Patent ID: 7391989

Claim:
An electrophotographic image forming apparatus comprising a paper cassette and a print unit which prints an image on a sheet of paper in accordance with an electrophotographic process, and a housing containing the print unit, the print unit comprising: a photosensitive drum; an exposure unit which forms an electrostatic latent image by radiating light corresponding to image information on the photosensitive drum; a developing unit which is installed above the photosensitive drum to develop the electrostatic latent image with toner; a pickup roller installed above the photosensitive drum to pick up the sheet of paper from a paper feed cassette and transfer the sheet of paper toward the photosensitive drum; and a paper transportation path installed along a rear side of the housing and extended below from the pickup roller to transfer the developed image to the sheet of paper, and to guide the sheet of paper to an outlet provided in a front side of the housing, wherein the exposure unit is installed at the front side of the housing and the developing unit is horizontally disposed between the paper transportation path and the exposure unit.