PURPOSE: To facilitate automation of stages for producing cartridges and to improve productivity by directly coupling and fixing a shutter and a sliding member simply by engaging projections for engagement and socket parts for engagement with each other.
CONSTITUTION: The respective surfaces constituting the coupling surfaces of the connecting part 8a of the shutter and the sliding member 11a are provided with ≥1 pairs of the projections 22a for engagement and the socket parts 23a for engagement. The connecting part 8a of the shutter is pressed to the sliding member 11a and the projections 22a are engaged with the socket parts 23a, by which the shutter is coupled and fixed to the member 11a. Then, the shutter and the sliding member are directly coupled and fixed without using set screws and the stage for coupling the shutter and the sliding member is simplified.
ITO MASAHIRO
ISHIKAWA TOMOHIRO
