公开(公告)号：US06824938B2

公开(公告)日：2004-11-30

申请号：US10196185

申请日：2002-07-17

申请人： Hiroe Kizaki ,  Mamoru Nozomi ,  Tetsuo Ozawa ,  Kozo Ishio

发明人： Hiroe Kizaki ,  Mamoru Nozomi ,  Tetsuo Ozawa ,  Kozo Ishio

IPC分类号： G03G514

CPC分类号： G03G5/0696 ,  G03G5/142

摘要： An electrophotographic photoreceptor having at least an undercoat layer and a photosensitive layer on an electroconductive substrate, wherein at least one layer of the undercoat layer contains a naphthalocyanine compound of the following formula (1): where, in the formula (1), M represents two hydrogen atoms, or a metal atom, provided that the metal atom may have a ligand, and each of X1, X2, X3 and X4 is a hydrogen atom or a substituent.

摘要翻译： 一种在导电性基体上具有至少一层底涂层和感光层的电子照相感光体，其中至少一层底涂层含有下式（1）的萘菁化合物：其中，在式（1）中，M表示 两个氢原子或金属原子，条件是金属原子可以具有配体，X 1，X 2，X 3和X 4中的每一个是氢原子或取代基。

公开(公告)号：US08974998B2

公开(公告)日：2015-03-10

申请号：US13232021

申请日：2011-09-14

申请人： Teruyuki Mitsumori ,  Kozo Ishio ,  Hiroaki Takamura ,  Masaya Oota ,  Shiho Sano ,  Takeshi Oowada ,  Masakazu Sugihara ,  Teruki Senokuti ,  Shiro Yasutomi ,  Yumi Hirabaru

发明人： Teruyuki Mitsumori ,  Kozo Ishio ,  Hiroaki Takamura ,  Masaya Oota ,  Shiho Sano ,  Takeshi Oowada ,  Masakazu Sugihara ,  Teruki Senokuti ,  Shiro Yasutomi ,  Yumi Hirabaru

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

CPC分类号： G03G13/08 ,  G03G9/0819 ,  G03G15/08

摘要： A method of forming an image including an electrophotographic photoreceptor and a toner, wherein a photosensitive layer in the electrophotographic photoreceptor includes an undercoat layer including metal oxide particles, a charge generation layer including hydroxygallium phthalocyanine, and a charge transport layer, and the toner contains toner matrix particles formed in an aqueous medium; the toner has a volume median diameter (Dv50) of from 4.0 μm to 7.0 μm; and the relationship between the volume median diameter (Dv50) and the percentage in number (Dns) of toner particles having a particle diameter of from 2.00 μm to 3.56 μm satisfies—0.0517EXP(22.4/Dv50)≦Dns≦0.233EXP(17.3/Dv50) where Dv50 is the volume median diameter (μm) of the toner, and Dns is the percentage in number of toner particles having a particle diameter of from 2.00 μm to 3.56 μm.

摘要翻译： 一种形成包括电子照相感光体和调色剂的图像的方法，其中电子照相感光体中的感光层包括包含金属氧化物颗粒的底涂层，包含羟基镓酞菁的电荷产生层和电荷传输层，并且调色剂含有调色剂 在水性介质中形成的基质颗粒; 调色剂的体积中值粒径（Dv50）为4.0μm〜7.0μm; 体积中值粒径（Dv50）与粒径为2.00μm〜3.56μm的调色剂粒子的数量（Dns）的关系满足-0.0517EXP（22.4 / Dv50）＆nlE; Dns＆NlE; 0.233EXP（17.3 / Dv50）其中Dv50是调色剂的体积中值直径（μm），Dns是粒径为2.00μm至3.56μm的调色剂颗粒数的百分比。

公开(公告)号：US08323861B2

公开(公告)日：2012-12-04

申请号：US12301109

申请日：2007-05-18

申请人： Teruyuki Mitsumori ,  Kozo Ishio ,  Hiroe Fuchigami

发明人： Teruyuki Mitsumori ,  Kozo Ishio ,  Hiroe Fuchigami

IPC分类号： G03G15/04 ,  G03G5/14

CPC分类号： G03G5/0507 ,  G03G5/043 ,  G03G5/047 ,  G03G5/0514 ,  G03G5/0525 ,  G03G5/0614 ,  G03G5/0668 ,  G03G5/0672 ,  G03G5/0696 ,  G03G5/104 ,  G03G5/142 ,  G03G5/144

