IMAGE DEVELOPING UNIT AND IMAGE FORMING APPARATUS

摘要

In an image developing unit comprising a toner cartridge and an image developing device, the image developing device includes a toner tank having a toner inlet capable of receiving a toner flowed out from a toner outlet of the toner cartridge and a toner supply route extending away from the toner inlet, conveyor means for transporting away from the toner inlet the toner received by the toner supply route, and an image developing roller, the toner supply route having a plurality of toner supply ports arranged away from the toner inlet and having their respective aperture areas gradually increasing with distance from the toner inlet.