Patent ID: 6463240
Filing Date: 2002-10-08
Classification: G03G

Abstract:
A potential controller of an image forming apparatus having an image bearing body, a charging part that charges the surface of the image bearing body, an exposing part that exposes the surface of the image bearing body to form an electrostatic latent image, and a developing part that applies a developing bias voltage to a developer bearing body to develop the latent image,the potential controller, at the time of rising of a charged potential of the image bearing body and a developing bias voltage, controlling at least one of the charged potential of the image bearing body and the developing bias voltage to reach an objective value through plural stages with the rising of the other occurring through the stages, so that a potential difference between a potential of a non-charged portion of the image bearing body and the developing bias voltage does not exceed a first predetermined value, and a potential difference between a potential of a charged portion of the image bearing body and the developing bias voltage does not exceed a second predetermined value.