Image forming apparatus

An image forming apparatus comprising:

• an image bearing member configured to be rotatable;
• a charging member configured to form a charging portion while being in contact with the image bearing member and to electrically charge a surface of the image bearing member at the charging portion;
• an exposure unit configured to expose, with a first exposure amount, a non-image forming portion, in which a toner image is not formed, in an image formable area of the surface of the image bearing member electrically charged by the charging member, and expose, with a second exposure amount, an image forming portion, in which the toner image is formed, in the image formable area, the first exposure amount being smaller than the second exposure amount;
• a developing member configured to form a developing portion while being in contact with the image bearing member and to develop the toner image by supplying toner to the image forming portion at the developing portion;
• a charging voltage application unit configured to apply a charging voltage to the charging member;
• a current detection unit configured to detect a current value of a current flowing from the image bearing member to the charging member in a state in which the charging voltage is applied at a predetermined value to the charging member;
• and
• a control unit configured to control the exposure unit,
• wherein, in a case where the current value detected by the current detection unit is a second current value larger than a first current value, the control unit controls the exposure unit to expose the surface of the image bearing member with the first exposure amount during image formation smaller than that in a case where the detected current value is the first current value.