An image forming apparatus includes a storage section, an operating section, an assignment and management section, a press detecting section, and a display processing section. The storage section stores settings of a plurality of paper feed cassettes accommodating paper. The operating section has a plurality of operation keys to be pressed for inputting operation. The assignment and management section assigns the paper feed cassettes to the different operation keys to manage the respective paper feed cassettes. The press detecting section detects press of any of the operation keys. The display processing section displays, during the time when any of the operation keys is kept pressed, a setting check screen showing the settings of the paper feed cassette assigned to the operation key being pressed.