Patent ID: 8200127

Claim:
A developer storing container comprising: an inner case having an inner opening; and an outer case including: a first hollow portion including a surrounding wall shaped so as to surround a center axis, in a cross-section said surrounding wall has both ends perpendicular to said center axis, said surrounding wall having an ejection opening through which a developer is ejected, a second hollow portion including plate-shaped first and second outer walls respectively extending from said both ends of said surrounding wall and a third outer wall disposed between said first and second outer walls, and grip portions disposed on said first and second outer walls, said grip portions protruding in an outward direction from said first and second outer walls, wherein said surrounding wall extends from one of said both ends to the other of said both ends at an angle greater than or equal to 180 degrees with respect to said center axis, and an entire outer surface of said surrounding wall constitutes a part of an outer surface of said outer case, said inner case being rotatably disposed in said first hollow portion and contacting an inner surface of said surrounding wall, said inner opening facing said ejection opening when said inner case is in a predetermined rotational position, said inner case including a shutter member that rotates so as to open and close said ejection opening, and a sealing member for sealing said ejection opening and disposed on the shutter member so as to rotate with the shutter member, further wherein in response to a sufficient pressure being applied to said grip portions, said grip portions, said first outer wall and said second outer wall each deform inwardly towards an interior of said developer storing container so as to cause said shutter member to move towards said ejection opening and thereby cause said sealing member to be pressed against said outer case.