Patent ID: 8467114

Claim:
A printing device for printing an image comprising a plurality of pixels, the system comprising: a carriage arranged to make a plurality of passes along a scanning axis with respect to a print medium, the passes including one or more forward passes and one or more backward passes; a plurality of printheads mounted on the carriage, each printhead corresponding to a different ink colour and comprising at least one ejection nozzle; and, a print controller configured to receive data defining for each pass zero or more locations at which to deposit each of the ink colours to produce each pixel; wherein at least one first ink colour of the ink colours is deposited just during the forward passes or just during the backward passes, and at least one second ink colour of the ink colours is deposited during both the forward passes and the backward passes; wherein the print head is to deposit the ink colours to print the image in accordance with a print mode corresponding to a color gamut of the image, the print mode indicating a first specification of an order in which the ink colours are deposited, the print mode indicating a second specification of the at least one first ink colour to be deposited just during the forward or just during the backward passes, and the print mode indicating a third specification of the at least one second ink colour to be deposited during both the forward and the backward passes; wherein the first specification, the second specification, and the third specification together ensure that the image as printed in accordance with the print mode achieves the color gamut.