摘要 |
PURPOSE:To obtain practicable excellent sensitivity and durability by incorporating a specified azo pigment in a photosensitive layer. CONSTITUTION:The diazo pigment to be incorporated is represented by formula 1, and embodied by formula 1-1, and as a substituent R, alkyl, aralkyl, aryl, or acyl group is introduced to the N atom of diarylamine forming the skeleton of the diazo pigment of formula 1, thus permitting the polarity of the pigment to be changed, one of carrier generating efficiency and carrier transfer efficiency or both of them to be improved, accordingly, sensitivity of the photosensitive body to be enhanced, and potential stability at the time of uses for a long period to be ensured. |