A print head positioner includes a tilt mechanism that selectively engages and moves a carriage supporting the print head when the print head and supporting carriage are in a home position. The print head positioner is uncoupled from the carriage X-axis drive mechanism during imaging to avoid extraneous...http://www.google.fr/patents/US6042217?utm_source=gb-gplus-shareBrevet US6042217 - Print head positioner mechanism