Patent ID: 7127191
Filing Date: 2006-10-24
Classification: G03G

Abstract:
1. A cleaning device for collecting toner on a surface of an image bearing body, comprising: a rotary member having electrical conductivity and being rotatively driven while being in contact with the surface of the image bearing body; a conductive member which makes contact with the image bearing body on an upstream side of the rotary member in a conveyance direction of the image bearing body; and a single d.c. power supply to which one of the rotary member and the conductive member is connected, the other being grounded, and which generates a d.c. current that flows via the image bearing body between the rotary member and the conductive member, whereby a first electric field in such a direction as to exert a force for adsorbing the toner of a normal charging polarity to the rotary member is generated between the rotary member and the image bearing body while a second electric field in a direction reverse to the first electric field is generated between the conductive member and the image bearing body.