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    Electrophotographic photoreceptor, and process cartridge and image forming apparatus employing the same
    1.
    发明授权
    Electrophotographic photoreceptor, and process cartridge and image forming apparatus employing the same 有权
    电子照相感光体，以及处理盒和使用其的成像设备

    公开(公告)号：US08071266B2

    公开(公告)日：2011-12-06

    申请号：US11861395

    申请日：2007-09-26

    申请人： Kunihiro Ogura ,  Hirofumi Hayata ,  Masahiko Kurachi ,  Toshiyuki Fujita

    发明人： Kunihiro Ogura ,  Hirofumi Hayata ,  Masahiko Kurachi ,  Toshiyuki Fujita

    IPC分类号： G03G5/14

    CPC分类号： G03G5/0539 ,  G03G5/0592 ,  G03G5/0596 ,  G03G5/14726 ,  G03G5/14791 ,  G03G5/14795 ,  G03G2215/00957

    摘要： An objective is to provide a high releasing electrophotographic photoreceptor exhibiting lubricity and mechanical strength. The photoreceptor possessing a photosensitive layer on a conductive support, wherein an outermost layer of the photoreceptor comprises a fluorine resin represented by the following formula. wherein each of X, Y and Z represents a hydrogen atom, a halogen atom, a halogen-substituted alkyl group or a halogen-substituted alkoxy group; at least one of X, Y and Z represents a fluorine atom; each of R4, R5, R6 and R7 represents a hydrogen atom, a halogen atom or a halogen-substituted alkyl group; each of R1, R2, and R3 represents a hydrogen atom, a halogen atom or a halogen-substituted alkyl group; at least one of R1, R2, and R3 represents a fluorine atom; n1 represents an integer of 1-8000; and n2 represents an integer of 0-4000.

    摘要翻译： 目的是提供具有润滑性和机械强度的高释放电子照相感光体。 感光体在导电性载体上具有感光层，其中感光体的最外层包含由下式表示的氟树脂。 其中X，Y和Z各自表示氢原子，卤素原子，卤素取代的烷基或卤素取代的烷氧基; X，Y和Z中的至少一个表示氟原子; R4，R5，R6和R7各自表示氢原子，卤素原子或卤素取代的烷基; R 1，R 2和R 3各自表示氢原子，卤素原子或卤素取代的烷基; R 1，R 2和R 3中的至少一个表示氟原子; n1表示1-8000的整数; n2表示0〜4000的整数。

    Electrophotographic toner, and image forming method and image forming apparatus employing the same
    3.
    发明授权
    Electrophotographic toner, and image forming method and image forming apparatus employing the same 有权
    电子照相调色剂和图像形成方法以及使用其的图像形成装置

    公开(公告)号：US07977021B2

    公开(公告)日：2011-07-12

    申请号：US12047380

    申请日：2008-03-13

    申请人： Toshiyuki Fujita ,  Hirofumi Hayata ,  Masahiko Kurachi ,  Kunihiro Ogura

    发明人： Toshiyuki Fujita ,  Hirofumi Hayata ,  Masahiko Kurachi ,  Kunihiro Ogura

    IPC分类号： G03G15/04

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

    摘要： An objective is to provide an electrophotographic photoreceptor having a protective layer in which no unevenness is generated in a coated layer even though a coating solution containing a large addition amount of metal oxide is coated, mechanical strength of a protective layer is high; productivity is high with long life of the coating solution because of no sedimentation of metal oxide, electrical resistivity and mechanical strength are satisfactory, and metal oxide generating no coated layer defect together with no light scattering caused by dispersion failure is dispersed, and also to provide an image forming method and an image forming apparatus employing the electrophotographic photoreceptor. Also disclosed is an electrophotographic photoreceptor possessing a conductive support, at least a photosensitive layer and a protective layer, wherein the protective layer comprises rutile type titanium dioxide and anatase type titanium dioxide.

    摘要翻译： 目的是提供一种具有保护层的电子照相感光体，即使涂布含有大量添加量的金属氧化物的涂布溶液，保护层的机械强度高，在涂层中也不会产生不均匀性; 生产率高，涂层溶液寿命长，因为金属氧化物没有沉降，电阻率和机械强度都令人满意，分散失效引起的无光散射的金属氧化物不会发生涂层缺陷，而且不产生散射散射，并且还提供 图像形成方法和使用电子照相感光体的图像形成装置。 还公开了具有导电载体，至少感光层和保护层的电子照相感光体，其中保护层包含金红石型二氧化钛和锐钛矿型二氧化钛。

    Electrophotographic photoreceptor, image forming apparatus, and method for image formation
    4.
    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。

    Image forming method and image forming apparatus
    5.
    发明授权
    Image forming method and image forming apparatus 有权
    图像形成方法和图像形成装置

    公开(公告)号：US08163456B2

    公开(公告)日：2012-04-24

    申请号：US12410528

    申请日：2009-03-25

    申请人： Hirofumi Hayata ,  Masahiko Kurachi ,  Toshiyuki Fujita

    发明人： Hirofumi Hayata ,  Masahiko Kurachi ,  Toshiyuki Fujita

    IPC分类号： G03G13/08

    CPC分类号： G03G9/09791 ,  G03G5/14704 ,  G03G5/14786 ,  G03G5/14791 ,  G03G9/09708

    摘要： An image forming method and image forming apparatus based on the application thereof wherein comet-like deposits do not appear on the surface of the photoreceptor even after prolonged use of small-diameter toner, and there is no dropout or damage on the photoreceptor surface in the image forming process using an intermediate transfer member. This image forming method contains a process wherein the toner developed on an electrophotographic photoreceptor is transferred onto an intermediate transfer member, and the toner contains at least a metallic oxide and metallic soap added as external additive agents, and the protective layer contains a resin component obtained by reaction of at least a curable compound, and alumina particles.

    摘要翻译： 一种基于其应用的图像形成方法和图像形成装置，其中即使在长时间使用小直径调色剂之后，彗星状沉积物也不会出现在感光体的表面上，并且在感光体表面上没有脱落或损伤 使用中间转印部件的图像形成处理。 该图像形成方法包括其中在电子照相感光体上显影的调色剂转印到中间转印部件上，并且调色剂至少含有作为外部添加剂添加的金属氧化物和金属皂，并且保护层含有获得的树脂成分 通过至少可固化化合物和氧化铝颗粒的反应。

    Electrophotographic Photoreceptor, Image Forming Apparatus, and Method for Image Formation
    6.
    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。

    Organic photoreceptor, image forming apparatus and process cartridge
    9.
    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。