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    • 6. 发明专利
    • Electrophotographic photoreceptor, electrophotographic apparatus and process cartridge for electrophotographic apparatus
    • 电子显微照相机,电子显微照相设备和电子显示设备的工艺盒
    • JP2007086351A
    • 2007-04-05
    • JP2005274422
    • 2005-09-21
    • Ricoh Co Ltd株式会社リコー
    • TANIGUCHI KIYOSHIKIYOHARA TAKAHITO
    • G03G5/05G03G5/06G03G5/14
    • G03G5/0696G03G5/0567G03G5/0679
    • PROBLEM TO BE SOLVED: To provide an electrophotographic photoreceptor having high sensitivity and excellent potential stability, capable of setting potential particularly after exposure to a low value, ensuring a wide sensitivity selection range, and having high durability and high reliability, and an electrophotographic apparatus and a process cartridge equipped with the electrophotographic photoreceptor.
      SOLUTION: The electrophotographic photoreceptor used in a digital electrophotographic apparatus in which image exposure is performed with a single-wavelength light source has a photosensitive layer comprising a charge generating layer, a charge transport layer and an intermediate layer, contains a phthalocyanine pigment and an asymmetric azo pigment represented by formula (I) in the charge generating layer, and contains a polyalkylene glycol, polyalkylene glycol ether, a polyalkylene glycol ester or a crown ether in one layer in the photosensitive layer.
      COPYRIGHT: (C)2007,JPO&INPIT
    • 要解决的问题:提供一种具有高灵敏度和优异的电位稳定性的电子照相感光体,其能够特别在暴露于低值之后设定电位,确保宽的灵敏度选择范围,并且具有高耐久性和高可靠性,并且 电子照相设备和配备有电子照相感光体的处理盒。 解决方案:在用单波长光源进行图像曝光的数字电子照相设备中使用的电子照相感光体具有包含电荷产生层,电荷传输层和中间层的感光层,其含有酞菁颜料 和在电荷产生层中由式(I)表示的不对称偶氮颜料,并且在感光层中的一层中含有聚亚烷基二醇,聚亚烷基二醇醚,聚亚烷基二醇酯或冠醚。 版权所有(C)2007,JPO&INPIT
    • 7. 发明专利
    • Image forming apparatus and process cartridge for image forming apparatus
    • 图像形成装置和图像形成装置的处理盒
    • JP2005249901A
    • 2005-09-15
    • JP2004057070
    • 2004-03-02
    • Ricoh Co Ltd株式会社リコー
    • TAMOTO NOZOMISUZUKI TETSUOSUZUKI YASUOTOKUMASU TAKAHIKOWATANABE KAZUHIKONAKAI HIROSHIOSHIMA KOICHICHIKUSHIYUTSU NOBORUMATSUURA NEKKA
    • G03G5/07G03G15/00G03G15/02G03G21/00G03G21/18
    • G03G15/751G03G5/0546G03G5/0614G03G5/0679G03G5/14734G03G5/14791G03G21/0058
    • PROBLEM TO BE SOLVED: To provide an image forming apparatus in which chemical deterioration on the photoreceptor surface is suppressed, a side effect of picture quality deterioration can be suppressed even for repeated use of the photoreceptor, excellent wear resistance and picture quality stability are obtained, and an image with high picture quality can be stably outputted for a long time. SOLUTION: The image forming apparatus is equipped with at least: a traveling body to be charged; a charger to charge the body to be charged by using discharge generated by applying voltage on a charging member disposed in contact with or in the proximity of the body to be charged; a latent image forming device to form an electrostatic latent image on the surface of the body charged by the charger; and a developing device to deposit toner in an image part of the electrostatic latent image formed by the latent image forming device. The surface of the body to be charged has ≥40% elastic displacement rate τe defined by τe(%)=[(maximum displacement)-(plastic displacement)]/(maximum displacement)×100. The apparatus is equipped with a protective substance supply means to apply a protective substance on at least a discharging region on the surface of the body to be charged. COPYRIGHT: (C)2005,JPO&NCIPI
