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    Organic photoreceptor, image forming apparatus and process cartridge
    1.
    发明授权
    Organic photoreceptor, image forming apparatus and process cartridge 有权
    有机感光体，成像装置和处理盒

    公开(公告)号：US08404417B2

    公开(公告)日：2013-03-26

    申请号：US12988506

    申请日：2009-07-09

    申请人： Toshiyuki Fujita ,  Hirofumi Hayata ,  Takeshi Ishida ,  Masahiko Kurachi ,  Seisuke Maeda ,  Seijiro Takahashi

    发明人： Toshiyuki Fujita ,  Hirofumi Hayata ,  Takeshi Ishida ,  Masahiko Kurachi ,  Seisuke Maeda ,  Seijiro Takahashi

    IPC分类号： G03G5/00

    CPC分类号： G03G5/14704 ,  G03G5/14734 ,  G03G5/14786 ,  G03G5/14791 ,  G03G5/14795

    摘要： In the present invention, disclosed is an organic photoreceptor comprising a conductive support and provided thereon, a photosensitive layer and a protective layer provided on the photosensitive layer, the protective layer formed with alumina particles each comprising a reactive organic group. Also provided is an organic photoreceptor with which electrophotographic images having high durability together with high image quality can be obtained by improving a wear property of the organic photoreceptor up to the same level as that of an amorphous silicon photoreceptor, as well as by improving image flow and image blur which are easy to be generated at high temperature and high humidity.

    摘要翻译： 在本发明中，公开了一种有机感光体，其包含导电性支持体，在其上设置有感光层和设置在感光层上的保护层，保护层由氧化铝颗粒形成，每个氧化铝粒子均包含反应性有机基团。 还提供了一种有机感光体，其具有高耐久性的电子照相图像以及高图像质量可以通过将有机感光体的磨损性能提高到与非晶硅感光体相同的水平，以及通过改善图像流动来获得 以及容易在高温高湿下产生的图像模糊。

    Electrophotographic photoreceptor, image forming apparatus, and method for image formation
    8.
    发明授权
    Electrophotographic photoreceptor, image forming apparatus, and method for image formation 有权
    电子照相感光体，图像形成装置和图像形成方法

    公开(公告)号：US08354212B2

    公开(公告)日：2013-01-15

    申请号：US12988770

    申请日：2009-09-17

    申请人： Hirofumi Hayata ,  Takeshi Ishida ,  Masahiko Kurachi ,  Toshiyuki Fujita ,  Seisuke Maeda ,  Seijiro Takahashi

    发明人： Hirofumi Hayata ,  Takeshi Ishida ,  Masahiko Kurachi ,  Toshiyuki Fujita ,  Seisuke Maeda ,  Seijiro Takahashi

    IPC分类号： G03G15/02

    CPC分类号： G03G5/14791 ,  G03G5/14704 ,  G03G5/14786

    摘要： Disclosed is an electrophotogaphic photoreceptor that causes little or no abrasion-derived uneven image density and does not cause scratches and image defects attributable to the occurrence of scratches even after a large volume, for example, exceeding 1,000,000 sheets of printing, and that does not cause image blurring even after printing in an environment of a high-temperature and a high-relative humidity (RH) respectively exceeding 30° C. and 80%. The electrophotographic photoreceptor comprises an electroconductive support and at least a photosensitive layer and a surface layer provided on the electroconductive support and is characterized in that the surface layer contains at least a compound obtained by reacting a polymerizable compound containing a methacryl group with particles containing a functional group reactive with the methacryl group and, in the polymerizable compound, the ratio between the number of methacryl groups and the molecular weight (number of methacryl groups/molecular weight) is not less than 0.0055.

    摘要翻译： 公开了几乎不产生或不产生磨损的不均匀图像浓度的电子照相感光体，即使在大体积（例如）超过1,000,000张印刷后也不会引起由于划痕的发生而引起的划痕和图像缺陷，并且不会引起 甚至在分别超过30℃和80％的高温和高相对湿度（RH）的环境下进行印刷后的图像模糊。 电子照相感光体包含导电性支持体和至少一层感光层和设置在导电性载体上的表面层，其特征在于，表面层至少含有通过使包含甲基丙烯酰基的聚合性化合物与含有官能团 与甲基丙烯酰基反应的基团，并且在聚合性化合物中，甲基丙烯酰基的数量与分子量（甲基丙烯酰基的数量/分子量）的比例为0.0055以上。

    Electrophotographic Photoreceptor, Image Forming Apparatus, and Method for Image Formation
    9.
    发明申请
    Electrophotographic Photoreceptor, Image Forming Apparatus, and Method for Image Formation 有权
    电子照相光感受器，成像装置和图像形成方法

    公开(公告)号：US20110038651A1

    公开(公告)日：2011-02-17

    申请号：US12988770

    申请日：2009-09-17

    申请人： Hirofumi Hayata ,  Takeshi Ishida ,  Masahiko Kurachi ,  Toshiyuki Fujita ,  Seisuke Maeda ,  Seijiro Takahashi

    发明人： Hirofumi Hayata ,  Takeshi Ishida ,  Masahiko Kurachi ,  Toshiyuki Fujita ,  Seisuke Maeda ,  Seijiro Takahashi

    IPC分类号： G03G15/02

    CPC分类号： G03G5/14791 ,  G03G5/14704 ,  G03G5/14786

    摘要： Disclosed is an electrophotogaphic photoreceptor that causes little or no abrasion-derived uneven image density and does not cause scratches and image defects attributable to the occurrence of scratches even after a large volume, for example, exceeding 1,000,000 sheets of printing, and that does not cause image blurring even after printing in an environment of a high-temperature and a high-relative humidity (RH) respectively exceeding 30° C. and 80%. The electrophotographic photoreceptor comprises an electroconductive support and at least a photosensitive layer and a surface layer provided on the electroconductive support and is characterized in that the surface layer contains at least a compound obtained by reacting a polymerizable compound containing a methacryl group with particles containing a functional group reactive with the methacryl group and, in the polymerizable compound, the ratio between the number of methacryl groups and the molecular weight (number of methacryl groups/molecular weight) is not less than 0.0055.

    摘要翻译： 公开了几乎不产生或不产生磨损的不均匀图像浓度的电子照相感光体，即使在大体积（例如）超过1,000,000张印刷后也不会引起由于划痕的发生而引起的划痕和图像缺陷，并且不会引起 甚至在分别超过30℃和80％的高温和高相对湿度（RH）的环境下进行印刷后的图像模糊。 电子照相感光体包含导电性支持体和至少一层感光层和设置在导电性载体上的表面层，其特征在于，表面层至少含有通过使包含甲基丙烯酰基的聚合性化合物与含有官能团 与甲基丙烯酰基反应的基团，并且在聚合性化合物中，甲基丙烯酰基的数量与分子量（甲基丙烯酰基的数量/分子量）的比例为0.0055以上。