Image forming apparatus

An image forming apparatus comprising:

• an image bearing member configured to bear a developer image;
• a developing unit provided with a developer carrying member configured to rotate while carrying a developer and to form the developer image on the image bearing member by supplying the developer to the image bearing member;
• a moving unit configured to move the developer carrying member to a first position where the developer carrying member and the image bearing member are in contact with each other and to a second position which is further away from the image bearing member than the first position;
• a driving portion configured to be capable of rotating the developer carrying member in either case where the developer carrying member is located in the first position or the second position;
• an acquiring portion configured to acquire information including first information on a rotation amount of the developer carrying member in a state in which the developer carrying member is located in the first position and second information on the rotation amount of the developer carrying member in a state in which the developer carrying member is located in the second position;
• and
• a controller configured to control the driving portion and the acquiring portion,
• wherein the controller controls
• (i) so that both a remaining life of the developing unit is reduced based on the first information and the remaining life of the developing unit is reduced based on the second information, and
• (ii) so as to change a degree of decrease of the remaining life of the developing unit based on the first information and the degree of decrease of the remaining life of the developing unit based on the second information.