    • 要解决的问题:为了提供抑制感光体表面的化学劣化的图像形成装置,即使重复使用感光体也能够抑制图像质量劣化的副作用,优异的耐磨性和图像质量稳定性 并且能够长时间稳定地输出具有高画质的图像。 解决方案:图像形成装置至少装有:要充电的行进体; 充电器,通过使用与被充电体接触或接近的充电部件上施加电压而产生的放电来对被充电体充电; 潜像形成装置,用于在由充电器充电的身体的表面上形成静电潜像; 以及在由潜像形成装置形成的静电潜像的图像部分中沉积调色剂的显影装置。 被充电体的表面由τe(%)= [(最大位移) - (塑性位移)] /(最大位移)×100定义的≥40%的弹性位移率τe。 该装置配备有保护物质供给装置,用于在要充电的身体的表面上的至少一个排放区域上施加保护物质。 版权所有(C)2005,JPO&NCIPI
    • 8. 发明专利
    • Printing plate material for electrophotographic process
    • 印刷电路板印刷材料
    • JPS61140945A
    • 1986-06-28
    • JP26227284
    • 1984-12-12
    • Ricoh Co Ltd
    • TSUTSUI KYOJIHASHIMOTO MITSURUOOTA MASABUMISASAKI MASAOMI
    • G03G13/26C09B35/021G03G5/047G03G5/06
    • G03G5/047C09B35/021G03G5/0679G03G5/0681G03G5/0683G03G5/0685
    • PURPOSE:To enhance photosensitivity and printing resistance by forming an electrophotographic sensitive layer composed of 2 layers of an electrostatic charge generating layer contg. a specified azo pigment and a charge transfer layer on a conductive substrate. CONSTITUTION:The electrophotographic sensitive layer composed of 2 layers of the charge generating layer contg. the azo pigment represented by the formula, A being a coupler residue, and a charge transfer layer contg. a charge transfer material and the alkali-soluble resin is formed on the conductive substrate 1. As the fundamental structure, the charge generating layer 3 and the charge transfer layer 4 are laminated on the conductive substrate 1 to form the electrophotographic sensitive layer 2. As the coupler of the azo pigment, compds. having a phenolic hydroxyl group, such as phenols and naphthols, and aromatic amino compds. are used, thus permitting high sensitivity and high printing resistance to be obtained.
    • 目的:通过形成由2层静电电荷产生层组成的电摄影感光层来提高光敏性和耐印刷性。 指定的偶氮颜料和导电基底上的电荷转移层。 构成:由2层电荷产生层组成的电子照相敏感层 由式表示的偶氮颜料A是成色剂残基,电荷转移层。 在导电基板1上形成电荷转移材料和碱溶性树脂。作为基本结构,电荷产生层3和电荷转移层4层叠在导电基板1上以形成电子照相感光层2.作为 偶氮颜料的成色剂 具有酚羟基,如酚类和萘酚,以及芳族氨基酸。 ,因此可以获得高灵敏度和高耐印刷性。
    • 9. 发明专利
    • Laminate type electrophotographic sensitive body
    • 层压型电子感应敏感体
    • JPS61117556A
    • 1986-06-04
    • JP23827884
    • 1984-11-14
    • Canon Inc
    • ISHIKAWA SHOZOFUJIMURA NAOTO
    • G03G5/00G03G5/043G03G5/047G03G5/06G03G5/14
    • G03G5/0618G03G5/0679G03G5/0687
    • PURPOSE:To obtain a positively chargeable photosensitive body superior in durability by successively laminating an electrostatic charge transfer layer for carrying positive holes, and a charge generating layer contg. a photoconductive azo pigment, and a specified charge transfer material on a conductive substrate. CONSTITUTION:The charge generating layer 3 laminated on the charge transfer layer 4 formed on the conductive substrate 5 in succession contains an azo type photoconductive pigment 1 represented by formula I in which A is a divalent org. group having a conjugated double bond between C atoms connected with an azo group or N(C6H6)3; B is a coupler having phenolic OH; and l is 2 or 3. The layer 3 also contains the di- or tri-arylmethane type charge transfer material 2 represented by formula II in which R1-R4 are each alkyl or (R1, R2) and (R3, R4) each forms an N-contg. hetero ring; R5, R6 are each alkyl or alkenyl or each may be cyclized with each other to form a 3-10C hydrocarbon ring; and R7-R10 are each H, halogen, alkyl, or the like. Such a charge generating layer 3 can secure sufficient carrier transfer performance in the layer even when the binder is increased, and surface strength, sensitivity, and light memory can be enhanced.
