A printing apparatus receives, from a host apparatus, main scanning/printing direction information representing the main scanning/printing direction of a printhead. The printing apparatus stores, in a print buffer, print data corresponding to the printing direction represented by the main scanning/printing...http://www.google.com/patents/US7080892?utm_source=gb-gplus-sharePatent US7080892 - Printing apparatus, information processing apparatus, control method for them, and program
