Patent ID: 9244383
Filing Date: 2016-01-26
CPC Classification: G03G

Claim Text:
1. A toner supplying device comprising: a toner container that is tubular, includes a spiral groove, a toner discharge opening at one end in a longitudinal direction of the toner container, and a depression at the other end in the longitudinal direction, and is rotationally driven to convey toner contained in the toner container along the spiral groove in the longitudinal direction to discharge the toner from the toner discharge opening; a rotational driving unit that engages with the one end of the toner container to rotationally drive the toner container to cause the toner container to discharge the toner contained therein; and a projection provided at an interior portion at which the toner container is installed, and having an inclination in which a projection amount increases toward downstream in a rotational direction of the toner container, the toner supplying device supplying the toner discharged from the toner container to a developing device, wherein the projection goes into the depression of the toner container when the toner container rotates, and the projection has at least three faces, a first face including said inclination, a second face downstream in a rotational direction from the first face, the second face continuously contacting the toner container at an outer circumferential section of the toner container when the projection is not within the depression, and a third face downstream in a rotational direction from the second face.