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    • 11. 发明申请
    • IMAGE FORMING APPARATUS
    • 图像形成装置
    • US20090180807A1
    • 2009-07-16
    • US12295320
    • 2007-03-30
    • Teruyuki MitsumoriKozo IshioHiroaki TakamuraMasaya OotaShiho SanoTakeshi OowadaMasakazu SugiharaTeruki SenokutiShiro YasutomiYumi Hirabaru
    • Teruyuki MitsumoriKozo IshioHiroaki TakamuraMasaya OotaShiho SanoTakeshi OowadaMasakazu SugiharaTeruki SenokutiShiro YasutomiYumi Hirabaru
    • G03G15/04G03G15/08
    • G03G13/08G03G9/0819G03G15/08
    • To provide an image forming apparatus which is able to improve image quality while suppressing soiling of image white parts, scattering in the apparatus, streaks, fading, etc. due to non-uniformity in the particle size distribution of a toner or mismatching between a toner and a photoreceptor, and which has good cleaning properties, and even when a high speed printing machine is used, is able to reduce a problem of soiling, etc. in long-term use and provide excellent image stability.An image forming apparatus comprising an electrophotographic photoreceptor having a photosensitive layer on an electroconductive substrate, and a toner for developing an electrostatic charge image, wherein the photosensitive layer of the electrophotographic photoreceptor contains a phthalocyanine obtained via an acid paste step; the toner for developing an electrostatic charge image is a toner for developing an electrostatic charge image containing toner matrix particles formed in an aqueous medium; the toner has a volume median diameter (Dv50) of from 4.0 μm to 7.0 μm; and the relationship between the volume median diameter (Dv50) and the percentage in number (Dns) of toner particles having a particle diameter of from 2.00 μm to 3.56 μm satisfies the following formula (1): Dns≦0.233 EXP(17.3/Dv50)  (1)
    • 为了提供能够提高图像质量的图像形成装置,同时抑制图像白色部分的污染,由于调色剂的粒度分布不均匀而导致的装置散射,条纹,褪色等,或者调色剂的不匹配 和感光体,并且具有良好的清洁性能,并且即使使用高速印刷机,能够在长期使用中减少污渍等问题,并且提供优异的图像稳定性。 一种图像形成装置,包括在导电性基体上具有感光层的电子照相感光体和静电荷图像显影用调色剂,其中,电子照相感光体的感光层含有通过酸性糊剂步骤得到的酞菁; 用于显影静电荷图像的调色剂是用于显影含有在水性介质中形成的调色剂基质颗粒的静电荷图像的调色剂; 调色剂具有4.0μm至7.0μm的体积中值直径(Dv50); 体积中值粒径(Dv50)与粒径为2.00μm〜3.56μm的调色剂粒子的数量(Dns)的关系满足下式(1):&lt; “In-line formula”end =“lead”?> Dns <= 0.233 EXP(17.3 / Dv50)(1)<?in-line-formula description =“In-line Formulas”end =“tail”?>
    • 12. 发明授权
    • Image forming apparatus
    • 图像形成装置
    • US08064796B2
    • 2011-11-22
    • US12295320
    • 2007-03-30
    • Teruyuki MitsumoriKozo IshioHiroaki TakamuraMasaya OtaShiho SanoTakeshi OowadaMasakazu SugiharaTeruki SenokutiShiro YasutomiYumi Hirabaru
    • Teruyuki MitsumoriKozo IshioHiroaki TakamuraMasaya OtaShiho SanoTakeshi OowadaMasakazu SugiharaTeruki SenokutiShiro YasutomiYumi Hirabaru
    • G03G15/06G03G9/08
    • G03G13/08G03G9/0819G03G15/08
    • To provide an image forming apparatus which is able to improve image quality while suppressing soiling of image white parts, scattering in the apparatus, streaks, fading, etc. due to non-uniformity in the particle size distribution of a toner or mismatching between a toner and a photoreceptor, and which has good cleaning properties, and even when a high speed printing machine is used, is able to reduce a problem of soiling, etc. in long-term use and provide excellent image stability.An image forming apparatus comprising an electrophotographic photoreceptor having a photosensitive layer on an electroconductive substrate, and a toner for developing an electrostatic charge image, wherein the photosensitive layer of the electrophotographic photoreceptor contains a phthalocyanine obtained via an acid paste step; the toner for developing an electrostatic charge image is a toner for developing an electrostatic charge image containing toner matrix particles formed in an aqueous medium; the toner has a volume median diameter (Dv50) of from 4.0 μm to 7.0 μm; and the relationship between the volume median diameter (Dv50) and the percentage in number (Dns) of toner particles having a particle diameter of from 2.00 μm to 3.56 μm satisfies the following formula (1): Dns≦0.233 EXP(17.3/Dv50)  (1).
