| 摘要 |
PROBLEM TO BE SOLVED: To provide a photoreceptor that prevents the occurrence of a minute sunspot or fog under a high-temperature high-humidity environment, prevents sensitivity reduction under a low-temperature low-humidity environment, has high stability against environmental fluctuation, and is applicable to a high-resolution machine; and to provide an image forming apparatus including the same. SOLUTION: The electrophotographic photoreceptor includes an undercoat layer between an electroconductive support and a photosensitive layer, and the undercoat layer contains at least metal oxide microparticles coated with anhydrous silicon dioxide and a binder resin. The photosensitive layer is a monolayered photosensitive layer containing at least a charge generation material and a charge transport material or a multilayered photosensitive layer formed of a charge generation layer containing a charge generation material and a charge transport layer containing a charge transport material that are stacked in this order or in an inverse order. The charge generation material contains a crystal type oxotitanylphthalocyanine and an X-type metal-free phthalocyanine. COPYRIGHT: (C)2011,JPO&INPIT
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