A printing apparatus can reduce degradation in print quality of a printed image, notably in a highlight portion or an intermediate gradation portion, in the case where the image is printed by forming dots of a plurality of sizes. Specifically, data causing larger and smaller cyan ink droplets, respectively,...http://www.google.de/patents/US6877833?utm_source=gb-gplus-sharePatent US6877833 - Printing data producing method for printing apparatus
