Image forming apparatus and process cartridge detachably attachable thereto

摘要

The present invention provides an image forming apparatus comprising a shiftable image bearing member, and an electrifying device adapted to electrify the image bearing member and having magnetic particles contacted with the image bearing member and a magnetic particle carrying device for magnetically holding and carrying the magnetic particles, and wherein a peak position of magnetic flux density of the magnetic particle carrying device near the image bearing member is located at a downstream side of a most approaching position between the magnetic particle carrying device and the image bearing member in a shifting direction of the image bearing member.