Toner replenishing device and image forming apparatus including the same

摘要

PROBLEM TO BE SOLVED: To provide a toner replenishing device and an image forming apparatus capable of realizing preferable replenishment of toner to a developing device. A rotating body is provided in the accommodation space of a container body in the vicinity of a toner discharge port, and a stirring paddle is attached to the rotating body. The determination unit determines the toner reduction state in the storage space of the container body 37. The determination unit determines the toner reduction state based on the detection signal output from the container sensor 3S arranged so as to face the detection area 37L1 of the container body 37 in the detection target time zone. The detection target time period is a time period excluding a time period in which the stirring paddle 35B passes through the specific area 37K1 corresponding to the detection area 37L1 during one cycle in which the rotating body 35 makes one rotation. [Selection diagram] Fig. 20