公开(公告)号：US08735031B2

公开(公告)日：2014-05-27

申请号：US13132031

申请日：2009-11-27

申请人： Kazuki Nebashi ,  Yoichi Nakamura ,  Ikuo Takaki ,  Seizo Kitagawa ,  Shinjiro Suzuki

发明人： Kazuki Nebashi ,  Yoichi Nakamura ,  Ikuo Takaki ,  Seizo Kitagawa ,  Shinjiro Suzuki

IPC分类号： G03G5/14

CPC分类号： G03G5/142 ,  G03G5/144

摘要： An electrophotographic photoreceptor includes an electroconductive substrate; an undercoat layer provided on the electroconductive substrate and composed of: metal oxide fine particles including particles of at least one metal oxide and at least one organic compound provided on the particles of the at least one metal oxide as a surface treatment; and a copolymer resin synthesized by copolymerization of essential constituent monomers composed of a dicarboxylic acid, a diol, a triol and a diamine; and a photosensitive layer laminated on the undercoat layer. The undercoat layer permits (a) attaining stable electric potential characteristics in all environments ranging from low temperature and low humidity environments to high temperature and high humidity environments, (b) suppressing the occurrence of printing defects and density differences, and (c) simultaneously attaining transfer restorability and restorability from intense light-induced fatigue even in a wide variety of usages and operation environments.

摘要翻译： 电子照相感光体包括导电基片; 设置在导电性基体上的由下述构成的底涂层构成：包含至少一种金属氧化物的颗粒的金属氧化物微粒和至少一种金属氧化物颗粒上提供的至少一种有机化合物作为表面处理; 以及由二羧酸，二醇，三醇和二胺组成的必需构成单体共聚而合成的共聚物树脂; 和层压在底涂层上的感光层。 底涂层允许（a）在从低温和低湿环境到高温和高湿度环境的所有环境中获得稳定的电势特性，（b）抑制印刷缺陷和密度差异的发生，和（c）同时获得 即使在各种各样的使用和操作环境中，也可以将恢复性和恢复性从强烈的光诱导疲劳中转移出来。

公开(公告)号：US07723000B2

公开(公告)日：2010-05-25

申请号：US11641949

申请日：2006-12-20

申请人： Shinjirou Suzuki ,  Yoichi Nakamura ,  Ikuo Takaki ,  Kazuki Nebashi

发明人： Shinjirou Suzuki ,  Yoichi Nakamura ,  Ikuo Takaki ,  Kazuki Nebashi

IPC分类号： G03G5/14

CPC分类号： G03G5/144 ,  G03G5/142

摘要： An electrophotographic photoconductor includes an undercoat layer and a photosensitive layer sequentially provided on a conductive substrate. The undercoat layer is mainly composed of a resin and contains a metal oxide. The resin is provided by mixing and polymerizing raw materials of aromatic dicarboxylic acid in a range of 0.1 to 10 mol %, two or more types of dicarboxylic acid other than the aromatic dicarboxylic acid, two or more types of diamine, and at least one type of cyclic amide compound. The resin exhibits an acid value and a base value each of at most 6.0 KOH mg/g. Advantageously, generation of secondary aggregates in the undercoat layer, which result in image defects such as black spots and fogging on a white field, is suppressed.

摘要翻译： 电子照相感光体包括依次设置在导电性基板上的底涂层和感光层。 底涂层主要由树脂构成，含有金属氧化物。 通过将芳族二羧酸的原料在0.1〜10摩尔％的范围内混合并聚合而得到的树脂，2芳香族二羧酸以外的2种以上的二羧酸，2种以上的二胺和至少1种 的环酰胺化合物。 该树脂的酸值和基本值均为6.0KOHmg / g以下。 有利地，抑制了在底涂层中产生二次聚集体，这导致图像缺陷如黑点和白色场上的起雾。

公开(公告)号：US09081319B2

公开(公告)日：2015-07-14

申请号：US12999308

申请日：2009-12-14

申请人： Shinjirou Suzuki ,  Yoichi Nakamura ,  Ikuo Takaki ,  Seizo Kitagawa ,  Kazuki Nebashi

发明人： Shinjirou Suzuki ,  Yoichi Nakamura ,  Ikuo Takaki ,  Seizo Kitagawa ,  Kazuki Nebashi

IPC分类号： G03G5/04 ,  G03G5/14

CPC分类号： G03G5/142 ,  G03G5/144

摘要： Provided is an electrophotographic photoconductor that has good coating solution stability and metal oxide dispersibility, is free of image defects including ground fogging and black spots, and affords good image characteristics in various environments, as well as a manufacturing method therefore and a device including the same. The electrophotographic photoconductor includes a conductive substrate; an undercoat layer; and a photosensitive layer. The undercoat layer contains, as a main component, a resin obtained by polymerizing, as starting materials, an aromatic dicarboxylic acid, at least one aliphatic dicarboxylic acid having 8 or more carbon atoms, and at least one diamine having a cycloalkane structure, and further contains a metal oxide. The aromatic dicarboxylic acid in the resin is present in an amount that ranges from 0.1 to 10 mol %, and the resin has an acid value and a base value that are each no greater than 10 KOH mg/g.

