DEVELOPER SUPPLYING DEVICE AND IMAGE FORMING APPARATUS HAVING THE DEVICE.

摘要

A request signal having a command designating a coded rule is output from the controller (81) of a PPC to the CPU (45f) of a toner cartridge. The controller receives from the cartridge CPU (45f) a signal responding to the request signal to collate the response signal and judgment data stored in a ROM (82). Thus, depending on whether or not the response signal corresponds to the coded rule designated, the compatibility of the toner cartridge is judged.