An image forming apparatus includes an image forming part for forming a
toner image on an image bearing body based on an image signal, and a
density detection part for detecting a density of the toner image on the
image bearing body, such that it is determined whether a normal image
formed by the image forming part has a density detection area which
should be detected, and if it is determined that the density detection
area is present, image forming conditions are controlled based on a
detection result of the density detection area.