Patent ID: 11899388
Assignee: BROTHER KOGYO KABUSHIKI KAISHA
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 4:
5. The image forming apparatus according to claim 1, wherein the controller is configured to execute:
a first installation check process of determining whether the development cartridge is installed in the main body;
an empty check process of determining whether the cumulative supplied toner amount is equal to or greater than a second threshold value for determining whether the toner cartridge is empty; and
a process of permitting an image forming process to be executed, when the controller determines that the development cartridge is installed in the main body in the first installation check process and determines that the cumulative supplied toner amount is equal to or greater than the second threshold value in the empty check process, until the difference found by subtracting the cumulative toner consumption amount from the cumulative received toner amount becomes equal to or smaller than a third threshold value.