Patent ID: 7540674

Claim:
A method of printing utilising a printing apparatus having a base, a printing station where a print head is mounted, the print head including a plurality of printing elements which are selectively energisable to generate an image on a substrate upon there being relative movement between the substrate and the print head, the print head being moveable relative to the base, and the apparatus including a sensor device to sense the speed of the substrate as the substrate moves relative to the base adjacent to the printing station, and a controller to receive input signals from the sensor device and to control print head movement relative to the base to achieve a desired relative speed between the print head and the substrate, and wherein the method includes predicting when the speed of the substrate relative to the base, as the substrate advances, will be less than a predetermined speed, and in response, moving the print head at the printing station to a downstream extreme position of print head travel, and during printing of an image, moving the print head from the downstream extreme position towards an upstream extreme position of print head travel.