Patent ID: 7286788
Filing Date: 2007-10-23
Classification: G03G

Abstract:
1. A process cartridge detachably mountable to a main assembly of an image forming apparatus, said process cartridge comprising: an image bearing member; charging means for charging said image bearing member; developing means for developing an electrostatic latent image with a developer to form a developer image; first auxiliary charging means, for charging a residual developer remaining on said image bearing member, disposed downstream from a transfer position where the developer image is transferred onto an image receiving member and upstream from said charging means, in a movement direction of a surface of said image bearing member; and second auxiliary charging means, for charging the residual developer, disposed downstream from said first auxiliary charging means and upstream from said charging means in the movement direction of the surface of said image bearing member, wherein said first auxiliary charging means is supplied with an AC voltage and a DC voltage which has a polarity opposite a regular polarity of the developer from the main assembly of the apparatus, and said second auxiliary charging means is supplied with a DC voltage having a polarity which is the same as that of the regular polarity of the developer.