Accommodating vessel and image forming device using the same

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 first member that includes a first tubular part with one opening opened in a part thereof;
• a second member that includes a second tubular part with one opening opened in a part thereof, wherein:
• the first tubular part and the second tubular part form a space for accommodating the image forming material,
• the second tubular part relatively rotates with respect to the first tubular part in a predetermined rotating direction so that the second member moves to an attaching position, and
• the second tubular part relatively rotates with respect to the first tubular part in a direction opposite to the predetermined rotating direction so that the second member moves to a detaching position;
• and
• a positioning mechanism that positions the first tubular part of the first member and the second tubular part of the second member,
• wherein the positioning mechanism includes a plurality of first protruding parts, a plurality of second protruding parts, a first rotation stop protrusion and a second rotation stop protrusion,
• wherein:
• the plurality of first protruding parts are provided on the first tubular part of the first member,
• each first protruding part includes a first guide part that protrudes from the first tubular part and extends in the predetermined rotating direction, and
• the first guide part guides the second tubular part of the second member relatively rotating with respect to the first tubular part of the first member,
• wherein:
• the plurality of second protruding parts are provided on the second tubular part of the second member,
• each second protruding part includes a second guide part that protrudes from the second tubular part and extends in the predetermined rotating direction,
• the second guide part contacts with one of the first protruding parts to guide the first tubular part of the first member relatively rotating with respect to the second tubular part of the second member, and
• the second guide part restricts a movement of the first member from the second member in a direction intersecting with the predetermined rotating direction in a state that the second member is positioned in the attaching position, and
• wherein:
• the first rotation stop protrusion extends from at least one of the first protruding parts in a direction intersecting with the predetermined rotating direction, and stops the second member from rotating in the predetermined rotating direction,
• the second rotation stop protrusion extends from at least one of the first protruding parts in another direction intersecting with the predetermined rotating direction, and stops the member from rotating in the direction opposite to the predetermined rotating direction when the first member is detached from the second member, and
• the first rotation stop protrusion and the second rotation stop protrusion extend in opposing directions.