Image forming apparatus

An image forming apparatus, comprising:

• an apparatus main body;
• an image bearing member that bears a developer image;
• a first cartridge that has a charging member that charges the image bearing member, and that is detachably attachable to the apparatus main body;
• a second cartridge that is detachably attachable to the apparatus main body, the second cartridge including a developer accommodation portion for accommodating a developer to be supplied to the first cartridge;
• an exposure unit that has a light-emitting portion capable of emitting light, and that is capable of switching between an emitting state in which light is emitted from the light-emitting portion to the image bearing member and a non-emitting state in which light is not emitted from the light-emitting portion to the image bearing member, the exposure unit entering the non-emitting state in a state in which the second cartridge is detached from the apparatus main body;
• a current detecting portion that detects a charge current flowing in the charging member;
• a potential changing portion that changes a potential of a surface of the image bearing member;
• and
• notification means for notifying that the first cartridge has not been attached to the apparatus main body in a case in which the charge current flowing in the charging member of the first cartridge and detected by the current detecting portion is lower than a first value, and notifies that the second cartridge has not been attached to the apparatus main body in a case in which the charge current flowing in the charging member of the first cartridge and detected by the current detecting portion is at least the first value and is lower than a second value.