US Patent 7226143 Printing apparatus

A printing apparatus includes at least two print head groups, each print head group having at least one print head for printing on a printing medium by ejecting ink, the print head being movable; and at least two image processing sections, each image processing section being provided for each of the print head groups, the image processing section being capable of processing an image to be printed on the printing medium using the print head that belongs to the print head group corresponding to that image processing section.