Patent ID: 8401436

Claim:
A developer container which contains developer and is to be inserted into and detached from a container receiving portion of an image forming apparatus body, comprising: a container body that contains developer; an opening that is formed through the container body; an opening/closing lid that closes the opening; a lid holding frame that holds the opening/closing lid in such a manner that the opening/closing lid can move in an opening/closing manipulation direction between an open position where the opening/closing lid exposes the opening and a closed position where the opening/closing lid closes the opening; a stopper that stops the opening/closing lid to prevent the opening/closing lid from moving toward the open position in a state that the opening/closing lid is located at the closed position; a contact portion that comes into contact with a hook portion provided in the container receiving portion when the developer container is inserted into the container receiving portion; and a deformable portion that deforms the stopper to such an extent that the stopping of the opening/closing lid by the stopper is canceled when the developer container is inserted into the container receiving portion and the contact portion comes into contact with the hook portion.