Toner supplying device and image forming apparatus

An image forming apparatus, comprising:

• an apparatus body;
• an image bearing member provided in the apparatus body for bearing an electrostatic latent image;
• a developing device provided in the apparatus body for developing the electrostatic latent image formed on the image bearing member into a toner image;
• a toner supplying device detachably mountable into the apparatus body for supplying toner to the developing device;
• and
• a guiding portion formed in the apparatus body for guiding a mounting movement of the toner supplying device into the apparatus body,
• wherein:
• the toner supplying device includes:
• 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 attached to the arm;
• and
• the locking portion includes a first locking claw engageable with and disengageable from a first engageable portion for locking formed at the guiding portion of the apparatus body and a second locking claw engageable with and disengageable from a second engageable portion for locking formed at the container body.