Developing device and image forming apparatus

A developing device for developing an electrostatic latent image with developer supplied from a container, the developing device comprising:

• a housing including a connection surface to which the container connects, the connection surface being provided with a feed port for feeding the developer;
• and
• a shutter mechanism configured to selectively open and close the feed port, wherein
• the shutter mechanism includes a shutter piece that moves between a closing position for closing the feed port and an opening position for opening the feed port, and a squeezing mechanism that protrudes from the shutter piece situated in the closing position to squeeze the developer into the housing through the feed port, the squeezing mechanism includes a protrusion configured to protrude from the shutter piece, and a limiting piece fixed on the housing and configured to limit separation of the shutter piece from the connection surface,
• the limiting piece includes a first piece configured to guide movement of the shutter piece from the opening position to the closing position, and a second piece connected to the first piece and being distant from the connection surface by a shorter distance than a distance between the first piece and the connection surface, and
• the shutter piece moving along the first piece and the second piece and when the shutter piece is situated in the closing position, the second piece presses the shutter piece against the connection surface to push the protrusion into the feed port.