摘要翻译： 提供了具有良好的涂布溶液稳定性和金属氧化物分散性的电子照相感光体，没有包括地雾和黑点的图像缺陷，并且在各种环境中提供良好的图像特性，因此其制造方法和包括其的装置 。 电子照相感光体包括导电性基板; 底漆层; 和感光层。 作为主要成分，底涂层含有通过使作为原料的芳香族二羧酸，至少一种碳原子数8以上的脂肪族二羧酸和至少一种具有环烷烃结构的二胺的原料聚合而得到的树脂，进一步 含有金属氧化物。 树脂中的芳族二羧酸的存在量为0.1〜10摩尔％，树脂的酸值和碱值不大于10KOHmg / g。

公开(公告)号：US08404414B2

公开(公告)日：2013-03-26

申请号：US12990544

申请日：2009-04-02

申请人： Ikuo Takaki ,  Yoichi Nakamura ,  Seizo Kitagawa ,  Kazuki Nebashi ,  Fengqiang Zhu

发明人： Ikuo Takaki ,  Yoichi Nakamura ,  Seizo Kitagawa ,  Kazuki Nebashi ,  Fengqiang Zhu

IPC分类号： G03G5/04

CPC分类号： G03G5/0564 ,  G03G2215/00957 ,  G03G2215/00987

摘要： Electrophotographic photoconductor including a conductive substrate; and a photosensitive layer provided on the conductive substrate and including at least a charge generation material; a charge transport material; and a resin binder including a copolymer polyarylate resin represented by general formula (I) below: and manufacturing method therefore. Good images with less cracking occurrence are obtained during recycling of a photosensitive drum and peripheral members thereof that includes the electrophotographic photoconductor, and also when a liquid development process is employed.

摘要翻译： 电子照相感光体包括导电性基材; 以及设置在所述导电基板上并且至少包括电荷产生材料的感光层; 电荷输送材料; 和含有下述通式（I）表示的共聚物聚芳酯树脂的树脂粘合剂及其制造方法。 在包括电子照相感光体的感光鼓及其周边部件的再循环期间，以及采用液体显影处理时，都能获得具有较少裂纹发生的良好图像。

公开(公告)号：US20120034556A1

公开(公告)日：2012-02-09

申请号：US13132031

申请日：2009-11-27

申请人： Kazuki Nebashi ,  Yoichi Nakamura ,  Seizo Kitagawa ,  Ikuo Takaki ,  Shinjiro Suzuki

发明人： Kazuki Nebashi ,  Yoichi Nakamura ,  Seizo Kitagawa ,  Ikuo Takaki ,  Shinjiro Suzuki

IPC分类号： G03G5/04

CPC分类号： G03G5/142 ,  G03G5/144

摘要： An electrophotographic photoreceptor includes an electroconductive substrate; an undercoat layer provided on the electroconductive substrate and composed of: metal oxide fine particles including particles of at least one metal oxide and at least one organic compound provided on the particles of the at least one metal oxide as a surface treatment; and a copolymer resin synthesized by copolymerization of essential constituent monomers composed of a dicarboxylic acid, a diol, a triol and a diamine; and a photosensitive layer laminated on the undercoat layer. The undercoat layer permits (a) attaining stable electric potential characteristics in all environments ranging from low temperature and low humidity environments to high temperature and high humidity environments, (b) suppressing the occurrence of printing defects and density differences, and (c) simultaneously attaining transfer restorability and restorability from intense light-induced fatigue even in a wide variety of usages and operation environments.

