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    • 4. 发明授权
    • Electrophotographic image-forming method, electrophotographic image-forming apparatus, and process cartridge
    • 电子照相成像方法,电照相成像装置和处理盒
    • US06215971B1
    • 2001-04-10
    • US09536848
    • 2000-03-28
    • Harumi SakohHaruyuki TsujiShinji Takagi
    • Harumi SakohHaruyuki TsujiShinji Takagi
    • G03G1500
    • G03G15/751G03G5/04G03G5/147G03G5/14704G03G2215/021G03G2221/0005
    • An electrophotographic image-forming method has a contact charging step of charging the surface of an electrophotographic photosensitive member; an electrostatic latent image forming step of forming an electrostatic latent image on the surface of the electrophotographic photosensitive member charged; a developing step of developing the electrostatic latent image formed into a toner image; and a transfer step of transferring the toner image formed by the development from the electrophotographic photosensitive member to a transfer material, the developing step serving also as a cleaning step for collecting a toner remaining on the electrophotographic photosensitive member after transfer. The toner contains an external additive and the electrophotographic photosensitive member has surface properties of universal hardness of 200 N/mm2 or above (provided that a curve that represents the relationship between hardness and depth of indentation by an indenter has no point of inflection) and a coefficient of surface friction of from 0.01 to 1.2.
    • 电子照相图像形成方法具有对电子照相感光构件的表面进行充电的接触充电步骤; 静电潜像形成步骤,在被充电的电照相感光构件的表面上形成静电潜像; 将形成为调色剂图像的静电潜像显影的显影步骤; 以及将通过显影形成的调色剂图像从电子照相感光构件转印到转印材料的转印步骤,显影步骤还用作在转印后收集在电子照相感光构件上残留的调色剂的清洁步骤。 调色剂含有外部添加剂,并且电子照相感光构件具有200N / mm 2以上的通用硬度的表面特性(条件是表示硬度与压头的压痕深度之间的关系没有拐点的曲线)和 表面摩擦系数为0.01〜1.2。
    • 6. 发明授权
    • Process for producing electrophotographic photosensitive member
    • 电子照相感光构件的制造方法
    • US09046797B2
    • 2015-06-02
    • US13983994
    • 2012-03-01
    • Atsushi FujiiHideaki MatsuokaHaruyuki TsujiNobuhiro NakamuraKazuhisa Shida
    • Atsushi FujiiHideaki MatsuokaHaruyuki TsujiNobuhiro NakamuraKazuhisa Shida
    • G03G5/00G03G7/00G03G5/10G03G5/14G03G5/05
    • G03G7/0053G03G5/0507G03G5/0525G03G5/10G03G5/104G03G5/142G03G5/144
    • To provide a process for producing an electrophotographic photosensitive member that can not easily cause any fog due to an increase in dark attenuation, a conductive layer is formed with use of a coating liquid for conductive layer prepared with use of a solvent, a binder material and metal oxide particles. The metal oxide particles (P) and binder material (B) in the coating liquid for conductive layer are in a mass ratio (P/B) of from 1.5/1.0 to 3.5/1.0. The metal oxide particle is a titanium oxide particle coated with tin oxide doped with phosphorus or tungsten. Where powder resistivity of the metal oxide particle is represented by x (Ω·cm) and powder resistivity of the titanium oxide particle as a core particle constituting the metal oxide particle is represented by y (Ω·cm), the y and the x satisfy the following relations (i) and (ii): 5.0×107≦y≦5.0×109  (i) 1.0×102≦y/x≦1.0×106  (ii).
    • 为了提供一种用于制造由于暗衰减增加而不容易引起灰雾的电子照相感光构件的制造方法,使用通过使用溶剂,粘合剂材料和粘合剂材料制备的导电层用涂布液形成导电层, 金属氧化物颗粒。 用于导电层的涂布液中的金属氧化物颗粒(P)和粘合剂材料(B)的质量比(P / B)为1.5 / 1.0至3.5 / 1.0。 金属氧化物颗粒是涂覆有掺杂有磷或钨的氧化锡的氧化钛颗粒。 当金属氧化物颗粒的粉末电阻率由x(&OHgr·cm)表示,作为构成金属氧化物颗粒的核心颗粒的氧化钛颗粒的粉末电阻率由y(Ω cm)表示时,y和 x满足以下关系式(i)和(ii):5.0×107≦̸ y≦̸ 5.0×109(i)1.0×102≦̸ y / x≦̸ 1.0×106(ii)。
    • 7. 发明授权
    • Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus
    • 电子照相感光构件,处理盒和电子照相设备
    • US08778580B2
    • 2014-07-15
    • US13384149
    • 2010-09-03
    • Haruyuki TsujiAtsushi FujiiHideaki Matsuoka
    • Haruyuki TsujiAtsushi FujiiHideaki Matsuoka
    • G03G5/04
    • 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|ρ2|−log|ρ1|)≦2.00  (1), and 1.0×108≦ρ1≦2.0×1013  (2), where, in the expressions (1) and (2), ρ1 is volume resistivity (Ω·cm) of the conductive layer as measured before the test and ρ2 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述数学式(1)和(2),如 测试前后的值:-2.00≦̸(log |&rgr; 2 | -log |&rgr; 1 |)≦̸ 2.00(1)和1.0×108≦̸&rgr; 1≦̸ 2.0×1013(2) 在表达式(1)和(2)中,&rgr; 1是测试前测量的导电层的体积电阻率(&OHgr;·cm),2是导电层的体积电阻率(&OHgr·cm) 在测试后测量。
    • 10. 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
    • US20120121291A1
    • 2012-05-17
    • US13384149
    • 2010-09-03
    • Haruyuki TsujiAtsushi FujiiHideaki Matsuoka
    • Haruyuki TsujiAtsushi FujiiHideaki Matsuoka
    • G03G21/18G03G15/00
    • 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|ρ2|−log|ρ1|)≦2.00  (1), and 1.0×108≦ρ1≦2.0×1013  (2), where, in the expressions (1) and (2), ρ1 is volume resistivity (Ω·cm) of the conductive layer as measured before the test and ρ2 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述数学式(1)和(2),如 测试前后的值:-2.00≦̸(log |&rgr; 2 | -log |&rgr; 1 |)≦̸ 2.00(1)和1.0×108≦̸&rgr; 1≦̸ 2.0×1013(2) 在表达式(1)和(2)中,&rgr; 1是测试前测量的导电层的体积电阻率(&OHgr;·cm),2是导电层的体积电阻率(&OHgr·cm) 在测试后测量。