The disclosure relates to an image forming appratus. A control unit (101) of an image forming apparatus (100) controls a developer supply amount per unit time in a coating agent removal sequence basedon information about a driven amount of an image-bearing member unit (210) acquired from a first memory (m1) of the image-bearing member unit via a communication unit, and information about a drivenamount of a developing unit (200) acquired from a second memory (m2) of the developing unit via the communication unit.