| 摘要 |
PROBLEM TO BE SOLVED: To loosen an aggregate of toner in a toner bottle 33 without causing the toner bottle 33 to perform large eccentric motion.SOLUTION: A projection 304g that projects from an outer peripheral surface of a toner bottle 33 in the projection amount that reduces a diameter of the revolution orbit of the toner bottle, the orbit around the rotation axis, as the center, of the toner bottle smaller than an inner diameter of the toner bottle 33, is provided to a pumping-unit 304 at a leading-edge part of the toner bottle 33; and a lock-opening 336 for accepting, from the outside to the inside of a container leading-edge cover 34, a container lock member 609 that is disposed to contact with the projection 304g of the toner bottle 33 that has rotated to a predetermined rotation angle, and avoids contact with the projection 304g by displacing the position of the lock-opening in a direction separated from the projection 304g along a bottle rotation radius direction in association with the contact with the projection 304g, is provided to the container leading-edge cover 34. |
