| 摘要 |
PROBLEM TO BE SOLVED: To provide a photoreceptor at the end of which a band-like gradation stripe or a fine stripe is not caused in the case of forming an image, and an image forming device using the photoreceptor. SOLUTION: In this photoreceptor provided with at least a photoreceptive layer on a base substance, the fluctuation of the boundary on the base substance side of the photoreceptive layer within the range of 10 to 80 mm from at least either end of the photoreceptor is larger than that of the photoreceptive layer at the center part of the photoreceptor. Especially, the fluctuation is effectively controlled by discretely Fourier-transforming a data group in which the surface roughness of the boundary on the base substance side of the photoreceptive layer is reflected, so that power spectrum is obtained, and using a value I (S) obtained by standardizing the total sum of respective wave number components. |
