An image forming apparatus includes: a toner container, a reader and writer, a blocking control section, and a press mechanism. To the toner container, an RFID tag is attached. The reader and writer opposes the RFID tag. The press mechanism has a press member and a rotor reciprocally moving in an attachment and detachment direction of the toner container. The blocking control section permits power supply to the reader and writer when the press member has been pressed in conjunction with insertion of the toner container and the rotor in conjunction therewith has moved to a first tip position, and blocks the power supply to the reader and writer when the rotor has separated from the first tip position and has moved to a locking position.