A cassette with cover is made up of a holding portion that contains sheets and a cover portion that serves as a cosmetic plate at the front of a laser printer and covers an opening of a storing portion for a process cartridge. The holding portion is supported at a bottom of a main body such as to move in a front-to-back direction, and the cover portion is separated from the main body along with the cassette portion. Thus, the opening of the storing portion for the process cartridge is opened or closed with the movement of the cover portion.