Patent ID: 8768220

Claim:
A toner case comprising: a main body that contains toner; a discharge port located in the main body through which toner is discharged; an agitating unit rotatably positioned in the main body that agitates the toner; a transportation unit rotatably positioned in the main body for transporting toner toward the discharge port; a driving unit that drives the transportation unit and the agitating unit; a first transmission gear provided on a transmission shaft so as to allow the first transmission gear to rotate as the driving unit rotates; a first one-way clutch that causes the transmission shaft to rotate together with the first transmission gear when the first transmission gear rotates in one rotation direction of the first transmission gear, and causes the first transmission gear to idle with respect to the transmission shaft when the first transmission gear rotates in the other rotation direction of the first transmission gear; a first idle gear engaged with the first transmission gear; a second idle gear engaged with the first idle gear; a second transmission gear provided on the transmission shaft, the second transmission gear being engaged with the second idle gear; a second one-way clutch that causes the transmission shaft to rotate together with the second transmission gear when the second transmission gear rotates in one rotation direction of the second transmission gear, and causes the second transmission gear to idle with respect to the transmission shaft when the second transmission gear rotates in the other rotation direction of the second transmission gear; and a third transmission gear provided so as to be rotatable together with the transmission shaft, wherein the agitating unit rotates as the third transmission gear rotates, the driving unit is rotatable forward and backward, when the driving unit rotates in one rotation direction of the driving unit, the agitating unit and the transportation unit rotate, and when the driving unit rotates in the other rotation direction of the driving unit, the transportation unit does not rotate and the agitating unit rotates in the same direction as a direction in which the agitating unit rotates when the driving unit rotates in the one rotation direction of the driving unit.