| 摘要 |
PROBLEM TO BE SOLVED: To provide a non-contact type image forming method by which surface staining can be more surely avoided. SOLUTION: In order to avoid the flying of toner between the latent image part of a photoreceptor drum and a developing roller, potential difference between the peak value of AC voltage whose polarity is identical to the side of the electrifying polarity of toner and the surface potential of the latent image part is maintained to be smaller than the minimum flying potential difference Emin. Besides, potential difference between the peak value of the AC voltage and the non-latent image part of the photoreceptor drum is maintained to be equal to or over the difference Emin. Then, the frequency (f) of AC voltage is set to be under 10 (kHz). |