    • 目的:通过连续地层叠用于承载空穴的静电电荷转移层和电荷产生层,获得耐久性优异的带正电荷的感光体。 光导性偶氮颜料,以及导电性基体上的规定的电荷转移材料。 构成:依次形成在导电性基板5上的电荷转移层4上层叠的电荷产生层3含有A为二价组分的式I表示的偶氮系光导性颜料1。 在与偶氮基相连的C原子或N(C 6 H 6)3之间具有共轭双键的基团; B是具有酚OH的成色剂; 层3还含有由式II表示的二 - 或三芳基甲烷型电荷转移材料2,其中R 1 -R 4各自为烷基或(R 1,R 2)和(R 3,R 4)各自形成 一个N-contg 杂环 R5,R6各自为烷基或烯基,或各自可以相互环化形成3-10C烃环; 和R 7 -R 10各自为H,卤素,烷基等。 即使当粘合剂增加时,这种电荷产生层3也可以确保层中的足够的载流子转移性能,并且可以提高表面强度,灵敏度和光记忆。
    • 10. 发明专利
    • Electrophotographic sensitive body
    • 电子感应敏感体
    • JPS6184654A
    • 1986-04-30
    • JP20763184
    • 1984-10-02
    • Mitsubishi Paper Mills Ltd
    • ENOMOTO KAZUHIROHAINO KOZOITO AKIRA
    • C09B35/021C09B35/039G03G5/043G03G5/06H01L51/42
    • G03G5/0679G03G5/0681
    • PURPOSE:To enhance sensitivity, to reduce residual potential, to prevent these characteristics from change due to repeated uses, and to enhance durability by incorporating a specified azo compd. in a photosensitive layer. CONSTITUTION:The photosensitive layer formed on a conductive substrate contains an azo compd. represented by the formula in which A is a divalent residue having C combining both N forming azo group, and Z is an atomic group necessary for forming an aromatic hydrocarbon ring or hetero ring or unsatd. monocyclic hydrocarbon ring. Such an azo compd. is used for the photoconductor constituting the photosensitive layer of the photosensitive body, or, especially, only as the excellent carrier generating material of a so-called functionally separated type photosensitive body using two separate materials of this azo compd. for generating carriers and another material for transferring them, thus permitting the physical film properties to be improved, electrostatic charge retentivity and sensitivity to be enhanced, residual potential and fatigue deterioration of the photosensitive body due to repeated uses to be reduced, and moreover, these characteristics to be not changed against heat and light and excellent stability to be obtained.
    • 目的:提高灵敏度,减少残留潜力,防止这些特征由于重复使用而发生变化,并通过加入指定的偶氮化合物来提高耐久性。 在感光层中。 构成:形成在导电性基材上的感光层含有偶氮化合物。 由下式表示,其中A是具有组合N形成偶氮基的C的二价残基,Z是形成芳族烃环或杂环或不饱和所必需的原子团。 单环烃环。 这样的偶氮化合物 用于构成感光体的感光层的感光体,特别是仅使用这种偶氮化合物的两种分开的材料作为所谓的功能分离型感光体的优异的载体产生材料。 用于产生载体和用于转移它们的另一种材料,从而允许改善物理膜性能,由于重复使用而导致的静电电荷保持性和敏感性增强,感光体的残留电位和疲劳劣化,此外,这些 不会发生热和光变化的特性以及获得良好的稳定性。