| 摘要 |
PROBLEM TO BE SOLVED: To provide a positively-charged single-layered electrophotographic photoreceptor capable of suppressing the occurrence of a transfer memory even when applied to a high-speed process, and an image forming apparatus using the same.SOLUTION: A positively-charged single-layered electrophotographic photoreceptor includes a photosensitive layer containing at least a charge generating material, an electron transport material, a hole transport material, and a binder resin in a single layer on a conductive base material. The charge generating material contains a phthalocyanine pigment; the content of the electron transport material to the binder resin is 45 to 100 mass%; and when the photoreceptor is charged at +800 V, then charged at -800 V, and exposed at both voltages under conditions of an exposure wavelength of 780 nm, and exposure energy to make a bright potential at 150 V after the lapse of 300 ms after the exposure, a difference between the absolute values of both bright potentials is 150 V or less. |
