Image forming apparatus configured to perform initialization process to initialize lifetime information in consumable memory of consumable when receiving instruction

An initialization method of initializing a consumable memory included in a consumable,

• the initialization method comprising:
• a reception step, by an image forming apparatus, receiving an instruction to initialize lifetime information stored in the consumable memory of the consumable attached to a main casing of the image forming apparatus, the lifetime information being information relating to a service life of the consumable;
• an initialization step, by the image forming apparatus, initializing the lifetime information stored in the consumable memory in accordance with the received instruction;
• and
• a write step, by the image forming apparatus, writing initialization information into the consumable memory, the initialization information indicating that the lifetime information was initialized by execution of the initialization step.

An image forming apparatus comprising:

• a main casing to which a cartridge is attached;
• a sensor that measures a service life of a consumable filled in the cartridge;
• and
• a controller,
• wherein the cartridge includes a consumable memory in which lifetime information is stored, the lifetime information being information stored when the consumable is used and indicating the service life of the consumable, and
• wherein the controller is configured to perform:
• a permission process to permit initialization of the lifetime information by the image forming apparatus when the service life indicated by the lifetime information stored in the consumable memory is different from the service life measured by the sensor.

A control method for an image forming apparatus to which a cartridge filled with a consumable is attached, the cartridge including a consumable memory in which lifetime information is stored, the lifetime information being information stored when the consumable is used and indicating a service life of the consumable,

• the control method comprising:
• a permission step, by the image forming apparatus, permitting initialization of the lifetime information by the image forming apparatus when the service life indicated by the lifetime information is different from the service life measured by a sensor that measures the service life of the consumable;
• a selection screen display step, by the image forming apparatus, causing a display to display thereon an initialization selection screen when the initialization of the lifetime information is permitted, the initialization selection screen being a screen to select whether to perform the initialization of the lifetime information or not;
• and
• an initialization step, by the image forming apparatus, initializing the lifetime information when receiving an input operation indicating the initialization is to be performed through an operation part after the selection screen display step.