An intermediate hopper has a toner reception tub, a partition for dividing an internal space of the toner reception tub; a first and a second toner conveyance path; a first toner conveyance screw being provided in the first toner conveyance path; a second toner conveyance screw being provided in the second toner conveyance path; a toner receiving port for receiving the toner; a toner communicating path for guiding the toner in the first toner conveyance path to the second toner conveyance path; a toner discharge port; and a toner amount detection sensor, wherein the first toner conveyance screw further comprises an agitation plate disposed at a position facing the toner receiving port so as to extend radially from the first rotation axis and fixed in parallel with the first rotation axis, and the toner amount detection sensor is provided on an upstream side relative to the agitation plate.