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    • 4. 发明申请
    • ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER, PROCESS CARTRIDGE, AND ELECTROPHOTOGRAPHIC APPARATUS
    • 电子照相感光元件,工艺盒和电子照相设备
    • WO2011027912A1
    • 2011-03-10
    • PCT/JP2010/065572
    • 2010-09-03
    • CANON KABUSHIKI KAISHATSUJI, HaruyukiFUJII, AtsushiMATSUOKA, Hideaki
    • TSUJI, HaruyukiFUJII, AtsushiMATSUOKA, Hideaki
    • G03G5/14
    • G03G5/144G03G5/102G03G5/142
    • An electrophotographic photosensitive member having a specific conductive layer and promising less variation in light-area potential and residual potential in reproducing images repeatedly, and a process cartridge and an electrophotographic apparatus which have such an electrophotographic photosensitive member are provided. Where a test in which a voltage of -1.0 kV having only a DC voltage component is continuously applied to the conductive layer for 1 hour is conducted, the conductive layer has volume resistivity satisfying the following mathematical expressions (1) and (2), as values before and after the test: -2.00 ≤ (log | ρ 2 | - log | ρ 1 |) ≤ 2.00 (1), and 1.0×10 8 ≤ ρ 1 ≤ 2.0×10 13 (2), where, in the expressions (1) and (2), ρ 1 is volume resistivity (Ω. cm) of the conductive layer as measured before the test and ρ 2 is volume resistivity (Ω. cm) of the conductive layer as measured after the test.
    • 提供具有特定导电层的电子照相感光构件,并且重复地再现图像中的光区电位和剩余电位的变化较小,以及具有这种电子照相感光构件的处理盒和电子照相设备。 在进行1小时的连续施加直流电压成分的-1.0kV的电压的试验中,导电层的体积电阻率满足下列数学式(1)和(2),如 测试前后的值:-2.00 =(log |≤2| - log |≤1|)= 2.00(1),1.0×108 =α1= 2.0×1013(2) 1)和(2)中,α1是测试前测量的导电层的体积电阻率(O.cm),λ2是测试后测量的导电层的体积电阻率(O.cm)。
    • 5. 发明申请
    • METHOD FOR PRODUCING ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER
    • 生产电子光敏成员的方法
    • WO2014002915A1
    • 2014-01-03
    • PCT/JP2013/067150
    • 2013-06-17
    • CANON KABUSHIKI KAISHA
    • FUJII, AtsushiMATSUOKA, HideakiTSUJI, HaruyukiNAKAMURA, NobuhiroSHIDA, Kazuhisa
    • G03G5/14G03G5/00
    • G03G5/08G03G5/0525G03G5/104G03G5/144
    • A method for producing an electrophotographic photosensitive member in which leakage hardly occurs is provided. For this, in the method for producing an electrophotographic photosensitive member according to the present invention, a coating liquid for a conductive layer is prepared using a solvent, a binder material, and a metallic oxide particle having a water content of not less than 1.0% by mass and not more than 2.0% by mass; using the coating liquid for a conductive layer, a conductive layer having a volume resistivity of not less than 1.0 x 10 8 Ω•cm and not more than 5.0 x 10 12 Ω•cm is formed; the mass ratio (P/B) of the metallic oxide particle (P) to the binder material (B) in the coating liquid for a conductive layer is not less than 1.5/1.0 and not more than 3.5/1.0; and the metallic oxide particle is selected from the group consisting of a titanium oxide particle coated with tin oxide doped with phosphorus, a titanium oxide particle coated with tin oxide doped with tungsten, and a titanium oxide particle coated with tin oxide doped with fluorine.
    • 提供了几乎不发生泄漏的电子照相感光构件的制造方法。 为此,在本发明的电子照相感光体的制造方法中,使用溶剂,粘合剂材料和含水率为1.0%以上的金属氧化物粒子制备导电层用涂布液, 以质量%计不超过2.0质量% 使用涂布液作为导电层,形成体积电阻率不小于1.0×10 8Ω·cm且不大于5.0×10 12Ω·cm的导电层; 导电层用涂布液中的金属氧化物粒子(P)与粘合剂材料(B)的质量比(P / B)为1.5 / 1.0以上且3.5 / 1.0以下; 金属氧化物粒子选自由掺杂有磷的氧化锡涂覆的氧化钛粒子,涂覆有掺杂钨的氧化锡的二氧化钛粒子,以及掺杂有氟的氧化锡涂覆的氧化钛粒子。