摘要： An electrophotographic photoreceptor having high sensitivity and low residual potential is provided. The electrophotographic photoreceptor includes an undercoat layer containing metal oxide particles and a binder resin on an electroconductive substrate, and a photosensitive layer disposed on the undercoat layer, wherein the metal oxide particles have a volume average particle diameter of 0.1 μm or less and a 90% cumulative particle diameter of 0.3 μm or less which are measured by a dynamic light-scattering method in a liquid of the undercoat layer dispersed in a solvent mixture of methanol and 1-propanol at a weight ratio of 7:3; and the photosensitive layer contains crystalline phthalocyanine showing at least one distinct main diffraction peak at a Bragg angle (2θ±0.2°) of 27.0° to 29.0° in an X-ray diffraction spectrum.

摘要翻译： 提供具有高灵敏度和低残留电位的电子照相感光体。 电子照相感光体包括在导电性基体上含有金属氧化物粒子和粘合剂树脂的底涂层和设置在底涂层上的感光层，其中金属氧化物粒子的体积平均粒径为0.1μm以下，90％ 通过动态光散射法在分散在甲醇和1-丙醇的溶剂混合物中的底涂层的液体中以重量比7:3测量的累积粒径为0.3μm或更小; 并且感光层含有结晶酞菁，其在X射线衍射光谱中显示在布拉格角（2θ=±0.2°）为27.0°至29.0°的至少一个不同的主要衍射峰。

公开(公告)号：US20100158561A1

公开(公告)日：2010-06-24

申请号：US12300943

申请日：2007-05-18

申请人： Teruyuki Mitsumori ,  Kozo Ishio ,  Hiroe Fuchigami ,  Susumu Taguchi ,  Shunichiro Kurihara

发明人： Teruyuki Mitsumori ,  Kozo Ishio ,  Hiroe Fuchigami ,  Susumu Taguchi ,  Shunichiro Kurihara

IPC分类号： G03G21/16 ,  G03G5/14 ,  G03G15/00

CPC分类号： G03G15/75 ,  G03G5/10 ,  G03G5/144

摘要： An electrophotographic photoreceptor having high performance that hardly generates image defects such as black spots, color spots, and interference fringes is provided. The electrophotographic photoreceptor includes an undercoat layer containing metal oxide particles and a binder resin on an electroconductive substrate having a maximum height surface roughness Rz in the range of 0.8≦Rz≦2 μm, and a photosensitive layer disposed on the undercoat layer, wherein the metal oxide particles have a volume average particle diameter of 0.1 μm or less and a 90% cumulative particle diameter of 0.3 μm or less which are measured by a dynamic light-scattering method in a liquid containing the undercoat layer dispersed in a solvent mixture of methanol and 1-propanol at a weight ratio of 7:3.

摘要翻译： 提供了几乎不产生图像缺陷如黑点，色斑和干涉条纹的高性能的电子照相感光体。 电子照相感光体包括在导电性基体上含有金属氧化物粒子和粘合剂树脂的底涂层，其最大高度表面粗糙度Rz在0.8＆lt; 1lE; Rz＆amp; NlE;2μm的范围内，以及设置在底涂层上的感光层，其中 金属氧化物粒子的体积平均粒径为0.1μm以下，90％的累积粒径为0.3μm以下，其通过动态光散射法在含有分散在甲醇溶剂混合物中的底涂层的液体中测定 和1-丙醇，重量比为7:3。

公开(公告)号：US08906586B2

公开(公告)日：2014-12-09

申请号：US12301361

申请日：2007-05-18

申请人： Teruyuki Mitsumori ,  Kozo Ishio ,  Hiroe Fuchigami

发明人： Teruyuki Mitsumori ,  Kozo Ishio ,  Hiroe Fuchigami

IPC分类号： G03G15/00 ,  B01F15/02 ,  B01F15/06 ,  G03G5/047 ,  B01F3/12 ,  G03G5/06 ,  B01F7/18 ,  B02C17/16 ,  G03G5/05

CPC分类号： B01F7/18 ,  B01F3/1221 ,  B01F15/0201 ,  B01F15/026 ,  B01F15/065 ,  B02C17/16 ,  G03G5/047 ,  G03G5/0525 ,  G03G5/0696

