CASE

A case includes a case body detachably set on a feeder, a shutter slidable to open and close a discharge port, and a slider integrally provided with the shutter on an interior of the case body. The slider includes an operating hole including an elongated hole into which, in a state in which the case body is set on the feeder, a drive pin can be inserted, and extending along a reciprocal movement direction of the drive pin. The case body includes an exposing hole to expose the operating hole to outside. The drive pin is inserted into the operating hole via the exposing hole and is reciprocally movable to cause the slider to slide to open or close the discharge port via the shutter.