| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an image forming apparatus that controls power consumption, while maintaining image quality without the image defects due to negative afterimage, and that can attain energy savings. <P>SOLUTION: A transfer voltage controller of a transfer device begins to apply the transfer voltage to a first transfer roller 11, prior to the arrival of a latent image region front end Is at the entrance of a transfer nip, wherein the latent image region front end Is is the front end of a latent image forming region Ai on the surface of a photoreceptor, where a latent image is formed on the latent image forming section. Furthermore, the transfer voltage controller controls transfer power supply, to stop applying the transfer voltage to the first transfer roller after a latent image region rear end Ie passes through the exit of the transfer nip, wherein the latent image region rear end Ie is the rear end of the latent image forming region Ai, and a discharge device begins a discharge operation, while the transfer power supply applies the transfer voltage to the first transfer roller 11 before a voltage application exit V1 arrives at the discharge nip, where the voltage application exit V1 is the front end of a transfer voltage applying region Av on the surface of a photoreceptor that has passed through the transfer nip. Furthermore, the discharge device stops discharge operation, after a voltage shut-down exit Ve passes through the discharge nip, where the voltage shut-down exit Ve is the rear end of the a transfer voltage applying region Av. <P>COPYRIGHT: (C)2008,JPO&INPIT |
