Patent ID: 8326187

Claim:
A toner cartridge comprising: a toner reservoir for storing toner; and, a toner conveyor portion including a toner discharge port for discharging the toner from the toner reservoir to the outside and a toner conveying member for conveying the toner to the toner discharge port, characterized in that the toner conveyor portion includes, in the vicinity of the toner discharge port; an enclosing member that encloses an upper part of the toner conveying member located over the toner discharge port; a communication opening connecting between the toner conveyor portion and the toner reservoir; and, a pressure relieving portion for opening and closing the communication opening in accordance with a pressure of the toner enclosed by the enclosing member, the pressure relieving portion allowing toner in the toner conveying portions to pass through the communication opening and into the toner reservoir.