公开(公告)号：US08597864B2

公开(公告)日：2013-12-03

申请号：US13148438

申请日：2009-02-16

申请人： Shinjiro Suzuki ,  Yoichi Nakamura ,  Seizo Kitagawa ,  Fengqiang Zhu ,  Kazuki Nebashi

发明人： Shinjiro Suzuki ,  Yoichi Nakamura ,  Seizo Kitagawa ,  Fengqiang Zhu ,  Kazuki Nebashi

IPC分类号： G03G5/00

CPC分类号： G03G5/056 ,  G03G5/0564 ,  G03G5/0578 ,  G03G5/0589 ,  G03G5/0592

摘要： Provided is a photoreceptor for electrophotography, a process for producing the photoreceptor, and an electrophotographic apparatus that includes the photoreceptor. The photoreceptor has a photosensitive layer which contains a resin binder that is a copolymerized polyallylate resin. An electrophotographic apparatus having a photoreceptor drum that includes this photoreceptor has a reduced surface frictional resistance throughout the printing period from the beginning to after printing, thus reducing the amount of surface wear while producing satisfactory images.

摘要翻译： 本发明提供电子照相用感光体，感光体的制造方法以及包含感光体的电子照相设备。 感光体具有包含作为共聚聚烯丙基酯树脂的树脂粘合剂的感光层。 具有包括该感光体的感光鼓的电子照相设备在从开始到打印之后的整个打印期间具有降低的表面摩擦阻力，因此在产生令人满意的图像的同时减少了表面磨损量。

公开(公告)号：US20120058422A1

公开(公告)日：2012-03-08

申请号：US13148438

申请日：2009-02-16

申请人： Shinjiro Suzuki ,  Yoichi Nakamura ,  Seizo Kitagawa ,  Fengqiang Zhu ,  Kazuki Nebashi

发明人： Shinjiro Suzuki ,  Yoichi Nakamura ,  Seizo Kitagawa ,  Fengqiang Zhu ,  Kazuki Nebashi

IPC分类号： G03G15/00 ,  G03G5/047 ,  G03G5/043 ,  G03G5/07

CPC分类号： G03G5/056 ,  G03G5/0564 ,  G03G5/0578 ,  G03G5/0589 ,  G03G5/0592

摘要： Provided is a photoreceptor for electrophotography, a process for producing the photoreceptor, and an electrophotographic apparatus that includes the photoreceptor. The photoreceptor has a photosensitive layer which contains a resin binder that is a copolymerized polyallylate resin. An electrophotographic apparatus having a photoreceptor drum that includes this photoreceptor has a reduced surface frictional resistance throughout the printing period from the beginning to after printing, thus reducing the amount of surface wear while producing satisfactory images.

摘要翻译： 本发明提供电子照相用感光体，感光体的制造方法以及包含感光体的电子照相设备。 感光体具有包含作为共聚聚烯丙基酯树脂的树脂粘合剂的感光层。 具有包括该感光体的感光鼓的电子照相设备在从开始到打印之后的整个打印期间具有降低的表面摩擦阻力，因此在产生令人满意的图像的同时减少了表面磨损量。

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：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：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：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：US09904186B2

公开(公告)日：2018-02-27

申请号：US14232900

申请日：2011-08-05

申请人： Seizo Kitagawa ,  Yasushi Tanaka ,  Shinjiro Suzuki ,  Hiroshi Emori ,  Kazuki Nebashi

发明人： Seizo Kitagawa ,  Yasushi Tanaka ,  Shinjiro Suzuki ,  Hiroshi Emori ,  Kazuki Nebashi

IPC分类号： G03G5/047 ,  G03G5/05 ,  G03G5/06 ,  B05D1/18 ,  G03G5/04

CPC分类号： G03G5/047 ,  B05D1/18 ,  G03G5/04 ,  G03G5/0503 ,  G03G5/0525 ,  G03G5/0564 ,  G03G5/0696

摘要： A layered, positively-charged electrophotographic photoreceptor, a method for manufacturing the photoreceptor and an electrophotographic apparatus using the photoreceptor are disclosed. The layered, positively-charged electrophotographic photoreceptor includes a conductive support on which is provided a sequential stack composed of a charge transport layer containing at least a first hole transport material and a first binder resin; and a charge generation layer containing at least a charge generation material, a second hole transport material, an electron transport material, and a second binder resin, wherein the charge generation layer and the charge transport layer have a total amount of residual solvents that is 50 μg/cm2 or less. The photoreceptor is highly sensitive, highly durable, and has excellent image qualities including low image defects from cracks generated due to image memory or contact contamination. The photoreceptor is applicable to a high-resolution and high-speed positively-charged electrophotographic apparatuses and provides excellent operational stability.

公开(公告)号：US20130316276A1

公开(公告)日：2013-11-28

申请号：US13985037

申请日：2012-02-14

申请人： Kazuki Nebashi ,  Shinjiro Suzuki ,  Seizo Kitagawa

发明人： Kazuki Nebashi ,  Shinjiro Suzuki ,  Seizo Kitagawa

IPC分类号： G03G15/00

CPC分类号： G03G5/071 ,  G03G5/0542 ,  G03G5/0589 ,  G03G5/0696

摘要： An electrophotographic photoconductor including, in the order recited: a conductive substrate; an undercoat layer provided on the conductive substrate; and a photoconductive layer provided on the undercoat layer and containing at least a phthalocyanine compound as a charge generation material and, as a resin binder, a polyvinyl acetal resin composed of a repeating unit represented by formula (1): where, in formula (1), R is a hydrogen atom, a methyl group, an ethyl group or a propyl group; x, y and z represent mol % of the respective structural units, where x+y+z=100; n is an integer from 1 to 5; a degree of acetalization (x+z) is 86 to 99 mol %; and a molar ratio (x:z) of the structural units is 95:5 to 50:50.

