Patent ID: RE44172

Claim:
An accommodating vessel, which is detachably attached to a vessel receiving part of a casing of an image forming device to accommodate an image forming material, the accommodating vessel comprising: a vessel main body that includes a tubular part with one opening opened in one end and in which the image forming material is accommodated; a cover member that includes a fitted part to which the tubular part of the vessel main body is detachably fitted, and that is pushed in to the tubular part so as to freely rotate to an attaching position; at least one positioned protrusion that is provided to protrude in the fitted part of the cover member, and that is used to position the cover member to a positioning place of the tubular part of the vessel main body; and at least one positioned positioning protrusion that is provided to protrude in the tubular part of the vessel main body, and that abuts on the at least one positioned protrusion to position the at least one positioned protrusion to a positioning place, wherein the at least one positioned protrusion includes: a guide protrusion that extends in a rotating direction of the cover member; and a plurality of rotation stop protrusions that extends in opposite directions to each other relative to the guide protrusion along a pushing and pulling direction of the cover member, and wherein the positioning protrusion includes a stop wall that abuts on the guide protrusion and the plurality of rotation stop protrusions of the at least one positioned protrusion to be stopped.