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    • 4. 发明专利
    • Electrophotographic photoreceptor, image formation apparatus and process cartridge
    • 电子照相机,图像形成装置和工艺盒
    • JP2013073023A
    • 2013-04-22
    • JP2011212031
    • 2011-09-28
    • Fuji Xerox Co Ltd富士ゼロックス株式会社
    • IWADATE YUKONUKADA KATSUMIYAMADA WATARUDOI KOJISASAKI TOMOYA
    • G03G5/147G03G5/07
    • PROBLEM TO BE SOLVED: To provide an electrophotographic photoreceptor suppressing residual potential accumulation.SOLUTION: An electrophotographic photoreceptor has a substrate and an outermost layer as follows. The outermost layer on the substrate includes a polymer of a chain polymerizable monomer, which has a charge transporting structure and a chain polymerizable functional group and has equivalent amount of C=O bonds by molar ratio relative to the chain polymerizable functional group, and a thiol compound, which has a thiol group and equivalent amount of C=O bonds by molar ratio relative to the thiol group. The outermost layer has a sulfur element content of 5 mass% or more and 10 mass% or less as measured by glow discharge-optical emission spectroscopy, and has value A of 0.05 or less represented by a formula (1) (A=S1/S2), the value A obtained by Fourier transform infrared spectroscopy total reflection method under conditions that an internal reflection element is Ge and an incidence angle is 45 degrees. In the formula (1), S1 represents a peak area of a peak (2500 cmor more and 2600 cmor less) on the basis of a SH bond, and S2 represents a peak area of a peak (1640 cmor more and 1750 cmor less) on the basis of a C=O bond.
    • 要解决的问题:提供抑制残留电位累积的电子照相感光体。 解决方案:电子照相感光体如下具有基底和最外层。 基板上的最外层包含具有电荷输送结构和链可聚合官能团的可聚合单体的聚合物,并且相对于链可聚合官能团的摩尔比具有等量的C = O键,硫醇 化合物,其相对于硫醇基的摩尔比具有硫醇基和当量的C = O键。 通过辉光放电 - 光发射光谱测定,最外层的硫元素含量为5质量%以上且10质量%以下,并且由式(1)表示的值A为0.05以下(A = S1 / S2),在内反射元件为Ge且入射角为45度的条件下通过傅里叶变换红外光谱全反射法获得的值A。 在公式(1)中,S1表示峰值的峰面积(2500cm -1 或更高和2600cm -1 以下),S2表示峰的峰面积(1640cm×16cm以上和1750cm×SP POS =“POST”), > -1 或更小)。 版权所有(C)2013,JPO&INPIT
    • 5. 发明专利
    • Image forming apparatus and process cartridge
    • 图像形成装置和处理盒
    • JP2013044822A
    • 2013-03-04
    • JP2011181017
    • 2011-08-22
    • Fuji Xerox Co Ltd富士ゼロックス株式会社
    • KORENAGA JIRONUKADA KATSUMIYAMADA WATARUIWADATE YUKOSASAKI TOMOYAKAJIWARA KENJI
    • G03G5/07G03G5/047G03G5/06G03G5/147G03G9/08
    • PROBLEM TO BE SOLVED: To provide an image forming apparatus in which deterioration in gradation property is suppressed over a long period of time and an image having high resolution can be obtained.SOLUTION: An image forming apparatus includes: a photoreceptor which includes a surface layer including a polymer of a compound of general formula (II) or a compound having a similar specified structure and in which relation among a surface layer film thickness d, a surface potential P after electricity removal, and a surface potential Pafter electricity removal when the surface layer film thickness d is 0 satisfies (P-P)/d≤1.20; and a development device which develops with a developer including a toner whose average shape factor SF1 is 100 or more and 130 or less and volume average particle size is 4.0 μm or less. However, in the general formula (II), F represents a charge transporting skeleton, L' represents a linking group of the specified structure, m' represents an integer of 1 or more and 6 or less, and n represents an integer of 2 or more and 3 or less.
    • 解决的问题:提供一种能够长时间抑制灰度特性劣化并且可以获得高分辨率的图像的图像形成装置。 解决方案:图像形成装置包括:感光体,其包括包含通式(II)的化合物的聚合物的表面层或具有相似的特定结构的化合物,其表面层膜厚度d, 表面层膜厚度d为0时,除电后的表面电位P和表面电位P 0 满足(PP 0 )/ d 2 ≤1.20; 以及显影装置,其显影剂包括平均形状因子SF1为100以上且130以下,体积平均粒径为4.0μm以下的调色剂。 然而,在通式(II)中,F表示电荷输送性骨架,L'表示规定结构的连接基,m'表示1以上6以下的整数,n表示2以上的整数, 多于3个或更少。 版权所有(C)2013,JPO&INPIT
    • 6. 发明专利
    • Image forming apparatus and process cartridge
    • 图像形成装置和处理盒
    • JP2013044821A
    • 2013-03-04
    • JP2011181016
    • 2011-08-22
    • Fuji Xerox Co Ltd富士ゼロックス株式会社
    • KORENAGA JIRONUKADA KATSUMIYAMADA WATARUIWADATE YUKOSASAKI TOMOYAKAJIWARA KENJI
    • G03G5/07G03G5/047G03G5/06G03G5/147G03G9/08
    • PROBLEM TO BE SOLVED: To provide an image forming apparatus capable of obtaining an image in which occurrence of a black spotty image defect is suppressed over a long period of time.SOLUTION: An image forming apparatus includes: a photoreceptor which includes a surface layer including a polymer of a compound of general formula (II) or a compound having a similar structure and having the film thickness of 5 μm or more and 20 μm or less and in which relation among a surface layer film thickness d, a surface potential P after electricity removal, and a surface potential Pafter electricity removal when the surface layer film thickness d is 0 satisfies (P-P)/d≤1.20; and a development device which develops with a toner whose SF1 is 140 or more and 170 or less. However, in the general formula (II), F represents a charge transporting skeleton, L' represents a linking group of a specified structure, m' represents an integer of 1 or more and 6 or less, and n represents an integer of 2 or more and 3 or less.