摘要： A coating fluid for photosensitive-layer formation having high productivity and stability and a process thereof are provided. Also provided are a high-performance electrophotographic photoreceptor and an image-forming apparatus which are capable of forming high-quality images even in various use environments and are less apt to cause image defects such as black spots or color spots. The objects are accomplished with a process for producing a coating fluid which is for forming a photosensitive layer of an electrophotographic photoreceptor and comprises a charge-generating material and a binder resin, wherein a dispersing medium having an average particle diameter in the range of from 1.0 μm to 350 μm is used as a dispersing medium for dispersing the charge-generating material in the coating fluid for photosensitive-layer formation. The coating fluid for photosensitive-layer formation produced by this process is preferable as a photosensitive layer of an electrophotographic photoreceptor. The charge-generating material preferably comprises a phthalocyanine pigment and the phthalocyanine pigment in the coating fluid preferably has a 50% cumulative particle diameter (D50) of 0.13 μm or smaller as determined by a dynamic light scattering method.

摘要翻译： 提供了具有高生产率和稳定性的感光层形成用涂布液及其工艺。 还提供了即使在各种使用环境中也能够形成高质量图像并且不太可能引起诸如黑点或彩色斑点的图像缺陷的高性能电子照相感光体和图像形成装置。 目的是通过一种制备用于形成电子照相感光体的感光层的涂布液的方法来实现的，并且包括电荷产生材料和粘合剂树脂，其中平均粒径在1.0的范围内的分散介质 使用μm至350μm作为用于将电荷产生材料分散在用于感光层形成的涂布液中的分散介质。 通过该方法生产的用于光敏层形成的涂布液优选作为电子照相感光体的感光层。 电荷产生材料优选包含酞菁颜料，并且涂布液中的酞菁颜料优选具有通过动态光散射法测定的0.13μm以下的50％累积粒径（D50）。

公开(公告)号：US08871413B2

公开(公告)日：2014-10-28

申请号：US12679233

申请日：2008-09-19

申请人： Yuzo Kaneko ,  Masaya Oota ,  Shiho Sano ,  Masakazu Sugihara ,  Teruki Senokuchi ,  Shiro Yasutomi ,  Takeshi Owada ,  Yumi Hirabaru ,  Takuya Nishikiori ,  Teruyuki Mitsumori ,  Kozo Ishio ,  Hiroaki Takamura

发明人： Yuzo Kaneko ,  Masaya Oota ,  Shiho Sano ,  Masakazu Sugihara ,  Teruki Senokuchi ,  Shiro Yasutomi ,  Takeshi Owada ,  Yumi Hirabaru ,  Takuya Nishikiori ,  Teruyuki Mitsumori ,  Kozo Ishio ,  Hiroaki Takamura

IPC分类号： G03G9/08 ,  G03G9/093 ,  G03G9/087

CPC分类号： G03G9/0827 ,  G03G9/0806 ,  G03G9/0819 ,  G03G9/0821 ,  G03G9/0823 ,  G03G9/08782 ,  G03G9/09392 ,  G03G2215/0614 ,  G03G2221/0005

摘要： An object of the invention is to provide a toner which is effective in improving image quality while inhibiting white-background fouling, residual-image phenomenon (ghost), blurring (suitability for solid printing), and the like that occur depending on the proportion of a fine powder having a particle diameter not larger than a specific value, and which has satisfactory removability in cleaning, mitigates problems concerning fouling, etc. in long-term use even on a high-speed printer, and attains excellent image stability. Another object is to provide an image-forming apparatus and a toner cartridge each employing the toner. The invention provides a toner for electrostatic-image development satisfying all of the following (1) to (4) or a toner for electrostatic-image development which is a toner containing a charge control agent and satisfying all of the following (5) to (7). The invention further provides an image-forming apparatus and a toner cartridge each employing the toner.(1) To have a volume-median diameter (Dv50) of from 4.0 μm to 7.5 μm.(2) To have an average degree of circularity of 0.93 or higher.(3) A volume-median diameter (Dv50) of the toner and population number % of toner particles having a particle diameter of from 2.00 μm to 3.56 μm (Dns) in the toner satisfy the relationship Dns≦0.233 EXP(17.3/Dv50).(4) To have a coefficient of variation in number of 24.0% or lower.(5) To have a volume-median diameter (Dv50) of from 4.0 μm to 7.5 μm.(6) A volume-median diameter (Dv50) of the toner and population number % of toner particles having a particle diameter of from 2.00 μm to 3.56 μm (Dns) in the toner satisfy the relationship Dns≦0.233 EXP(17.3/Dv50).(7) When the charge control agent on the toner surface is cleaned, the resultant depressions have an average diameter of 500 nm or smaller.

