US Patent 7113719 Image forming apparatus

An image forming apparatus operable to perform functions. The functions include a function involving a printing operation. The apparatus includes an activator for activating a function. A determiner determines whether the activated function is the function involving the printing operation. The apparatus includes an image forming unit for forming an image on a print medium. A fuser can fuse the image on the print medium with heat. A controller controls the fuser to start heating if the activated function involves the printing operation.