Charging device, image forming apparatus with same and a process unit detachable mountable to the image forming apparatus

摘要

A charging apparatus includes a charging member (2) contactable to an image bearing member, the charging member including a base member (2a) and an elastic coating layer (2b) which is on the base member (2a) and contactable to an image bearing member (1) which is the member to be charged; a pressing device (4) for pressing the coating layer (2a) to the image bearing member (1); wherein the coating layer (2a) has a thickness which is larger away from the pressing device (4) when the coating layer (2a) is not press-contacted to the image bearing member (1).