Patent ID: 6556801
Filing Date: 2003-04-29
Classification: G03G

Abstract:
An image developing unit comprising a toner cartridge and an image developing device,wherein said toner cartridge stores a toner and has a toner outlet through which the toner flows out, wherein said image developing device includes a toner tank having a toner inlet capable of receiving the toner flowed out from the toner outlet of said toner cartridge and a toner supply route extending away from the toner inlet and capable of receiving the toner flowed into through the toner inlet, wherein a conveyor is provided in said toner tank for transporting away from said toner inlet the toner received by said toner supply route, and an image developing roller is set in said toner tank, wherein said toner supply route has a plurality of toner supply ports arranged away from said toner inlet so that the toner in said toner supply route flows out through the toner supply ports into said toner tank, and respective aperture areas of said plurality of toner supply ports gradually increase with distance from said toner inlet, and wherein said plurality of toner supply ports individually have edge portions capable of stemming the toner in said toner supply ports, and respective heights of said edge portions of the plurality of toner supply ports gradually decrease with distance from said toner inlet.