摘要翻译： 一种电摄影光电导体，包括：导电基片; 设置在导电性基板上的底涂层; 和设置在底涂层上并且至少含有酞菁化合物作为电荷产生材料的光电导层，作为树脂粘合剂，由式（1）表示的重复单元构成的聚乙烯醇缩醛树脂：其中，在式（1）中， ），R为氢原子，甲基，乙基或丙基; x，y和z表示各结构单元的摩尔％，其中x + y + z = 100; n为1〜5的整数; 缩醛化度（x + z）为86〜99摩尔％。 结构单元的摩尔比（x：z）为95:5〜50:50。

公开(公告)号：US20140199619A1

公开(公告)日：2014-07-17

申请号：US14232900

申请日：2011-08-05

申请人： Seizo Kitagawa ,  Yasushi Tanaka ,  Shinjiro Suzuki ,  Hiroshi Emori ,  Kazuki Nebashi

发明人： Seizo Kitagawa ,  Yasushi Tanaka ,  Shinjiro Suzuki ,  Hiroshi Emori ,  Kazuki Nebashi

IPC分类号： G03G15/00 ,  B05D5/12

CPC分类号： G03G5/047 ,  B05D1/18 ,  G03G5/04 ,  G03G5/0503 ,  G03G5/0525 ,  G03G5/0564 ,  G03G5/0696

摘要： A layered, positively-charged electrophotographic photoreceptor, a method for manufacturing the photoreceptor and an electrophotographic apparatus using the photoreceptor are disclosed. The layered, positively-charged electrophotographic photoreceptor includes a conductive support on which is provided a sequential stack composed of a charge transport layer containing at least a first hole transport material and a first binder resin; and a charge generation layer containing at least a charge generation material, a second hole transport material, an electron transport material, and a second binder resin, wherein the charge generation layer and the charge transport layer have a total amount of residual solvents that is 50 μg/cm2 or less. The photoreceptor is highly sensitive, highly durable, and has excellent image qualities including low image defects from cracks generated due to image memory or contact contamination. The photoreceptor is applicable to a high-resolution and high-speed positively-charged electrophotographic apparatuses and provides excellent operational stability.

摘要翻译： 公开了层状的带正电荷的电子照相感光体，感光体的制造方法和使用感光体的电子照相设备。 层状的带正电荷的电子照相感光体包括导电支撑体，其上设置有由至少含有第一空穴传输材料和第一粘合剂树脂的电荷输送层构成的顺序叠层; 以及至少包含电荷产生材料，第二空穴传输材料，电子传输材料和第二粘合剂树脂的电荷产生层，其中电荷产生层和电荷输送层具有总量为50的残留溶剂 μg/ cm2以下。 感光体高度敏感，高度耐用，并且具有优异的图像质量，包括由于图像记忆或接触污染而产生的裂纹的低图像缺陷。 感光体适用于高分辨率和高速正电照相设备，并提供优异的操作稳定性。

公开(公告)号：US09081313B2

公开(公告)日：2015-07-14

申请号：US13985037

申请日：2012-02-14

申请人： Kazuki Nebashi ,  Shinjiro Suzuki ,  Seizo Kitagawa

发明人： Kazuki Nebashi ,  Shinjiro Suzuki ,  Seizo Kitagawa

IPC分类号： G03G15/02 ,  G03G15/04 ,  G03G5/07 ,  G03G5/05 ,  G03G5/06

CPC分类号： G03G5/071 ,  G03G5/0542 ,  G03G5/0589 ,  G03G5/0696

摘要： An electrophotographic photoconductor including, in the order recited: a conductive substrate; an undercoat layer provided on the conductive substrate; and a photoconductive layer provided on the undercoat layer and containing at least a phthalocyanine compound as a charge generation material and, as a resin binder, a polyvinyl acetal resin composed of a repeating unit represented by formula (1): where, in formula (1), R is a hydrogen atom, a methyl group, an ethyl group or a propyl group; x, y and z represent mol % of the respective structural units, where x+y+z=100; n is an integer from 1 to 5; a degree of acetalization (x+z) is 86 to 99 mol %; and a molar ratio (x:z) of the structural units is 95:5 to 50:50.

摘要翻译： 一种电摄影光电导体，包括：导电基片; 设置在导电性基板上的底涂层; 和设置在底涂层上并且至少含有酞菁化合物作为电荷产生材料的光电导层，作为树脂粘合剂，由式（1）表示的重复单元构成的聚乙烯醇缩醛树脂：其中，在式（1）中， ），R为氢原子，甲基，乙基或丙基; x，y和z表示相应结构单元的摩尔％，其中x + y + z = 100; n为1〜5的整数; 缩醛化度（x + z）为86〜99摩尔％。 结构单元的摩尔比（x：z）为95:5〜50:50。