PURPOSE: An image forming apparatus is provided to form some contact parts inclined our rounded shape in order to easily attaching and supporting a cartridge. CONSTITUTION: A body housing(60) comprises an opening and a cover member which covers the opening. A body frame(70) is combined in the inside of the body housing. An image formation cartridge is mounted and dismounted from the main body through the opening. A support assembly(80) supports the image forming cartridge.