    • 为了提供能够提高图像质量的图像形成装置,同时抑制图像白色部分的污染,由于调色剂的粒度分布不均匀而导致的装置散射,条纹,褪色等,或者调色剂的不匹配 和感光体,并且具有良好的清洁性能,并且即使使用高速印刷机,能够在长期使用中减少污渍等问题,并且提供优异的图像稳定性。 一种图像形成装置,包括在导电性基体上具有感光层的电子照相感光体和静电荷图像显影用调色剂,其中,电子照相感光体的感光层含有通过酸性糊剂步骤得到的酞菁; 用于显影静电荷图像的调色剂是用于显影含有在水性介质中形成的调色剂基质颗粒的静电荷图像的调色剂; 调色剂的体积中值粒径(Dv50)为4.0μm〜7.0μm; 体积中值粒径(Dv50)与粒径为2.00μm〜3.56μm的调色剂粒子的数量(Dns)的关系满足下式(1):Dns&nlE; 0.233 EXP(17.3 / Dv50) (1)。
    • 19. 发明授权
    • Electrophotographic photosensitive body, image-forming device using same and cartridge
    • 电子照相感光体,成像装置使用及墨盒
    • US08663882B2
    • 2014-03-04
    • US12088322
    • 2006-09-28
    • Teruyuki MitsumoriMasayuki HiroiHiroaki Takamura
    • Teruyuki MitsumoriMasayuki HiroiHiroaki Takamura
    • G03G15/02G03G15/00
    • G03G5/0696G03G5/0564G03G5/0614G03G5/0657G03G5/102G03G5/142G03G5/144
    • To provide an electrophotographic photoreceptor excellent in electric characteristics and various characteristics, capable of forming a uniform photosensitive layer and excellent in repetitive characteristics, an image forming apparatus using it and an electrophotgraphic cartridge.A lamination type electrophotographic photoreceptor comprising an electroconductive substrate and a photosensitive layer formed thereon, characterized in that the photosensitive layer contains a compound represented by the following formula (1), the ratio of the weight of the compound represented by the formula (1) to the weight content of all binder resins contained in the photosensitive layer is from 0.15 to 0.6, and the weight of the compound represented by the formula (1) is maximum among all charge transport materials: wherein each of Ar1, Ar2 and Ar3 is an aryl group which may have a substituent, each of Ar4 and Ar5 which are independent of each other, is an arylene group which may have a substituent, and each of n1 and n2 which are independent of each other, is an integer of from 1 to 3.
    • 为了提供能够形成均匀的感光层和优异的重复特性的电特性和各种特性的电子照相感光体,使用它的图像形成装置和电子影像盒。 一种层叠型电子照相感光体,其特征在于,含有导电性基体和形成在其上的感光层,其特征在于,感光层含有下述式(1)表示的化合物,式(1)表示的化合物的重量与式 包含在感光层中的所有粘合剂树脂的重量含量为0.15至0.6,并且所有电荷输送材料中由式(1)表示的化合物的重量是最大的:其中Ar1,Ar2和Ar3各自为芳基 可具有取代基的基团,Ar 4和Ar 5各自独立地为可以具有取代基的亚芳基,并且彼此独立的n1和n2各自为1〜3的整数 。
    • 20. 发明申请
    • ELECTROPHOTOGRAPHIC PHOTOSENSITIVE BODY, IMAGE-FORMING DEVICE USING SAME AND CARTRIDGE
    • 电子感光体,使用相同和成像的图像形成装置
    • US20100150608A1
    • 2010-06-17
    • US12088322
    • 2006-09-28
    • Teruyuki MitsumoriMasayuki HiroiHiroaki Takamura
    • Teruyuki MitsumoriMasayuki HiroiHiroaki Takamura
    • G03G15/00G03G5/047
    • G03G5/0696G03G5/0564G03G5/0614G03G5/0657G03G5/102G03G5/142G03G5/144
    • To provide an electrophotographic photoreceptor excellent in electric characteristics and various characteristics, capable of forming a uniform photosensitive layer and excellent in repetitive characteristics, an image forming apparatus using it and an electrophotgraphic cartridge.A lamination type electrophotographic photoreceptor comprising an electroconductive substrate and a photosensitive layer formed thereon, characterized in that the photosensitive layer contains a compound represented by the following formula (1), the ratio of the weight of the compound represented by the formula (1) to the weight content of all binder resins contained in the photosensitive layer is from 0.15 to 0.6, and the weight of the compound represented by the formula (1) is maximum among all charge transport materials: wherein each of Ar1, Ar2 and Ar3 is an aryl group which may have a substituent, each of Ar4 and Ar5 which are independent of each other, is an arylene group which may have a substituent, and each of n1 and n2 which are independent of each other, is an integer of from 1 to 3.
    • 为了提供能够形成均匀的感光层和优异的重复特性的电特性和各种特性的电子照相感光体,使用它的图像形成装置和电子影像盒。 一种层叠型电子照相感光体,其特征在于,含有导电性基体和形成在其上的感光层,其特征在于,感光层含有下述式(1)表示的化合物,式(1)表示的化合物的重量与式 包含在感光层中的所有粘合剂树脂的重量含量为0.15至0.6,并且所有电荷输送材料中由式(1)表示的化合物的重量是最大的:其中Ar1,Ar2和Ar3各自为芳基 可具有取代基的基团,Ar 4和Ar 5各自独立地为可以具有取代基的亚芳基,并且彼此独立的n1和n2各自为1〜3的整数 。