摘要翻译： 电子照相感光体包括导电基片; 设置在导电性基体上的由下述构成的底涂层构成：包含至少一种金属氧化物的颗粒的金属氧化物微粒和至少一种金属氧化物颗粒上提供的至少一种有机化合物作为表面处理; 以及由二羧酸，二醇，三醇和二胺组成的必需构成单体共聚而合成的共聚物树脂; 和层压在底涂层上的感光层。 底涂层允许（a）在从低温和低湿环境到高温和高湿度环境的所有环境中获得稳定的电势特性，（b）抑制印刷缺陷和密度差异的发生，和（c）同时获得 即使在各种各样的使用和操作环境中，也可以将恢复性和恢复性从强烈的光诱导疲劳中转移出来。

公开(公告)号：US20110189603A1

公开(公告)日：2011-08-04

申请号：US12990544

申请日：2009-04-02

申请人： Ikuo Takaki ,  Yoichi Nakamura ,  Seizo Kitagawa ,  Kazuki Nebashi ,  Fengqiang Zhu

发明人： Ikuo Takaki ,  Yoichi Nakamura ,  Seizo Kitagawa ,  Kazuki Nebashi ,  Fengqiang Zhu

IPC分类号： G03G5/04

CPC分类号： G03G5/0564 ,  G03G2215/00957 ,  G03G2215/00987

摘要： Electrophotographic photoconductor including a conductive substrate; and a photosensitive layer provided on the conductive substrate and including at least a charge generation material; a charge transport material; and a resin binder including a copolymer polyarylate resin represented by general formula (I) below: and manufacturing method therefore. Good images with less cracking occurrence are obtained during recycling of a photosensitive drum and peripheral members thereof that includes the electrophotographic photoconductor, and also when a liquid development process is employed.

摘要翻译： 电子照相感光体包括导电性基材; 以及设置在所述导电基板上并且至少包括电荷产生材料的感光层; 电荷输送材料; 和含有下述通式（I）表示的共聚物聚芳酯树脂的树脂粘合剂及其制造方法。 在包括电子照相感光体的感光鼓及其周边部件的再循环期间，以及采用液体显影处理时，都能获得具有较少裂纹发生的良好图像。

公开(公告)号：US08354210B2

公开(公告)日：2013-01-15

申请号：US12225888

申请日：2007-04-05

申请人： Ikuo Takaki ,  Yoichi Nakamura ,  Kazuki Nebashi

发明人： Ikuo Takaki ,  Yoichi Nakamura ,  Kazuki Nebashi

IPC分类号： G03G5/047 ,  G03G5/14 ,  G03G5/147

CPC分类号： G03G5/0517 ,  G03G5/142 ,  G03G5/14708

摘要： An electrophotographic photoconductor that stabilizes electrical performances and prevents generation of image faults such as memories, irrespective of types of organic materials of resin binder and charge transport material, and variation of temperature and humidity of the operation environment. An electrophotographic photoconductor includes at least a photosensitive layer formed over a conductive substrate, wherein the photosensitive layer contains a cyclohexane dimethanol-diaryl ester compound represented by the formula (I): in formula (I), each of R1 through R10 represents independently, a hydrogen atom, a halogen atom, a substituted or unsubstituted alkyl group of carbon number of from 1 to 5, a substituted or unsubstituted aryl group, or a substituted or unsubstituted alkoxy group of carbon number of from 1 to 5.

摘要翻译： 不影响树脂粘合剂和电荷输送材料的有机材料的类型以及操作环境的温度和湿度的变化的电子照相感光体，其稳定电性能并防止图像故障的产生，例如记忆。 电子照相感光体至少包括形成在导电性基材上的感光层，其中感光层含有式（I）表示的环己烷二甲醇 - 二芳基酯化合物：式（I）中，R 1〜R 10各自独立地表示 氢原子，卤素原子，取代或未取代的碳数为1至5的烷基，取代或未取代的芳基，或取代或未取代的碳数为1至5的烷氧基。

公开(公告)号：US20110244381A1

公开(公告)日：2011-10-06

申请号：US12999308

申请日：2009-12-14

申请人： Shinjirou Suzuki ,  Yoichi Nakamura ,  Ikuo Takaki ,  Seizo Kitagawa ,  Kazuki Nebashi

发明人： Shinjirou Suzuki ,  Yoichi Nakamura ,  Ikuo Takaki ,  Seizo Kitagawa ,  Kazuki Nebashi

IPC分类号： G03G5/04

CPC分类号： G03G5/142 ,  G03G5/144

摘要： Provided is an electrophotographic photoconductor that has good coating solution stability and metal oxide dispersibility, is free of image defects including ground fogging and black spots, and affords good image characteristics in various environments, as well as a manufacturing method therefore and a device including the same. The electrophotographic photoconductor includes a conductive substrate; an undercoat layer; and a photosensitive layer. The undercoat layer contains, as a main component, a resin obtained by polymerizing, as starting materials, an aromatic dicarboxylic acid, at least one aliphatic dicarboxylic acid having 8 or more carbon atoms, and at least one diamine having a cycloalkane structure, and further contains a metal oxide. The aromatic dicarboxylic acid in the resin is present in an amount that ranges from 0.1 to 10 mol %, and the resin has an acid value and a base value that are each no greater than 10 KOH mg/g.

