| 摘要 |
PURPOSE:To obtain the photosensitive body which has the excellent whole electrostatic characteristics, especially, the excellent sensitivity, and is improved the spectral sensitivity at a long wavelength region by forming the photosensitive layer contg. a specified azo pigment on an electroconductive supporting body. CONSTITUTION:The photosensitive layer contg. the polyazo pigment shown by formula Cp-N=N-A-N=N-Ar1-N=N-Cp is formed on the electroconductive supporting body. In the formula, A is an aromatic heterocyclic ring group having carbonyl group (except at fluorene ring) which may be substd., Ar1 is aryl group which may be substd., Cp is a coupler residual group having a phenolic hydroxyl group. Thus, the photosensitive body which has the excellent whole electrophotographic characteristics, especially the excellent sensitivity and repeatedly stability is obtd., and the sensitivity of the sensitive body at the long wavelength region is improved. |
