Patent ID: 8041244
Filing Date: 2011-10-18
Classification: G03G

Abstract:
1. An image forming apparatus which forms an image on a recording material by using electrophotographic photosensitive members, the image forming apparatus comprising: a rotatable belt member; a first image forming unit including a first photosensitive member and a first toner image forming device configured to form a toner image on the first photosensitive member; a first transfer member configured to transfer the toner image formed on the first photosensitive member onto the belt member; a second image forming unit including a second photosensitive member and a second toner image forming device configured to form a toner image on the second photosensitive member, the second image forming unit being arranged on a downstream side of the first image forming unit in a rotational direction of the belt member so as to be adjacent to the first image forming unit; a second transfer member configured to transfer the toner image formed on the second photosensitive member onto the belt member; a first photodischarging device configured to discharge a potential of the first photosensitive member by irradiating the first photosensitive member with light; a second photodischarging device configured to discharge a potential of the second photosensitive member by irradiating the second photosensitive member with light; and a setting unit configured to set a voltage to be applied to the second transfer member, when an image is formed, based on a current value detected by applying the voltage to the second transfer member when no image is formed, wherein the first photodischarging device is turned off when the current value is detected by applying the voltage to the second transfer member.