| 摘要 |
An image forming apparatus includes movable image bearing member, a first charger means for charging the image bearing member, first electrostatic latent image forming device for forming a first electrostatic latent image in accordance with image information on the image bearing means charged by the first charger, first developing device for developing the first electrostatic latent image, a second charger for re-charging the image bearing member, second electrostatic latent image forming device for forming a second electrostatic latent image in accordance with image information on the image bearing member recharged by the second charger, second developing device for developing the second electrostatic latent image, a dector for detecting a surface potential of the image bearing member, the detector detecting at least the surface potential at that portion of the latent image formed on the image bearing member by the first latent image forming device which is developed, after the portion is charged by the second charger, and a controller for controlling the second charger to provide a target potential of the portion and for controlling a developing bias voltage of the second developing device in accordance with the potential of the portion.
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