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    • 6. 发明申请
    • ELECTROPHOTOGRAPHIC PHOTORECEPTOR, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS
    • 电子照相机,过程盒和图像形成装置
    • US20100330473A1
    • 2010-12-30
    • US12627723
    • 2009-11-30
    • Daisuke HARUYAMAMasahiro IWASAKI
    • Daisuke HARUYAMAMasahiro IWASAKI
    • G03G15/00G03G21/18
    • G03G5/0592G03G5/0614G03G5/0696G03G5/144G03G5/1476G03G5/14769G03G5/14791G03G5/14795
    • The invention provides an electrophotographic photoreceptor having a surface protection layer that satisfies the following requirements: (1) including a crosslinked substance of at least one selected from a guanamine compound or a melamine compound, and at least one charge transporting material having at least one substituent selected from —OH, —OCH3, —NH2, —SH or —COOH; (2) including the at least one of a guanamine compound or a melamine compound in an amount of from about 0.1 to about 5% by weight; and (3) having a universal hardness of from about 180 to about 220 N/mm2 and a creep ratio of from about 5% to about 8%, the universal hardness and the creep ratio being obtained by performing a hardness test by pushing a Vickers quadrangular pyramid diamond indenter against the surface protection layer at a maximum load of 20 mN, in an environment of 25° C. and a relative humidity of 50%.
    • 本发明提供具有满足以下要求的表面保护层的电子照相感光体:(1)包含选自胍胺化合物或三聚氰胺化合物中的至少一种的交联物质和至少一种具有至少一个取代基的电荷输送材料 选自-OH,-OCH 3,-NH 2,-SH或-COOH; (2)包括约0.1至约5重量%的胍胺化合物或三聚氰胺化合物中的至少一种; 和(3)具有约180至约220N / mm 2的通用硬度和约5%至约8%的蠕变率,通用硬度和蠕变比通过通过将维氏硬度 在25°C的环境和相对湿度为50%的环境中以最大负载20mN的方式抵抗表面保护层的四角锥形金刚石压头。