Image forming apparatus

An image forming apparatus comprising:

• a photosensitive drum configured to be rotatable;
• a first charging member configured to oppose the photosensitive drum to form a first charging portion, and to charge a surface of the photosensitive drum at the first charging portion in response to application of a first charging voltage thereto;
• a developing roller configured to oppose the photosensitive drum to form a developing portion, and to supply a developer to the photosensitive drum at the developing portion;
• a second charging member configured to oppose the photosensitive drum, in a position downstream of the first charging portion and upstream of the developing portion in a rotational direction of the photosensitive drum, to form a second charging portion, and to charge a surface of the photosensitive drum by discharge at the second charging portion in response to application of a second charging voltage of at least a discharge start threshold thereto;
• and
• a control unit configured to control application of the first charging voltage to the first charging member and application of the second charging voltage to the second charging member, so that only a DC voltage is applied as the first charging voltage and the second charging voltage,
• wherein
• the control unit is configured to perform control such that the second charging voltage, which is equal to or greater than a threshold for start of discharge from the second charging member, is applied to the second charging member during rotation of the photosensitive drum and after application of the first charging voltage to the first charging member.