Patent ID: 6016418
Filing Date: 2000-01-18
Classification: G03G

Abstract:
An image forming apparatus comprising:an image bearing member for electrostatically bearing a toner image;a dielectric member movable along an endless path through a transfer position of said image bearing member, wherein said dielectric member cooperates with said image bearing member to form an image transfer nip at said transfer position;an electroconductive member in contact with said dielectric member at a side remote from said image bearing member, wherein said electroconductive member is supplied with a transfer potential having a polarity opposite from that of a charge polarity of the toner image when the toner image is transferred at the image transfer nip;wherein said electroconductive member is supplied with a potential having a polarity the same as that of said transfer potential and having a lower level than said transfer potential or with a ground potential while a surface of said dielectric member carries a charge with a polarity which is the same as the polarity of the toner, so as to generate an electric field for transferring the toner from said dielectric member to said image bearing member at the transfer position.