| 摘要 |
PROBLEM TO BE SOLVED: To provide an electrophotographic photoreceptor capable of preventing deterioration of images due to repeated use, and to provide an apparatus for forming an electrophotographic image. SOLUTION: The electrophotographic photoreceptor includes an underlayer, charge-generating layer and charge transport layer that are formed sequentially on a conductive substrate. The underlayer includes a metal oxide, binder resin and heat stabilizer. The charge-generating layer includes the binder resin and phthalocyanine charge-generating materials. The charge transport layer includes a charge transport material, binder resin and heat stabilizer. Then, the electrophotographic photoreceptor and apparatus for forming the electrophotographic image with the photoreceptor are provided. The photoreceptor contains a specified combination of heat stabilizers in the underlayer and the charge transport layer. By using a combination of butadiene amine compound and hydrazone system compound or benzidine compound as the CTM of the charge transport layer, light resistance and thermal fatigue resistances are enhanced, and deterioration of images due to the repeated use can be restrained. COPYRIGHT: (C)2007,JPO&INPIT
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