公开(公告)号：US20100316412A1

公开(公告)日：2010-12-16

申请号：US12849499

申请日：2010-08-03

申请人： Teruyuki MITSUMORI ,  Kozo Ishio ,  Hiroaki Takamura ,  Masaya Oota ,  Shiho Sano ,  Takeshi Oowada ,  Masakazu Sugihara ,  Teruki Senokuti ,  Shiro Yasutomi ,  Yumi Hirabaru

发明人： Teruyuki MITSUMORI ,  Kozo Ishio ,  Hiroaki Takamura ,  Masaya Oota ,  Shiho Sano ,  Takeshi Oowada ,  Masakazu Sugihara ,  Teruki Senokuti ,  Shiro Yasutomi ,  Yumi Hirabaru

IPC分类号： G03G15/00

CPC分类号： G03G13/08 ,  G03G9/0819 ,  G03G15/08

摘要： An image forming apparatus comprising an electrophotographic photoreceptor having a photosensitive layer on an electroconductive substrate, and a toner for developing an electrostatic charge image, wherein the photosensitive layer of the electrophotographic photoreceptor contains a phthalocyanine obtained via an acid paste step; the toner for developing an electrostatic charge image is a toner for developing an electrostatic charge image containing toner matrix particles formed in an aqueous medium; the toner has a volume median diameter (Dv50) of from 4.0 μm to 7.0 μm; and the relationship between the volume median diameter (Dv50) and the percentage in number (Dns) of toner particles having a particle diameter of from 2.00 μm to 3.56 μm satisfies the following formula (1): Dns≦0.233 EXP(17.3/Dv50)  (1)

公开(公告)号：US20090257776A1

公开(公告)日：2009-10-15

申请号：US12301088

申请日：2007-05-18

申请人： Teruyuki Mitsumori ,  Kozo Ishio ,  Hiroe Fuchigami

发明人： Teruyuki Mitsumori ,  Kozo Ishio ,  Hiroe Fuchigami

IPC分类号： G03G15/00 ,  G03G5/04

CPC分类号： G03G5/0614 ,  G03G5/0525 ,  G03G5/104 ,  G03G5/144

摘要： Provided is an electrophotographic photoreceptor that is excellent in electric characteristics and can form a high-quality image having reduced ghosting. In the electrophotographic photoreceptor including an undercoat layer containing metal oxide particles and a binder resin on an electroconductive support, and a photosensitive layer disposed on the undercoat layer, the metal oxide particles have a volume average particle diameter of 0.1 μm or less and a 90% cumulative particle diameter of 0.3 μm or less which are measured by a dynamic light-scattering method in a liquid containing the undercoat layer dispersed in a solvent mixture of methanol and 1-propanol at a weight ratio of 7:3; and the photosensitive layer contains a compound represented by the following Formula (I): where Formula (I), Ar1 to Ar6 each independently represent an aromatic moiety that may have a substituent; X represents an organic moiety that may have a substituent; and n1 and n2 each independently represent an integer of 0 to 2.

摘要翻译： 本发明提供电特性优异的电子照相感光体，能够形成具有减少重影的高品质图像。 在包含在导电载体上含有金属氧化物颗粒和粘合剂树脂的底涂层的电子照相感光体和设置在底涂层上的感光层中，金属氧化物颗粒的体积平均粒径为0.1μm或更小，90％ 通过动态光散射法在含有分散在甲醇和1-丙醇的溶剂混合物中的底涂层的液体中以7:3的重量比测量的累积粒径为0.3μm或更小的累积粒径; 感光层含有由下式（I）表示的化合物：式（I）中，Ar 1〜Ar 6各自独立地表示可以具有取代基的芳香族部分。 X表示可以具有取代基的有机部分; n1和n2各自独立地表示0〜2的整数。

