Patent ID: 7983587

Claim:
An image forming apparatus comprising: a first image forming portion including a first photosensitive member, a first charging member configured and positioned to electrically charge the first photosensitive member to form an image on the first photosensitive member, and a first cleaning brush configured and positioned to clean the first charging member; a second image forming portion including a second photosensitive member, a second charging member configured and positioned to electrically charge the second photosensitive member to form an image on the second photosensitive member, and a second cleaning brush which has a longer brush length than a brush length of the first cleaning brush configured and positioned to clean the second charging member; a driven mechanism configured to cause the first cleaning brush to be rotatably driven by the first charging member which is rotatably driven along with rotation of the first photosensitive member; and a drive coupling mechanism configured to drivably couple the second charging member and the second cleaning brush to transmit a driving force from the second charging member which is rotatably driven along with the rotation of the first photosensitive member to the second cleaning brush.