Patent ID: 8583002

Claim:
A powder container comprising: a housing including a container chamber for containing powder; a rotation member disposed in the housing, the rotation member extending in an axial direction in which a rotation axis extends and rotating around the rotation axis; and a sealing member, wherein the housing includes a first wall portion having a first hole extending through the housing, an end portion of the rotation member in the axial direction being inserted into the first hole, the first wall portion defining an end of the container chamber in the axial direction, wherein the rotation member includes a second wall portion extending along a plane that intersects the rotation axis in the container chamber in a state in which the end portion of the rotation member is inserted into the first hole, the second wall portion facing a part of the first wall portion around the first hole with a distance therebetween, and wherein the sealing member has a second hole through which the rotation member extends, the sealing member is interposed between the part of the first wall portion around the first hole and the second wall portion, and the sealing member includes a foam member and a pair of sheet members sandwiching the foam member therebetween, the foam member being contractible due to pressure, the pair of sheet members respectively contacting the part of the first wall portion around the first hole and the second wall portion, the pair of sheet members having a friction coefficient lower than a friction coefficient of the foam member, the pair of sheet members not being bonded to the part of the first wall portion around the first hole and the second wall portion, and wherein outer dimensions of the sealing member and a dimension of the second hole are adjusted such that an upper edge of the second hole does not contact the rotation member in a state in which the sealing member is lowered to a position at which the rotation member contacts a bottom surface of the container chamber.