A printer is shown that can selectively reduce its print resolution by sharing print for one nozzle in the nozzle array between several nozzles. Each nozzle has an ejection aperture and a corresponding actuator for ejecting printing fluid through the ejection aperture. A print engine controller sends print data to the array of nozzles in accordance with a designated print job. During use, the print engine controller can selectively reduce the print resolution by apportioning print data for a single nozzle between at least two nozzles of the array. This recognizes that some print jobs do not require the best resolution—a lower resolution is completely adequate for the purposes of the document being printed. This serves to extend the operational life of all the nozzles.