Powder container with a contact portion to cancel a restriction member from restricting rotation of an engagement portion

A powder container configured to be attached to and detached from one of a body of an image forming apparatus and a removable component to be installed in and removed from the body of the image forming apparatus, the powder container comprising:

• a collection port configured to communicate with an outlet port of the one of the body and the removable component, and to receive and collect powder flowing out through the outlet port;
• a container shutter configured to open and close the collection port;
• a rotation portion configured to be engageable with an engagement portion of the one of the body and the removable component, the engagement portion configured to open and close a cartridge shutter of the one of the body and the removable component to open and close the outlet port through which the powder flows out;
• an operator configured to rotate the rotation portion in conjunction with an operation of the operator;
• and
• a contact portion included in the rotation portion and configured to contact a restrictor of the one of the body and the removable component in conjunction with attachment of the powder container to the one of the body and the removable component, to cancel the restrictor from restricting rotation of the engagement portion.