The invention is to provide a toner, a toner cartridge and a developing device using the same in that an excellent image without a defect on the image is obtained in a long period of time, and stable agitation and transportation can be conducted. In a toner cartridge containing a toner containing at least a binder resin, a colorant and wax, inside the toner cartridge, and a toner agitating and transporting member for supplying the toner under agitation and transportation, the toner contains the wax in an amount of from 3 to 10% by weight and has a mean particle diameter of from 3 to 10 &mgr;m, and the toner agitating and transporting member is arranged as rotatably inside the toner cartridge to form a distance of from 0.5 to 3.0 mm between the member and an inner wall of a main body of the toner cartridge.