A toner transport device includes a toner transport path for passing
toner, and a toner transport pipe disposed so as to have an up-and-down
direction in which the toner transport path extends. Further, the toner
transport device includes a pipe supporting member for supporting the
toner transport pipe, which is supported so as to move up and down. This
allows the toner transport pipe to vibrate up and down, thereby properly
preventing retention and solidification of toner inside the toner
transport path.