A printing cartridge for an inkjet printer includes a housing which is engageable with the printer. An ink supply arrangement is positioned in the housing and is connectable to an ink feed arrangement of the printer to feed ink to the printer when the housing is engaged with the printer. A print media supply arrangement is positioned in the housing and incorporates a roll of print media. The housing defines an exit slot from which the print media can be fed. A print media feed arrangement is positioned in the housing and is operable to feed print media from the exit slot. An array of detectable formations is positioned on the housing to be sensed by a sensing arrangement positioned in the inkjet printer. The array represents a two-dimensional code relating to at least one of the ink and the print media.