| 摘要 |
<p>PROBLEM TO BE SOLVED: To ensure high sensitivity, high image quality, high stability and high resolution by forming an electric charge generating layer containing a crystalline titanyl phthalocyanine composition exhibiting a specified X-ray diffraction spectrum as an electric charge generating material and an electric charge transferring layer containing at least one specified bisamine compound as an electric charge transferring material. SOLUTION: The electrophotographic photoreceptor has an electric charge generating layer containing a crystalline titanyl phthalocyanine composition exhibiting a specified X-ray diffraction spectrum as an electric charge generating material and an electric charge transferring layer containing at least one bisamine compound of the formula as an electric charge transferring material. In the formula, Ar1 and Ar2 are each aryl, a heterocyclic group, aralkyl or alkyl, Z is O, S or Se, R1 and R2 are each 1-3C alkyl, alkoxy, dialkylamino, halogen or H, (m) is an integer of 1-4 and (n) is an integer of 1-3.</p> |
