Image forming apparatus having dielectric constant relationship between image bearing member, intermediate transfer member and contact transfer device

摘要

An image forming apparatus includes a first image-bearing member such as an electrophotographic photosensitive member, an intermediate transfer member for receiving a transferable image formed on the first image-bearing member, and contact transfer device for transferring the transferable image from the intermediate transfer member to a transfer material. The first image-bearing member has a surface layer having a dielectric constant epsilon d, the intermediate transfer member has a surface layer having a dielectric constant epsilon ITD and the contact transfer device has a surface layer having a dielectric constant epsilon tr satisfying a relationship of; epsilon d