Image forming apparatus

An image forming apparatus to and from which a replenishment container accommodating developer is attachable and detachable and which is configured to form a developer image on a recording material, the image forming apparatus comprising:

• an image bearing member configured to rotate while bearing the developer image;
• a developer bearing member configured to bear the developer and supply the developer to the image bearing member;
• a developer container to and from which the replenishment container is attachable and detachable, the developer container comprising an accommodating portion configured to accommodate the developer to be borne on the developer bearing member, and a replenishment port for replenishing the accommodating portion with the developer from the replenishment container;
• a transfer portion configured to transfer the developer image on the image bearing member onto a recording material;
• a supporting tray comprising a supporting surface that supports the recording material thereon;
• and
• a discharge portion configured to discharge the recording material, onto which the developer image has been transferred, on the supporting surface,
• wherein the supporting tray has an opening portion opening such that the replenishment port is exposed through the supporting surface, and
• wherein an opening/closing member configured to be movable between a closed position where the opening/closing member covers the replenishment port and serves as a part of the supporting surface and an open position where the replenishment port is exposed is provided.