Patent ID: 11868667
Assignee: BROTHER KOGYO KABUSHIKI KAISHA
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 4:
5. The image forming apparatus according to claim 4,
wherein the main body memory stores third mode information indicating whether the server is in a first charging mode or in a second charging mode, the first charging mode being a mode in which the server calculates charge for a prescribed time period based on a first charge per unit number of sheets set by the contract and a number of printed sheets, and the second charging mode being a mode in which the server calculates the charge for the prescribed time period based on a second charge per unit number of sheets set by the contract and the number of printed sheets, the second charge being set to be lower than the first charge,
wherein the controller is configured to execute:
determining whether the amount of remaining coloring agent is in a state in which the cartridge should be replaced in a case where the first instruction is received in a state in which the third mode information indicates the first charging mode; and
rewriting the third mode information into information indicating the second charging mode in a case where it is determined that the amount of remaining coloring agent reached a state in which the cartridge should be replaced.