US Patent 10209667 Developer supply container and developer supplying system

A developer supply container includes a developer accommodating body configured to contain developer, with the developer accommodating body being rotatable about a rotational axis. A developer discharging body is provided in fluid communication with the developer accommodating body, with the developer discharging body having a discharge opening provided in a bottom portion of the developer discharging body and configured to discharge the developer from the developer discharging body, and with the developer accommodating body being rotatable relative to the developer discharging body. A track is provided on each of opposite sides of the developer discharging body.