A printer includes a printhead cartridge, in turn, having a printhead and ink supply for supplying ink to the printhead. The printhead includes a series of ink ejection integrated circuits (ICs) that are complementarily engaged together. Each IC includes spaced apart groups of nozzles configured to eject respective types of ink. The nozzles in each group are arranged to form staggered rows. A cradle unit complementarily engages with the printhead cartridge and has a media transport mechanism for transporting print media past the printhead. A media supply cartridge is configured to supply the media to the cradle unit.