To provide a gas cartridge for a ribbon discharger capable of facilitating filling.

In this ribbon discharger for discharging paper pieces of five colors and a ribbon roll 19 by using pressure of accumulated gas, gas cartridges 17, 17' can be set, and filled gas can be exchanged, a discharging pin having a side plate and a shaft of a gas discharge valve 2 for the rear gas cartridge 17', a spring 4 in which the projecting part of the rear gas cartridge 17' is inserted and an internal stopper 5 are inserted in order as cited in the front of a gas cylinder 1, a front stopper 8 in which a screw type discharging pin 7 for the front gas cartridge 17 is fitted and fixed to the front end of the gas cylinder 1, and the rear gas cartridge having a projecting part disposed in the rear and the front gas cartridge having a projecting part disposed in the front are mounted a space of the gas cylinder between the inner stopper 6 and the front stopper 7.