A pagewidth drop on demand printer includes a printhead having an array of fixed printing nozzles thereon. A platen having a platen surface upon which a sheet rides to receive ink from the printing nozzles is situated alongside the nozzles. A sensor is provided to measure an offset of the print surface...http://www.google.fr/patents/US6786658?utm_source=gb-gplus-shareBrevet US6786658 - Printer for accommodating varying page thicknesses
Printer for accommodating varying page thicknesses