<p>An image forming apparatus includes a main casing; a photosensitive member; a process cartridge that can be installed or removed with respect to the main casing along a removal path; a scanner unit located above the process cartridge when the process cartridge is installed in the main casing; a sheet accommodating portion located at a bottom portion of the main casing; a pick-up roller located above the sheet accommodating portion; and a feed path along which a sheet can be conveyed from the sheet accommodating portion to a discharge port and a sheet stacking portion. At least a part of the feed path is substantially parallel to the removal path and located between the sheet accommodating portion and the process cartridge when the process cartridge is installed in the main casing; the scanner unit includes a frame including a first portion having a first height and a second portion having a second height that is less than the first height, the second portion being located closer to the pick-up roller than the first portion; and an image forming position where an image is transferred from the photosensitive member to the sheet is located along the feed path at a position lower than an upper surface of the pick-up roller in a direction perpendicular to the removal path.</p>
