| 摘要 |
PROBLEM TO BE SOLVED: To provide an image forming apparatus achieving improvement in an image density by improving dot reproducibility and reducing fog at the same time. SOLUTION: An alternating voltage is applied to a development sleeve 9 so that a first period during which a first peak-to-peak voltage Vpp(1) is applied and a second period during which a second peak-to-peak voltage Vpp(2) that is lower than the first peak-to-peak voltage is applied are repeated alternately. The alternating voltage to be applied is applied so that a development-side potential to move a toner from the development sleeve 9 to a photoreceptor 51 and an opposite development-side potential to move a toner from the photoreceptor 51 to the development sleeve 9 alternate with each other. The potential to be finally applied in the first period is preferably the development-side potential. COPYRIGHT: (C)2010,JPO&INPIT |
