According to one embodiment, a cartridge is provided with a case and a transportation member. The case includes a first chamber, a second chamber, and a passage. The first chamber communicates with a discharging port and accommodates a developing agent. The second chamber is positioned distant from the discharging port compared to the first chamber and accommodates a toner. The passage allows the discharging port to communicate with the second chamber. The transportation member transports the toner, which is supplied to the passage from the second chamber, toward the discharging port.