Abstract: A color printer which is small in size and capable of forming high-quality images though it is an electrophotographic type, including a cylindrical toner cartridge 8 for storing toners, photosensitive members 18, 20 and 22 disposed at a position such as to be in contact with the outer peripheral surface of the toner cartridge 8, a laser beam source 28 for applying a laser beam to the photosensitive members 18, 20 and 22, and a transfer roller 36 for transferring a toner image formed on an electrostatic latent image of the photosensitive members 18, 20 and 22 to a recording medium. The toner cartridge 8 has toner chambers 6 for storing toners 10, 12 and 14 of a plurality of colors, and is provided with a rotation driver 26 for rotating the toner cartridge to a position corresponding to the color of toner adhered to the photosensitive members 18, 20 and 22.