Image forming device having an electrically dielectric regulating member conductive transfer member and a disposed at a transfer station thereof

An image forming apparatus comprising:

• an image bearing member;
• image forming means for forming a toner image on said image bearing member;
• movable transfer sheet bearing means for bearing a transfer sheet;
• an electrically conductive transfer member for transferring a toner image formed on said image bearing member onto a transfer sheet carried by said transfer sheet bearing means through a transfer electric field generated at a transfer station, said transfer member being engageable with said transfer sheet bearing means at a side opposite said image bearing member at said transducer station;
• and
• a regulating member for regulating the transfer electric field, said regulating member having a dielectric member disposed adjacent said transfer member and upstream of the transfer station in a moving direction of said transfer sheet bearing means.