| 摘要 |
PROBLEM TO BE SOLVED: To provide a single layer type electrophotographic photoreceptor or the like which does not give rise to a memory image. SOLUTION: The single layer type electrophotographic photoreceptor or the like used by being electrostatically charged to a positive polarity in the image forming apparatus not having a destaticizing process, is constituted by forming a photosensitive layer on a conductive substrate and incorporating a phthalocyanine compound, a hole transfer agent, an electron transfer agent and a binder resin into the photosensitive layer. The content of the hole transfer agent is 5 to 500 wt% of the weight of the binder resin. Also, the content of the phthalocyanine compound is 0.1 to 4 wt% of the weight of the binder resin and the film thickness of the photosensitive layer is 10 to 35μm. In addition, the electrostatic charge potential is set at 800 V and the absolute value difference in the sensitivity between the positive polarity and negative polarity measured after lapse of≤500 msec under conditions of an exposure wavelength 780 nm and exposure energy 1.0μJ/cm<SP>2</SP>and the absolute value of the positive polarity sensitivity is made smaller than the absolute value of the negative polarity sensitivity. COPYRIGHT: (C)2006,JPO&NCIPI
|
