An image forming apparatus including a toner bottle, accommodation unit, door unit, drive unit and developing unit. The toner bottle stores toner. The accommodation unit accommodates the toner bottle such that the toner bottle lies in the accommodation unit. The door unit covers the toner bottle. The drive unit rotates the toner bottle to supply the toner stored in the toner bottle and renders the toner bottle not to be rotated during a time the door is opened. The developing unit is set in a printable state during a time the toner bottle is detached from the accommodation unit after the door unit is opened. A corresponding method is also described.