Patent ID: 8335455

Claim:
A toner supplying device detachably mountable into an apparatus body of an image forming apparatus while being guided by a guiding portion formed in the apparatus body, comprising: a container body formed with a toner replenishment opening and adapted to contain toner; a shutter for opening and closing the toner replenishment opening; and an opening/closing structure for causing the shutter to perform opening and closing operations as the container body is mounted into and detached from the apparatus body; wherein: the opening/closing structure includes an arm projecting from the shutter in a mounting direction of the container body into the apparatus body and a locking portion provided at an end of the arm; the locking portion includes a first locking claw projecting in a first lateral direction with respect to an axis of the arm along the mounting direction, the first locking claw being engageable with and disengageable from a first engageable portion for locking formed at the guiding portion and a second locking claw projecting in a second lateral direction opposite the first lateral direction with respect to the axis of the arm along the mounting direction, the second locking claw being engageable with and disengageable from a second engageable portion for locking formed at the container body.