An image forming apparatus for forming an image on a recording medium, the image forming apparatus comprising: an apparatus main body; a cartridge including a supported portion (21, 23); a main body side positioning portion (152, 153, 200) provided on the apparatus main body and for positioning the cartridge in a position capable of image formation by supporting the supported portion; a moving member moveable with respect to the apparatus main body and arranged to thereby move the cartridge, the moving member being moveable between an external position, in which the moving member is positioned at least partially outside the apparatus main body and wherein the cartridge is attachable to and detachable from the image forming apparatus when the moving member is in the external position, and an internal position in which the moving member is positioned at least substantially inside the apparatus main body and wherein the cartridge is arranged to be positioned by the main body side positioning portion (152, 153, 200) when the moving member is in the internal position; and an upward inclination portion (151,201) provided on the apparatus main body and inclined upwardly from a movement direction in which the moving member moves from the external position to the internal position, wherein the upward inclination portion is arranged to come into contact with the cartridge and to move the cartridge upward with respect to the moving member in a process in which the moving member moves from the external position to the internal position characterized in that the moving member includes a first force application portion arranged to apply, when the moving member moves toward the internal position, force to a force reception portion provided on the cartridge to move the cartridge into the apparatus main body, and the first force application portion is arranged to press the cartridge so that the cartridge having been in contact with the upward inclination portion moves upwardly with respect to the moving member, and while the moving member moves from the external position to the internal position, the cartridge moves upward in a state where the first force application portion is in contact with the force reception portion and the supported portion is in contact with the upward inclination portion, and the first force application portion and the force reception portion are, when the moving member is in the internal position, separated from each other. an apparatus main body; a cartridge including a supported portion (21, 23); a main body side positioning portion (152, 153, 200) provided on the apparatus main body and for positioning the cartridge in a position capable of image formation by supporting the supported portion; a moving member moveable with respect to the apparatus main body and arranged to thereby move the cartridge, the moving member being moveable between an external position, in which the moving member is positioned at least partially outside the apparatus main body and wherein the cartridge is attachable to and detachable from the image forming apparatus when the moving member is in the external position, and an internal position in which the moving member is positioned at least substantially inside the apparatus main body and wherein the cartridge is arranged to be positioned by the main body side positioning portion (152, 153, 200) when the moving member is in the internal position; and an upward inclination portion (151,201) provided on the apparatus main body and inclined upwardly from a movement direction in which the moving member moves from the external position to the internal position, wherein the upward inclination portion is arranged to come into contact with the cartridge and to move the cartridge upward with respect to the moving member in a process in which the moving member moves from the external position to the internal position characterized in that the moving member includes a first force application portion arranged to apply, when the moving member moves toward the internal position, force to a force reception portion provided on the cartridge to move the cartridge into the apparatus main body, and the first force application portion is arranged to press the cartridge so that the cartridge having been in contact with the upward inclination portion moves upwardly with respect to the moving member, and while the moving member moves from the external position to the internal position, the cartridge moves upward in a state where the first force application portion is in contact with the force reception portion and the supported portion is in contact with the upward inclination portion, and the first force application portion and the force reception portion are, when the moving member is in the internal position, separated from each other.