Patent ID: 8139978

Claim:
An image forming apparatus for forming an image on a sheet, comprising: a casing; a plurality of image carriers parallelly arranged along a first direction, each image carrier being formed with an electrostatic latent image and configured to rotate about an axis extending along a second direction perpendicular to the first direction; a plurality of developing agent carriers opposed to the image carriers, each developing agent carrier visualizing the electrostatic latent image by feeding a developing agent to the image carriers; an intermediate transfer belt arranged above the plurality of image carriers, and configured to come into contact with all the plurality of image carriers; a secondary transfer roller opposed to the intermediate transfer belt; a cleaning unit arranged above the intermediate transfer belt and configured to clean toners adhering to a surface of the intermediate transfer belt; an ejection tray disposed above the casing; a scanner unit arranged in a lower portion of the plurality of image carriers and configured to form the electrostatic latent image on the image carriers; and a plurality of developing agent cartridges parallelly arranged in the first direction to be opposed to the developing agent carriers; wherein each developing agent cartridge, in a third direction parallel to the second direction, is disposed so as to overlap corresponding image carrier, corresponding developing agent carrier, the intermediate transfer belt and the ejection tray, wherein each developing agent cartridge, in the third direction, is disposed so as not to overlap the scanner unit, and wherein the developing agent cartridge which is farthest from the secondary transfer roller, in the third direction, is disposed so as to overlap the cleaning unit.