Image forming apparatus with fog suppression feature

An image forming apparatus comprising:

• an image bearing member capable of rotation;
• a charging member that charges a surface of the image bearing member;
• an exposure unit that exposes the surface of the image bearing member charged by the charging member to light;
• a developing member that supplies toner to the image bearing member in a development portion facing the image bearing member and forms a toner image;
• a charging voltage applying unit that applies a charging voltage to the charging member;
• a developing voltage applying unit that applies a developing voltage to the developing member;
• and
• a controller that controls the exposure unit, the charging voltage applying unit, and the developing voltage applying unit,
• wherein, during non-image formation in which the toner image is not formed on the surface of the image bearing member, the exposure unit exposes an image formable region on the surface of the image bearing member charged by the charging member to light, and
• wherein, in a state where toner is able to be supplied from the developing member to the image bearing member, during a period from when the developing voltage starts to be changed from a first developing voltage to a second developing voltage smaller than the first developing voltage until the developing voltage is completed to be changed to the second developing voltage, the controller controls the exposure unit so that, after the surface of the image bearing member exposed to light with a first exposure amount by the exposure unit passes through the development portion, the surface of the image bearing member exposed to light with a second exposure amount smaller than the first exposure amount by the exposure unit passes through the development portion.