Patent ID: 7551865
Filing Date: 2009-06-23
Classification: G03G

Abstract:
1. An image forming apparatus comprising: an image carrying member for carrying a toner image; an intermediary transfer member for primary-transferring the toner image at a primary transfer position so that a second color toner image is primary-transferred from said image carrying member onto a first color toner image which has been transferred, in an image area at a primary transfer position, from said image carrying member onto said intermediary transfer member in the image area at the primary transfer position in a superposition manner; a secondary transfer member for secondary-transferring the first and second color toner images together from said intermediary transfer member onto a recording material at a secondary transfer position; a fixing means for fixing the toner images on the recording material; a guide member for guiding the recording material from the secondary transfer position to said fixing means; an electrical discharging member, provided between the secondary transfer position and said guide member in a movement direction of the recording material, for electrically discharging the recording material onto which the toner images are secondary-transferred; and a voltage application means for applying, to said electrical discharging member before the secondary transfer, a voltage of a polarity identical to that of the first color toner image on said intermediary transfer member in a predetermined period during a period from a time at which a front end of the image area of said intermediary transfer member carrying the first color toner image passes through the secondary transfer position to a time at which a rear end of the image area reaches the first transfer position.