剂是选自环氧基，氨基和巯基的官能团或基团。 负带电性调色剂的重均粒径为3〜9μm。

公开(公告)号：US5747209A

公开(公告)日：1998-05-05

申请号：US640077

申请日：1996-04-30

申请人： Tsuyoshi Takiguchi ,  Kenji Okado ,  Masaaki Taya ,  Ryoichi Fujita ,  Makoto Kanbayashi ,  Kohji Inaba ,  Wakashi Iida ,  Kazunori Kato ,  Tetsuya Ida ,  Shinya Yachi

发明人： Tsuyoshi Takiguchi ,  Kenji Okado ,  Masaaki Taya ,  Ryoichi Fujita ,  Makoto Kanbayashi ,  Kohji Inaba ,  Wakashi Iida ,  Kazunori Kato ,  Tetsuya Ida ,  Shinya Yachi

IPC分类号： G03G9/083 ,  G03G9/087 ,  G03G9/09 ,  G03G9/097 ,  G03G9/00

CPC分类号： G03G9/09783 ,  G03G9/09733

摘要： A toner for developing electrostatic images is formed of toner particles comprising (a) a binder resin, (b) a colorant or magnetic material, (c) an aromatic hydroxycarboxylic acid (A), and (d) a metal compound of the aromatic hydroxycarboxylic acid (A). The aromatic hydroxycarboxylic acid (A) and the metal compound of the aromatic hydroxycarboxylic acid (A) are contained in a weight ratio of 1:99 to 10:90. As a result of co-inclusion of a small amount of the aromatic hydroxycarboxylic acid (A) in addition to the metal compound thereof, the resultant toner is provided with a quick chargeability in a low humidity environment and an improved level of triboelectric charge in a high humidity environment, presumably because of the stabilization effect of the small amount of the aromatic hydroxycarboxylic acid (A) on the metal compound thereof.

摘要翻译： 用于显影静电图像的调色剂由调色剂颗粒形成，包括（a）粘合剂树脂，（b）着色剂或磁性材料，（c）芳族羟基羧酸（A），和（d）芳族羟基羧酸的金属化合物 酸（A）。 芳香族羟基羧酸（A）和芳香族羟基羧酸（A）的金属化合物的重量比为1:99〜10:90。 作为除了其金属化合物之外少量芳族羟基羧酸（A）共混物的结果，所得到的调色剂在低湿度环境中具有快速带电性，并且提供了一种改善的摩擦带电量 高湿度环境，大概是因为少量芳族羟基羧酸（A）对其金属化合物的稳定作用。

公开(公告)号：US5885742A

公开(公告)日：1999-03-23

申请号：US943698

申请日：1997-10-03

申请人： Kenji Okado ,  Toshiyuki Ugai ,  Ryoichi Fujita ,  Tsuyoshi Takiguchi

发明人： Kenji Okado ,  Toshiyuki Ugai ,  Ryoichi Fujita ,  Tsuyoshi Takiguchi

IPC分类号： G03G9/113

CPC分类号： G03G9/1136 ,  G03G9/1139

摘要： A carrier for electrophotography has carrier particles. Each carrier particle has a carrier core and a silicone resin coat layer that covers the carrier core. The carrier particle has silicon atoms and carrier atoms on its surface in the ratio that satisfies the condition of Si/C=0.1 to 2.0 as the number of atoms present on the carrier particle surface as measured by X-ray photoelectron spectroscopy, and from 0.1% by number to 5% by number of metal atoms are present on the carrier particle surface. Additionally, there is a two-component developer for developing electrostatic images which consists of a toner and the carrier. An image forming method in which the two-component developer having the toner and the carrier is transported to a developing zone which is defined by a latent image carried on a latent image bearing member to develop the latent image. A voltage is applied to the developer to direct the toner from the latent image bearing member to a member carrying the developer. A second voltage directs the toner from the developer toward the latent image and a third voltage developer the latent image using the toner of the two-component developer.

摘要翻译： 电子照相用载体具有载体颗粒。 每个载体颗粒具有载体芯和覆盖载体芯的硅树脂涂层。 载体颗粒的表面上具有硅原子和载体原子，其比例满足Si / C = 0.1〜2.0的条件，作为通过X射线光电子能谱测定的载体颗粒表面上存在的原子数，0.1 在载体颗粒表面上存在数量％至5％的金属原子数。 此外，存在用于显影静电图像的双组分显影剂，其由调色剂和载体组成。 一种图像形成方法，其中具有调色剂和载体的双组分显影剂被输送到由承载在潜像承载部件上的潜像所限定的显影区域以显影潜像。 向显影剂施加电压以将调色剂从潜像承载部件引导到携带显影剂的部件上。 第二电压使用双组分显影剂的调色剂将调色剂从显影剂引导到潜像，第三电压显影剂潜像。

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。