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1. 发明授权

US08354212B2 Electrophotographic photoreceptor, image forming apparatus, and method for image formation 有权
标题翻译：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。

2. 发明授权

US08163456B2 Image forming method and image forming apparatus 有权
标题翻译：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。

3. 发明申请

US20110038651A1 Electrophotographic Photoreceptor, Image Forming Apparatus, and Method for Image Formation 有权
标题翻译：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。

4. 发明授权

US08557486B2 Organic photoreceptor, manufacturing method of organic photoreceptor, and image forming apparatus 有权
标题翻译：有机感光体，有机感光体的制造方法以及成像装置
公开(公告)号：US08557486B2
公开(公告)日：2013-10-15
申请号：US12620935
申请日：2009-11-18
申请人： Takeshi Ishida , Hirofumi Hayata , Masahiko Kurachi , Toshiyuki Fujita , Seisuke Maeda , Seijiro Takahashi
发明人： Takeshi Ishida , Hirofumi Hayata , Masahiko Kurachi , Toshiyuki Fujita , Seisuke Maeda , Seijiro Takahashi
IPC分类号： G03G5/147
CPC分类号： G03G5/14704 , G03G5/1473 , G03G5/14734 , G03G5/14773 , G03G15/751
摘要： An organic photoreceptor having a photosensitive layer, an electric conductive support, and a protective layer is disclosed, in which the protective layer comprises a composition produced by reacting tin oxide particles an acryloyl or methacryloyl group on their surface with a compound having an acryloyl or methacryloyl group. A production method of the same, an image forming apparatus and a process cartridge using the same are also disclosed.
摘要翻译：公开了一种具有感光层，导电性支持体和保护层的有机感光体，其中保护层包括通过使表面上的氧化锡颗粒与丙烯酰基或甲基丙烯酰基反应而制备的组合物与具有丙烯酰基或甲基丙烯酰基组。还公开了其制造方法，图像形成装置和使用其的处理盒。

5. 发明授权

US08084172B2 Organic photoreceptor, image forming apparatus, process cartridge, and color image forming apparatus 有权
标题翻译：有机感光体，成像装置，处理盒和彩色图像形成装置
公开(公告)号：US08084172B2
公开(公告)日：2011-12-27
申请号：US12433982
申请日：2009-05-01
申请人： Masahiko Kurachi , Hirofumi Hayata , Toshiyuki Fujita
发明人： Masahiko Kurachi , Hirofumi Hayata , Toshiyuki Fujita
IPC分类号： G03G5/00
CPC分类号： G03G5/14734 , G03G5/14704 , G03G5/14739 , G03G5/14791 , G03G2215/00957
摘要： An organic photoreceptor comprising a photosensitive layer on a conductive substrate and a protective layer on the photosensitive layer, wherein the protective layer is a surface layer prepared via reaction curing of a compound having a radical polymerizable, curable functional group using a polymerization initiators and the content of the polymerization initiator detected in the photosensitive layer is at most 5,000 ppm.
摘要翻译：一种有机感光体，其包含导电性基板上的感光层和感光层上的保护层，其中，保护层为通过使用聚合引发剂的具有自由基聚合性固化性官能团的化合物的反应固化而制备的表层，在感光层中检测到的聚合引发剂为至多5000ppm。

6. 发明授权

US08404417B2 Organic photoreceptor, image forming apparatus and process cartridge 有权
标题翻译：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。

7. 发明授权

US08318396B2 Organic photoreceptor and preparation method thereof 有权
标题翻译：有机感光体及其制备方法
公开(公告)号：US08318396B2
公开(公告)日：2012-11-27
申请号：US12845990
申请日：2010-07-29
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 , G03G5/14717 , G03G5/14734
摘要： An organic photoreceptor is disclosed, comprising, on an electrically conductive support, a photosensitive layer and a protective layer containing metal oxide particles produced by a plasma method, and the protective layer being formed by curing a composition containing the metal oxide particles and a curable compound. There is also disclosed a preparation method of the organic photoreceptor.
摘要翻译：公开了一种有机感光体，其在导电性载体上包含感光层和含有通过等离子体法制造的金属氧化物颗粒的保护层，该保护层是通过使包含金属氧化物颗粒和可固化化合物的组合物。还公开了有机感光体的制备方法。

8. 发明授权

US08071266B2 Electrophotographic photoreceptor, and process cartridge and image forming apparatus employing the same 有权
标题翻译：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。

9. 发明授权

US08481233B2 Organic photoreceptor, image forming apparatus and process cartridge 有权
标题翻译：有机感光体，成像装置和处理盒
公开(公告)号：US08481233B2
公开(公告)日：2013-07-09
申请号：US12057445
申请日：2008-03-28
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： G03C1/73
CPC分类号： G03G5/0614 , G03G5/0542 , G03G5/0564 , G03G5/0696 , G03G5/14704 , G03G5/14791
摘要： Disclosed is an organic photoreceptor comprising on an electrically conductive support a light-sensitive layer and a surface layer, wherein the surface layer comprises a resin formed by curing a photocurable compound containing at least one polar group and at least one photocurable-functional group and a particulate metal oxide having a water absorption of 0.1 to 10%. There are also disclosed an image forming apparatus and a process cartridge.
摘要翻译：公开了一种在导电载体上包含感光层和表面层的有机感光体，其中表面层包括通过固化含有至少一个极性基团和至少一个光固化官能团的光固化性化合物形成的树脂和吸水率为0.1〜10％的颗粒状金属氧化物。还公开了一种图像形成装置和处理盒。

10. 发明授权

US08202675B2 Electrophotographic photoreceptor, image forming apparatus, and process cartridge 有权
标题翻译：电子照相感光体，成像设备和处理盒
公开(公告)号：US08202675B2
公开(公告)日：2012-06-19
申请号：US12706452
申请日：2010-02-16
申请人： Masahiko Kurachi , Hirofumi Hayata , Takeshi Ishida , Toshiyuki Fujita , Seisuke Maeda , Seijiro Takahashi
发明人： Masahiko Kurachi , Hirofumi Hayata , Takeshi Ishida , Toshiyuki Fujita , Seisuke Maeda , Seijiro Takahashi
IPC分类号： G03G15/04
CPC分类号： G03G5/14773 , G03G5/0507 , G03G5/0578 , G03G5/14704 , G03G15/751
摘要： An electrophotographic photoreceptor is provided with a conductive support; a photosensitive layer provided on the conductive support; and a surface layer provided on the photosensitive layer, wherein the surface layer contains a reaction product of surface-treated inorganic fine particles which are applied with a surface treatment with a metal oxide and a surface treatment with a compound having a polymerizable functional group.
摘要翻译：电子照相感光体设置有导电支撑体; 设置在所述导电支撑件上的感光层; 以及设置在感光层上的表面层，其中表面层包含经表面处理的金属氧化物表面处理的无机细颗粒和用具有可聚合官能团的化合物进行表面处理的反应产物。

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