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    • 3. 发明专利
    • Electrophotographic photoreceptor, image forming apparatus and process cartridge
    • 电子照相机,图像形成装置和工艺盒
    • JP2012155282A
    • 2012-08-16
    • JP2011016704
    • 2011-01-28
    • Fuji Xerox Co Ltd富士ゼロックス株式会社
    • NUKADA KATSUMISONOBE KENYAYAMADA WATARUDOI KOJIMIYAMOTO TAKESHIIWADATE YUKO
    • G03G5/06G03G5/05G03G5/147G03G21/00G03G21/18
    • PROBLEM TO BE SOLVED: To obtain excellent electric characteristics.SOLUTION: An electrophotographic photoreceptor is provided, including a conductive substrate and a photosensitive layer on the conductive substrate, the layer containing a polymer prepared by polymerizing at least one kind of thiol group-containing charge transporting material expressed by general formula (I):F-[(G)-(X)-Y-SH]and at least one kind of compound having an unsaturated bond. In formula (I), F represents an organic group derived from a charge transporting compound; G represents a divalent organic group having 1 to 5 carbon atoms; X represents a group selected from -CO-O-, -O-CO- and -O-; Y represents a divalent organic group having 1 to 5 carbon atoms which may have -SH as a substituent; a1 and a2 each independently represent 0 or 1; and b represents an integer of 1 to 6.
    • 要解决的问题:获得优异的电特性。 解决方案:提供一种电子照相感光体,其包括在导电基底上的导电基底和感光层,该层包含通过聚合由通式(I)表示的至少一种含硫醇基的电荷输送材料制备的聚合物 ):F - [(G) a1 - (X) a2 -Y-SH] b 和至少一种具有不饱和键的化合物。 在式(I)中,F表示衍生自电荷输送化合物的有机基团; G表示碳原子数为1〜5的二价有机基团。 X表示选自-CO-O-,-O-CO-和-O-的基团; Y表示可以具有-SH作为取代基的碳原子数为1〜5的二价有机基团; a1和a2各自独立地表示0或1; b表示1〜6的整数。(C)2012,JPO&INPIT
    • 6. 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
    • 7. 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
    • 8. 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
    • 10. 发明专利
    • Electrophotographic photoreceptor, process cartridge, and image forming apparatus
    • 电子照相机,过程盒和图像形成装置
    • JP2014174179A
    • 2014-09-22
    • JP2013043511
    • 2013-03-05
    • Fuji Xerox Co Ltd富士ゼロックス株式会社
    • NUKADA KATSUMIYAMADA WATARUHIROSE EIICHIIWADATE YUKOKAJIWARA KENJI
    • G03G5/05G03G5/147
    • G03G7/004G03G5/14726G03G5/1473G03G5/14791
    • PROBLEM TO BE SOLVED: To provide an electrophotographic photoreceptor that has an outermost surface layer having excellent electric characteristics and wear resistance.SOLUTION: An electrophotographic photoreceptor includes a conductive substrate, and a photosensitive layer provided on the conductive substrate; and an outermost surface layer is a layer constituted of a hardened material of a composition that is represented by the following general formula (I), and contains a mixture of at least one position isomer of non-charge transport compounds and at least one of non-reactive charge transfer materials. In the general formula (I), Fhas no charge transportability, and represents an m-valent organic group having an aromatic ring; Lrepresents a divalent linking group including at least one selected from -C(=O)-O- and -O-; and mrepresents an integer of 3 or more.
    • 要解决的问题:提供具有优异的电特性和耐磨性的最外表面层的电子照相感光体。解决方案:电子照相感光体包括导电基底和设置在导电基底上的感光层; 最外表面层是由以下通式(I)表示的组合物的硬化材料构成的层,并且含有至少一种非电荷输送化合物的位置异构体和至少一种非电荷输送化合物的混合物, - 反应电荷转移材料。 在通式(I)中,不具有电荷可转移性,并且表示具有芳环的m价有机基团; L代表包括选自-C(= O)-O-和-O-的至少一个的二价连接基团; 并且m表示3以上的整数。