Systems and methods consistent with the present invention include a printer for printing graphical information on a surface. The printer includes a print head for printing indicia on the surface and an image sensor for recording an image of the surface. The recorded image contains a position-coding pattern...http://www.google.es/patents/US6854821?utm_source=gb-gplus-sharePatente US6854821 - Systems and methods for printing by using a position-coding pattern
Systems and methods for printing by using a position-coding pattern
