Electrostatic image forming apparatus having electrode for suppressing electric discharge

摘要

An image forming apparatus includes an image bearing member; an image forming portion for forming a toner image on the image bearing member; an intermediary transfer belt for carrying the toner image transferred from the image bearing member; a transfer belt for carrying and conveying a recording material; an attraction portion for electrostatically attracting the recording material to the transfer belt; a transfer portion for transferring the toner image from the intermediary transfer belt onto the recording material attracted to the transfer belt; and an electrode member, disposed downstream of the attraction portion and upstream of the transfer portion with respect to a movement direction of the transfer belt, being contacted to an inner surface of the transfer belt.

主权项

1. An image forming apparatus comprising:
an image bearing member; an image forming unit configured to form a toner image on said image bearing member; an intermediary transfer belt configured to carry the toner image transferred from said image bearing member; a recording material transfer belt configured to carry and convey a recording material; an attraction portion configured to electrostatically attract the recording material to said recording material transfer belt, wherein at a position of said attraction portion, said recording material transfer belt and said intermediary transfer belt oppose each other in a mutually spaced state; a transfer portion configured to transfer the toner image from said intermediary transfer belt onto the recording material attracted by said attraction portion to said recording material transfer belt, and configured to be disposed downstream of a contact start position, with respect to a movement direction of said recording material transfer belt, where contact between said recording material transfer belt and said intermediary transfer belt starts; and a potential regulating plate configured to suppress an increase in potential of said recording material transfer belt and configured to be surface-contacted to an inner surface of said recording material transfer belt downstream of said attraction portion and upstream of the contact start position with respect to the movement direction of said recording material transfer belt.