| 摘要 |
PROBLEM TO BE SOLVED: To provide an electrophotographic photoreceptor having high sensitivity and excellent in wear resistance in repetitive use. SOLUTION: In the electrophotographic photoreceptor with a photosensitive layer on an electrically conductive substrate, at least one tetrazaporphyrin derivative mixture containing derivatives of formulae (1) and (2) (where R101 is H, an optionally substituted lower alkyl, optionally substituted alkoxy or optionally substituted aryl; R102-R105 are each H, a halogen, optionally substituted alkyl, optionally substituted aryl, optionally substituted cycloalkyl, nitro or cyano, R102-R105 may form rings by bonding; (n) is 1 or 2; and M is a metal, a metal oxide, a metal hydroxide, a metal halide or a form with two added hydrogen atoms) and at least one high molecular electric charge transferring material are contained in the photosensitive layer.
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