摘要翻译： 提供了具有良好的涂布溶液稳定性和金属氧化物分散性的电子照相感光体，没有包括地雾和黑点的图像缺陷，并且在各种环境中提供良好的图像特性，因此其制造方法和包括其的装置 。 电子照相感光体包括导电性基板; 底漆层; 和感光层。 作为主要成分，底涂层含有通过使作为原料的芳香族二羧酸，至少一种碳原子数8以上的脂肪族二羧酸和至少一种具有环烷烃结构的二胺的原料聚合而得到的树脂，进一步 含有金属氧化物。 树脂中的芳族二羧酸的存在量为0.1〜10摩尔％，树脂的酸值和碱值不大于10KOHmg / g。

公开(公告)号：US20070154827A1

公开(公告)日：2007-07-05

申请号：US11641949

申请日：2006-12-20

申请人： Shinjirou Suzuki ,  Yoichi Nakamura ,  Ikuo Takaki ,  Kazuki Nebashi

发明人： Shinjirou Suzuki ,  Yoichi Nakamura ,  Ikuo Takaki ,  Kazuki Nebashi

IPC分类号： G03G5/14

CPC分类号： G03G5/144 ,  G03G5/142

摘要： An electrophotographic photoconductor includes an undercoat layer and a photosensitive layer sequentially provided on a conductive substrate. The undercoat layer is mainly composed of a resin and contains a metal oxide. The resin is provided by mixing and polymerizing raw materials of aromatic dicarboxylic acid in a range of 0.1 to 10 mol %, two or more types of dicarboxylic acid other than the aromatic dicarboxylic acid, two or more types of diamine, and at least one type of cyclic amide compound. The resin exhibits an acid value and a base value each of at most 6.0 KOH mg/g. Advantageously, generation of secondary aggregates in the undercoat layer, which result in image defects such as black spots and fogging on a white field, is suppressed.

摘要翻译： 电子照相感光体包括依次设置在导电性基板上的底涂层和感光层。 底涂层主要由树脂构成，含有金属氧化物。 通过将芳族二羧酸的原料在0.1〜10摩尔％的范围内混合并聚合而得到的树脂，2芳香族二羧酸以外的2种以上的二羧酸，2种以上的二胺和至少1种 的环酰胺化合物。 该树脂的酸值和基本值均为6.0KOHmg / g以下。 有利地，抑制了在底涂层中产生二次聚集体，这导致图像缺陷如黑点和白色场上的起雾。

公开(公告)号：US20110183246A1

公开(公告)日：2011-07-28

申请号：US12921374

申请日：2009-07-09

申请人： Fengqiang Zhu ,  Yoichi Nakamura ,  Ikuo Takaki ,  Seizo Kitagawa ,  Shinjirou Suzuki

发明人： Fengqiang Zhu ,  Yoichi Nakamura ,  Ikuo Takaki ,  Seizo Kitagawa ,  Shinjirou Suzuki

IPC分类号： G03G5/047 ,  C07C211/43

CPC分类号： C07C211/54 ,  G03G5/0614 ,  G03G5/0668 ,  G03G5/0696

摘要： An ethylene compound having general formula (I) below: wherein R1, R2 and R3 are each independently a hydrogen atom, a halogen atom, an alkyl group of 1 to 6 carbons or an alkoxyl group of 1 to 6 carbons; R4 is an alkyl group of 1 to 3 carbons, phenyl or tolyl; and Ar is an aryl group of 7 to 20 carbons or a heterocyclic group, functions as a charge transport material in an electrophotographic photoreceptor. This compound suppresses photodeterioration, causes little light-induced fatigue, can prevent a rise in the residual potential associated with such light-induced fatigue, has stable properties as an electrophotographic photoreceptor even when used for an extended period of time, and is able to stably provide a satisfactory image.

摘要翻译： 具有通式（I）的乙烯化合物：其中R1，R2和R3各自独立地为氢原子，卤素原子，1至6个碳原子的烷基或1至6个碳原子的烷氧基; R4是1〜3个碳的烷基，苯基或甲苯基; 并且Ar为7〜20个碳原子的芳基或杂环基，作为电子照相感光体中的电荷输送材料起作用。 这种化合物抑制光老化，引起轻微的疲劳，可以防止与这种光诱导疲劳相关的残余电位的上升，即使长时间使用也具有作为电子照相感光体的稳定性能，并且能够稳定地 提供令人满意的图像。