    • 解决的问题:提供能够获得长时间抑制黑斑图像缺陷的发生的图像的图像形成装置。 解决方案:图像形成装置包括:感光体,其包括包含通式(II)的化合物的聚合物的表面层或具有类似结构并具有5μm以上且20μm以上的膜厚的化合物 以下,除去表面层膜厚度d,除电后的表面电位P和剥离后的表面电位P 0 之间的关系, 为0满足(PP 0 )/ d 2 ≤1.20; 以及利用SF1为140以上且170以下的调色剂显影的显影装置。 然而,在通式(II)中,F表示电荷输送性骨架,L'表示规定结构的连接基,m'表示1以上6以下的整数,n表示2以上的整数, 多于3个或更少。 版权所有(C)2013,JPO&INPIT
    • 8. 发明专利
    • Electrophotographic photoreceptor, process cartridge, and image forming device
    • 电子照相机,过程盒和图像形成装置
    • JP2010231077A
    • 2010-10-14
    • JP2009080049
    • 2009-03-27
    • Fuji Xerox Co Ltd富士ゼロックス株式会社
    • YAMADA WATARUNUKADA KATSUMIIWASAKI MASAHIROHIRANO AKIRADOI KOJI
    • G03G5/147
    • G03G5/075G03G5/076G03G5/14769G03G5/14786G03G5/14791G03G5/14795G03G2215/00957
    • PROBLEM TO BE SOLVED: To provide an electrophotographic photoreceptor preventing the occurrence of wrinkle and unevenness in the uppermost surface layer, achieving high mechanical strength of the uppermost surface layer, preventing electric characteristic and image characteristic from being deteriorated due to repetitive use for a long time, and forming a stable image. SOLUTION: This electrophotographic photoreceptor includes at least an electrical conductive base substance and a photosensitive layer provided on the electrical conductive base substance. The uppermost surface layer is a layer formed by a hardened product of a composition containing at least one compound shown by formula (I) (wherein, F denotes organic group of n-value having positive hole transport property, R denotes hydrogen atom or alkyl, L denotes a divalent organic group, n denotes an integer of 1 or more, and j denotes 0 or 1) and at least one compound having electric charge transport capability and azo group. COPYRIGHT: (C)2011,JPO&INPIT
    • 要解决的问题:为了提供一种防止最上表面层发生皱纹和不均匀性的电子照相感光体,实现最上表面层的高机械强度,防止电特性和图像特性由于重复使用而劣化 长时间,形成稳定的形象。 解决方案:该电子照相感光体至少包括导电性基体物质和设在导电性基体上的感光层。 最上表面层是由含有至少一种式(I)所示化合物的组合物的硬化产物形成的层(其中,F表示具有空穴传输特性的n值的有机基团,R表示氢原子或烷基, L表示二价有机基团,n表示1以上的整数,j表示0或1)和至少一种具有电荷输送能力的化合物和偶氮基团。 版权所有(C)2011,JPO&INPIT
    • 10. 发明专利
    • Electrophotographic photoreceptor, process cartridge, and image forming device
    • 电子照相机,过程盒和图像形成装置
    • JP2009251181A
    • 2009-10-29
    • JP2008097372
    • 2008-04-03
    • Fuji Xerox Co Ltd富士ゼロックス株式会社
    • IWASAKI MASAHIRONUKADA KATSUMIYAMADA WATARU
    • G03G5/147
    • PROBLEM TO BE SOLVED: To provide an electrophotographic photoreceptor provided with the outermost surface layer excellent in flaw resistance, adhesiveness to an under layer and environmental stability, and capable of forming an image of high quality over a long period; and to provide a process cartridge and an image forming device using the same. SOLUTION: This electrophotographic photoreceptor includes a conductive support body, and a photosensitive layer provided on the conductive support body, and the photosensitive layer has, in the most distant side from the conductive support body, the outermost surface layer comprising a crosslinked film formed of a resin composition containing an aromatic hydrocarbon formaldehyde resin obtained by reacting an aromatic hydrocarbon expressed by general formula (1) with formaldehyde, a thermosetting resin and a charge transport component, where R 11 represents a 1C-6C alkyl group, a1 represents 0-3 of integer, and R 11 may be the same or different when a1 is 2 or 3, in general formula (1). COPYRIGHT: (C)2010,JPO&INPIT
    • 要解决的问题:提供一种电子照相感光体,其具有耐缺损性,下层粘合性和环境稳定性优异的最外表面层,能够长期形成高质量的图像; 并提供一种处理盒和使用该处理盒的图像形成装置。 解决方案:该电子照相感光体包括导电支撑体和设置在导电支撑体上的感光层,感光层在与导电支撑体最远的一侧具有包含交联膜的最外表面层 由含有由通式(1)表示的芳族烃与甲醛,热固性树脂和电荷输送组分反应得到的芳族烃甲醛树脂的树脂组合物形成,其中R 11是表示1〜 6C烷基,a1表示0-3的整数,当通式(1)中,当a1为2或3时,R“SP”11可以相同或不同。 版权所有(C)2010,JPO&INPIT