A two component developer storage product to replenish a two component developer containing at least toner and carrier includes: a cylindrical container having an opening at one end thereof; a lid to close the opening; a toner layer stored in the cylindrical container; and a carrier layer stored in the cylindrical container; wherein the toner layer and the carrier layer are stacked, and the cylindrical container has a spiral projection on an inner spherical surface thereof, and is configured such that when the cylindrical container is rotated, the toner layer and the carrier layer are conveyed by the spiral projection and toner and carrier are discharged from the opening.
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