A process cartridge includes an image bearing member, a developing device developing
an electrostatic image on the member using developer to form a developer image
on the member and a developer charger charging residual developer on the member
disposed downstream of a transferring position at which the developer image is
transferred onto a transfer destination member and upstream of a position at which
the electrostatic image is formed on the member with respect to the moving direction
of the member. The developer charger is in contact with the member and is movable
in the longitudinal direction of the member upon charging the residual developer.
L1+dL2 when L1 is the developing width of the developing
device, L2 is the contact width of the developer charger with the member,
and d is the width of movement of the developer charger in the longitudinal direction
of the member.