Patent ID: 7073889

Claim:
A method of printing pixel images on a sheet or web of paper using an ink-jet printer having a print head which reciprocates across the sheet or web of paper along a first path in a first direction and along a second path in a second, opposite direction, wherein the pixel image consist of a plurality of pixels located adjacent to each other, as viewed in said first and second directions, including first and second pixels placed at the leading or upstream edges of the image in question as considered in the first and second directions, wherein the print head is controlled to discharge an ink droplet for forming the first and second pixels only when moving in the first and second directions, respectively and is repeated over the image, said ink-jet printer containing means for storing an input image corresponding to the pixel image according to a first or input image resolution and being adopted for printing said pixel image according to a second or printing resolution, said second or printing resolution being twice the first or input image resolution, in particular 600 dpi.