Patent ID: 8369735

Claim:
An image forming apparatus comprising: a main body casing; an image forming unit disposed in the main body casing and including a plurality of image carriers arranged in tandem and each configured such that an electrostatic latent image is formed thereon, and a plurality of toner cartridges corresponding to the image carriers and each having a first storage portion for storing toner; a transfer unit including an intermediate transfer belt arranged opposite to the plurality of image carriers and to which toner carried on the plurality of image carriers is transferred, a secondary transfer roller configured to transfer toner from the intermediate transfer belt onto a recording medium, a first roller positioned opposite to the secondary transfer roller, and a second roller configured to be spaced apart from the first roller to loop the intermediate transfer belt around the first roller and the second roller; and a toner collecting unit including a cleaning member positioned in contact with the intermediate transfer belt and configured to collect waste toner remaining on the intermediate transfer belt, and a backup roller positioned opposite to the cleaning member, wherein a first toner cartridge among the plurality of toner cartridges has a second storage portion for storing waste toner collected by the toner collecting unit, and the remaining second toner cartridges other than the first toner cartridge do not have a second storage portion, and wherein the toner collecting unit is positioned closer to the first toner cartridge than the second toner cartridges, and the toner collecting unit is positioned closer to the first roller than the second roller.