Abstract: A inkjet printer having: a body configured to receive a printhead assembly of at least one printhead integrated circuit having a plurality of ink ejection nozzles and an ink distribution support mounting the, or each, printhead integrated circuit, and arranged, in use, to distribute ink to the nozzles; and at least one mounting feature on the body for mounting the printhead assembly at the ink distribution support. The, or each, mounting feature is configured to cooperate with a corresponding complementary reference feature of the ink distribution support upon mounting of the printhead assembly to the printer, where the cooperation providers information on the location of the nozzles.

Abstract: A method of refilling a supply of printing fluid in a printing unit, comprising the steps of: removably mounting a dispenser of printing fluid to the printing unit so as to align an outlet of the dispenser with an inlet of a printing fluid storage chamber of the printing unit; determining an amount of printing fluid needed to substantially refill the printing fluid storage chamber; and selectively dispensing an amount of printing fluid from the dispenser corresponding to the determined amount.

Abstract: A printhead assembly having: at least one printhead integrated circuit having a plurality of ink ejection nozzles; and an ink distribution support mounting the, or each, printhead integrated circuit, the ink distribution support being arranged, in use, to distribute ink to the nozzles, the printhead assembly being arranged to be mounted to a printer at the ink distribution support, wherein the ink distribution support is provided with at least one reference feature, the, or each, reference feature serving to provide information on the location of the nozzles upon mounting of the printhead assembly to the printer.