A medium supplying apparatus is assembled to an image forming apparatus. A medium tray supports a medium thereon, and is pivotal about a first axis and extends from the first axis. The medium tray has a guide path that extends in the first radial direction. A feeder frame has a pickup roller rotatablly mounted to the feeder frame, and is pivotal about a second axis substantially parallel to the first axis. The medium tray and the feeder frame are drivingly coupled via a link. When the medium tray pivots to its open position or closed position, the link transmits the motion of the medium tray to the feeder frame in such a way that the feeder frame drivingly pivots to its open position or closed position.