Image forming apparatus which corrects charge potential on an image carrier

An image forming apparatus having a photoconductive image carrier;

• a charging unit configured to charge the image carrier;
• an exposing unit configured to expose an image on a surface of the image carrier after the charging to form a latent electrostatic image;
• a developing unit configured to develop the latent electrostatic image by adhering toner to the latent electrostatic image to form a toner image;
• and a transferring unit configured to transfer the obtained toner image to a final supporting member;
• the image forming apparatus comprising:
• a storing unit configured to store positional unevenness information on each of (i) charge potential unevenness, which occurs when the charging at different positions of the surface of the image carrier is performed, and (ii) exposure potential unevenness, which occurs when the exposure at different positions of the surface of the image carrier is performed,
• wherein the exposing unit is configured to correct, for each position, the charge potential unevenness and the exposure potential unevenness by control the emission of light from the exposing unit by use of correction values calculated from the separately stored positional unevenness information.