A toner container detachably attached to a toner-container holder of a
main body of an image forming apparatus includes a container body that
includes an opening, and discharges toner contained in the container
body, from the opening; and a held portion that is held by the
toner-container holder in a non-rotating manner. The held portion
includes an open/close member for opening/closing the toner outlet in
synchronization with an attachment/detachment operation of the held
portion to/from the toner-container holder.