Patent ID: 7558515

Claim:
A powder container that can be detachably installed in a container housing unit of an image forming apparatus, the powder container comprising: a container body including an opening located at a head of the container body; a fitting part extending from an end of the powder container and configured to fit around a counterpart on the container housing unit such that, when a user rotates the container body on the container housing, the counterpart on the container housing abuts the fitting part to block the rotation of the container body; and an engaging part located at a bottom of the container body, the engaging part configured to be engaged with an engagement receiving part of the container housing unit; a drive transferring member that rotates integrally with the container body; and a lid including a discharge outlet that further discharges powder discharged from the opening of the container body; and a shutter that opens and closes the discharge outlet, wherein a position of the powder container in the container housing unit is determined by engaging the engaging part with the engagement receiving part, and operating the lid such that the shutter opens the discharge outlet.