| 摘要 |
PROBLEM TO BE SOLVED: To provide a developing device for an image forming device which stirs toner without giving mechanical damage and stably accurately detects the quantity of remaining toner independently of stirring. SOLUTION: A developing device 10 is provided with a toner vessel 11 where toner is stored, a stirring device 1 which stirs the toner in the toner vessel 11, and a toner sensor (a light emitting part 15a and a light receiving part 15b) which detects the quantity of toner remaining in the toner vessel 11. The stirring device 1 is comprised of a cylindrical rotating body 2 rotatably supported in the toner vessel 11 and plural fins 3 which are provided on the outer peripheral part of this rotating body 2 and scoop the toner. The light emitting part 15a and the light receiving part 15b of the toner sensor face each other with a hollow part 2a of the rotating body 2 between them and are positioned in the direction from the upper side to the lower side of the hollow part 2a (the inside diameter of the rotating body) as the toner powder surface level variance direction. |
