| 摘要 |
PROBLEM TO BE SOLVED: To provide a toner supply device that has a backflow prevention wall provided inside a toner storage chamber and can supply, to a toner conveyance path, a toner inside a space for storing a toner supplied from a toner supply source to the toner storage chamber.SOLUTION: There is provided a toner supply device including a first toner storage space 81, a second toner storage space 82, a toner conveyance pipe 43 including a toner conveyance screw 70 therein, an agitator 80 that rotates to agitate the toner inside the first toner storage space 81 and convey the toner to the second toner storage space 82, and a backflow prevention wall 83 that prevents backflow of the toner, where the agitator 80 has bent parts bent in the direction on the upstream side in the direction of rotation provided at least at one or more positions, and when the tip of the agitator 80 passes through the uppermost end of the backflow prevention wall 83, the position of the bent part closest to the tip of the agitator 80 is located above the uppermost end of the backflow prevention wall 83 in the vertical direction.SELECTED DRAWING: Figure 9 |
