To provide a cartridge collection supporting method for promoting the collection of a cartridge by providing a cartridge collection guide to a user timely.

Whether a cartridge is substituted is judged on the basis of cartridge identification information stored in a storage element included in the cartridge (step S110), and when the substitution of the cartridge is judged, an information input picture for collecting the cartridge which is acquired from a prescribed server through a network is outputted to a prescribed picture display means (step S120). Since a collection guide is timely provided to a user at the time of substituting cartridges, cartridge collection is promoted.