公开(公告)号：US20090208250A1

公开(公告)日：2009-08-20

申请号：US12301121

申请日：2007-05-18

申请人： Teruyuki Mitsumori ,  Kozo Ishio ,  Hiroe Fuchigami ,  Hiroaki Takamura ,  Yasunori Kawai

发明人： Teruyuki Mitsumori ,  Kozo Ishio ,  Hiroe Fuchigami ,  Hiroaki Takamura ,  Yasunori Kawai

IPC分类号： G03G15/00 ,  G03G15/04

CPC分类号： G03G5/144 ,  G03G5/056 ,  G03G5/0564 ,  G03G5/0614 ,  G03G5/0616

摘要： An electrophotographic photoreceptor having high sensitivity and hardly affected by the transfer in an electrophotographic process is provided. The electrophotographic photoreceptor includes an undercoat layer containing metal oxide particles and a binder resin and a photosensitive layer disposed on the undercoat layer, wherein the metal oxide particles have a volume average particle diameter of 0.1 μm or less and a 90% cumulative particle diameter of 0.3 μm or less which are measured by a dynamic light-scattering method in a liquid of the undercoat layer dispersed in a solvent mixture of methanol and 1-propanol at a weight ratio of 7:3, and the photosensitive layer contains a binder resin having an ester bond.

摘要翻译： 提供了具有高灵敏度且几乎不受电子照相方法转印影响的电子照相感光体。 电子照相感光体包括含有金属氧化物颗粒和粘合剂树脂的底涂层和设置在底涂层上的感光层，其中金属氧化物颗粒的体积平均粒径为0.1μm以下，90％的累积粒径为0.3 通过动态光散射法在分散在甲醇和1-丙醇的溶剂混合物中的底涂层的液体中以重量比7:3进行测量的感光层含有具有 酯键。

公开(公告)号：US20090202274A1

公开(公告)日：2009-08-13

申请号：US12301361

申请日：2007-05-18

申请人： Teruyuki Mitsumori ,  Kozo Ishio ,  Hiroe Fuchigami

发明人： Teruyuki Mitsumori ,  Kozo Ishio ,  Hiroe Fuchigami

IPC分类号： G03G15/00 ,  G03G5/00 ,  G03G5/06 ,  G03G15/06 ,  G03G15/02

CPC分类号： B01F7/18 ,  B01F3/1221 ,  B01F15/0201 ,  B01F15/026 ,  B01F15/065 ,  B02C17/16 ,  G03G5/047 ,  G03G5/0525 ,  G03G5/0696

摘要： A coating fluid for photosensitive-layer formation having high productivity and stability and a process thereof are provided. Also provided are a high-performance electrophotographic photoreceptor and an image-forming apparatus which are capable of forming high-quality images even in various use environments and are less apt to cause image defects such as black spots or color spots. The objects are accomplished with a process for producing a coating fluid which is for forming a photosensitive layer of an electrophotographic photoreceptor and comprises a charge-generating material and a binder resin, wherein a dispersing medium having an average particle diameter in the range of from 1.0 μm to 350 μm is used as a dispersing medium for dispersing the charge-generating material in the coating fluid for photosensitive-layer formation. The coating fluid for photosensitive-layer formation produced by this process is preferable as a photosensitive layer of an electrophotographic photoreceptor. The charge-generating material preferably comprises a phthalocyanine pigment and the phthalocyanine pigment in the coating fluid preferably has a 50% cumulative particle diameter (D50) of 0.13 μm or smaller as determined by a dynamic light scattering method.

摘要翻译： 提供了具有高生产率和稳定性的感光层形成用涂布液及其工艺。 还提供了即使在各种使用环境中也能够形成高质量图像并且不太可能引起诸如黑点或彩色斑点的图像缺陷的高性能电子照相感光体和图像形成装置。 目的是通过一种制备用于形成电子照相感光体的感光层的涂布液的方法来实现的，并且包括电荷产生材料和粘合剂树脂，其中平均粒径在1.0的范围内的分散介质 作为用于将电荷产生材料分散在用于感光层形成的涂布液中的分散介质，使用了350微米。 通过该方法生产的用于光敏层形成的涂布液优选作为电子照相感光体的感光层。 电荷产生材料优选包含酞菁颜料，并且涂布液中的酞菁颜料优选具有通过动态光散射法测定的0.13μm或更小的累积粒径（D50）的50％。