The toner cartridge of the present invention has a container for storing
toner which is mounted and rotated on a cartridge holder, a toner feed
port formed on the mount on the cartridge holder of the container, a
shutter for opening and closing the toner feed port by rotating round the
toner feed port, and a rotation mechanism for rotating the shutter by a
linear operation for mounting and demounting the container from the
cartridge holder, and furthermore, such a toner cartridge mounted feeds
toner to the developing apparatus.
